CA2193741A1 - An autonomous remote measurement unit for a personal communications service system - Google Patents

Abstract

An autonomous remote measurement unit for a personal communications service system is disclosed. A plurality of base stations (32), or other fixed sites, and a Test Mobile Unit (68) are each equipped with a Remote Measurement Unit (RMU) (400). The RMU (400) is comprised of a microcontroller (404), spectrum analyzer (408) and modem (416) (if located at the base station). Under the automatic direction and control of the microcontroller (404) and a centralized controller, channel utilization controller (CUC) (50), the spectrum analyzer (408) is directed to take signal power measurements across a frequency band of interest. The RMU (400) processes, packages and stores the measurements into data files for transfer to the CUC (50). The CUC (50) uses these measurements as part of channel use verification (CUV) and measured data analysis (MDA) mechanisms.

Description

~WO 96134501 PCT/US96/05778 AN AUTONOMOUS Rl;MOTE MF~URF.MF.NT UNIT FOR A PER!~ONAL
COMMUNICATIONS SFRVICF. SYSTEM

W0 96/3~5al . ~ 111 '' / rn t ~ ., ~1 9~74 1 RELATFn I~PpL~ oN
This is a ~:u~ ualivll-in-part of application Serial No. 07/874,370, filed April 27, 1992, entitled "EREQUENCY AGILE SHARrNG TECHNOLOGY (FAST) FOR A
PERSONAL COMMUNICATIONS SERVICE SYSTEM.r BACKGROUND OF T~r. I~VENTION
Personal ~ ls Services ("PCS") are the focus of an tx~ iol~a amount of interest, both in the United States and around the world. The global tf~ll~..,..l.-.ll,l;.~tlil-.tc network today forms the infrastructure for our infr~rrn~tirn-based society. The need for illDtanL~~u~l~ ll.. ~l.. ;.. lil.. ~ capability is critically important in today's ;~u~ economy, as the unprecedented growth of cellular 15 f' l~ ..l;rzlnr~rlc d~:~llullallall,~,. PCS w;ll permit millions of people worldwide to initiate person-to-person .. ,.. ln;.,.lir,n5 using small and ha:~y~lDiv~ low-power telephone handsets. People no longer will be tethered to stations at which telephone calls may be placed and received, but will be able to l'l~....lllllli. ,.i.~ freely whether at home, at work, or in the publ;c ~llViU~
PCS will enhance the nation's product;vity and the quality of our lives. It willbe a truly personal service. Although PCS will provide ~Uulye~ ll to cellular, paging, and other services, ;t will be unl;ke celluiar -- at least 95 percent of the airtime of which is pa;d for by bUbill~ o--in that PCS will make portable ~ullullul~Raliollb available to great numbers of people who have been unable to ~al li.iyaie in today's mobile 25 ~ lf.lll"l",l,l;iil,l,D revolution. It will enable Eastern Europe and Third World countries to leapfrog over their crippled infrastructure h~nrlir~rq It will contribute form;dably to American exports and economic well-being. In the long term PCS mayeventually provide competition to the telephone companies' local exchange monopolies.
PCS systems are comprised of multiple base stations that may be linked in a variety of ways to comprise an integrated ~ system. Base stations ~ WO 96134501 PCTlUS~6/0!i778 3 ~ 937~ ~
receive comm1mi~itinnR from PCS handsets and route those ...,.",.I.,.i.,,li.~l~c to the intended source, using either the PCS system independently or using the PCS system to route the ~mmun;rAtinnc to the public switched telephone network ("PSTN"). Base stations also transmit ~nmmlmi~Atir)nc lo PCS hanclsets from other sources on the PCS
~ 5 system or from the PSTN. PCS systems may illcvllJulaLc: independent telephone switching and control centers or PCS operators may cooperate with local exchangecarriers to utilize existing switching facilities operated by those carriers. S-ll,s..il,~l access to the PCS system is established by a radio rnmmlmi~ A~inn link between the PCS
handset and the base station.
The geographic area served by P('S operators is divided into a number of zones or cells, each of which is served by at least one base station. Dividing the geographic area into relatively small cells permits extremely efficient use of the spectrum because frequencies can be reused in g~u~;laphi~.1lly separated cells. Frequency reuse also permits large numbers of subscribers to be served by the system because null.~luu~
frequencies may be available in a given cell. PCS systems also may illCvl~vlal~ the capability of Lldl~r~llillg a ~UbS~ l unit with a call in progress from cell to cell as the subs.l;~ moves w;thin the service area.
The impl~m~ntAti~-n of PCS technology differs from traditional cellular t~ commnlli~Ation~ in that cellular systems have been designed with cells of comparatively large radii, requiring relatively high-power sllbs~ Jel units. This design follows logically from the basic initial purpose of cellular telephone -- to permit mobile telephone use in automobiles. Although hand-held portable cellular units have been developed, the ~ulu~dlaLiv~ly high power required by cellular systems limits the ability of such handsets to use small and light ~power sour~es. PCS systems, in contrast, use a great number of much smaller radius cells, permitting PCS handsets to operate atmuch lower power because the handset-to-base station signal need only travel a relatively short distance. PCS handsets can thus be small, light and inexpensive. PCS
~ handsets also can have applications in private local-area networks within buildings and for data transmission.
The essential distinguishing technical characteristic of PCS is that the frequencies identified for PCS by the IJ.S. Federal CommlmirAtions Commission and spectrum-wos6~34~nl r~
4 ~q374l allocation bodies throughout the world are currently occupied by other users. In the United States and several other countries, PCS will be required to share this spectrum with existing UBerB. The FCC allocated the 1.8~1.99 GHz band to PCS. This band is occupied by private up~lc~liun,ll fixed microwave users, which use the band for point-5 to-point microwave l,,.".~ n~ The challenge to PCS operators will be configuring systems around existing users without causing interÇerence to those users. As a .. ,...l.~, ;~i,n, cellular licensees have clear spectrum and thus are concerned only with mtl~b~ (as opposed to i~ y~ L) il"t:lL .~l.ce. U.S. Patent Numbers 4,144,412, 4,736,453, 4,481,670 and 4,485,486 are examples of such concepts, which will not accoumt 10 for hlt~ f~l~n.~ concerns between PCS licensees and point-to-point l~ lVV~dVt:~ users.
Point-to-point microwave systems can employ different power levels, antenna gain, modulations, channel bandwidths, and other technical . ~ ;s~ and microwave usage varies si~l.iti.~ll,tly from area to area. In some areas, up to 100 MHz of spectrum with the 1.85-1.99 GHz band may be available for ;..~pl~ u~ of PCS, while in other areas as little as 25 MHz of spectrum may be available. To meet this challenge, the PCS industry will need a system and method for engineering PCS
frequency use around existing microwave users that can be readily adapted to any area and most efficiently make use of the available communications spectrum in that area.
Such a system must fully protect ex;sting microwave users from i~ f~ and should take advantage of PCS technology advances in e~ui~ el,t and ensure that these advances are not inhibited nor hampered. The invention described in this Application is designed to serve this need.

SUMM~RY OF THE INVENTION
The present invention, a Frequency Agile Sharing Technology (FAST) system controls frequency usage within a PCS system to allow PCS systems to coexist in the same frequency band as Private Operational Fixed Microwave Ser-~ice (POFS) systems without mutual interference. The present invention also controls frequency usagewithin a PCS system to eliminate interference within the PCS system. The invention combines theoretical radio frequency ~RF) interference analyses with measurements of ~ ' 2 ~ ~ 3 7 ~ ~

actual frequency usage. This illL~lrt l~l,.e eli~ laLion system allows for efficient and coordinated dynamic frequency allocation planninK and management.
The present invention controls frequency ~ n to each PCS base station.
The present invention also controls which frequency at a particular base station is ~ 5 utilized when the system is accessed (i.e., a call is placed or received).
The " ,~. h~ s employed by the present invention to control frequency assignments to PCS base stations are an illl~l~,yaL~lll illL~:Irt~ llce analysis, an illllaay~L~Ill inL~lr~ analysis, a charmel use v~rifi~Atinn (CW) procedure and ameasured data analysis/measured data int~gr~ri-~n (MDA/MDI) plucedul~. These 10 mechanisms are p.~ru.llled by a centralized controller, termed the Channel Utilization Controller (CUC). The CUC is c ull-~l;sed of inL~lr~lcllce analysis/frequency planning computer programs with ~u~J~ulLillg databases and data ~v..,..,..,.i...l;u,. links to the PCS base stations via the PCS Telephone Switching Office (PTSO).
The mechanism employed by the present invention to control frequency 15 a~aibl.ll.~llLs to each subscriber unit access of the P(~S system is a Channel Selection Process (CSP) ~lfv~ ed by the PCS base station during the call set-up procedure.The first mechanism is an illL~la~Lt:lll i.lL~If..~ analysis performed by the CUC. The CUC performs a theoretical analysis of PCS channels that can be used without interference at each base station. This analysis is based upon the CUC'stechnical databases, propagation predictions and illl~lr~l~llce f~ ti~ns The technical databases contain inforrn:ltion on all PCS base stations and all POFS stations including the following; transmit and receive frequencies, latitude, longit~ , ground elevation, antenna, antenna height, ~ n.~ . power, trllncrniccion line losses and antenna gain. The CUC evaluates interference to POFS stations from PCS base stations and from PCS aul s~lib~l units. The CUC also evallates interference to PCS base stations and to PCS subscriber units from POFS stations. In order to evaluate interference to and from PCS :iUb:~l;b~:l units within the service area of a PCS base station, the CUC utilizes a series of grid points around the PCS base station.
Il.L~Ir~ to and from PCS subscriber units is evaluated at each grid point location.
The second ~ue.h~ni:,-ll is an intrasystem interference analysis performed by the CUC. The CUC performs an analysis similar to the iuLt:l~y~L~ interference anal,vsis W0~6/34SOI r_"u.,.
7 11 l except that interference to PCS suL/~ unit signals received at PCS base stationsfrom other PCS ~LIbb~.lkel units is evaluated at PCS base stations. A~itic)n:~lly~
interference to PCS base station signals received at PCS ~Ub~ units from other PCS
base stations is evaluated at each grid point.
The result of the ~lL~l~,yblt:ll. and intrasystem interference analyses is the creation of an Available Channel l.ist (ACI.) for each PCS base station. Any channel that would cause or receive excessive ilLk:lDy~L~ or iUll.lDybL~ -t~,f~ltl.ce isremoved from the ACL by the CUC.
The third mPrh~nism employed is a Channel Use Verification (CUV) procedure performed by the PCS base stations. The base stations measure signal strengths in all POFS microwave channels and all PCS channels and upload the measured data to theCUC. This system is unique in that it is an dulollullluu~ measured signal gathering system. Each base station, or other fixed site, is equipped with a Remote Measurement Unit (RMU). The RMU is a microwave receiver and power measurement device under microcontroller control. The RMU ~ ~mmllni~t~c to the CUC. via modem through the Public Switched T/~ ,.".,..~,ir~finnc Network (PSTN) or through other means, such as a wireless RF rflmmlmi~ ticmc path.
Upon direct command from the CUC or as scheduled by the CUC, the RMU
takes sensitive and accurate l.leà~u~ .ents in narrow frequency bands. Once the 20 illed,ul~ are taken, the RMU llli~lo~ulll-uller processes the measured data and formats and stores the measured data into data files. Position inform~tic)n on the location of the base station RMU is not necessary since such information is already available in the CUC base station database. Either on a scheduled basis or upon command from the CUC, the measured data files are uploaded from the R~IU to the 25 CUC.
This measured CUV data is used by the CUC to verify the accuracy of the ,y~lll and illtla7y~ l illtelf~ analyses at the PCS base stations and ensure that the ACI. includes only interference-free channels.
The present invention also employs a Test Mobile Unit (TMU) whici- measures 30 signal strengths in all POFS microwave channels and all PCS channels. The TMIJ is used to accumulate CUV measured data in the service area of a PCS base station. The w0 96134s01 r~"~ "~
7 l / 3 7 4 1 TMIJ is ~ iDed of a GPS receiver or other positioning device, a Remote MeaDult:ll.cllt Unit (RMU) and an ornnidirectional antenna. The mobile RMU differs from the fixed site (or base station) RMU in that the microcontroller is a personal computer in the TMU. The mobile RMU is preferably directed to make ~leàDu~c~llcllLs 5 while the TMU is in motion in order to average Ollt ~ll. ..n,~ and multipath effects, The TMU associates a coordinate location with each CW llleaD~ lclll, preferably by utilizing the global positianing satellite (GPS) receiver or other locational analysis device, The measured data is uploaded to the CUC via a PCS base station, or stored electronically for later input to the CUC. The CUC utilizes the cuoldillalc 10 information associated with a TM'U CIJV l-lcaDulcll-cl.~ to compare TMU measured values to theoretical values calculated at the nearest base station grid point. This TMU
CW data is used by the CUC to verify the accuracy of the illl~lDyDl~lll and illllaDyblc interference analyses at base station grid point locations, The fourth ,...~.l.~,.i.~.,., employed is a measured data analysis and measured data i~ .l (MDA/MDI) performed by the CUC. After receiving the CUV measured data, the CUC compares actual measured signal strengths to the theoretical predicted signal strengths (~rtPrmin~cl in the illk:lD,yDlt:lll and intrasystem analysis) to either verify or modify the ACL, Utilizing actual measured values to verify predicted values ensures that each channel in the ACL will neither cause nor receive interference, The PCS base station CUV data obtained from the RMU allows the CUC to verify interference predictions between PCS base stations and POFS stations. The TMU CUV
data allows the CUC to verify il~cl~clcl.l.e predictions between PCS DUbD~ /Cl units and POFS stations, Both the PCS base station CUV data obtained from the RMU and the TMU CUV data allow the CUC to verify intrasystem illlclr~lc.lce predictions,The result of these four m~nh~ni~mR is an A~L for each PCS base station that only includes il-Lclrclc.-.c-free channels, The CUC downloads the ACL to the PCS base station or alternati~ely downloads the ACL to an Operations M~inf~n:)n~ Center (OMC~ and stores the data for future retrieval, If an OMC is employed, it controls the frequency use of the PCS base stations, In such an embodiment, the OMC is preferably a UNlX-based machine that connects directly to the CUC, These four mechanisms are performed when a new PCS base station is brought on-line, or modified, upon the wo 96f34~

request of the system operator or at specified intervals (i.e., every night or as often as necessary to maintain illL~lL.~cli.e-free PCS and POFS cnmmnnirAtinns)~ but not p~lro~ ed upon each system access by a DubD~ r unit.
The fifth ,.,~ ". employed is a Channel Selection Process (CSP) p~lfu.,lle-l 5 by the PCS base station during the call set-up ylu~edul~. This m~rhAni~m is employed upon every system access by a Dul/D l;b~l unit. As a result of the above four mrrhAnicmc, the ACL is developed and sent to each corresponding base station.
Frequencies for ~stàl)liDllillg ~ u.-~l"..~~i- ~ s between a SU~D~1;b~1 unit and a base station for a specific call are selected from the ACL. A further security against 10 intrrfPr.onre is provided by the CSP performed during the call set-up procedure. When a DubD.l;l,~l unit accesses the PCS system, both the DU ~s libt:l unit and the base station measure the signal strength on each respective receive channel in the ACL. The DubD~:libel unit transmits its measured data to the PCS base station which selects the best available channe] pair for the voice/data link, i.e., the frequencies that will provide 15 the highest carrier tû interference ~C/I) ratio.
Access to system traffic data allows the system operator to utilize the CUC to identify base stations requiring a-i~itionAI channels to handle busy hour traffic and base stations under-utilizing their channel capacity. Integrating the ~ lÇ~ e and system traffic analyses, the system operator can utilize the CUC to re-configure ~system 20 frequency use to optimize system capacity. The system operator can obtain frequency deployment, system usage, coverage and intPrferrnrr reports from the CUC
periodically, upon modification or upon request.
Accordingly, a primary objecti e of this invention is providing personal rnmml~ni~-AtinnS service t(.~ subs~ lD utilizing small, low power and lightweigllt 25 handsets in the same frequency band as private fixed uy~lalivllal fixed microwave systems.
It is an object of the in:vention tû provide in~stantaneous, interference-free communications capability anywhere within the PCS service area, indoors or outdoors.
It is an object of the invention to use frequency agility and low power signals so 30 as to elirninate harmful i-,t~,f~.~l..e to or from other communications systems.

wo 96/34~0l PCr~ss6ms77s 9 2 1 q374 1 It is an object of the invention to simullaneo.lsly transmit personal ~omnmlni~tionc service signals in the same frequency band as existmg microwave signals without apprec;able il.l~.f~ to any signal.
It is an object of the invention to make frequency ~!~C.;~l lt.q subject to non-interference between signals within the system, i.e., i~ y~
It is an object of the invention to make frequency a~subject to non-int~rf~r~nre between PCS signals and P~FS signals, i.e., i~ y~
It is an object of the invention to increase l u~capacity in a PCS
system by more efficient use of the ava;.lable spectrum.
It is an object of the invention to provide an autonomous fixed site remote measured data gathering system.
It is an object of the invention to provide an autonomous mobile site remote measured data gathering system.
It is an object of the invention to base design of a personal ~ommlmi~lti~ns network on capacity requirements and actual propag~tion~l environment rather than on an inflexible commnni~Atir~nc plan.
These and other advantages, features and objectives of the invention and the manner of attaining them will become apparent and the invention will be best understood by reference to the following d~a~ li )ll of the embodiments of the invention in conjunction with the ~ .,.l.yillg drawings and appended claims.

DES~'RTT'TION OF TT-TF. DRAWINGS
Figure 1 is a rliAgrAmm~ti~ - of a personal l'llllll~lllllil~llilln~ service (PCS) system displaying various elements of the system.
Figure 2 is a block diagram of the ~:UIll~UllW IlD of the channel utilization controller (CUC).
Figure 3 is a diagram showing the base station Remote M~a:,ult:"l~ Unit (R~IU)-Figure 4 is a block diagram of the components of the Remote Measurement Unit (RMU) and the connection with the modules of the Channel Utilization Controller (CUC).

