WO2007115460A1

WO2007115460A1 - A method, an apparatus and a system for realizing the listener identification service

Info

Publication number: WO2007115460A1
Application number: PCT/CN2007/000175
Authority: WO
Inventors: Minjun Shen
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-04-12
Filing date: 2007-01-17
Publication date: 2007-10-18
Also published as: CN1984386A; CN1984386B

Abstract

A method for realizing the listener identification service, includes these steps: determine the service user list (RML) of the listener message which is required to be reported, in the current listener message reporting period (201); broadcast the group paging message which includes the service user identification in one or more than one RML in each group call cell (203); the service user in the group call cell reports the listener information according to the matching result of the user's own identification and the identification in the received paging message (204). A mobile switch center (MSC) and a listener identification service realizing system are also disclosed. With the application of the scheme in this invention, the listener identification service could be realized more flexibly and the speed of reporting the listener information increases.

Description

Method, device and system for implementing listener identification service

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method, apparatus and system for implementing a listener identification service. Background of the invention

Voice Group Call Service (VGCS) and Voice Broadcast Service (VBS) are multi-party voice communication methods in Global System for Mobile (GSM), breaking through the limitations of peer-to-peer communication. Sex, able to quickly establish a call. These two services can be collectively referred to as group call services.

The VGCS service includes two types of group call members, namely dispatchers and business users. The dispatcher can be a fixed-line user or a mobile user, and participate in the voice communication of the group call through the dedicated channel established for it. In the existing GSM 800M digital trunking system (GSM Trunk 800M, GT800) standard, the VGCS service can be unscheduled. A member or a maximum of five dispatchers; a service user refers to a mobile subscriber who subscribes to the VGCS service, and the number of mobile subscribers participates in the voice communication of the group call through the group call channel in the group call area.

The VGCS service only allows one business user and up to five dispatchers to speak at the same time, while other business users who are not in a speech state are called group callers. The group caller can press the Push To Talk (PTT) button on the mobile terminal to implement the operation of rushing the uplink traffic channel according to the principle of "first come, first served". The voice can be obtained to participate in the speech, and the other groups of listeners can continue to grab the uplink traffic channel only when the uplink traffic channel is idle. The dispatcher has its own dedicated channel and can participate in the speech at any time.

A specific group call communication is composed of a group ID (G-ID) and a group call area. A certainty. The G-ID and the group call area are collectively referred to as a group call reference, that is, the caller reference uniquely determines a group call communication. The G-ID identifies the function of the group, that is, which identity group call members participate; ― A mobile user can sign multiple G-IDs at the same time and set different priorities for them.

Figure 1 is a schematic diagram of a simple group call service system, including an Anchor Mobile Switch Center (A-MSC) 10 relay MS C (R-MSC) 102, each of which includes a Or a plurality of base station subsystems (BSSs), one or more group call cells under each BSS, and service users are distributed in the group call cells. The dispatching station 105 is connected to the A-MSC.

The A-MSC is responsible for the management of the call, establishing all connections, including the connection to the designated cell of the MSC, the associated R-MSC, and the dispatching station, and completing the voice distribution. The BSS is responsible for the distribution of downlink voices in the cell to which it belongs. The group call cell is the basic unit that constitutes the group call area, and the group call area refers to the range covered by the group call communication. A larger group call service system may include multiple R-MSCs, while a simpler group call service system may consist of only one A-MSC and its subordinate BSS and service users. When the group call service is performed, each group call cell has a group call service channel, and the service user who speaks works in the group transmission mode, and the call content is transmitted through the uplink service channel; all group listeners work in the group reception mode, The downlink traffic channel receives the call content.

VBS has similar business functions as VGCS. The main difference is that in VBS service, only the initiator of the broadcast has the right to speak, and the identity of the initiator can only be the dispatcher; other group call members, including ordinary users and non-initiators The dispatcher has no right to speak.