~V096t34.S01 .~ C,~
t~ 0 ~ t 9~74 1 Figure 5 is a plot of a sample power spectrum based on 25 kHz power Illt:O.:~Ul~lll~l!t~ made by the RMU as processed by the CUC MDA module.
Figure 6 is plot of a sample power spectrum based on 200 kHz summed Illrasurl~ lL~ made by the RMU as processed by the CUC MDA module.
Figure 7 is a plot of a sample power spectrum based on 5 and 10 mHz summed power m~ r."~ made by the RMU as processed by the CUC MDA module.
Figure 8 is a diagram showing the division of the 1850-1990 M HZ band for frequency allocation to the PCS service.
Figure 9 is a I~L~llk!lion of the main menu of the CUC.
Figure 10 is a map showing the grid points at the "Jeff Davis" site.
Figure 11 is a flow chart used by the CUC for p~lfullllillg the theoretical intersystem in~l t~ analysis.
Figure 1Z is a flow chart used by the CUC for p~:lfUll~ lg the th~r~t;ral ~IL~ y~l~lll interference analysis.
Figure 13 is a map showing the PCS base station sites and the theoretical hexagonal grid.
Figure 14 is a diagram showing channel group a~ to base station locations.

DESC RlPllON OF THF. ~ hl<l~tL~ F.MRODT~T
Figure 1 illustrates one ~lllbu~ of a Personal (~nmmtlni~Afi~n~ Service (PCS) system utili~ing a Frequency Agile Sharing Technology (FAST) system 30 forproviding high capacity, low cost portable telephone service in a shared frequency band with Private Operational Fixed Microwave Service (POFS) stations. Bellcore Framework Technical Advisory FA-NWT-001013, Issue 2, December 1990, "Generic Framework Criteria for Universal Digital Personal Commllni~Atilmc Systems (PCS)~, provides an alternate functional des~ Liu-, of a PCS system. The FAST system 30 is compatible with the Bellcore description of PCS systems. The FAST system 30 includes a plurality of base stations 32, a n ultitude of subscriber units 36 and one or more PCS
Telephone Switching Offices (PTSO) 38 illL~u~u~e~l~d with the Public Switched Telephone Network (PSTN) 4û or other switching centers such as a cellular Mobile W0 9C134501 P.~
1 1 2 ~ 9 3 7 4 1 Telephone Switching Offices (MTSO). I~ u~ ecliu~ is preferably accomplished witha Type II interconnect to a class four central office. The Channel Utilization Controller (CUC) 50 controls the ~ of frequencies to each base station 32.
Base stations 32 include radio frequency (RF) signal L.clllb.~h,~l~ for establishing radio ~mml1nir~*nns links with ~ l,~. . ;l,~. units 36. Base stations 32 include a Remote M~asu~ .,l Unit (RMU) 400. me RMU 400 is ~:ull~pliD~:d of a tunable receiver, power l.led:,u~ ent device 408, modem ~116, and a ~ lu~ulllloller 404.Under control and direction by the CUC 50, the RMU 400 takes power llled~ul~
across a given bandwidth, prûcesses and formats such i,.f~ )n, and forwards the data to the CUC 50. The RMU 400is connected by switch 424 to the directional antennas 432 at the base station 32.
Base stations 32 are i~lL~ul~ne~ d to the PTSO 38 either directly or through cu.lc.llllalulD 53 which reduce the cost of b~ckh~llling traffic by multiplexing the voice/data traffic of multiple base stations 32 onto a single communications link 55. In some PCS embodiments, the Base Station Controllers (BCCs) act as concentrators, as well as provide mobility management functions. Due to power .u~ of small lightweight hand held portable phones 57, the PCS system preferably uses smallerradius base station 32 coverage areas than other ~ullUllU~ tiUlls systems such as cellular telephone systems. The base station 32 coverage areas can be enhanced by the use of distributed antenna systems, particularly to improve PCS service in indoor environments .
The use of broadband linear amplification systems allow base stations 32 to be tuned remotely to operate on any channel in the authorized band without the need for h~rhni~ionc to physically modify the base station 32. This method of amplification differs from tr~riitionol channel combining networks which utilize individual channel amplifiers combined through a multicoupler.
Subscriber units 36 e ommnni~te to base stations 32 by a wireless RF
~ommimin~tions path. Subscriber units 36 can be portable telephones 57, portablephones with adapter units in automobiles 61 to allow the portable unit to utili~e ~ 30 antennas 63 mounted on the exterior of the automobile 61, portable computers 64 or other communications devices. Examples of such devices include commercially ~ ) t ~' 12 21 ~374~
available lightweight telephone handsets such as the Motorola Silverlink 2000 Personal Telephone or the Motorola Microtac Lite, ~u...l,.e..ially available adapters such as the Motorola S1757 Digital Hands Free Adapter or the Motorola S1945 Digital Personal ~ mmlmir~tor Telephone Extended System, or ~u~ cially available data 5 terminals such as the IBM 9075 PC radio or the Apple PuweLbook equipped with a radio interface card.
The Test Mobile Unit (TMU) 68 has an r~mnil1ir~rtirrnAl antenna 70 attached to atunable receiver 408 controlled by a mi~lul~u-e:~Dur 436 with data storage capacity for p~.fu~ lg the Channel Use Verification (CW) ~ a3.~ procedure. Since the 10 location of the TMU 68 iS required with the illt~.rel~.lcè calculations, the TMU 68 preferably includes a Global Positioning Satellite (GPS) receiver 440 and antenna 460 to fix location coordinates.
Figure 2 is a block diagram of an important feature of the FAST system, the Channel Utilication Controller (CUC) 50. The CUC 50 controls the frequency 15 n~ to the PCS base stations 32 using a central processing unit 74, input/output devices 77 and dedicated ~ullllllulli~aLions links 55, 80,82 to the PCS base stations 32 via the PTSO 38. One ~ o~ of the CUC 50 is a microcomputer 86 which would house electronic storage media, read-only memory (ROM), random access memory (RAM), llO interfaces 88 and a ,.:o---l.le.~-ally available microprocessor such as the Intel 20 80386. The electronic storage media, RAM, ROM and l/O devices 77 may be any ~ullllllt ~ lly available devices that are suitable for operation with tl-e type of microprocessor selected. The CUC 50 operating system, intrr~n~nrr analysis programs, measured data analysis programs, I/O interface programs, data communication programs and :~U~UtlUl~ , databases 90 are stored on a hard disk drive or other 25 electronic storage media. Depending on the application, external memory devices, such as cc mpact disk (CD) or Bernoulli box, may be required to store supportingdatabases 90. The preferred embodiment includes a disk or tape back-up of the CUC 50 software to allow system recovery in case of failure.
The PCS system architecture described below is based upon one possible PCS
30 standard. The FAST system 30 is not ~errn~nt upon this architecture. Rather, this architecture is presented to allow a more thorough description of the operation of the W 096/34501 P~~
~ '; 13 2 1 ~7~ ~
FAST system 30. The PCS dl~lLL~Lul~: discussed below is based upon the Groupe Special Mobile, now also called Global System for Mobiles ~GSM) European digitalcellular standards. The GSM standard, upbanded to the 1710-1880 MHz band has been selected for Personal Crmmnni~Atinnc Network (PCN) systems m the U.K. and is under consideration in Germany. This upbanded GSM standard is referred to as theDCS-1800 standard and is a Time Division Multiple Access (TDMA) Frequency Division Duplexed (FDD) architecture. This standard uses a 200 kHz RF charmel with eight voice slots per carrier. C~ne time slot from one carrier in each sector is used as a control (signalling and access) channel. U.S. Standards bodies are now adopting a revised version of the GSM for the 1850 ~o 1990 band (referred to as PCS-1900 or DCS-1900).
Another possible PCS dl~hil~l:lul~ is based upon the Code Division Multiple Access (CDMA) system under dw~lulu~l~el~l by Qualcomm, Inc. for U.S. digital cellular systems. The Qualcomm CDMA standard is also under consideration by U.S.
Standards bodies. The FAST system 30 can be configured to operate with either of these two or any other relatively nallvwb~ d PCS system architecture, narrowband relative to POFS RF channel bandwidths (i.e. 5 MHz or less). The FAST system 30 can also be configured for FDD PCS architectures utilizing a variable transmit - receive separation or for Time Division Duplexed (TDD) PCS al~hi~ ul~:s in which transmit and receive functions are performed on distinct time slots on the same frequency.
Figure 3 shows the FAST base station RMU 400 ~ulLfi~,ulaliulL. As shown in Figure 3, the RMU 400 preferably connects to the CUC 50 via a modem 416 through the Public Switched Telecommunications Network (PSTN).
The RMU 400 in conjunction with the CUC 50 provides an autonomous remote measured data gathering capability for performing the Channel Use Verification (CW) and the Measured Data Analysis/Mea:,L~ Data Tnt~gratinn (MDA/MDI). Figure 4 is a functional diagram of the FAST system sho~vmg the i"L~r~ analysis software modules in the CUC 50, the PSTN interface to the Remote ML asu-~u.~:l,l Units (RMUs) 400 and the ~VIII~JUll~ S of the RMU 400.
The RMU 400 is a microwave receiver and pouer measurement device ~l~f~lal)ly housed in a rugged chassis for unattended outdoor use or preferably ~VO9~ 4'iCI ~ Pcrluss6/nsnx 14 ~ ~ ~ 3 7 ~ 1 ~
integrated directly into the PCS base station 32. The RMU 400 may be operated from a fixed s;te or from a moving vehicle. In a preferred ell.bo~ , the RMU 400 is located at the base station 32 and in the Test Mobile Unit (TMU) 6S.
In general, the RMU 400 provides serLsitive and accurate mea~ul~ t~ iA
5 narrow frequency bands upon comrnand from the CUC 50, preferably on a sched.uled basis. The RMU 400 then takes measurements across the band of interest. Once medsL,.~ ,b are taken by the RMU 400 across the frequency band of interest, the RMIJ 400 processes, formats and stores the .,.r.. ~."~.. t~ Upon a command from the CUC 50, the measured data files are uploaded from the RMU 400 to the CUC 50.
10 Alternatively, the RMU 400 can upload the files on a scheduled basis.
In order to actually measure the potential interference between the PCS base station 32 and a POFS site, the CUC 50 establisnes a cnmmnni( ~tif~n link to an RMU
400, preferably deployed in the PCS base station 32, through the PathScan module 452.
The Pathscan module 452 controLg the RMU 400. More specifically, the CUC 50 15 connects to a modem 428 through the Pathscan module 452, as shown in Figure 4.
Communications between the RMU 400 and CUC 50 preferably occur over the Public Switched TPlPc-lmmlmications Network (PST~). All~ lively, other communications tr;~nemigci~-nc systems can be used including an X.25 packet switclled network, cable, wireless networks, etc. In order to achieve reliable data tr~ncnnigRion, 20 the Pathscan module 452 preferably uses header and footer protocols on packets sent between the CUC 50 and RMU 400. Preferably included in the data packets are bitsallocated for a CRC check.
The Pathscan module instructs the RMU 400 to perform the following tasks, among other tasks: (1) measure the signal power and store the measured data; (2}25 instruct the RMU 400 to work under a predefined schedule (including such information as time to commence mt:~i,u.~..,~.,L~); and (3) upload measured data upon request.
To send ~ ~mmr,~n~ requesEing the RMU 400 to take signal measurements, the CUC 50 dials up the RMU 400 an.d sends the predefined schedule and band table in30 communications packets comprising the "Measure Data" command. A sample set ofcommands between the CUC 50 and RMU 400 is shown in Appendix A. The Measure WO 96/34.'501 ~ PCTIUS96/05778 2, 9374 ~

Data command provides the microcontroller 404 with the predefined schedule whichdictates when the receiver 408 must scan the bands listed in the band table. The band table contains a list of frequency bands for which the RMU 400 must take power 7U~ 'llt::l. A single entry in the Band Table consists of the following fields: Input 5 Identifier; Start Frequency; Stop Frequency; Intervals between Samples; Number of Complete Scans; Channel Bandwidth; the Number of Samples (to average over to ~letorTninl~ the power); i~l~ntifir~tion of one of the three antenna sectors as input to the receiver.
The microcontroller 404 accepts and interprets the Measure Data Command.
10 While p ~, r." ."i"g the Measure Data command, the microcontroller 404 packages and stores the measurement results in data files which are stored in nonvolatile memory for later forwarding to the CUC 50.
On receipt of the Upload Data command, the microcontroller 404 provides the results of all Measure Data commands issued since the last Upload Data command was 15 issued. The microcontroller 404 maintains pointeri in memory to difk:l~l.tiale measured data which has been uploaded from measured data which has not been uploaded.
On receipt of the Get Hardware Configuraticn command from the CUC 50, the lo~ Ll~)ller 404 shall report the RMIU unit ID, the version number of the 20 microcontroller software, and the number of RF inputs to the RMU 400.
All commlmi~Ation~ between the microcontroller 404 and the CUC 50 shall use the protocol shown below in Table ï. The data may be r~lmmAnrlc from the CUC 50, or responses from the RMU 400.
TABLE 1. CUC-RMU COMMUNlCA~TlONS PROTOCOL
BYTI~ # De~ ,; Value Start Flag :.111 1111(binary) . to N-3 data variable) 2 - N-1 CRC16 data dependent) - 30 N End Flag 110 lllO ~binary) As shown in ~igure 3, the RMU 400 preferably consists of a modem 416, microcontroller 404, fully-il~ d mi,-rowave receiver and a spectrum analyzer 408.