In the GSM specification, a group caller of a group call service works in a receiving mode, and receives information carried by a downlink traffic channel of a group call channel, and no uplink channel is connected to the network side. Therefore, in the process of the group call service, the network side cannot obtain the information of the group caller, and the network side cannot know whether the group caller participates in the group call/multicast and the process of participating in the group call/multicast. In order to obtain information about whether each group of listeners is online, it is necessary to establish an uplink channel for the group caller to communicate with the network, and the network determines the group call user participation group by receiving the information of the group caller on the uplink channel. In the case of a call, this is the listener identification service.

The existing listener identification service is implemented as follows:

The network side stores the serial numbers of all service users, and each business user stores its own serial number. The network side broadcasts a request for reporting the listener information on the group call channel of each group call cell, and the request includes a time point for reporting and a time slot required for each service user to report in sequence. The service user calculates the frame number that is reported by the user according to the received request and the serial number stored locally. The information of the listener on the time slot corresponding to the frame number can be reported through the group call channel or reported through a dedicated dedicated channel. The network side allocates the reporting time period according to the sum of the time slots required for all service users to report, and receives the listener information in the reporting time period. When the reporting time period ends, the request for reporting the listener information is broadcast again, and the above cycle is repeated in the next cycle. operating.

In the above-mentioned listener identification service, the listener information is reported in a predetermined fixed order, which causes the following disadvantages:

All group call cells must allocate the reporting period according to the sum of the time slots of each service user traversing once, and the reporting speed is slow. If some service users are already in a non-service state, such as shutdown, out of service area, or service users are deleted, the original reporting sequence must still be maintained, and the reported time slots are wasted. If you only care about the listener status of a particular business user, but according to the current listener identification service, you must query the status of all business users, so that the query efficiency is very low. Summary of the invention

In view of this, the embodiment of the present invention provides a method for implementing a listener identification service, which can perform listener information reporting more flexibly. The method comprises the following steps: Determine the list of business users who need to report the listener's message within 4艮 of the current listener information.

RML;

Broadcasting a group paging message including one or more service user identifiers in the RML in each group call cell;

The service user in the group call cell reports the listener information according to the matching result of the service user identifier and the service user identifier in the received group paging message.

The embodiment of the invention further provides a mobile switching center, including:

a list generating module, configured to generate an RMSL corresponding to the group of call cells according to the listener information of each group call cell received by the MSC;

a transceiver module, configured to receive group listener information of a service user of each group call cell, send the received listener information to the list generation module, and send the generated RML generated by the list generation module to each group call cell Base station subsystem BSS.

Furthermore, the embodiment of the present invention provides an implementation system for a listener identification service, including an MSC, a BSS, and a mobile terminal, where the MSC is configured to generate an MSRL corresponding to the group of call cells according to the listener information reported by each group call cell. And transmitting the RMSL to the BSS to which the group call cell belongs; the BSS is configured to broadcast a group paging message including the corresponding RMSL in each group call cell of the subordinate, and send the information reported by the mobile terminal to the MSC; The mobile terminal is configured to receive a group paging message, and perform the hearing of the listener information according to the indication of the group paging message.

It can be seen from the above technical solution that the group paging message arranges the service user list reported by the group caller information according to the current situation, and the service user performs the matching according to the service user identifier in the group paging message and the service user identifier stored in the group paging message. When the listener information is reported, there is no phenomenon that the service user is deleted and the time slot is deleted, and the paging can be divided into cells to further improve the reporting speed. BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic diagram of a prior art system for implementing a listener identification service;

2 is a flowchart of implementing a listener identification service according to an embodiment of the present invention;

FIG. 3 is a flowchart of performing service user identity registration according to Embodiment 2 of the present invention. Mode for carrying out the invention

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

The embodiment of the invention mainly includes the following steps:

Step A: In each period of the listener identification service, the network side selects one or more service users from all the service users that need to be queried, and the broadcast signaling sent includes the selected service user identifiers that are sequentially arranged. Information, the broadcast signaling is called a group paging (Group Paging) message;

Step B: The mobile terminal matches its own identification information with the service user identification information in the received signaling. If the matching is successful, the timing of the reporting is calculated according to the location of the identification information of the broadcast signaling. The information is reported at the calculated timing; if there is no match, no operation is performed; after the information reporting of all business users is completed, the listener identification service of the next cycle is continued.

The solution provided by the embodiment of the present invention is more efficient than the existing listener identification service, and the listener information reporting is more flexible. To reflect this feature, the embodiment of the present invention includes the group paging message in addition to the foregoing steps. The included listener identification can be adjusted according to each cell, and the following measures are taken:

1) If the network judges that the service user in the group is in a non-service state, for example, has been shut down, in other calls, not in the service area or roaming out of the group call area, the users in the group can be queried from all group call cells. Deleted in the identity; 2) Because the listener stays in a cell for much longer than the period reported by the listener, if listener A reports information in cell 1 in the previous cycle, then listener A is considered to be in cell 1, then the next cycle can be The identifier of the listener A is deleted from the listener identifier of the other cell to be queried; if it has been determined that the listener A is in the cell 1, and the information of the listener A is not received in the cell 1 in the current period, the listener A is considered to have After leaving cell 1, the identifier of listener A is added to the group paging message of all group calls in the next cycle;

3) For group callers who do not belong to the situation listed in Measure 1) but have not been able to report 4 艮 information, you can down _{1 to} query the frequency of the group of listeners, and reduce the number of group listeners to be queried until After the group listener reports the information, the frequency of the inquiry to the group of listeners is restored.

4) For the cell that determines that there is no group caller, the group page message is not sent.

The number of service users that need to be reported by each group call cell may be different from each other according to the above manner. Accordingly, the listener information of each group call cell is also clear.

Embodiment 1: The original listener information reporting sequence number is used as the service user identification information to implement the listener identification service.

For the sake of brevity, all the group call cells belong to the same MSC, that is, the A-MSC. The listener identification service flow in this embodiment is as shown in FIG. 2, and includes the following steps:

Step 201: The MSC determines a Required Member List (RMM) that needs to report the listener message in the i-th cycle. When i = l, that is, when it is executed for the first time, if the dispatcher does not specify a service user, the ML includes all service users of the group call service; when i≠l, it is determined according to the following rules:

1) In the last listener information reporting period, when the service user is judged to be in a non-service state, the service user is deleted from the RML, and the non-service status is any one of the following: shutdown; in other call services ; Not in the service area; Not in the group call area. 2) In the last listener information reporting period, the MSC determines that the service user is switched from the non-service state to the service state, and then the service user is added to the RML, and the transition from the non-service state to the service state includes: Power on; End other call services; Enter service area; Enter group call area.

3) If the service user does not belong to the case listed in rule 1), and the information is not reported in m consecutive cycles, the frequency of reporting the information of the service user is adjusted from the default per cycle to every n cycles, according to the adjustment. The frequency determines whether the current user information reporting period requires the information of the service user. If yes, the service user is added to the RML, otherwise it is not added; the m or n is a preset value; the frequency of reporting the information is adjusted. If the service user receives the report message of the service user in the previous cycle, the frequency of the information on the service user is restored to the default frequency, that is, the report is reported every period;

4) Business users in RML that are not in the above situation are left in RML by default. The method in which the MSC determines the state of the service user as described in rules 1) and 2) is prior art.

In any period, if the dispatcher specifies a service user that needs to report the status, the RML is only the designated service user, and is processed according to the above process; the dispatcher cancels the specified service user, and RML is reinitialized in a subsequent period. , that is, according to the case of i = l.

Step 202: Determine that the service user in the RML is a local user or a global user, and determine, according to this, that each cell needs to report a Subscribed Member Sub-List (RMSL); when i = l, all Business users are global users.