WO 961~45~1 PCI~/US9610577~
16 ~ 3 7 4 I
The RMU 400 is preferably a 19" rack-mountable chassis, 10" deep and 3" high, whic.h is inh~gr~ltr~t1 into the PCS base station 32 or test mobile unit 68. In the base station ( 'I ll I ~i';l ! I ~ I ;~ ~1:, shown in Figures 3 and 4, the RMU 400 is powered by the base station's intemal DC power source.
The RMU 400 has three RF inputs and a fourth input for calibrating no;se. Each RF input ~:ull~juullds to one of the three directional antennas 432 directed to each sector of the three sector base station 32. The microcontroller 404 directs a switch 424 to select between the three RF inputs and a calibrating noise source 456. The analyzer 408 measures power spectral density on one of the three inputs in accordance with directions of the band table. The RF receiver and spectrum analyzer 408 preferably pro~Tide RF signals strength IlledbUlt~ b down to -125 dBm with a +/- 1 dB accuracy in a ~5 kHz ~ asLll..l...ll bandwidth. Accuracy iB achieved in the spectrum analyzer 40S through the use of narrow resolution filters. The base station RMU analyzer 408 preferably has a tuning range of fiom 1850 to 2000 MHz. The analyzer 408 preferably 15 tunes in Ill~ lllenlb of ~5 KHz with a tuning accuracy of 1 ppm (i.e., +/- 1000 Hz at 2 GHz.). Table n, below, shows the preferred . l .l; ., I~, ;~l ;. !~ of the spectrum analyzer.
TABLE Il. ANAI YZER CHARACTF~RISTICS
REQIJIRE~MENT SPEC
20Number of . nput Ports ~nput impec mce O ohms nput VSW . .':1 lpUt ('nnrlt~r~nr~ MA
ort to Port Isolation ~ dB
uning .ange 40-2000 MHz capability r'uning ~ccuracy .ppm ~ lKHz at 2GHz) ystem Noise Figure ' ~
ensitivity - ~; dBm = OdB S/N in 25 kHz BW
Ad~acent Chlnnel Rejection - dBc 25 kHz from carr r ~x Power Re,ection - dBm incident, 1930-1 70 MHz ylll l~iG~r SB Phase Noise - . 4 dBc/Hz at 25 IChz o"set (goal) npu: Power Range - ' 5 ~o -30 dBm lpU IP3 -~ ~ d m w/o AGC, O dBm with AGC
. un ng Step Size 2; kH z :un ng Speed 2 mil isec to settle to within l dB
amplitude ~ F~
~ ~ ' 17 ~ 7 4 1 Op ra ing Temperature 0 - +65D~gC
OpPra-ing Humidity 9~~~O ~~fm.lf~ncing Cal- br ltion Intemal OdB noise source The present invention is capable of working with any one of several spectrum analyzers 408 known in the art. One example of a ~:u~ JdLilJle analyzer is the E~'P
Spectrum Analyzer No. 8594. Other analyzers could be used that operate using more sophisticated processing te hni-luf~c, including digital signal processmg. The spectrum analyzer 408 simply measures the power spectrum and does not flf~tf~rminf~ whether 10 the interference is microwave il.l~:.fc.t:t:, other interference or a received PCS signal.
Signal and illLC:l~Cl~ di:~l;lllilldliUll is p~' r~ preferably at the CUC 50, asdescribed below.
When making the meaDult-~ .lD, the analyzer 408 preferably takes power llledsurt:lllents in ill~lC~ LD of 25 kElz.
The receiver, spectrum analyzer 408, RF switch 424 and modem 416 are under the ~ ontrol of the RM.U's microcontroller 404. One of the advantages of the present invention is that the microcontroller 4J4 works autonomously with the spectrum analyzer 408. No human monitoring of the system is necessary since all control is exercised by either the microcontroller 404 or the CUC 50. In fact, the ~ lucu~luller 20 404 also works dulul-o-uuDIy with the CUC 50. The microcontroller 404 receives f f mm~nf1q from the CUC 50, interprets the romm:mflq, Cf mm ~nflq the spectrum analyzer 408 to tune to and take power l~ sul~lllrlllD over a certain frequency band, gathers the measured power value.s, formats the data into files and send these files back to the CUC 50 for ~IU~:DDillg.
The ~ u~unLluller 404 is pl~f~-db;y an off-the-shelf 386 based microprocessor with aDDu~idL~d memory. However, several other processors could be utilized in the present invention. The ll~ u~onLlullef 404 preferably includes both non-volatilememory (e.g., PROM. EPROM, and/or EEPROM) and volatile memory (e.g., SRAM).
Once the microcontroller 404 receives its instructions from the CUC 50, the microcontroller 404 formulates a set of f~f~mm~n~lq to control measurement by the spectrum analyzer 408. Once the dpl~ul,riat~ start time occurs as indicated by the CUC
50, the microcontroller 404 instructs the spectrum analyzer 408 to set up to a certain w096~34s01 r~
c j",~ 18 ~iq374~ ~
tuning frequency and directs the switch 424 to enable one of the three RF inpuL sources.
The microcontroller 404 instructs the spectrum analyzer 408 in accordance with the total bandwidth to be scanned, the frequency scan ill~ lllCIII~ and time interval between mea~ulcl~ and directs the analyzer 408 to .. ~ the scan. The lld~lu~vllllvller 404 then r~lmm~nrl~ the analyzer 408 to report back the measured signal values.
Prior to selecting one of the RP inputs, the l~ lv~vl~ilvller 404 may direct theanalyzer 408 to first perform a noise self-calibration test. In this case, the microcontroller 404 directs the switch 424 to enable the noise source 456. The self-calibration test involves providing an internally generated signal, with a well knou~n amplitude, to the front end of the receiver and evaluating the resultant power measurement. With the measurement of the calibrated noise source, the spectrum can later be n/~rm~li7rri by dividing the power by the spectral noise density. Therefvre, any distortions occurring during the RF ll~caDulclllclll~ due to imperfect filtering for example, can be accounted for since the input noise is quantified.
After completing the scan of the frequency range as specified by the microcontroller 404 using one of the RF inputs, the microcontroller 404 requests that the analyzer 408 pass the measured values back to the .l~i.-o.vl.lluller 404. The microcontroller 404 packages the lllcaSUlcll~cl~t~ mto data records. The packaging may include frequency ~l~al~neli~ g the information. The data records are stored in memory until the CUC 50 requests an upload of these records. The microcontroller 404 has the ability to store multiple scans in associated nonvolatile memory. In fact, up to several days worth of scans may be stored by the ll~i~lo~unllvller 404 m associated nonvolatile memory.
The microcontroller 404 connects through a modem 416 to rr,mmurlir~tr with the CUC 50. The modem 416 preferably operates at a data rate of 9.6 baud. The modem 416 preferably has a built-in MNP 2-4 and V.42 bis data U.)III~JlC~ iVII protocol and a built-in V.42 forward error correction protocol When uploaded to the CUC 50, the measured data files are stored for processing by the Measured Data Analysis (MDA) module 444, shown in Figure 4. The measured data files consist primarily of power measurements corresponding to 25 KHz channel WO ~6/34501 r~
19 2 ~ 9 3 7 4 1 bins. A sample file corresponding to 25 KHz bins with acqo~i~t~l power m~asu~ L:.
is shown in Appendix B.
me MDA module 444 massages the raw dat~ to establish a noise floor, to identify signals above the noise floor and to provide the total power and bandwidth of each identified signal. Preferably, the noise floor is .1~1,.. i.~d based on the slope of the cumulative probability density function. me power spectrum based on the 25 KHz llltasult~ shown in the file in Appendix B is provided in Figure 5. me r~lc~ tl~d noise floor is shown as the horizontal line 456 extending across the frequency spectrum.
After determining the noise floor, the MDA 444 sums up the powers into 200 KHz bins and generates a file comprising the list of bins and the ~:ullt:byulldillg power in each bin. Appendix C shows a sample 200 kHz bim file.
A plot of the sample 200 k~Iz power channel power lllea~ul~lll~lll~ above the noise floor is shown in Figure 6. As described below, the 200 kHz power 15 ~ a~ul~lllents are used by the Measured Data In~gr;ltil~n (MDI) 448 to rll~t~rrnin interference from the microwave users to the PCS system.
Next, the MDA 444 sums up the 25 kHz cha}mel powers into the known 5/10 MHz licensed microwave frequencies in the particular PCS market area. Appendix Dshows a sample 5 and 10 MHz bin file. A plot of these power lll~a~ul~lllents is shown 20 in Figure 7.
me measured data is used by the MDI 448 to verify the theoretical interference predictions (described below) to use in ~ ."...,;..g available PCS channels. The 200 kHz and the 5/10 MHz bin files are transferred from the MDA 444 to the MDI module 448. The MDI module 448 operates to ~ . . ;,.,;"~l~ between the microwave users and 25 the l'CS users, the purpose of which is described in later paragraphs below. me Measured Data Integration (MDl) module 448 attempts to match the 5tlO MHz actualpower values with the known licensed OFS microwave sites in the area. For example, assume that the center frequency of a known OFS site in the area is 1915.00 MHz.Referring to Figure 7, the MDI 448 is able to match the measured power of -43 dBm 30 with the known OFS site. This measured value can then be compared to the theoretical value resulting from the theoretical FAST analysis described below to WO 96134501 PCTI~S96/~5778 20 ~ f ~ 3 7 4 ~ --rlr-tPrminf~ if the actual med:,u~ .~-t is below or above threshold. If any of the measured values are either below or above theoretical values, the FAST r~r:llr~ t~c the theoretical path losses based on the actual microwa~e signal values.
The description of the RMU 400 above has been provided with reference to a 5 base station or other fixed site. A. similar RMU configuration i6 also placed in the test mobile unit (TMU) 600. In this c:vl~fi~,uration, the micrornntro~ r functions, described above, are preferably p~lru~L~ed by a 386 based personal computer. The 'TMU personal computer 436 is attached to the spectrum analyzer 408 in the mobile unit 68 ~l~f~.dbly by an RS232 interface, but could be any of a variety of other communications means.
10 The mobile ~:u~ fi~;ulation differs from the fixed site ~ullfi~;ulatiull in that the PathScan module 452 is incorporated into the personal computer 436 in the TMU 68. Therefore, some of the CUC tunctions have been l~dl Df~llt d into the TMU 68. In addition, the TMU 68 preferably has an omnidirectional antenna 70 instead of the three directional antennas 432 of the fixed site configuration. The omnidirectional antenna 70 acts to 15 simulate the omnidirectional antenna ~cco~i~tr~1 with each Dul~D.Iil~l unit 36.
Another difference between the RMU 412 onboard the TMU 68 and the RMU
400 at a fixed site is that the mobile unit RM[J 412 is connected to a Global Positioning System (GPS) 440 or other posiLiul.il.g device. The positioning device 440 communicates directly to the computer 436 through another communications port.
20 Information from a GPS receiver 440 is sent directly to the TMU computer 436. In one embodiment, the GPS communications link is a standard RS-232 serial line, but could be any of a variety of r~mmnnir~tic~nc means.
A GPS program executing in the TMU computer 436 processes position information received from the GPS receiver 440. The GPS program checks whether 25 incoming GPS data has been received through the communications port. When position data is detected by the GPS program, the position data is saved to a data file along with a time stamp.
The Tl~IU computer 436 controls the spectrum analyzer 408 in the same manner as the operation of the microcontrolier 404 in ronjnnrtion with the analyzer 408 at the 30 fixed site, described above. The Pathscan module 452 contains instructions for performing the following tasks: ~1) measuring the signal power; (2) date and time of WO 96/34501 r~ /r 21 ~ l 9 3 7 4 1 start of scans; (3) date and time of stop; ~4) number of complete scans; (5) channel bandwidth; and (6) the number of samples to average over to rlPt.orminl~ the power.
These worhing schedules are preferably stored in a database in the TMU computer 436.
Preferably, power .--easu~ .LlD are taken while the mobile unit 68 is moving.
5 While m~dDu~ D could be taken while the vehicle is not in motion, it is preferred to take the m~Ac-lr~m~nl~c while the TMU 68 is in motion so that multiple meabul~..L~l.LD can be taken at different locations. These llleaDult:lll~lb can then be used to average out the Al~ and multipath effects. The number of med~ul~ s taken are based on the velocity of the vehicle. The preferred mode of 10 operation is obtaining fifty (50) ~lledbu~ -llD over a distance of forty (40) lambda (where lambda is wavelength). Since the frequency is preferably fixed at 2 GHz, lambda equals .15 meters. The 50 measurements are pl~:Lt~dl,lly used to . l ,~, .-- 1., ;,,~ only one power ~ dbUl~ lll corresponding to one channel. Therefore, in this embodiment there are 50 llledDul~lllents associated for each channel in the scan. In this 15 embodiment 50 measurements are taken every .15 meters. Based on this factor and the velocity of the vehicle, the time intervals between medDult~ llD can be ~
The TMU 436 computer polls the GPS ~oDili."-i--g device 440 to obtain the velocity of the vehicle.
The RMU analyzer 408 continues taking these ~-~easu~ lll until the scheduled 20 scan is completed. The TMU computer 436 then averages the ~u~l~D~undi~g 50 .lleasul~..,ents for each center frequency. These values are time and position stamped (based on the GPS receiver input) and then saved tc. a data file.
The MDA 444 and MDI 448 post plO~i DDillg on the TMU data files is ~[elably p~lLull~ed when the TMU 68 returns to the CUC 50 location. All~..-atively, the TMU
25 68 could transmit these data files back to the CUC 50 while still in the field by sending the data via wireless RF rr~mmllni-Ati~-rls In addition to these embodiments, the host computer 436 could also have the MDA and MDI modules 444, 448 implemented in it.To illustrate the preferred embodiment of the present invention, a scenario ~ m~nSfrAting the operation of the FAST system 30 can be described as follows: This ~ 30 scenario involves a hypothetical PCS system in operation in the Washington -Baltimore area. The hypothetical PCS system shares the 1850-1990 MHz band with =

WO 96134~01 1 ~ ~ ,J / I~
~ , j f~ 22 2 1 9 ;~ 7 4 1 lly~ elicill POFS stations. A specific ~l~I.iLe.lult: is presented for the PCS system and parameters identical to actual point-to-point ..,i.~uv~ve paths in the vicinity are used for the POFS facilities. This scenario ~ hllnl~h how the CUC 50 is used by the system operator to evaluate the addition of a PCS base station 32 and how frequency 5 usage is controlled by the FAST system 30 to prevent illt~ and intrasystem interference.
In this scenario, the Federal ('~lmmllni~AtionS ~-nmm~ n (FCC) licenses two common carrier PCS system operators (Licensee A and Licensee B) in each market. The FCC has not determined the ~5eo~ l-ic areas in which PCS licensees will be authorized 10 to provide service. In this example, the A~ lu~ .l area for Licensee A is theWashington-Baltimore Major Trading Area identified in the Rand McNally 1992 Commercial Atlas & MArk~fin~ Guide. The 1850-1990 MHz band ]04 is allocated to the PCS service as follows: the 1850-1875 MHz band 106 reserved for Licensee A subscriber unit 36 to base station 32 ~r~nhmicci-~nS~ the 1875-1900 MHz band 108 reserved for 15 Licensee B sllhcfrihPr unit 36 to base station 32 tr~ h~ lh~ the 1930-1955 MHz band 111 reserved for Licensee A base station 32 to :~ul,~ unit 36 transmissions and the 1955-1980 MHz band 114 reserved for Licensee B base station 32 to subscriber unit 36 ll.lllhlllihh;,)llc A diagram of this division of the 1850-1990 MHz band is illustrated in Figure 3. The division of the allocated frequency bands into distinct channels is 2û provided in the table of Appendix E. For ~ulllpalisull, the division of the allocated frequency bands into distinct channels for the CDMA PCS system is provided in the table of Appendix F.
This frequency allocation scheme provides for an 80 MHz separation between transmit and receive (Tx-Rx3 frequencies which matches the Tx-Rx frequency 25 separation for POFS stations under Section 94.65 of the FCC Rules.
Appendix G is a table of POFS microwave channels. This provides advantages in spectrum sharing with POFS paths. American Personal Communications (APC), which holds an experimental license (Call Sign - KC2XDM, File No. - 2056-EX-ML-91) from the FCC to test PCS services and technologies, has demonstrated that sufficient 30 spectrum exists in the 1850-1990 MHz band 104 to launch the PCS service without migrating existing POFS licensees out of the band. This is described in American WO 96134501 PCT/LlSg6/05778 - 23 ~1~374t Personal ~'ommllnin;lti~n~ "Frequency Agile Sharing Technology ("FAST") Report on Spectrum Sharing in the 1850-1990 MHz Band Between Personal Commlmi(~Ati-)ng Services and Private Operational Fixed Microwave Service, Volume 1", July 1991. ln the very few areas where an existing licensee needs to be moved out of the band, APC
5 has proposed a private ne~;ulidliùl- between the parties. This is s-lhst~ntirllly what has been proposed by the FCC in FCC Notice of Proposed Rule Making, "In the Matter of Redevelopment of Spectrum to Encourage Innovation in the Use of T~ "ln,;. .~ nS Technologies", ET Docket No. 92-9, Adopted January 16, 1992,Releiased February 7, 1992. Under this ne~;ulialt d migration, the 80 MHz Tx-Rx 10 s~alaliull guarantees that when a POFS path is relocated (in frequency), both PCS base station 32 transmit and PCS subscriber lmit 36 transmit frequencies will be available for the PCS system. It is recognized that some microwave links vary from the standard 80 MHz transmit - receive separation. In these isolated cases, moving the microwave link into another frequency band does not guarantee tha.t both PCS base station 32 transmit 15 and PCS subs~ unit 36 transmlt L~ will be made available to the PCS
system.
In this scenario, Licensee A has initiated PCS service in portions of the Washington - Baltimore market area. L;icensee A has determined that it will e,<tend its PCS service to National Airport and the Crystal City area of Arlington, VA. The precise 20 service area and expected demand have been determined by the mr~rk~ing and planning groups of Licensee A. It is now the job of the radio frequency (RF) engineer to design a new base station 32 to serve the targeted ar.ea. The RF engineer accesses the CUC 50 to assist in this process.
A l~ bt:lllaLiull of the main menu 122 of the CUC 50 is provided as Figure 9.
25 The PCS base station database 92 bu~ illillg the CUC 50 contains entries for each base station 32. Sample database entries for two .~ b~llldtive hypothetical PCS base stations, "Chester Building" 322 and ''Smith Office Building" 323, are provided as the table in Appendix ~I. The POFS database 90 supporting the CUC 50 contains entries for every microwave station in the region. This would include all microwave stations30 which could cause or receive interference from a PCS system. The criterion for inclusion could be a fixed mileage b~,udldLiull, a ~uuldilldl~ block or by county. Sample WO 96134~;01 1 ~, I I I ~. I I~S

24 ~ ~ q3 74 1 database entries for six It'~ llLlliV~ POFS microwave stations (3 paths) are provided as the table in Appendix I.
The RF engineer can identify several buildings as good potential candidates for the new base station 32 by accessing aerial or satellite pl.otu~ ",l~, building data and/or 5 topographic maps of the area stored el~ ulu~lly in databases 70 supporting the CUC
50. The RF engineer now examines the operating p~r:~m~t~r~ of the base station 32 (antenna, power, height, frequencies) to design a facility that will meet the coverage and capacity targets.
The RF engineer uses the CUC's 50 propagation models to examine coverage predictions for each potential site. A data base entry is created for the new base station 32 which allows alternate sites, multiple antenna configuratiorLs, antenna heights and radiated powers all to be easi]y examined by modifying the base station 32 p~lnlllr~
The coverage predictions are overlayed on the digitized rnaps of the area and displayed on a system monitor 78. The RF engineer can also direct these displays to the sy.stem plotter 77 to create hard copies of the images for progress report meetings with site acquisition, marketing and management personnel.
After e~:~mining the coverage predictions of several potential sites, the RF
engineer settles on the "~eff Davis" location as the best potential site for the new base station 321.
To calculate covera~,e, the RF engineer selects the Theoretical Propagation Analyses 124, Coverage Option 126 from the CUC main menu 122. The CUC 50 then allows the RF engineer to select the propagation model to be used in the analysis. Tn the preferred embodiment, a variety of models are offered: Free Space, Hata, Longley-Rice and a ~Iv~lielcll.y model developed by the licensee. In this case, the RF engineer select.s the Hata propagation model of the type described in ~asaharu Hata, "Empirical Formula for Propagation Loss in Land Mobile Radio Services", IEEE Transactions on Vehicular Technology, ~,/ol. VT-29, No.3, August 1980. In the preferred embodiment, the propagation prediclion models acoess information contained in the terrain and building ~l~t~h~c The CUC 50 allows the RF engineer to adjust the service threshold (i.e., the minimum signal strength required by the receiver to provide reliable service) utilized WO 96/34~0 1 , ~
2~374~
in the study. The service threshold is utilized by the CUC 50 in the ~1e~ n of channel availability as described below. In this case, the RF engineer selects a service threshold of -96 dBm.
The CUC 50 predicts coverage by ~Rlrl31Rting the signal level at a series of points 5 130 in the vicinity of the site. These points are arranged in a grid 135, centered on the base station 321. The RF engineer cam adjust the size of the ~O~;.a~hic area included in the study by adjusting the size of the grid 135. In general the grid 135 size is selected to coincide with the base station 321 coverage area. The detail, or ~;...i..i...~.~, of the study is adjusted by selecting the number of pomts 130 within the grid 135. Increasing the number of points 130 in the grid 135, increases the number of ~Rl~lllRtions and therefore affects the length of time necessary to cormplete the study. The number of grid points 135 is, therefore, selected to balance detail and speed. In this case, the RF
engineer selects a fifteen by fifteen ~15 by 15) grid 135 with twenty (20) seconds of longitude between each colurnn and fifteen (15) seconds of latitude between each rou.
This area is d~ lidl~ for the theoretical grid 135 based upon a 1.67 mile base station service radius described below. The grid 135 selected for the Jeff Davis site is shown on Figure 10.
The CUC 50 allows the RF engineer to designate certain grid points as critical points 137. This designation is used by the CUC 5() in the delt~ laLion of channel availability as described below. The RF engrneer can specify critical points 137 in a variety of ways; all grid points 130, points within a specified distance or individually by row and column. In this example, the RF engineer rl~ignRttls all grid points 137within 1.67 miles of the base station as critical. C3n Figure 10, critical grid points 137 are shown as "+" marks, non-critical grid points 139 are shown as "x" marks. The grid point coinciding with the base station 321 site is shown as a circled "+" mark.
If the predicted signal strength value at a critical grid point 137 is below theselected service threshold, the CUC 50 provides the RF engineer with a report. This allows the RF engineer to modify the base station parameters to better serve the critical area.s, or re-designate the particular grid points 130 as non-critical 139.
The grid points, critical ~ ignRtinn and predicted signal strength values are stored in the PCS database 92. In this example, one of the grid points, grid point (rou 5, WO 96134~01 PCI~/US96105778 26 2~ ~3741 column 6), is critical and the predicted Jeff Davis signal strength value at this point is -89.4 dBm. This predicted value is above the selected -96 dBm threshold.
Once the RF engineer has d~ i"eil the palcul~~ for the proposed base station that will allow the new facility to serve the targeted area, he uses the CUC 50 to 5 ~ tf~rrnin~o the channel availability at the new facility.
The base station ~ selected for the new site, Jeff Davis 321, are depicted on the table of Appendix J. The CUC 50 is used to perform an analysis of channels that can be used at the Jeff Davis site and by bilbD~l;lJC~l units 36 in the Jeff Davis service area without i~ f~ to or from POFS stations (illt~.sybl~ interference analysis) or 10 other PCS base stations 32 (intrasystem i~ f.,.~ analysis~ using theoretical ai~nliuli prf-riiftirm~ These analyses yield the Available Channel List (ACL) for the new base station.
The RF engineer begins by selecting the Theoretical Pl~lua~ lin~n Analyses 124, ybk:lll Evaluation 127 from the main menu 122 of the CUC 50. A flow chart for 15 the ill~ ybl~lll il,t~lLt~ analysis is provided as Figure 11.
Referring to Figure 11, the RF engineer selects tl-e propagation model 200 to beused in the analysis. In this case, the RF engineer selects the Hata propagation model.
The CUC 50 then provides the RF engineer with the u~ullullily to adjust the PCS-POFS illie.L~ criteria 202. The default values for interference to PCS facilities 20 from cochannel POFS facilities is 12 dB. This means that the desired PCS signal strength must be at least 12 dB above the undesired POFS signal strength for interference free service. The adjacent channel illk~ criteria is dependant upon the number of MHz the PCS channel is removed from the POFS carrier frequency. For PCS channels imm~ iA~ly adjacent to a POFS channel (5.1 MEIz removed from the 25 POFS carrier frequency), the default il~t~ik:l~.,ce criterion is 0 db. For PCS channels 5.3 MHz removed from the POFS carrier frequency, the default interference criterion is -10 dB. In this case, the RF engineer does not adjust the default criteria.
The default interference criteria to POFS stations from l'CS facilities utilizes EIA
Bulletin 10 (Electronic Industries Association, Engineering D~ lll, EIA/TIA30 TPIecf~mmlmir~til~ns Systems Bulletin, "I.lt~.L~ e Criteria for Microwave Systems in the Private Radio Services", TSBtO-E, November 1990) definitions for interference, ~ 27 2 1 9 3 7 ~ ~
e.g., a 1 dB ~egr~ inn to 30 dB signal to noise (S/N) for analog POFS links and a 10-6 to 10-5 bit error rate ~BER) degradation for digital POFS links. In applying these criteria, the "standard" Bulletin 10 methodology enforces an interference level relative to threshold s~.~iLivily without consideration of received signal levels or fade margins.
This standard m~tho-l~logy creates some anomalies which need to be corrected.
For example, consider a 1 mile microwave path and a 10 mile microwave path with identical lll,ns.llilli"g and receiving equipment. Under the "standard" methodology, the undesired PCS signal level necessary to cause i~ is the same for both paths although the shorter path operates at a higher receive signal level, has a greater operating margin over the receiver threshold and therefore could tolerate a higher undesired PCS signal level than the longer path.
A number of possible rn~ fi~ rlns to the Bulletin 10 standards have been proposed and FCC Docket No. 92-9 provides a forum for industry comment on these proposals. In the preferred embodiment, the CUC 50 will provide the RF engineer with the industry accepted criteria for PCS-POFS i.,l~lf~l~.,c~ with the possibility of utilizing alternate methods.
In this scenario, the RF engineer selects 202 the following method of ~ Al~nl~ing interference to POFS stations from PCS stations:
1. Analog microwave links require 16 dB above noise (thermal or interference) to maintain 30 dB S/N. Digital links require 26 dB above noise to maintain 10-6 BER.
2. Calculate the fade margin required for the microwave link as a function of path distance cubed, i.e., fade margin = 30 log D where D is path length in miles.

3. Calculate the desired POFS unfaded receive signal strength, subtract 16 or 26 dB as 1l~ plu~ , subtract the required fade margin. This yields the allowed undesired PCS signal level. In no case will the undesired PCS signal level be required to be less than 6 dB below thermal noise ~kTB + NF), i.e., 99 dBm - 6 dB = -105 dBm.
To evaluate in~ ,y~L~lll interference under the selected criteria, the CUC 50 retrieves the operating parameters of the first POFS facility, WXX818, from the POFS
database 90 and the parameters of WXX819, the other side of the point-to-point microwave path, step 204 in Figure 11. These l~ JWdV~ station pal~,~l,eL~l~ are first WO !i6/34501 PCT~US96/0577X
l ', 28 ~ ~ 9 3 7 4 1 utilized to calculate the desired unfaded receive signal level at WXX818 of the signal transmitted from WXX819 on 1935 MHz. This microwave channel, l935 MHz, occupies a 10 ~z band from 1930 to 1940 MHz The r~lr~ ti~n of the unfaded receive signal is made by taking the WXX819 5 transmitter power output, 25.0 dBm, subtracting the WXX819 ~ .,. line loss, 6.0 dB, adding the WXX819 transmit antenna gain, 33.1 dBi, r~ tin~ and ~ub~ x the free space path loss from WXX819 to WXX818, 120.2 dB, adding the WXX818 receive antenna gain, 33.1 dBi and subtracting the WXX818 tr;~nsmicsi.-n line loss, 2 dB. The unfaded receive signal is -37.0 dBm. The path length from WXX819 to WXX818 is 7.8 10 miles, therefore, the required fade margin is 26.8 dB. Since this is an analog path, the allowed undesired PCS signal level is -37.0 - 16 - 26.8 = -79 8 dBm. The total interference power from all PCS cochannel and adjacent channel sources, therefore, must be less than -79.8 dBm.
The CUC 50 then retrieves the receiver selectivity p~lr~ cu-ce ~P. ;~i. ,.li....15 from the WXX818 database entry. This p~rforrn~nrP spprifir~ti~n tabulates how well the receiver rejects power from signals outside the 1930-1940 MHz band. In this example, the WXX818 receiver Attrn~ tl~s signals between 5 and 7 MHz removed from 1935 MHz by 6 dB, signals between 7 and 10 MHz removed from 1935 MHz by 15 dB and signals more than 10 MHz removed from 1935 MHz by at least 60 dB. This tabulation 20 allnws the CUC 50 to calculate signal levels from PCS channels adjacent to the 1930-1940 MHz band.
Since PCS subscriber units 36 for Licensee A operate in the 1850-1875 MHz band 106, they have no impact on WXX818 reception of 1935 MHz. Potential interference to WXX818 comes from PCS base station operation in the 1930-1955 MHz band 111.
25 Therefore, the CUC 50 retrieves the undesired signal strengths for all other PCS base stations 32 from the WXX818 database entry. The CUC 50 also retrieves each PCS base station ACL. The CUC 50 sums the total received power from all other PCS base stations 32 that use frequencies cochannel and adjacent to 1955 ?~,IHz to determine how much power can be ~WIllibUlt~d by the Jeff Davis site 321 v~ithout exceeding the -7g.8 30 dBm iI-t~lr~ ce criteria, shown as 206 in Figure 11. In this case, all other PCS base WO g6/34501 PCT/US96/0~778 29 ~ j 9 3 7 4 ~
stations 32 using frequencies cochannel and adjacent channel to 1955 MHz have a combined signal level of -86.2 dBm.
At step 220 of Figure 11, the CUC 50 then calculates the undesired signal strength from the Jeff Davis site 321 at the WXX818 receiver. The Jeff Davis effective radiated power (ERP) in the direction of WXX818 is calculated from the antenna, 11~L~ iLLL
and tr;lncmisci(~n line ilLfu~ liulL stored in the Jeff Davis database entry. The propagation loss between Jeff Davis and WXX818 is then determined from the selected Hata propagation model. The predicted Jeff Davis s;gnal strength is then adjusted by the WXX818 receive antenna gain in th.e direction of Jeff Davis and the receive antenna polarization discrimination. This analysis yields the undesired received signal strength frûm Jeff Davis at WXX818. The undesired Jeff Davis signal strength value is stored in the WXX818 database entry 222.
If the undesired JefÇ Davis received signal strength at WXX818 is greater than -79.8 dBm then all cochannel PCS base station transmit channels, channels one through fifty (1-50) for Licensee A, and all adjacent channels, channels fifty-one through seventy-five (51-75) for Licensce A, are removed from the ACL at step 224 of Figure 11.
Removing these PCS base station chamtels from the Jeff Davis ACL also removes the paired PCS subscriber unit frequencies from use in the Jeff Davis service area. In this example, the calculated undesired Jeff Vavis signal level is -89.1 dBm.
The use of a single PCS channel in the 1930 - 1940 MHz band at Jeff Davis increases the total power received by WXX818 from all PCS interfering sources from -86.2 to -84.4 dBm. Adding the -89.1 dBm (1.2E-9 mW) signal to the -86.2 dBm (2.4E-9 mW) total power yields -84.4 dBm (3.6E-9 mW). Tlhe table of Appendix K provides details on the r~lr~ fions of total intorfl~ring power. This total power is below the allowed -79.8 dBm limit. Similarly, the use of two PCS channe s in the 1930 - 1940 2-1Hz band at Jeff Davis increases the total interfering power to -83.1 dBm and is still below the 79.8 dBm limit. The CtlC 50 determines that the use of six channels from the 1930 - 1940 MHz band at Jeff Davis increases the total interfering power at WXX818 to -80.1 dBm, and that adding the seventh channel pushes the total interfering power to -79.6 dBm and over the -79.8 dBm limit. Therefore, the CUC 50 provides the RF engineerthe UI~UllL~ y to specify which six channels from the 1930 - 1940 ME~z band will 4~01 . ~
~ 30 2 ~ 9 ~ 7 4 ~
remain in the Jeff Davis ACL. In this case the RF engineer selects channels one through 8ix and the CUC 50 removes channels seven through fifty from the Jeff Davis ACL. The total;, .I~, r~. ;. ,~ power at WXX818 increases to -80.1 dBm as a result of the use of these six channels at Jeff Davis. The selection of a re-use factor in the5 intrasystem analysis described below prov;des the RF engineer the U~l~(JL Lul~iLy to modify which channels from the 1930-lg40, 1940-1942 and 1942-1945 MHz bands remain in the ACL.
The CUC 50 performs a similar process for analyzing PCS channels in the frequency bands ad~acent to 1930 - 1940 MHz. Usually, the CUC 50 would examine 10 frequencies above and below the ~ u..ave channel, however, in this case, frequencies below 1930 MHZ are out of Licensee A's allocated frequency bands 111. PCS
channels in the 1940 - 1942 MHz band are 5 to 7 MHz removed from the center of microwave channel. Therefore, the CUC 50 reduces the undesired Jeff Davis signalstrength by the receiver sel.~Livily: -89.1 dBm - 6 dB = -95.1. There are ten PCS channels 15 in the 1940 - 1942 MHz band, channels fifty-one through sixty (51-60). Utilizing one channel in the 1940 - 1942 MHZ band at Jeff Davis would increase the total interfering power at WXX818 from -80.1 dBm to -80.0 dBm, addmg a second channel increases the total interfering power exactly to the -79.8 dBm limit. Therefore, two channels from the 1940 - 1942 MHz band can be utilized at Jeff Davis, however, the use of two 20 channels from this band would preclude the use of any channels from the 1942 - 1945 MHz band at Jeff Davis. Therefore, although the CUC 50 provides the RF engineer the u~o, LulliLy to select two channels from the 1940 -1942 MHz band, the RF engineer selects a only single channel, channel fifty-one (51), from this band. The CUC 50 removes channels fifty-two (52) through sixty (60) from the Jeff Davis ACL. The total 25 interfering power at WXX818 increases to -80.0 dBm as a result of the use of this channel at Jeff Davis.
Finally, the CUC 50 performs a similar process for analyzing PCS cham els in the1942 - 1945 MHz band. PCS channels in the 1942 -1945 MHz band are 7 to 10 M~lz removed from the center of microwave channel. Therefore, the CUC 50 reduces the 30 undesired Jeff Davis signal strength by the receiver selectivity: -89.1 dBm - 15 dB = -104.1. There are fifteen PCS channels in the 1942 -1945 hfHz band, channels sixty-one ~ wo s6/34sol r~ o~
~ ' 31 ~1~3741 through seventy-five (61-75). The CUC 50 il~t~ormin~c that the use of twelve channels from this band at Jeff Davis increases the total illL~.f~ g power at WXX818 right to the allowed -79.8 dBm limit. The thirteen*. channel from this band would push the total power over the allowed limit. Therefore, the CUC 50 provides the E~F engineer the 5 u~l~ùlt~llliLy to select twelve channels from the 1942 - 1945 MHz band. In this case, the E~F engineer selects channels sixty-one through seventy-two and the CUC 50 removes channels 73, 74 and 75 from the Jeff Davis ACL. The total i..i., ~. . ;"g power at WXX818 increases to the -79.8 dBm limit as a result of the use of these channels at the Jeff Davis base station 321.
The CUC 50 then calculates potential i~lklr~ -.e to Jeff Davis from WXX818's transmit frequency, 1855 MHz. WXX818 I ~ ;cmc on 1855 MHz cannot interfere with PCS ~uba~lib~l unit receive frequencies (1930-1955 MHz) 111 and therefore, the potential interference evaluation is limited to a l-~lrlllAtil~n at the Jeff Davis base station 321. The CUC 50 calculates an undesired WXX818 signal level at the Jeff Davis base 15 station 321 ~as shown as step 226 in Figure 11) usin.g the WXX818 trAncmitt.or power output, antenna gain, antenna radiation pattern and Hata propagation loss. This calculated value is stored in the Jeff Davis database entry 228.
The undesired WXX818 signal strength is then compared to the selected service threshold 230. If the undesired WXX818 signal does not meet the selected 12 dB C/I
20 ratio, then PCS channels one through fifty (1-50) are removed from the Jeff Davis ACL.
If the undesired WXX818 signal does not meet the selected 0 dB C/I ratio, then PCS
channel fifty-one (51) is removed from the Jeff Davis ACL. If the undesired WXX818 signal does not meet the selected -10 dB C/I ratio, then PCS channel fifty-two (52) is removed from the Jeff Davis ACL. In this example, the undesired WXX818 signal 25 strength is -110.2 dBm and is more thar. 12 dB below the selected -96 dBm threshold.
Therefore, WXX818 transmission on 1855 ME-lz has no effect on the Jeff Davis ACL.
An undesired WXX818 signal level is also calculated at each Jeff Davis grid point 130 even though WXX818 Llal~ iulls on 1855 MHz cannot interfere with PCS
~UlJS~ uLnit receive frequencies (lg30-1955 MHz), as shown as 232 in Figure 11.
30 These fAiclllAti~ns are made at each grid point 130 for later comparison to CW