The local user is: in the last period, the service user of the group call cell in which the cell is located, that is, the group call cell receives the report message of the user. For example, in the last cycle, when the cell 1 receives the ^=艮 information on the service user A, the service user A is the local user of the cell 1. The global user is a service user who cannot determine the group call cell in which it is located in the previous period. For example, it has been determined that the service user A is the local user of the cell 1, but the cell 1 does not receive the information of the service user A in the previous cycle, and the service user A is the global user in the current cycle; When the listener information is on, all business users cannot determine the cell in which they are located, so all business users are global users.

The RMSL of the specific group call cell is determined as follows: The local user identifier of the group call cell in the RML and all global user identifiers are added to the RMSL of the group call cell. Here, it is necessary to emphasize that all global user identifiers and local user identifiers of the group of calling cells are included in the RMSL of the group of calling cells; and, in addition to the above-mentioned user identifiers, the RMSL has no other user identifiers. In other words, the content of the RMSL is the union of the set of all global user identities and the set of local user identities of the group of calling cells.

According to the above processing, if all the service users in the RML in this period are local users, and there is no local area user in the group call cell, the MSRL content of the group call cell without the local user is empty, and the RMSL content is empty. The paging cell does not need to broadcast a group paging message. If there is a global user in the RML, the MSRL of all the group calling cells must include at least a global user, and all group calling cells need a broadcast group paging message.

Step 203: Broadcast the paging group group paging message in each group call cell, where the group paging message includes the service user identifier in the RMSL of the group call cell. In this embodiment, the group paging message is broadcasted on a Fast Associated Control Channel (FACCH), and other broadcast channels may be used. The present invention does not use the channel of the broadcast group paging message. Any restrictions.

In order to reduce the number of group paging messages, each group of paging messages is required to pack as many user identifiers as possible. In this embodiment, the group paging message length is 23 bytes, and in addition to the first 3 bytes of the message header, there are 20 bytes, that is, 160 bits; and the number of normal service users does not exceed 100, as the service user identifier. The serial number can be 001 ~ 255; so you can use 1 The length of the byte indicates the identity of a service user, such that a group paging message can contain a sequence number of up to 20 service user identifiers. If a group paging message cannot carry all service user identifiers in the MSRL of the cell, it is divided into several group paging messages for broadcast. The order in which the service user identifiers in the group page message are arranged may be arbitrary.

Step 204: The service user in each group call cell performs the listener through the group call channel or the uplink pass of the other dedicated channel according to the matching result of the service user identifier and the received service group identifier in the group paging message. Information is reported. More specifically, the service user receives the group paging message, and matches the service user identifier carried in the received group paging message with the service user identifier stored in the group. If the matching is successful, the service carried in the group call message is The user identifier is consistent with the service user identifier stored by the user, and the time slot reported by the user is calculated according to the location of the matched service user identifier in the group paging message, and the listener information is reported in the calculated time slot; If the match is unsuccessful, no action is taken.

After all the service users have completed the reporting of the listener information, the process proceeds to the next cycle and steps 201 to 204 are repeated.

By applying the solution of the first embodiment, the following beneficial effects can be achieved:

According to the online situation of the current service user, the reporting sequence is arranged. When some service users are deleted, the reporting sequence is automatically adjusted, and no time slot is wasted. For service users who are known to be in a non-service state, such as shutdown, long-term dropped network, ongoing call, and roaming out of the group call area, the query status is not required, and the cell paging may be performed according to the location of the cell where the service user is located. , further improve the reporting speed. The processing is flexible. For a large group, it is only necessary to know the status of a few key users. As long as the number of users is specified by the dispatching station, only the users can report the information according to the process of this embodiment.

In the first embodiment, the service user identifier is a serial number stored in the SIM card, and the invention may also use part of the information in the International Mobile Subscriber Identity (IMSI) stored in the flash memory of the mobile terminal as the service. User ID, ie It is the solution of the second embodiment of the present invention.