Ç ~ i 9374 ~ --measured values in the MDA evaluation described below. The "expected" undesired WXX818 signal level at each grid point is stored in the Jeff Davis database entry 234.
When the CUC 50 completes its analysis of potential illt~.f~ e to and from WXX818 it then retrieves the next POFS microwave station, WXX819, as step 204 in5 Figure 11, for illk~Dy~ evaluation 127.
The desired un.faded receive signal level at WXX819 of the signal Ll.Lns.l.itl~dfrom WXX818 on 1855 MHz is calculated exactly as described above for WXX818. This illi~l.:)~VllVt~ channel, 1855 MHz, occupies a 10 MHz band from 1850 to 1860 MHz. Sillce PCS base stations for Licensee A operate m the 1930 - 1955 MHz band, they have no lO impact on WXX819 reception of 1855 MHz. As shown in step 208 in Figure 11, potent;al interference to WXX81g comes from PCS ~Ub~ l unit operation in the 1850 - 1875 MHz band 106. In this case the desired unfaded receive signal level at WXX819 is -36.6 db.m and the total allowed int.orf~ring power is: -36.6 - 16 - 26.8 = -79.4 dBm 210.
For a GSM type PCS al.l.iLt.tul~ with 8 voice channels per carrier, as many as 15 eight bUb~ ;bel units at a given grid point could utilize the same frequency. Since each unit would operate in a distinct time slot, however, the potential illlt lrt.tl-c~ from these units should not be add;tive. For a Qualcomm CDMA type PCS architecture, as many as 40 or more subscriber units could utilize the same frequency at the samelocation at the same time. For this type of al~l.it~lul~, the CUC 50 would include the 20 additi~e effect of multiple subscriber units 36 at each grid point 130 in the interference analyses.
To determine how much power can be ~ tlll~ul~ by ~UI~s~l;L... units 36 in the Jeff Davis service area without e~cceeding the total allowed interfering power at WXX819, the CUC 50 retrieves from the WXX819 database entry, the undesired signal strengths from the "worst case" grid point of all other PCS base stations 32. The CUC 50 also retrieves the ACL for each PCS base station 3Z. The CUC 50 then sums the total received power from PCS subscriber units 36 at the worst case grid points of all PCS base stations that use frequencies cochannel and adjacent channel to 1855 MHz. In this case, the total received interfering power level is -99.3 dBm.
The CUC 50 then calculates the undesired signal strength at the WXX819 receiver from a subscriber unit 36 at each Jeff Davis grid point 210. The undesired WO 96~34501 PCTIUS96105778 33 2 ~ 9~ 74 j signal level is calculated from the sul/b-l;be l unit EI~P and the Hata propagation loss and is adjusted by the WXX819 receive antenna gain in the direction of the Jeff Da~ is grid point and the receive antenna polarization .ii,.. ~ . This analysis yields the undesired received signal strength at WXX819 from a ~ .l;b~l unit at each Jeff 5 Davis grid point. The highest undesired received signal strength, i.e., the undesired signal from the "worst case" grid point, is stored in the WXX819 database entry 212. In this example, the worst case Jeff Davis grid point (row 3, column 4) produces anundesired signal level of -102.6 dBm at WXX819.
Grid points 130 that do not receive a desired signal from the Jeff Davis base 10 station 321 above the selected service threshold (-96 dBm), are not included in the interference analyses. The rationale for this exclusion is as follows: if a subscriber unit 36 cannot receive service from a ba.se station 32 at a given grid point 130, it cannot operate on a frequency assigned by that base station 32 and therefore, cannot be a source of potential interference to a POFS station (or other PCS base station). F~ hC~ILIIUI~ if 15 the desired signal at a given grid point 130 is ;.,,~rr;~ to provide service, the signal level from an undesired source is not i~ ullal.L
The CUC 50 then performs an analysis of channels in the 1850 - 1860, 1860 - 1862and 1862 - 1865 MHz bands that can be used at the worst case Jeff Davis grid point without increasing the total interfering power, -9g.3 dBm, over the allowed -79.4 dBm 20 limit. This analysis is virtually identical to the process described above for the 1930 -1940, 1940 - 1942 and 1942 - 1945 MHz bands. Because the PCS system and the POFSstations utilize an 80 MHz transmit-receive separation, the limits on frequency use at Jeff Vavis imposed by lulul~-Liul- requirements to WXX818, have reduced the potential channels in the 1850 - 1860 MHz band to six, the potential channels in the 1860 - 1862 25 MHz band to one and the potential channels in the 1862 - 1865 MHz band to twelve. In this case, the use of all of these channels at the worst case Jeff Davis grid point (row 3, column 4) does not increase the total interfering power at WXX819 above the -79.4 dBm limit.
The CUC 50 then calculates potential interference to Jeff Davis from WXX819's~0 transmit frequency, 1935 ~fHz, as shown in step 23h of Figure 11. WXX819 iUll~i on 1935 MHz cannot interfere with PCS base station recei~e frequencies wo g6~34s0l 2 ~ 9 3 7 ~ ~ PCIIUS96105778 (1850-l875 ~z) and therefore, the potential i~lclrc~ e evaluation is pc~rul~lL.d at each Jeff l~avis grid point. The CUC 50 calculates an undesired WXX819 signal level at each Jeff Dav;s grid point 130 using the WXX819 ~ Dlllillcl power output, antenna gain, antenna radiation pattern and Hata ~lu~ aliun loss. These calculated values are 5 stored in the Jeff Davis database entry 240.
As shown in step 244 of Figure 11, ât each grid point 130, the undesired WXX819 signal level is compared to the desired Jeff Davis signal level calculated above in the Theoretical Propagation Analysis 124, Coverage 126 analysis. If the WXX819 signal strength is too high at a critical grid point 137 receiving a desired signal above the 10 selected service threshold, the dlululupLi~l~e PCS channels are removed from the ACL. If that grid point is not dPsign ~t~d as critical, the predicted interference is reported but the channel is not removed from the ACL. In this example, at grid point (row 5, column 6) the desired Jeff Davis signal strength is -89.4 dBm and the undesired WXX819 value is -104.3 dBm. At this critical grid point 137 the 12 dB C/I cochannel ratio and both 15 adjacent channel ratios are met.
As shown in step 248 of Figure 11, an undesired WXX819 signal level is also calculated at the Jeff Davis base station even though WXX819 tr:lncmi~sicmc on 1935 MHz cannot interfere with PCS base station receive [lc-lucllcics (1850-1875 MHz) 106.
This ~lc~ n~ is made for later ~:UIlLIJaliDull to CUV measured values in the l!vlDA
20 evaluation described below. The "expected" undesired WXX819 signal level at the Jeff Davis base station 321 is stored in the Jeff Davis database entry 252.
The illlclDyDLclll interference analysis is completed when all POPS stations in the database 92 have been evaluated, as shown m step 256 of Figure 11. As shown as step 260 in Figu:re 11, the completed ACL is stored in the PCS base station database 92. The 25 CUC 50 then provides the RF engineer with detailed reports and graphic displays of the illLclDyDlclll interference analysis.
After completing the illtCl~yDlcll~ interference analysis, the RF engineer selects the Theoretical Propagation Analyses 124, Il~ DYDlC,lll Evaluation 128 from the main menu 122 of the CUC 50. A flow chart for the intrasystem interference analysis is 30 provided as Fixure 12.

WO 961345Ul . PCT/US~6105778 ~ : L
35 ~ ~ 937~ ~
The CUC 50 allows the RF engineer to apply a frequency re-use factor to the ACL
for the Jeff Davis site 280. If a hPx~gon~l grid 300, consisting of hexagonal cells 303, is used as the basis for base station 32 site locations, a frequency re-use factor can be employed to fix cochannel frequency re-use within the system to regular geographic separations. The re-use factor can be ~l~t~rrninpd from the following ~ as described in V. H. MacDonald, "The Cellular Concept", The Bell System Technical Journal, January 1979, Vol. 58, No. 1.:
N = i + ij ~ j where i,j are integers and i >= j A frequency re-use plan helps control i~ a~y~L~lll interference and is used in the cellular industry. Because of the low antenna heights and the discrete base station 32 coverage areas of a PCS system, it is believed that fixed frequency re-use plans will be too inflexible for a mature PCS system. However, in the preferred embodiment, the CUC 50 pro~ ides the capability of utilizing a frequency re-use factor.
For the GSM type PCS system described herein, the RF engineer utilizes an N=3 frequency re-use factor (i=1, j=1) in the channel availability ~l~h~rTnin~ n The PCS
sites fall on a theoretical grid 300 based upon a base station service radius of 1.67 miles.
A map of the PCS base station sites and the theoretical grid 300 is included as Figure 13.
An N=3 re-use plan di~ides the PCS ch~mnels into three groups. The channel groups, 1, 2 and 3, are assigned to base stations on the theoretical grid 300 on a one-up (i=1) and one-over (j=1) pattern as depicted on Figure 14. The RF engineer also uses a three sector system, i.e., three 120~ antennas are utilized instead of an omnidirectional antenna, at some sites to decrease i~ aDyDl~lll cochannel interference. The three sector system divides each of the three channel groups into three sub-groups as shown on the table in Appendix L.
Using the N=3 re-use pattern, the RF engineer selects the ap~,iop.;att: channel group for the Jeff Da~is site 132, i.e., Group 1. Since the RF engineer has selected an omnidirectional antenna for the Jeff Da~ris site 132, i.e., it is not a sectorized site, the ACL can include channels from Groups lA, lB and lC. However, as a result of the DyD~ l interference analysis, the ACL is limited to six channels from the 1930 -1940 I~Hz band, one channel from the 1940 -1942 MHz band and twelve channels from the 1942 - 1945 MHz band.

wo g6/.~4so~ f The CUC 50 then provides an opportunity for the RF engineer to modify the selected channels in the ACL to conform to the channel re-use plan he has selected. In order to comply with the interference protectiQn requirements, the RF engineer selects the follQu~ing channels from the 1930 - 194(i MHz band:
From Group lA- 1, 10, 19, 28, 37, 46 From Group lB: none From Group lC: none and the following channels from the 1940 - 1942 MHz band:
From Group lA: 55 From Group lB: none From Group lC: none and the following channels from the 1942 - 1945 MHz band:
From Group lA: 64, 73 From Group lB: 67 From Group 1C: 61, 70 In addition the following channels are not precluded by the i~ Dy~ ll interference analysis, are ~ lpa~ilJlc with the selected re-use plan and therefore are included in the ACL:
lE rom Group lA 82, 91, lon, 109, 118 From Group lB: 76, 85, 94, 103, 112, 121 From Group lC: 79, 88, 97, 106, 115, 124 The RF engineer then selects the base stations 32 to be included in the a~y~ interference analysis. The RF engineer can select these base stations 32 in a variety of ways: individually from a master list, within a fixed distance, cochannel sites ~5 or adjacent channel sites. In this case, the RF engineer only includes the two base stations 32 shown in the table in Appendix H in the illLt:lf~ cc~ analysis. The illlla~yslt:.l, interferen~e analysis is performed by fAl~iAting the signal level of each base station 32 included in the study at each Jeff Davis grid point 130. Additionally, the y~ l illtt:l t~l~llC~ analysis calculates the signal level from the Jeff l:)avis base station 321 to the grid points 130 of each of the other base stations 32 included in the study.

WO 96~34!;UI PCTIUS96J0577X
~ 1 9 3 7 4 l The RF engineer then selects the propagation model to be used in the interference analysis 284. In this case, t~he RF engineer selects the Hata ~IU~a~;dLi~
model.
Finally, the RF engineer can adjust the interl:erence criteria used in the analysis 5 288. In this case, the RF engineer selects a cochannel il"tlrt.tl..c criterion of 12 dB.
The RF engineer selects an adjacent channel illLt.rt.tl..t criterion of -10 dB.
To evaluate potential intrasystem i..lt.~.c..ce, the CUC 50 calculates the predicted signal strength from the first selected base station, Chester Building 322, to each of the Jeff Davis grid points using the selected ~ a~aLiull model in step 324 of 10 Figure 12. The CUC retrieves the operating p~ ... f~ ~r. of the Chester Building base station 322, retrieves the coordinates of the first grid point 130, verifies that the calculated desired signal strength is above the service threshold 332 and checks to see if the grid point 130 is a critical point 137. The effective radiated power (ERP) from Chester Building 322 to the first grid point 130 is calculated from the antenna radiation 15 pattern, antenna Ul;t'llL~ I, tr~ncmittPr power and transmission line loss. Since the Chester Building site is a sectored site, ~he CUC calculates the ERP from each sector to the grid point 130. The ~ agaLi~ loss between C'hester Building 322 and the gridpoint 130 is then deterrnined from the selected prc,pagation model. The undesired signal strengths from the Chester Buildiing sectors are rlP~PrminPd from the ERPs and 20 the p.~,~a~;a~i.,n loss. The calculated undesired signal strengths are stored in the Jeff Davis database entry 336.
The calculated undesired signal from each C'hester Building sector is compared to the desired signal strength from the Jeff Davis site calculated in the coverage analysis described above. If the desired to undesired signal strength ratio does not meet the 25 cochannel i lit..rt.t...~ criteria at a critical grid point 137, the CUC 50 removes the channels from the ACL that are cochannel with the channels in the specific Chester Building sector, as shown as step 344 in Figure 12. For example, the calculated desired signal strength at grid point 1.30 (row 5, a)lumn 6) is -89.4 dBm and the calculated undesired signal strength from Chester Building Sector 2 (antenna orientation = 165~) 30 is -~4.3, the C/I ratio at this grid point 130 is only 4.g and does not meet the specified 12 dB criterion. Since grid point (ro~v 5, c olumn 6) is a critical point 137, all channels in ~VO 96/345U1 l ~ Il~. 0! 1 l~
38 ~937~ -the Jeff Davis ACL that are cochannel with the channels in Chester Building Sector ?
are removed from the ACL. In this case Group lB channels; 67,76, 85 and 94 are removed from the Jeff Davis ACL.
Similarly, if the desired to undesired signal strength ratio does not meet the adjacent channel interference criteria at a critical grid point 137, the CUC 50 rernoves the channels from the ACL that are adjacent to the channels in the specific Chester Building sector 344. In this case, the adjacent channel interference criterion is met at every leff Davis grid point 130.
The CUC 50 also calculates the received signal strength at the Chester Building lQ site 3Z from a ~1,1.~,. . ;1,~, unit 36 at the Jeff Davis grid point 130. The undesired subscriber unit signal level is calculated from the subscriber unit ERP and the Hata ~Iu~Jagdliul~ loss and is adjwsted by the Chester Buwlding receive antenna gain in the direction of the Jeff Davis grid point 130. To apply the cochannel and adjacent channel interference criteria, the CUC 50 utilizes the selected service threshold, -96 dBm, as the 15 desired signal level at the Chester Building base station 322 and compares this value to the wndesired Jeff Davis sul,s.l;lJel unit 36 signal strength. If the undesired sub~libt:r unit 36 signal level is not at least 12 dB below the service threshold, the CUC 50 removes cochannel frequencies from the ACL. Similarly, if the adjusted undesiredsul,~libel unit 36 signal level is more than 10 dB above the service threshold, the CIIC
20 50 removes adjacent channel frequencies from the ACL. LT1 this case, the cochannel and adjacent channel interference criteria are met at the Chester Building base station 322 from every Jeff Davis grid point 130.
The CUC 50 then performs an analysis of potential interference between the Jeff Davis base station 321 and each Chester Building grid point 130, as shown in step 348 of 25 Figure 12. This analysis is identical to the analysis described above for interference between the Chester E~uilding base station 321 and the Jeff Davis grid points 130. The expected wndesired Jeff Davis signal strengths at each Chester Building grid point 130 are stored in the Ches~er Building database entry. In this case, no further adjustments to the Jeff Davis ACL are necessary.
After completing the evaluation of the Chester Building site 322, the CUC 50 retrieves the parameters of the Smith Office Building site 323 and performs the same WO 96~34sOI PCT~US96105778 ~ 39 21~37~1 potential interference analysis as des~ibed above. The Jeff Davis site 321 does not have any frequencies that are cochannel to nor adjacent channel to any frequencies at the Smith Off;ce Building site 323. N~v~ tl~, the CUC 50 calculates the signal levels from the Smith Office Building site 323 to each Jeff Davis grid point 130 and from the 5 Jeff Davis site 321 to each Smith Office Building grid point 130. These ~Al~nl:ltions are made and stored in the respective database entries, as shown in step 352 in Figure 12, for later comparison to CW measured values in the MDA evaluation described below.
The CUC 50 then provides the RF engineer with detailed reports and graphic displays of the ilL~la:~y~ lrr,.el,ce analysis.
After completing the theoretical analysis of the Jeff Davis site 321, the RF
engineer utilizes the Test Mobile Unit (T M U) 68 to obtain lllea~ulr~ul~l,l data which is used to verify coverage and i~ ft ~ predictions. In the preferred ~llbodill~ ilt, the T M U 68 is a portable device which allows a field ~ hni/ i~n to traverse the intended service area of the Jeff Davis base station 3Zl and collect measured signal strength 15 readmgs on POFS channels and l'CS control channels. This data is collected by the T M U 68 by p~lfullldl~g the CUV ~.v.r dult.
The TMU 68 also associates a coordinate location with each set of CW
mea:,u,r~ ,t~. This can best be accomplished by including a GPS receiver in the TMU
68. Alternatively, the position of the T M U 68 can be supplied manually or the CUC 50 20 can triangulate the position by eY~mining the relat;ve signal strengths of the measured PCS base station 32 control channels.
The CW plv~dulr~ involves tuning a receiver to each POFS Illi~_lU.~ aVr~
channel, in turn, ~ m i~ ,g the received power in that channel and retaining themeasured data for uploading to the CUC 50. The CU~r 1 lv~ulLIlr~ also involves 25 m~ cnring the received power in each PCS control channel (base station 32 transmit).
This information is similarly retained for uploading to the CUC 50. The Test Mobile Unit 68 can also upload the measured data real-time to the CUC 50 by accessing a voice channel from the PCS base station 32 and dialimg directly into the CUC 50.
Alternatively, the Test Mobile Unit 68 can store the measured data on a floppy disk, or 30 other medium, for later uploading to the CUC 50.

WO 96/34501 1 ~
t ~ ~; 40 2 ~ 9 3 7 ~

In the preferred embodiment, the TMU 68 allows the field technician to select which POFS and PCS channels are included in the CUV. Licensee A does not requireinformation on microwave paths that do not utilize transmit or receive frequencies in the 1850-1875 MHz or 1930-1955 MHz bands. Therefore, the TMU 68 can be 5 L,lvg.a.,.l..ed to measure only certain preset POFS channels. Similarly, the TMU 68 only needs to measure PCS channels that are used as control channe]s. The RF
engineer may not want measured data on voice channels that might not be active at the tirne the m~r~ tS are taken. Therefore, the PCS charmels measured by the TMU 68 can also be ~ all~-~led.
When the CUC 50 receives the CW measured data, the RF engineer can perform the measured data analysis (MDA). The CUC 50 compares, POFS channel by POFS channel, the values measured by the TMU 68 against the expected values stored in the Jeff Davis database entry. This process protects POFS stations against il.le.f...:..ce ~ from PCS :,ul,s.. ib~:- unit 36 transmit L~lu~ ieb and protects against receiving 15 interference at PCS subscriber units 36 on PCS base station 32 transmit frequencies (PCS
~ub~libel unit 36 receive frequencies). The CUC 50 also compares, PCS control channel by PCS control charmel, the values measured by the TMU 68 against the expected values stored in the Jeff Davis database entry. This process protects other PCS
base stations 32 against i..t~,r~.e...~ from PCS subscriber units 36 in the Jeff Davis 20 ser~ice area and protects against PCS ~ub~..;l,~- units 36 in the Jeff ~avis service area receiving i..l~l[~....c~ from other PCS base stations 32.
The CUC 50 provides the RF engineer the op~ ullily to select the desired tolerance between expected values and CUV measured values. This tolerance is used by the CUC 50 to identif,v measured values that are more than the selected tolerance 25 above or below the expected values. In this case, the RP engineer selects a tolerance of 6 dB.
In evaluating the measured data from the TMU 68, the CUC 50 retrieves the first set of CUV lllta~ulr~ elll~ and utilizes the ~Rc~ci~tecl coordinates to determine the closest grid point 130. The measured TMU 68 data is then compared with theoretical 30 values stored in the Jeff Davis database entry for that grid point 130.

_ WO96/34501 r~"~ s t i~ ' 41 2 ~ ~ 3 7 ~ ~

For each POFS channel, the CUC 50 retrieves the expected value for all cochannel I'OFS stations and selects the POFS station with the highest expected value.
Because of the relatively large geographic s~Jal~liu.ll of cochannel re-use by POFS
stations and because of the highly directional nature of POFS Lldl~ 11!., in the vast 5 majority of cases, a single POFS station will have an expected signal strength far exceeding all other cochannel stations. In cases where the POFS station with thesecond highest expected value is within the selected tolerance of the station with the highest expected value, the CUC 50 reports the stations and the expected values to the RF engineer. In these cases, if measured values for each POFS station is critical, the 10 field technician can replace the T~1U's 68 omnidirectional antenna 70 w;th a highly directional antenna 71 and design a C W measurement procedure that allows separate ul~ to be taken on each POFS station.
At each grid point 130, the CUC 50 then compares the expected value of the POFS
station, to the measured value obtained in the TMU 68 CW procedure. If the 15 measured value is within the selected tolerance of l:he expected value, the CUC 50 does not modify the ACL. If, however, the measured value is more than the selected tolerance higher than the expected value, which might occur, for example, where a line-of-sight condition exists between the PCS base station 32 and the POFS station and a Hata propagation prediction method was used for the theoretical analysis, the CUC 50 20 compares the measured value to the desired Jeff Davis sig~nal strength at that grid point 130. If the measured POFS value degrades the C/I ratio below the selected cochannel criterion, and the grid point is riPcign~1~d as critical 137, the CUC 50 removes all cochalmel frequencies from the Jeff Davis ACL. Adjacent channels aresimilarly remo~ed from the Jeff Davis ACT. if the measured POFS value degrades the 25 C/l ratio below the selected adjacent channel interference criterion.
In this example, the desired Jeff Davis signal strength at critical grid point 137 trow 5, column 6) is -89.4 dBm and the undesired WXX81g (1935 MHz) value is -104.3 dBm. In this example, the CW measured value for this grid point is -98.1 dBm. In this case, the selected fi dB tolerance is not met nor is the 12 dB
30 cochannel C/l ratio met. Since the ~fDA has detelmined that the use of frequencies cochannel to WXX819 at Jeff Davis would result in received interference at a critical WO 9613.1501 PCTIIJS96fOS778 ~ ~ 2 ~ q ~ 7 4 1 &rid point 137, the CUC 50 removes channels 1, 10, 19, 28, 37 and 46 from the Jeff Davis ACL. In this case, both the 0 dB and the -10 dB adjacent channel interference criteria are met.
The measured CW values at each grid point 130 are stored in the Jeff Davis 5 database entry.
The CUC 50 also examines the paired POFS frequency to see if the PCS system might be causing interference to the POFS receive channel. The advantage of the FAST
system 30 is that by m~cllring the power in the POFS h~n~ d channel, it can fletPrmine if the PCS system might interfere with the pa;red POFS channel received at 10 that location. This is done by r~lr~ tin&r the actual propagation loss between the PCS
base station 32 and the POFS receiver based on the measured power of the POFS signal.
Based upon this actual propagation loss the CUC 50 adjusts the :iUl~b~ I unit 36undesired power at the POFS station. In this case, the measured plrJA4a~ liL~n lc~ss between ~VXX819 and grid point 130 (row 5, column 6) is 6.2 dB less than predicted.
15 Therefore, the CUC 50 calculates the expected signal strength at W7(X819 from a subscriber unit 36 at this grid point 130 and adjusts the Hata ~JlvAJa~ ion loss by 6.2 dB.
In this example, the adjusted signal strength from grid point 130 (row 5, column 6) is -103.5 dBm and is below the -102.6 dBm signal from the worst case Jeff Davis grid point 137 (rclw 3, column 4). This ~:~lc~ tinn is made even if the Jeff Davis ACL does not 20 contain any frequencies cochannel or adjacent channel to WX~C819 so that the "worst case" grid pomt 137 data can be updated if necessary. In this case, no further adju~lA~u~ to the leff Davis ACL or the worst case data is required as a result of this CUV measurement.
If the measured POFS signal strength is more than the selected tolerance below 25 the expected value, the CUC 50 determines if channels could be added to the ACL
without causing i~ nor receiving iA~k:lL~ e from the POFS base station.
lhis might occur, for example, when a cignifi~nt obstruction bloc~s the direct path from the PCS base station 32 to the POFS station. The CUC 50 reports possible channel additions to the system operator for further verification prior to adding the channels to 30 the ACL.

WO 96/34~0 1 1 . ~

After the interference analyses have been completed, the FcF engineer examines the ACL to see if sufficient interference-free channels are available to meet the projected demand. If incllffifi(~nt chamnels are available at the new site with the selected parameters, the RF engineer would examine the PCS and POFS facilities that 5 bloclc channel use at the new site and revisit the base station 32 pal~....elc. selection.
For example, changing from an omnidirectional antenna 70 to a directional antenna 71, a power or height reduction or site move might remove potential interferencebetween the proposed facility and other PCS base stations 32 or POFS facilities, freeing up additional PCS channels at the new site. If necessary, the RF engineer might decide 10 that a POFS facility needs to be relocated in frequency and negotiations with the POFS
licensee would t~r~mm(~n~e In this case, after the interference analyses, the ACL contains the following channels:
From Group lA: 55, 64, 73, 82, 91, 100, 109, 118 From Group lB: 103, 112, 121 From Group lC: 61, 7n, 79, 88, 97, 106, 115, 124 which is sufficient to meet the projectecl demand at the new site.
At this point the site design phase is completed and the RF engineer prints out the parameters of the proposed base station 32 for the site R~q~-iciiion personnel. Once 20 the Jeff Davis site has been acquired and the inc~ ti-7n process has been completed, the base station 32 is ready to go into operation. When the base station 32 is powered on, it performs the CUV and uploads to the CUC 50, the received power in each POFS
microwave channel. When the CUC 50 receives the CUV measured data, the RF
engineer can perform the MDA. Whereas the TMU 68 CW measured data protected 25 against interference between PCS ~ul,~ - units 36 and POFS stations, the base station CUV measured data protects against i~Lclfc.cl.ce between PCS base stations 32 and POFS stations.
ln pelfulll,il,g the MDA, the CU(' 50 compares, POFS channel by POFS channel, the measured values against the expected values stored in the Jeff Davis database entr~r.
30 This proceclure protects POFS stations against interference from Jeff Davis transmit frequencies and protects against receiving illL~Ifc.c~ at Jeff Davis on PCS subscriber WO96/345~)1 PCT~13S9610~i778 .. 2t9374~ --unit transmit freL~uencies (PCS base station receive frequencies). The MDA process for base station CUV data is very similar to the MDA process described above for T~UCW data. The base station ~lA process is bL~ 'hdL simpler, however, in that i,.t~,rt ~ .., evaluations are made at PCS base stations 32 and POFS stations, and do not 5 need to be made at each grid point 130.
ln the preferred ~ vi~ Lll~ the PCS base station CUV procedure can optionally include measured data on each PCS control channel (base station transmit'i.
In an FDD system, this iLlrul~ Lli~ll does not directly relate to any i..l~,F~
condition; i.e., base station transmit frequencies cannot interfere with base station 10 transmit frequencies. This data can be used, however, to draw ~eneral conclusions about potential intra-system i~ .r~lcl~ce, particularly for PCS base stations 32 with low antenna heights. If a measured value far exceeds an expected value, it is likely that bLIba~L;bel units 36 served by the base station 32 will receive h.~lr~ e from and/or cause interference to the undesired base station 32. Measured values far belo~ the 15 expected values indicate the presence of severe path obstructions. Therefore, this data can a.lso be helpful in determining the existence of line-of-sight paths for ~ wLLve illk:l~ul~ne~La.
When all the interference analyses have been completed and the measured data evahlated, only illL-.r,~ llce-free channels remain m the ACL. The CUC 50 sends the 20 ACL to the new base station 32 which is now ready to begin operation on the channels included in the ACL. The FASl system 30 provides one additional feature in the call set-up procedure to minimize illL~-lDy~L~lll and hlLl~ L~lll interference.
In the preferred embodiment of a PCS system, each PCS base station 32 transmits certain overhead information on its control channel. Included in this inforn ation is a 25 base station 32 identification and the base station's 32 ACL. Alternatively, to cut down on system overhead, the ACL ~ on the control channel could be limited toavailable voice channels, i.e. A('L voice channels not currently in use at the base station. When a subscriber places or receives a call, the subscriber unit 36 and the PCS
base station 32 enter the call set-up procedure. Included in this procedure is the 30 Channel Selection Process (CSP) 350 which provides an ~flL1itinn~1 measure of protection against intrasystem and illtL-lay:~LellL iLlt~.Ll~llc~.

~ W096/34501 ~ F~ X~
q ~ 7 When a s- .1 "~ places or receives a call, the DUbD~l;Llt'l unit 36 first measures the power on every channel in the ACL (base station transmit, DUi,' I~I;bt'~ unit receive).
The subscriber unit 36 then transmits to the base station 32 on the control channel (base station receive side of channel pair), a request for a voice channel. Also l.""s~ d to 5 the base stat;on 32 are the lllea5ultllltl~Lb taken by the DUbD~l;Llt'l unit 36 on each of the channels in the ACL.
In the preferred embodiment, PCS base stations 32 continually (e.g., every second) measure signal strengths on every voice channel in the ACL ~base station 32 receive, Dubs.l;l,tl unit 36 transmit). The voice channels in the ACL are then ranked 10 by ~s~-Pn~ling signal strength. Therefore, the channel ranked number 1 currently has the least amount of measurable power in the channel. When the base station 32 receives the DUbD~llLlt'l unit's 36 measured data, it ranks the DUb~l;bt'l unit's 36 channels according to the same criteria. For each channel, the base station 32 adds the subscriber unit rank to the base station rank and selects the channel with the lowest 15 total rank. This is the channel selected for this particular call. The base station 32 then sends a message to the DUbS~ Jt'l ~mit 36 on the control channel, to utilize the selected channel for this call.
This CSP process minimi7Ps intrasystem and ilLltlDyDLtlll interference by selecting the best available channel at the moment every call is initiated. Other 20 mPl h~nicmq, such as continual ,n. ~ of the C/l ratio by both base station 32 and subscriber unit 36, are utilized by the P('S system to insure high quality nmmnni~AtinnS throughout the duration of the call.
Using the foregoing embodiments, methods and processes, the FAST system 30 allows PCS systems to maximize system capacity and minimize interference, thereby 25 maximizing efficient use of scarce radio spectrum, by making channel ARsignmPntci subject to n~",i~ , r. .tl.ct between iUlttlDybltlll and ill~ yDltlll users. It will be clear to those in the art that many and varied mn~iifi~ til-ns can be made to the preferred embodiment shown and described such as n~,..il,ltlftltl.ce based systems adapted to other network architectures, multiple access schemes, and other known advances in 30 PCS technology. All such variations and modifications are intended to be within the scope of the appended claims.

~ ~ ~ 1 937~

Appendix A
COMMAND AND RESPONSE FORMATS
COMMAND ~ ESC IPTION
Attention Place microc m trol - r in active state Reset Reboot llLi~ unl ller Measure Data Command ~ u-u ~huller to perform described in Band Table Terminate Scan Terminate Execution of the Current M- sure ~ata C mmand '~ab e Clea ClP~r ~ ntrie_ 'n Band T ble ''ab ~ App~- - a e try t o andTab tu ' 'ab Rerr ~, Entry ~ ~v an en s5 from Ba I Table ~ a. ~ ab i~ Get s Entry e first entry in Band Tavle e aL ' 'ab e Get ~PX. Entry e_-l entry in Band Table i Ill~cdi.l~ely following the last entry read Upload Data Transfer measured data from volatile memory to calling computer Upload Log Upload the Mi~lu~v~.llv~ Command Lo ~
Vownload Re~lace EEPROM microcode with new Set Clock ~ u~u~Ll~Jller real-time clock Get Clock ~- real-vme clock value Run Diagnostics e '~rm llli~lUWrl~ receiver and ~ ~d~u~ dluller self-test Get Hardware C~ Report RMU umit IV, microcode version, number of RF inputs Get Operational (' . t;~ ~li,., Rep base shvion ID, RMU telephone numoer, primary CUC telephone number, back-up CUC telephone number Set Operavional fnnfi~lr-~irm iet base station ID, RMU telephone number, primars~ CUC telephone number, back-up CUC telephone number Get Operational Status Report .u.l-~L:liul- time of last data , , current ~- ~, t ' status, available volatile memory 47 ~ 9~741 ~Ippe~d; ~ 3 Sample 25 KH~ Raw Data BAC08r 18 . -~
18 ,. _ 18 , ,.~".
C. - .

_ -~
.

' _ ' ., .

-' ~ :: ~ :::

:: ::~:
~ ~ . ,, WO 96~34~01 ~- ~ i 9 3 7 4 i X
Sample 200 KHz Processed Data ~ACQ3 18 -' 5 .
5 . -~
5 , : -18 _ , 8_ ~ : - -8 .
'8 ~ -~85 8~
8 , _ _ 8 , , -8 , _.
.
185~ , _ ' S, 5 . -~ _ S~. -1- .
' S~
~85 -' 5. -1 5. :_.
5. : .
5. : .' 185 - .7 ' 56. -' S6.~. -' 56. - .~
5G. -' .~
185 -' .
7. -_.
,_ _ 7~,_ 7. - 22.
7~ - 22.
185 ~, 85 .
85 ,_ 85 . -' .' 85 . - . ' 185 - .
1859, 1859.~ -1 . ~-WO 96134501 r~
49 2 ~ 9 3 7 ~end i ~ ~
Sample 5 and 10 MHz Processed Data BAC03[

~ i~
, _ ..

1 .97 WO g6/3~5UI I ~
~ ~ 9 3 7 4 1 APPENDIX E
PCS Frequency pairs fro~ the 1850-1990 MHz band utilizing- 200 lcHz RF ç,hannels 8un cs7x runc F ~ e ~ ~
IA ~,l Al~n.l ~ ~' A ~:
~A~ =A ~n~
A'~ _A~
~A~C'~A~ A'~-~A'~.
~A.~ A'~ 5A'~ ~q A ~. A'~: ~A~ A~W.
A r J A n~.~ FA'~ a ~ A ~w a A~ A ~- '~AI~ JA'W5 ~A~ A'~. ~A~ A'~.-A'~'.~ ~A'~A'~.
~ A~ ~-A'~1 ~ A1~ ~ A'W~.
'~A~ ~ ~A~
.A~ ~A~ ~A'~.
~A~ .n~,~ ~.-~A'~.
~A'~.A'~ ~A~ ~A'~
~A~ A'~. ~A'~.-,~A~:
A~ A~ A~W
~IA ~ A ~ ~A'~ JA ~.
~A~ A~ ~A~ A~.
~A~ ~A'~ n ~ A~
A~ *~. ~ A'~.~A~.
~A'~ ~A ~3 ~A~ - 5 A'~_ ~A~ A'~. ~
~A'~-~A'~.- ~A~ A~,' 5A'~ ~A'W.I ~Al~ ~A'~.
A'~'~' ~A'~ ~A~
A'~ ~~ A
~ A ~ n ,~ ~ A ' a A ~ ~ a A ~ a A ~ ~n ;~ ~ A ~ u .
l A ~ o~ - A ~-A ~ Y~l;! A ' ~3fi.~ ._ A ~ ; A ~4 .~
L A ~ 3 A r~, ~ ~ c A ~c, - A ~ A ~ A
~A'~9~A'~9 ~ A l~q ~ A
:~ A n ,.-. ~ A ' 9:1: ~ A l r~. 1~ A ~ Irr ' A ~ i- '~ '; A ' ~ A ~ r A
--~ A ' ~ '_. ~ A ~ *1 A ~ ~_ ~ A ' Iq A ~ I~'.J all A ~ ~. ' ~ A ~ c~ A
~u A ~: ~9 ~ n A
. ~ A . ~. ~ A ~uL ~ A ~ ~ ~ A ba w9 ~ A r~,l G~'~ ~ ~,~
~' A ~ r c ~o A ' ~. ~n A ' ~ A ~ 9l 9:
~ A c~.~ ~ql r A ~ ~ 9:
A ~ ~ A '~.~ ~ A ~q. ~ A ~q.
9 A ~ ~J w A ~ w A ~ r~,~
w A 1~ liO A ~ 117 A ~~ 1'11 A .~9 ~ W096/34501 PC'r/US9610~778 ' ' '- 51 2 ~ q37~ 1 ~JT~ IlSb~ ~JT~ UT~ 3Tr K ~C A ~r 1-~ A . 1 _ ~ ~ Ur ,_~'L ~ ~ L ~cr l rir AA ~ r~
r .
A ~ r ~ r .
r~ A ~ A
u~ .~ A ' .
-~ . A ~ A ~ J
~ A ~ ~ , ~, r.~~ r~
A ~_ ' A ' ~ . ~ ~ ~ ~
' A ~ rJ '~ A r A r~ I ' rl_ ' ~ A ~ A ~ _ R ~ , A ~ ~ r~ n ~.
A ~ . ~ A ~ ~ ~- ' " ~
'~ ~. ' A ' ~ ~ '~L,~ ~ ~ r.. _ r,~
A ' ~ ' I A ' '' . .
'~. A ~ ~ r . ..
A ~ ~ A ' ' ~ ' ~ r r~3 r lr_ ' I' rr-, z J a ~ D ' r.~ ,~ ' I ' r~, I
r~. ~ r~.
r~ ~ ~. I r._, r~ ~ ~
", , r ~ . ~. r~
8 - I J ! ~ J r.~ J r, r .~
., ,. ,., ~ r~ 9.al ~.
r~. r~ ~ ac. rJ.
~~ 1 r~a ~J ~ ~ 71 ~~r . ; .~"~ , ~ ~, ~. . ~, .~ r-r~ ,_ ~. r ~ r~
- 7 . I ~ ~ ~ ~. r~ ' ~ .
7 ~ , _ 17, 7 ~ ~ . A. ~ J , Z2 7. ~ Z ~ ,r . T "~r Z2~ ~ 7 i 2J
2~ r- .2~ r-, 7. ~ 1~. . 2- ~. 2~ ~
r--~ 25 ~J 7~ ~ ir.~ 25 ~ 25 . ~