The IMSI is a decimal 16-bit character string for identifying the identity of the mobile terminal. Each mobile terminal stores its own IMSI in the storage unit, and also stores the IMSL of the mobile terminal on the network side to ensure a group paging message. Carrying as many service user IDs as possible, you can select the last three digits of the IMSI as the service user ID. If more than one service user IMSI has the same three digits in the group, the same three IMSIs are taken one bit. That is, the last four digits of these service users IMSI are taken as the service user identifier; if the last four digits are still the same, the last five digits are taken and the like. In practical applications, the number of service users in a group is usually less than 100, and the IMSI is often continuous, so the last three bits can basically group most of the service users in the group, even if the last three bits are repeated, as long as these are repeated The logo becomes four digits to meet the needs, and the five digits are rare. If the service user ID is the last three digits of the IMSI, the service user identifier can be carried by at least 10 bits. If the last four digits of the IMSI are taken, the service user identifier can be carried by at least 14 bits.

Before using the group call service, for each service user participating in the group call, it is necessary to determine the character string composed of the last few digits of the IMSI of each service user as the service user identifier of the corresponding service user. The principle of determination is to Under the premise that there is no duplication of the business user IDs participating in this group call, the string to be taken should be as short as possible. The process of determining the service user identity is as shown in FIG. 3, and includes the following steps: Step 301: The MSC selects a service user IMSI that does not determine the service user identity, and determines the selected IMSI. Whether the string formed by the I bit is the same as the determined service user identifier, if the same is not found, step 302 is performed; if the same is found, step 303 is performed; if there is no service user with the unidentified identifier, the process is exited; For the preset value, in this embodiment, the setting is 1 = 3; when the first execution, there is no determined service user identifier, the judgment result is necessarily not found the same, then step 302 is performed;

Step 302: Use the selected I-bit of the IMSI as the service user identifier, and go to the step Step 301;

Step 303: The IMSI corresponding to the selected IMSI and the same service user identifier as the last I bit of the selected IMSI are used as objects to be compared;

Step 304: Determine whether the IMSI belonging to the object to be compared is the same as the J bits, and if not, go to step 305, otherwise: ΚΓ +1 and repeat step 304; when executed for the first time, J = 1+1;

Step 305: The post J bit of the IMSI in the object to be compared is used as the identifier of the corresponding service user, and the process proceeds to step 301.

The group call cell belongs to multiple MSCs. The implementation process is similar to the above process, and is easily deduced, so it will not be described again.

After the process of determining the service user identity of the group call is completed, the listener information report may be performed according to the same business process as the first embodiment. The format of the group page message is as shown in Table 1:

The total length of the group paging message is 23 bytes, so according to the manner defined in Table 1, if all user identifiers are 10 bits, one group paging message may contain 15 user identifiers; if all user identifiers are 14 bits a group paging message may contain 10 user identifiers; if part of the user identifier is 10 bits and part of the user identifier is 14 bits, then a group A page can contain 10 to 15 users.

According to the group paging message in the above format, in the process of the second embodiment, the service user identifier that is received by the service user in the group paging message is matched with the service user identifier stored by the service user as:

The mobile terminal of the service user compares the service user identifier carried in the received group paging message with the last digits of the IMSI of the UE, for example, the service user identifier of the 10-bit format in the group paging message is converted into decimal, and The last three digits of the IMSI are compared. The service user identifier of the 14-bit format in the group paging message is converted to decimal and compared with the last four digits of the IMSI. If the two are consistent, the matching is successful.

In the existing listener identification service, since the service user and the network side must store the sequence numbers required for the feedback of the listener information, the serial number of the service user is usually stored on the Subscriber Identification Module (SIM) card of the mobile terminal. It not only occupies the capacity of the SIM card, but also needs to modify the specification of the SIM card, and the compatibility is not good. If the user in the group changes, it is also necessary to update the serial number by modifying the SIM card, which is difficult to implement. The maintenance data is complicated, and the data of the SIM card and the network may be inconsistent, and the possibility of an abnormality increases.

In addition to the beneficial effects of the first embodiment, the second embodiment of the present invention can further achieve the following beneficial effects: no need to write the serial number in the SIM card group, no occupation of the SIM card capacity, better compatibility, and maintenance of the cartridge.

If the group call cell belongs to a different MSC, the A-MSC performs the related operations of the MSC in the foregoing process, and the other R-MSC performs the information forwarding operation between the A-MSC and the service user of the cell, that is, from the A-MSC. The group paging message is transparently transmitted to the service user of the cell, and the reported message of the service user of the cell is transparently transmitted to the A-MSC.

According to the implementation manner of the listener identification service according to the embodiment of the present invention, the number of service users that need to report the listener information may be different for each group call cell, and accordingly, the listener information reporting period of each group call cell is not the same. the same. Consider an extreme situation, if a group calls Including 101 service users, 100 of which are in cell A, and only one is in cell B, then a listener information reporting period of cell A should include the time required for the 100 service users to report the listener information, and the cell A listener information reporting period of B includes only the time required for the one service user to report the listener information. In other words, in this case, the frequency of the listener information reported by the cell B is 100 times that of the cell A. In fact, for the cell B, it is not necessary to report the listener information so frequently.

Therefore, the listener information reporting period of each group call cell can be further adjusted to avoid the situation that the listener information is reported too frequently. Here are two ways to adjust the listener information reporting period:

One adjustment method is to synchronize the listener information reporting period of each group call cell. The listener information reporting period of the cell with the largest number of service users in the RMSL is used as the listener information reporting period of the entire group call. For example, it is assumed that there are four cells A, B, C, and D in a group call service, and the number of service user identifiers in the RMSL of each cell is 10, 20, 30, and 40, respectively. On the basis of the ^ ^:艮 period, the above four group call cells synchronously send the group paging message, and the number of service users that the cell A needs to report the listener information is the least, so the listener information reporting period is completed first. After the completion, the next listener information reporting period is not immediately started, but enters the waiting state; then, the cell B and the cell C sequentially enter the waiting state, until the listener information of the cell D is completed, the four cells are simultaneously Send a group paging message to enter the next listener information reporting period. In this way, the listener information reporting period of all cells is adjusted to be synchronized, and both are equal to the listener information reporting period of the cell with the largest number of service users.

The second adjustment method is to set a delay of the listener information reporting period of the group call cell if the number of service users that need to report the listener information in the group call cell is less than a certain value. Still illustrated by the example of the above four cells. If the number of service users that need to report the listener information in the cell is less than 25, a delay of 0.2 seconds is set for each listener information reporting period of the cell; if the listener information is required to be reported in the cell Industry The number of service users is less than 15, and a delay of 0.3 seconds is set for each listener information reporting period of the cell. According to such a judgment condition, the listener information reporting period of the cell C and the cell D is unchanged, and the listener information reporting periods of the cell A and the cell B are respectively set with delays of 0.3 seconds and 0.2 seconds. The number of service users mentioned above and the specific value of the delay can be determined according to the actual situation.

The above is just a simple example of the method of adjusting the listener information reporting period, and it is not limited to the above-mentioned adjustment method of the listener information upper cycle.

The system structure of the embodiment of the present invention is substantially the same as that shown in FIG. 1, except that the MSC, the BSS, and the service terminal respectively need to add corresponding processing modules.

For A-MSC, the following modules need to be included:

The service user information storage module is configured to store information of all service users of the group call service, where the information includes at least a group identification number of the service user, a terminal number, and a service user identifier for performing the message of the listener.

The list generation module is configured to generate an RMSL of each group call cell, and send the generated RMSL to the BSS to which the corresponding group call cell belongs.