Wo 96/34501 ~ 7 ~ l ., .. ~. ~, PPENDIX F
PCS Freque ~cy pai~s from the lB50-1990 M~z ba:~d utilizi~g 1.25 ~z RF rh~nne~lq 125 MHk ~F channel bandH~th 80 MHk Ttansm~ - Recslve ~ OI~ -SU Tx BS Tx 1 A 185D.625 ~ A 183D.625 2 A 1851.875 .2 A 1831.875 3 A 1853.125 3 A 1833.~25 4 A 18S4.37~ ~ A 1834~75 5 A 1855.625 ~ A 1835.625 6 A 1856~375 6 A 1835.875 7 A 1858.125 7 A ~838.125 Q A 1859.37~ 8 A 1839.375 9 A 1860.625 9 A 1840.6~5 10 A 1861.875 10 A 1841.875 11 A 1863.125 1~ A 1843.125 12 A 1864.375 ~2 A 1944.375 -3 A 18~5.625 73 A 1945.625 14 A 1866.875 14 A~ 1846.876 15 A 186S.125 15 A 1848.125 16 A 1869.375 16 A 184g.375 17 A 187D.625 17 A 1850.625 18 A 1871.87~ 18 A 1951.875 19 A 1873.125 18 A 1853.125 20 A 1S74.37~ 20 A 1854.375 1 B 1875.625 1 B 1855.625 2 B 1876.875 2 B ~85S.875 3 B 1878.125 3 B 1858.125 4 B 1879.375 4 B 1g59.375 5 B 1880.625 ~ ~ 18S0.625 6 B 1881.875 6 1851.875 7 B 1883.125 7 19B3.125 8 B 1B84~375 8 ' 19B4.375 9 B 1885.625 9 1965.625 10 B 1886.87~ 10 ~ 1866.875 11 B 1888.125 11 1968.125 12 B t889.375 ~2 8 1869.375 13 B 1890.625 ~3 ~ 1870.625 14 ~ 1891.875 14 ~ 1871.875 15 B 1893.125 1~ 1873.125 16 B 1894.375 ~6 ~ 1874.375 17 B 1895.E25 17 igr5.625 18 B 1896.875 18 B 1876.875 19 B 189Q.125 19 B_ 1978.125 20 B 1899.375 20 B_ 1 878.37 ~O96134~01 P~
r,~
~ 19374l ~PPENDIX ~
~rlvate Operational Pixed ~Microwave Service (POFS) Channels Se~bon ~4 65 of FCC Rules Summary 3 10 MHzpairedrhanr~ls Frequency ~Mltz 1855 1~35 118~'iS
2~860 1865 18~5 31865 1875 1955 ~1875 6~880 ~885 ~865 ~~885 8~890 1895 ~875 ~1895 101~D0 18D5 1885 ~118DS
~21815 10 MHz unpairet c!lannels '-----~3~25 1915 ___ ~418 5 lg25 ~51~40 ~6~45 ~850 MHz paired channels 1818~
~8~860 1860 194D 20~865 2~~570 1870 1953 22 1~75 23 ~980 1880 ~960 24 ~98i 1890 ~S70 1900 ~980 W096/345~1 ~
54 2~9374~
, ~ .
AppENDIx H
PCS Database Supporting the CUC

Rxord ~umbu: I
Licensee: Licensee ~
Contact :13arelay Jones ~tdr ss: 102S C ~ ' ' ~, NW Suitc 904 . W2shinton, D C 24036 Phone: 202~ 0005 Site: Smith O*lce Bu~din~
~230 ISIh S~e~ rn~' ~ D
I~titude: 38 S4 16 L~rn,~itud~: 77 02 07 Grwnd EleYation (h ~MSL): 6S
S~or. 1 Transmi~ Antenna: Ant~na Cornpany SS65 Gain (dBi): 6 S dB
o~i~nt~ n (degrces True~
Antenna Radiation Centu ~ft AGL): 120 Tran~mittAr POWU Output (dBm): 375 T~ Line Loss (dB):
Ghannd Group: 2B
Channd Numbers: 5, 14,23, 32, 41, S0, S9 RcceiYe Antenna 1: dup]c~ed with transmit antenna R~eive An~enna 2 : Antsnna Company SS65 Gain (dBi~: 6S dB
, ~'~r-~t~ (de~r~s Tr,u~
~n~enna Radiadon Center (ft AGL): 120 T, A I~ I Liné Loss (dB): 4 Sdected RestiYe Thresho!d (dBs~ 96 Lxpected Undesired POFS Si~nal Stren~ths (dBm):
W~tX818:
WXX819:
W~818:
W~t810:
~ 21:
~YY~Y926:
CW Measur~ POFS Si~nr~ Stren~s tdBm):
W~818.:
W7~819:
W~818:
W~810:
~YY~
26:

W0 ~1~/3451~1 r~ u.,, ',~
552~9~741 F~r ca~h Smith Of fice Building g;it point Row:
Column:
Iatitut~:
Lon,gitutc:
Clitical:
ted Desired Signa! Strcn~ (tBsn) -Expeacd Undcsir d PCS Si~ rDl Slrcn,~ (dBn~:Chcster B~ti~:
S=l:
S=2:
Sector 3:
Jcff Dms:
E~pect~d Undesired POFS Signal S~ngths (tBm):
W~818:
W~819:
W~K818:
W~810:
WYYY927:
WYYY926:
TMU CUy Mcasurct PCS Signal StK~g~s (dBm):
Ch~ster Buildu~:
Sc~or 1:
S=2:
Scctor 3:
J~ff DaYis:
~MU CUV Measurcd POFS Si~nal S~ths (tBsn):
W~818:
WX~t819:
WXX818:
WXX810:
wYY~Y~l:
WYYY92~:

W0 96134501 I ~ JI~
I '' 56 Record Number: 2 Iicensce: liccnsec ~
Contact: 13arclay Jones ~ddress: 1025 C ' ~ Ave., NW Suite 904 ~' ' ' ~ , DC 20~36 Phone: 202-296~COS
Si~e: Chester LuDdin~
320S WiSCO~IS;II ~e, NW
~Y~h~ " DC
Latitude: 38 S6 01 IDngitude: 77 04 21 Ground Elevalion (h A? SSL): 3?~
Sect~r: I
T;ans;nit J4ntenn2: Accuratc Ant~ 342 Gain ~dBi~: 7 dB
Orir~ (degrees True): ~S
Antenna Radiation Ce;lter (h AGLI: 120 Transmitter Power Output ~dBm): 3S S
T,~ Line Loss (dB): 2 S
Channel Group: IA
Charmel Numbers: 1, 10, 19, 28, 37, 46 ,Receive Antenna 1: duplexed with transmit u~tenna Re,~eiw Antenna 2: Accurate Antamt 342 Gain (dBi): 7 dB
Or r-~Ation (degrees Truc): 16S
Antenna Radiation Center (h AGL): 120 TIA~ 11 Line Loss (dB): 2 S
Sdected Receive'lhreshold (dBm): -Y6 Expected Undesired POFS Signal S~en~&s (dBm):
W~818:
W~81g:
W~818:
W~t810:
~YYY~Y~l:
Wn~YY26:
CUV Measured POFS Signal Streng~rs (dBm):
~818:
W~81g:
W~C8~8:
W~810:
~YYYY927:
WYYY920:

WO 9G134S01 . ~
57~ i 9 3 7 4 1 Secto~: 2 Tsansrnit ~ntenna: ~ecuRte ~ntenna 34 Gain (dBi): 7 dB
;n~ (degrces Truc): 16S
~n~a Radiation Center (ft ~GL): 120 ~ower Outpu~ (dBm): 3~ S
~ ~ ~ line Loss (dB): 2 S
Chnnd:Group: IB
Channd Numbers: ~, ~3, 22, 31, ~ 9, Sg, 6?, 76, 85, 9 Receive ~nteMa 1: duple~ed with transmit Mtenna Recei~ ntenna 2: ~ccurate ~ntenna 342 Gain (dBi): 7 dB
(dc~rees True): 10 ~ntcnna Radiation Ccnt~ ~ft AGL): 120 T~ s ~: >,~ l ine Loss (dB): 2.5 Sdected Receivc Threshold (dBm): -96 E~pected Undcsired POFS Signfl Strengths (dBrn):
W~818:
W~819:
~'XX818:
W~810:
~r ~Y~21:
WYW926:
CW ~casurcd POFS Signal Stren~ths (dBm):
W7~818:
W~81g:
W~818:
W~810:
WYYY92?:
~'YYY926:

WO~6345~11 r~ "~
1 9374 ~ --s~

S~or: 3 ~ransmit Ant~nna ~ urate ~ntcnna 34 Gah (dBi): 7 dB
(d~grees True): 285 ~nt~nna Radiation Center (f~ ~GL): 120 lhnsmitter PO ver ~ttput (d3m): 355 T ~ ~ line Loss ~dB): Z~
Ch nnd Group: lC
Channel Numhers: 7, 16, 25, 3 Receive Antennt 1: duplexd with bansmit ant~
Rc~ive ~ntenna 2: Accltntc ~ntaula 342 Gain (dBi): 7 dB
a~ n (degrees TNe): 285 ~nteMa Radiation C~nter ~ft ~GL): 120 T.~ Lin~ Loss ~dB): 25 Select~d Rec~ive 1 hreshold (dBm): ~6 Expccted Undesircd POFS Signal S~engths (dBm):
WXX818:
W~gl9:
W~818:
W~810:
WYYY92?:
WYYY926:
CW Measur~ POFS Sign21 St~ngths (dBm):
WXX8~8:
~XX81g:
WXX818:
WXX810:
w y Y~
WYYY926:

WO 96134SOI . I ~
592 1 9 3 7 ,~ j ~or each Chesler Building gnd point Row:
COIU;M:
latitude:
Longitude:
Csiti~:
E.spected Desiret Signal Sueng~ lm):
Sector l:
ScctDr 2:
Seaor 3:
E~pe~d Undesired PCS Signal S~r~s (tBm):
Srnith Of ficc Builting:
Jeff Davis:
~xpect~t Undesiret POFS si~nal S~cn~~s (dBm):
W~818:
W~819:
WX~t818:
WXX810:
WYYY927:
U YW926:
TMU CW Mcasurcd PCS Signal S~n~~s (tBm~:
Smith Office Builtin~:
leff Da~
TMU CW Mezsu~et POFS Signal Su~ngths (dBm):
U'XX818:
WXX819:
U'XX818:
~810:
WYYY92~:
WYYY926:

WO96~3.~501 r~,l,4,,,~. 111~

. ~ . ..

APPENDIX I
POFS Data~ase Supporting the Cl1C

Re~ord Number: 1 Call Sign: ~818 nsee: C:ll'Y POWER COMP~Y
C4nec~: Pred J0hDSOn Address: 234 E~ST ~ STREET
FAIR}~ A 22041 Phone: 703-8i4-sss5 site: S~YLINE ~W~
S2~3 1~ R~ 7 P~:E
~:~L15 CI~URCH, Y~
Latitudc: 38 SO 42 Longitud~: 77 722 Ground Flevation ~h J.MSL): 256 Transmit Fre~uenc3 (M~) :18SS
Re eive Frequency ~ffIz) :193S
Call Sign of Recd~e S~atiDn: WXX819 Transminer/Receisrer: GT~ ~E~URT
Modd . 79Fl-01 Mo~nl~tirm ~D210g l'ransmitter Pow~r Output (dBm): Yi I~Lnsenna: ~DREW CORPOR~TION
Model: CiPlOF-18 Gain (dBi): 33.1 I )n~nS~t;nn (d~gr~s Tru~): 207.9~5 ~nt~nna Radi2tion C~nter th M:il ): m T, ~ ., line 15)5s (db): 6 Path Dis~nce tmileS): 7.808 ~xpccted PCS B~ StadOD Signal Streng~s tdBm):
Chesttr Bu~g:
Smi~ Office BuildD~:
~eff DaYis: - 89.1 WO 96/34501 PCT/US96/0577Z~
61 ~ f 93 74 ~

Rc ord Numbcr: 2 Call Sign: W~819 Liccnsec: CITY POWFR COb5PANY
Oontact: Fred Johnson ~ddress: 234 E~ST M~ STREEI
FA~RF~X, Vl~ 220:1 Phonc: 703-8~4 SSSS
Sitc: SPRlN~;FlEL~ OFFIOE PARR
1023 SPRING I~
~r~,~D, V~
Iatitudc: 38 ~4 42 Longitudc: n 1126 Ground Ele~ration (ft ~MSL): m Transrnit Frequcstcy (~ fflz): 1935 Rc ei~e Frcquenq (Mlgz): 1855 Call Sign of Reccivc Sta~on: ~818 Transmitter: C~lE Ll~URT
Modcl: 7~FI-Ol ?~n~ inn ~ og ~ransrnitter Power Output (dBJ;l): 2S
~ntcnna: ANDREW CORPO~nON
MDdel: GPIOF-18 Gain (dBi): 33.1 Ori!nt~in~ ~degrees T~uc): 27.922 ~ntenna Radiation Centcr (ft ~GL): 164 T,~ , Line Loss (db): 2 Pa~h Dissance (miies): 7.808 E~pectcd PCS Worst Case G:id Point Signal StTtngths (dBm):
Chester Buildtn~:
Stnith Off~x Bulldin~:
Jcff Da~s: -102.6 Grid Poin~ Row: 3 Grid Point Column:

WO 96/34501 ~
6Z ~- ~ q374 ~ _ Rccord Number: 3 Call Si~n: W~818 Lica~: UTY POWER COMP~Y
~onsact: Frcd JohDson Adtrcss: 234 E~ ~A~ a FAIRF,~X, V~ 22~141 Pho~e ~ 824-SSSS
Sitc: SKYL~ TO~ER
~203 ~
FALI S CHT.JRCEI, VJ.
Latitudc: 38 S0 42 Longisudc: 77 722 GrouDd Elc~asion (fs Ab~SI,): 256 Transmis Frcquency (1~): 1905.
Rcceivc Frcqucncy (1~z): 1g8S
Call Sign of RccciYc Ssatiorl: WXX810 ~ransmister: GlE LEI~
Modd: 79FI-01 2~7- ' ~ : ~naiog T~ansmit~cr Power Outpu~ (tBm~: 16 ~n~nna: A~EW coRpoR~n ModcJ: GP8F 18 Gain (dBi): 31.2 t')n~nt~ n (degrecsTruc): 93.704 Amenna Radiasion Center th ~GL): m T!,... ~. ,..~ or. Lin~ Loss (db): 11 Path Distancc ( niles): 2.6S8 E~pect~d PCS Bas~ Susion Signrl Srrcng~s (dBm):
ReoeiYc Frcqucncy nDt ~n Lixnsec ~ aushorizod hnts.

WO 96134501 P., I' s ~
63~ l 9 3 7 4 ~

Record Number: 4 Call Sign: W~810 Liccnsec: CllY POWER COMPAI~Y
Contact: Fred Johs~son ~dtrcss: 234 E~ST M~
P~UR.F~X, V~ 4 Phone: '~03~824 5SSS
Si~: C:lTY POW3~R BWIDING
4S13 GLEBERO~D
A~EXANDRI~, VA
Latitude: 38 S0 33 Longitude: ~7 42S
Ground Elevation (h ~MSL~
T3znsmit Frcquency ~IHz) :1985 Receivc Frcquency ~5Hz) :1905 Call Sign of Recehrc Station: W~818 Transmitter :1~ URT
Modd: 79F1-01 dnl~tinn ~.210g TnnslT;itter Power Ousput (dBm): 16 Antenna: A~DREW CORPOR~TION
Model: GP8F-18 Gain (dBi): 31.2 Ol~n~tinn (degrecs ~suc): m.73s Amenna Radiation Ccn es (f~
EffectiYe Radiascd Power (dBm): 16.0 T.~ Line Loss (d~): 2 Path Distance (miles): 2.6S8 Espected PCS B~sc Su~on Signal Strengths (dBm):
RecciYc Frequency nos ~n liccnscc ~ at~thorized bands.

W0 9~./34.SOI r~ J, S.'l 1 1~
3 7 4 f Record Number: 5 Call Sign: W~Y~Y)~
Li$ensee: PUBLISHING COMP~ NC
Contaa: 1~ Wise .d~.: SS6 STJ~,IE 1~..
W/~ N,DC 20Q36 Pbo~e: ~202-''96-7m' Site: PCI W~k~-~2240 8RO~DBIRC:R DRI~
SILVER SPRING, MD
Latitude: 39 3 26 Longitude: '76 S7 49 Ground Lleva~on (ft ~MSL): 3~3 Tr2nsmit Frequency (MHs) :1960 Receive~Frequency ~z) :1880 Call Sign of Receive Statiolt: wm~6 ~r. ~ ~ F~ ON ~ ~:~'TC CO
?~odd: ~7320-01 ~ on: Digit21 T~smitLer Power Outpu~ (dBm): 30 ~n~enna: ~NDREW' CORPCERA~ON
Modd: GP8F~18A
Gain (dBi): 31.2 ~'~n~t'tl'l t (tegrees ~uc): 206.914 ~,n~enna Radiation Center ~ft ~ GL): 146 Effec~Ye Radia~ Power (dBm): 30.0 T~ " lineLoss (db): 1 Path Dislanx (miles): 1~621 E~pected PCS Worst C rse Grid Point Sign21 Str~~g~s (dBm):
Ches~er BuDding:
Smith Off~ceBui3ting:
Ieff D~vis:

Wo 96134501 PCT/US96/05778 ~ 1 65 ~3741 Record Number: 6 Call Sign: WYYY926 Liccnsee: PVBL~SHING COMP~NY lNC.
Contact ~ y Wisc Atdrcss: SS66 SrATE AVENOE N~
W~N~ N DC 20036 Phone: 202 296-~Site: PCI OFFlCE BIJII~D~G
IODO ~LSON BOULEVJ~RD
J;~ON, Vl~, Latitude: 38 S3 39 Longitudc: 77 4 11 Grount Elevation (h M~SL): 67 Transmit Frcquency ~): 1880 Receive~Frequcncy ~z) :1960 Call Sign of ReccivcSta~on: ~r~Y
T7. mitr~ F~RINo~F~F~l~co Modd: FE-7920-01 ~n~ n Digital ~ranssni~ Powcr Ou~put (dBm): 30 Antcnna: ~DREW CORPORAnON
Modd: GP8F-18A
Gatn (Bi): 31.2 Qr~n~t~ltinr~ ~degrees Truc): 26.847 ~ntenna Radia ion Center (ft AGL): 319 Effectivc Radiated Powct (dBm): 30.0 T- ~ ~ Line Loss Cdb): 5 Path Distancc ~ es): 12.621 E~tpected PCS Bzse Stztion Signal Streng~s (dBm):
Chester Buildhg:
Smith Offlce Build~:
Jcff Da~?is:

4, ; 2 1 9 3 7 4 1 --APPENDIX ~r PCS Database Entry for the ~Jeff Davis" Site Record Number: 3 Lice4tsee: Licensee A
CoD~ct: Barcl1y 1Ones ~ddress: 1025 Connectiwt ~ve., I~W Suite 904 W~hiDton, DC 20036 ~hDne: ~02 296~ 5 Site:Je~
1~ 01effcrsoD ~ieh~y ~ r in~on, V~
l~dtuae: 38 5i 49 Lon~ltude: ?7 03 03 Ground eva~on (n ~!SL): 6S
Se~r. ~
Transmit ~ntenna: Ante~u Comp~ny SS65 G~m (dBi): 6 S tB
Oriulta~on (degr~es True): o Antenm Ratiation Cents (ft At;L): 130 ~ransmltter Power OuSput (dBm): 3? S
T ' ~ Linc Loss (dB): 4 Cbannd Group :.1~ -Ch~nd Num~ S5, 44, ?3, 82, 91,100, 10g, 118 Chnnd Group :1B
Chnnd Numbe~ :103,112,121 Clunnd G~p: lC
Channd Numbers: 61, ?0, ?9, 88, 97, 106, 11S, 124 Recelvc ~n:um1 1: duple~ed ~i~h s~nsmit ~enna ReceiYe Ant~ina 2: ~ntuu~- Comp-ny SS65 Gnin IdBi): 65 ~dB
Orien ation (de~r~es True): . ~
Anten~a R~diation Center (h ~SiL): 130 T ~ ~ Iine Loss (dB): 4 Sele~d Re~elYe Th~d ldBm): -96 E~pectet Undes rd POFS Sign l Strcn~ ths (tBm):
WXX ':
W~r- ' . ':
~ 102 WX~; 1:
~YYY927:
WYYY920:
CUV Me2sur~t POFS Signal Stren~s (dBm):
WXX'~g:
w~: ~ls:
W~ '1~:
W70C '10:
WYYY92~:
~YYYg26:

r~ "~
~ WO 96/34~01 , ~ 3 7 4 1 .. 67 ~n ~ample of onc JCf~ Da~s l nd poiDt:
Row:S
- Column: 6 La~tude: 38 52 34 Longiludc: 77 03 ~3 C*itical: Ycs E~p~d De~ird Signal Strcng~ (dBm): ~9~
E~pectcd Vndesircd PCS Sign~ Str0g~ (~Bm):
Smith Of fice Bu~tins:
Ucstcr Buil~;ng:
Se~ 1:
Secto~ 2: ~94.3 Sa~ 3:
E~peaed Undtsired POFS Signal S~ng~ tdBm~:
WB818:
W~glg :-104.3 W~OC818:
. W~810:
wY~r927:
WYYY926:
~MU CUV Meacuret PCS Signal Stn~gths (tBm):
Sn~th Of ficc Building:
ChesLer Building:
Seaor 1:
S~ctor 2:
Scaor 3:
IMU CUV Mcacurcd POFS Signa~ Sxxr~gth (tBu):
~818:
W~t819 :-98.1 WXXB18:
WX~CB10:
WIsl927:
w~Y~926:

WO 96/34501 1 ~~
'. i 5. 68 2 ~ q ~ 7 ~ ~
~PPEI~DIX K
Calculations Utilized in the ~eterminatiOn o~ Total Inter~ering Power at WXX818 dBm mW
Allowed PoweratY~ B18 ~ --7g.8 1.0E-08 C ' ~'ltnd Power at WXX818 from Jolf Davis Opora~on hn bands d~m mW
1830--1840 --8~.1 12E--08 lU0-1842 --85.1 3.1E-10 - 1942-194~ --104.1 3.~E-11 Nurr~r of Jeff Da~is To~l l~
Chanr~ls in bands Powor atW~X818 1930-1940 ~940-1942 1942-1~45 dBm mW
O O O -86.2 ~E-O9 0 0 --84.4 3.6-~9 2 0 0 --8~1 ~.8---09 3 ~ O --8 2 6.1 --09 4 0 0 --81.4 7.3~--09 O O --88.7 8.6---09 6 o O --80.1 ~.8 --09 7 0 0 --7g.6 1.~ --08 6 1 0 -80.0 1.0E--08 6 2 0 --79.8 1.0E--D8 6 1 1 --7g.8 1.0--08 6 1 2 --78.9 1.0 --08 6 1 3 --7g.9 1.0_--08 6 1 4 --7~.9 ~.0 --08 6 1 ~ --79.9 1.0 --08 6 1 6 -7a8 1.0~-08 6 1 7 --78.8 1.0 --08 6 ~ 8 --78.8 ~.0~
6 1 0 --79.8 1.0~--D8 6 1 ~0 --~.8 ~.0 --08 6 1 11 --78.8 1.1 --08 6 1 ~2 --~g.8 ~.1---D8 6 ~ ~3 --7~7 ~.~ --08 .

WO96/34501 r~".
69 ~ I c374 pp~ndix L

~ssignment o~ Spec~ ~ic Ch~nnels to 2DD KH2 F~F eh~nn~l e~ndwl~th , Ch~nnel Gro~lps.
80 MH~ Tr~nsm~ - FU:~iv~ ~p~n90n, ~' Group 1A Grro 2A tbrL~ aA
~UTx l'Tx ~ ' T~ Tx ~ sTX
~ 1350 t 11 ~0 ~ ~ ~ r~nl ~ 4 ~0 1~51 9 ~ ~Iti ~ S
19 1553.7 1 t 13,7 ~ ~ ,9' IlLJ9 r ~ L~:
2B 10555 ~ l US5 ~ ~ ' JlG~7 ~Lt ' ~L~
J7 lt57~ ~ t'i~5 _t ' ~ 5 ~ r~' S
~6ltS9.1 19I9.1 ~7 ~ G~3' Ul~ ~t ' Li~ ' L~
55 ~tC0.9 1PI0.0 Ct ~ ,1 6~ a 6~~t62.7 1 ~ 5 ~ IS~J- 9 ~ U
7J ~~61.~ 1FJ~ 'S ~ D~.7 _~~ 45~ u ~2 ~66.3 19~6~ ~S ~6t~~ ~J~ U ~ ~~~
~ 68.1 1Ue.1 ~t2 ~ l6t~ 1Q~4l 9~ ;5 ~ ~L_~
~00186;.9 19~9.9 ln~ ' ~r70.~ t.t1 t2 'J'U_ ' ~s~a .
1D~le71.7 1951.7 110 1071.01~51.
118lB73.5 1953S 119 1873.71bt53.7 1291 '~.0 1 I _9 Group 1B Group 2B Grou~
SUTJ BST~ ~ 8UT~ OST~ ~ 8UTx -,'T~
~~BS0.7 1C30.7 5 1tS0.9lt30.9 6 18S1.1 ~ J
~3lBS2,5 1932.5.j~ 1CS2.71it32.i 1t 15r~2~t ~J9 22185~.3 ~934.3Z3 1~5~5~93~S 2~ 1~S~.7 311BS6.1 1936.1J2 1~561lt36.3 ~3 15165 ~13r3 ~O1857 9 193~.9 ~~ 11SSt.l ~9~ 2 1~Yit~
~71tS5 7 193;t.750 11SSt t ~93~t.9 6~ 1~t !;0.1 5~ 18~1.5 1941S 59 10Bl.7~U1.7 CO llSt: J9 U St 67lt63.319~13.3 6B 1063S tU3.5 i9 1~5~.7 11~-76lBSS.l1945.1 77 11l!iS3 lUS~ ~B 1~6$51!~;6i B51eS6.51946.9 t6 lt67.1 lU7.1 ~7 1116 3 l~3 94lB65.7194B.7 25 1116t.9lU8.9 95 1t61.1 1 t~1 1031670.5195DS 104 11i70.7195D.7 1 15 1-17~1.91951U9 tl2lB72.31952.3 113 11S 2S 1952S 11~ 1;S7 71115.7 121lB74.1195~.1 122 1~.:S 1itU3 12S 1117 JS1 IS S
Group 1 C Cro~p 2C Group ~C
SUTx BSTx ~ ~;UTx ISSTx ~ -U~lt t~T~
7llSS~.3193~.3 Lt Ul S11 t~S5 9 ~ ~5 .~~ t .t 1611153.11~3~.1 17 1~S:13 g~t3~ 11t 1 t i~3~ t _ iii 25ltS~.91~t3~.9 26 ~-i.l S~SS.l ~7 1 IS ~ a ~lLt56.7l!t3 .7 as ~155~19~i.9 1~ ~: t i 1 a ~15585 ~R3l.5 ~ ~ l4S.~ q9i3Lt.7 ~5 ~. i4i 1:. 9 62 115603 lW13 r3111éi~t3 1tUt~ ~ lLI~
61 ~62.1 lU-'.1 ~52lt5~21 lU2.1 13J ~a~
lS63.9 19~;.9 ~ 11il.1 19~.1 -2 1 1 7C lB65.7 19~i-7 ISO11565.9 tU59 151 ~5.1 l~
U 11167.5 19~ S Lt911567.7 19-17.7 qD ltei7.9 1 97 lB69.319~13 ~181t69S 1U9S 99 1 5~59.7 l U9.
106 lB71.11951.1 1~171t71.5 19513 lOB 1 S IS 1~tSl r;
llS 1B72.91952.9 11611571.1 ~953.1 117 115753 1953 ~2~ lt74.7195~.7 ~25~t7~i.9 t95.~.9 _ . . . _ _ _ _ . . , . , _ _ _ _ _, _ _ _ _ _ _ _ _ _

Claims

1. An autonomous remote measurement unit (400) in a communications system having a central controller (38), for autonomously measuring signal strengths in a communications environment with other communications transmissions, the remote measurement unit comprising:
a means (404) for accepting commands from the central controller (38);
a means (50), connected to the accepting means (404), for controlling the operation of the remote measurement unit (400), wherein the means for controlling (50) receives commands from the central controller (38), interprets the commands, and controls the remote measurement unit (400) based on the commands;
a means (432), operably connected to the controlling means (50), for receiving communications transmissions;
a means (408) for measuring, connected to the receiving means (432) and the controlling means (50), the signal strengths of any communications transmissions upon the command of the controlling means (50); and means (404) for storing the signal strengths of the communications transmissions.

2. An autonomous remote measurement unit (400) in a personal communications system having a plurality of base stations (32), subscriber units (36) and a central controller (38), for autonomously measuring signal strengths in a communications environment with other communications transmissions, the remote measurement unit (400) comprising:
a means for controlling (50) the operation of the remote measurement unit (400), wherein the means for controlling (50) receives commands from the central controller (38), interprets the commands, and controls the remote measurement unit (400) based on the commands;
a means (432), operably connected to the controlling means (50), for receiving communications transmissions from the base stations (32), the subscriber units (36) and the other communications transmissions;
a means (408), connected to the controlling means (50) and the receiving means (432), for measuring the signal strengths of communications transmissions from the base stations (32), the subscriber units (36) and the other communications systems upon the command of the controlling means (50);
means (404) for storing the signal strengths of communications transmissions; and means for storing (416) the stored signal strengths of the communications transmissions to a central controller (38) for verifying theoretical interference performance predictions with the measured signal strengths.

3. An autonomous remote signal strength measurement system in a personal communications system having a plurality of base stations (32), subscriber units (36) and a central controller (38), for autonomously measuring signal strengths in a communications environment with other communications transmissions, the remote measurement system comprising:
a remote measurement unit (400) located at a fixed site location, comprising:
a means (404) for accepting commands from the central controller (38);
a means (50), connected to the accepting means (404), for controlling the operation of the remote measurement unit (400) based on the commands from the central controller (38), wherein the means for controlling (50) receives commands from the central controller (38), interprets the commands, and controls the remote measurement unit (400) based on the commands;
a means (432), operably connected to the controlling means (50), for receiving communications transmissions from the base stations (32), the subscriber units (36) and the other communications transmissions;
a means (408), connected to the controlling (50) and the receiving means (432), for measuring the signal strengths of communications transmissions from the base stations (32), subscriber units (36) and other communications systems upon the command of the controlling means (50); and means for storing (404) the signal strengths of communications transmissions; and the central controller (38), in communications with the remote measurement unit (400), comprising:
means for receiving (428) the stored signal strengths of the communications transmissions; and means (448), connected to the receiving means, for verifying theoretical interference performance predictions with the measured signal strengths whereby the personnel communications system adapts to a changing RF environment and shares frequencies allocated to the other communications system within the same region through the provision of centralized control.

4. An autonomous mobile remote measurement unit (400) in a communications system for autonomously measuring signal strengths in a communications environment with other communications transmissions, the mobile remote measurement unit (400) comprising:
input means (440) for capturing position information at various locations;
a first means (436), connected to the input means (440), for storing the position information;
a means (50), connected to the input means (440), for controlling the operation of the mobile remote measurement unit, wherein the means for controlling receives commands from the central computer, interprets the commands, and controls the remote measurement unit based on the commands;

a means (432), operably connected to the controlling means (50), for receiving communications transmissions;
a means for measuring (408), connected to the receiving means (432) and the controlling means (50), the signal strengths of any communications transmissions at various positions and upon the command of the controlling means (50); and a second means (404) for storing the signal strengths of the communications transmissions.

5. An autonomous mobile remote measurement unit in a personal communications system having a plurality of base stations (32), subscriber units (36) and a central controller (38), for measuring signal strengths in a communications environment with other communications transmissions, the mobile communications unit comprising:
input means (440) for capturing position information at various grid point locations located around the base station location (32);
a means (50), connected to the input means, for controlling the operation of the mobile remote measurement unit;
a means for receiving (432) communications transmissions from the base stations (32), the subscriber units (36) and the other communications transmissions;
a means for measuring (408), connected to the receiving means (432), the signal strengths of communications transmissions from the base stations (32), the subscriber units (36) and the other communications systems at different locations upon the command of the controller means (50); and means for storing (436) the signal strengths of communications transmissions so that the stored signal strengths of the communications transmissions can be used later by the central controller to verify theoretical interference performance predictions with the measured signal strengths, whereby the personal communications system shares frequencies allocated to the other communications system within the same region through the provision of centralized control.

6. An autonomous remote measurement unit (400) for controlling the measuring of communication transmission' signal strengths in a personal communications system based on the commands of a central computing device (38), the remote measuring unit (400) comprising:
a means (70, 432) for receiving communications transmission;
a means (408), electronically connected to the receiving means (70, 432), for measuring signal strengths of the communication transmissions;
a means (404), electronically connected to the measuring means (408), for accepting commands autonomously generated by the central computing device (38); and a means (50), electronically connected to the accepting means (404), for controlling the operation of the remote measurement unit (400), wherein the controlling means (50) receives commands from the central computing device (38), interprets the commands, and controls the remote measurement unit (400) based on the commands.

7. The remote measurement unit as described in claim 6, wherein the receiving means (70, 432) is a plurality of RF input sources, and the remote measurement unit (400) further comprises a switch (424), electronically connected to the measuring means (408), to enable one of the input sources (70, 432) upon the command; and wherein the controlling means (50) directs the switch (424) to enable one of the RF inputs.

8. The remote measurement unit (400) as described in claim 8, further comprising;
a noise source (456) electronically connected to the switch (424), and wherein the controlling means (50) directs the measuring means (408) to perform a noise self-calibration test upon the command.

9. The remote measurement unit (400) as described in claim 6, where the receiving means (70, 432) is at least one directional antenna.

10. The remote measurement unit (400) as described in claim 6, further comprising:

a means (404), electronically connected to the measuring means (408), for storing the measurement results in measured data files.

11. The remote measurement unit (400) as described in claim 11, further comprising:
a means (416), connected to the means for controlling, for uploading the measured data files.

12. A mobile remote measurement unit (400) for controlling the measuring of communication transmissions' signal strengths in a personal communications system based on commands from a central computing device (38), the remote measuring unit (400) comprising:
a means (70, 432) for receiving communications transmissions;
a means (408), electronically connected to the receiving means (70, 432), for measuring signal strengths of the communication transmissions, wherein the signal strengths are measured over a specified frequency range and time period;
a means (404), electronically connected to the measuring means (408), for accepting commands autonomously generated by the central computing device (38), wherein the commands specify the frequency range and time period to measure;
a positioning device (440) for acquiring position data;
a computer (436), electronically connected to the measuring means (408), the accepting means (436), and the positioning device (440), for controlling the operation of the remote measurement unit (400), wherein the controlling means (50) receives commands from the central computing device (38), interprets the commands, and controls the remote measurement unit (400) based on the commands, the computer (436) comprising:

a module (452) for controlling the measuring means;
a means (70), electronically connected to the controlling means (50), for reporting the measured data files and position data.

14. The mobile remote measurement unit (400) as described in claim 13, where the receiving means (70) for receiving uses an omnidirectional antenna.