List generation module generates first RMSL all required service information reported by the user a list of the RML listener, then according to the distribution of the user wherein the global and local users, each cell determined ₀

The list generation module may further include the following units:

The RML unit is used to determine the list of all service users that need to be reported. The RML unit obtains status information of the service user, and adds or deletes the service user in the RML according to the status information. The status of the service user may be as follows: Shutdown; In other call services; Out of service area; Not in group call area; Or boot from shutdown state; End other call service; Enter service area; Enter group call area. Or the console issues a status indicating that the part of the business user is required to be queried, and the business users to be queried are regarded as RML. By default, first When the listener information is reported, the service users of all the group call services stored in the service user information storage module are added to the RML. If a service user does not report the information in the last period of the listener information, the frequency of the information reported by the service user is adjusted to be reported once every n listener information reporting periods, and the current listener information is determined according to the adjusted frequency. Whether the service user needs to report the information in the reporting period, if necessary, join the service user to the RML, and if not, do not join; where m and n are preset values.

The status identifying unit identifies any service user in the RML obtained by the RML unit as a local user or a global user corresponding to the specific group calling cell. The state mentioned here refers to whether the business user is a local user or a global user. The service user performs a certain service, so that the A-MSC can determine the group call cell in which the service user is located, and the status identification unit uses the service user as the local area user of the group call cell; or the previous listener information In the upper ^=艮 period, the service user reports the listener information in the determined group call cell, and the service user is the local user of the group call cell in the next cycle; for the service user that cannot be determined as the local area user Then as a global user.

The RMSL generating unit is configured to collect the global users obtained by the status identifying unit and the local users of each group calling cell respectively, to obtain the RMSL of each group calling cell.

a period determining module, configured to determine, according to the RMSL generated by the list generation module, a delay of the listener information uplink period of each group call cell, and send the determined delay to the corresponding group call cell by using the transceiver module BSS. Specifically, the listener information reporting period of the group call cell in the MSRL is used as a standard, and the corresponding delay is added in the process of reporting the listener information of other group call cells, so that the listener information of each group call cell is reported. The period is consistent with the standard listener information reporting period. Or the relationship between the range of the number of service users and the delay is set in advance. For example, the delay corresponding to the number of service users is 1 to 10 is 300 ms, the delay corresponding to the number of 10 to 20 is 200 ms, and the number is 20 to 30. The delay is 300ms. In this way, according to the number of service users in the MSRL of the group call cell, The corresponding delay adjustment is performed during the reporting of the listener information of the district.

The transceiver module is configured to receive the listener information of the service user from the group call cell of each BSS, and send the RMSL generated by the list generation module and the report period determined by the period determining module to the BSS to which the corresponding group call cell belongs.

For the R-MSC, since it only plays the role of forwarding, it can be consistent with the R-MSC in the prior art.

The BSS needs to broadcast the RMSL corresponding to the group call cell in each group call cell subordinate to the BSS, for example, send a group page message including the RMSL on the broadcast channel of the group call cell. And receiving the listener information reported from the service users in each group of call cells, sending the listener information to the A-MSC, or finally transmitting to the A-MSC through the forwarding of the R-MSC.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

Claim

A method for implementing a listener identification service, characterized in that the method comprises the following steps:

Determining the list of business users who need to report the listener message during the current listener information reporting period RML;

The method according to claim 1, wherein the performing the listener information further comprises: after all the service users in a group call cell participating in the group call complete the listener information report, enter The next listener information of the cell is on the 4th cycle.

The method according to claim 1, wherein, if the current listener information reporting period is the first listener information reporting period, the RML includes identifiers of all service users participating in the group call service.

The method according to claim 1, wherein the determining the RML that needs to be reported in the current listener information reporting period comprises: if the service user is in any of the following situations in the last listener information reporting period: If the service is shut down, in other call services, not in the service area, or not in the group call area, the service user is deleted from the RML.

The method according to claim 1, wherein the determining the RML comprises: if the service user is in any of the following situations in the last listener information reporting period: starting from a power off state, ending other call services, After entering the service area or entering the group call area, the service user is added to the RML.

6. The method of claim 1 wherein said determining RML comprises: If the service user does not upload the information on the listener information, the frequency of the information reported by the service user is adjusted to be reported once every n listener information, and the current listener is determined according to the adjusted frequency. Whether the information is required to be reported by the service user, if necessary, the service user is added to the RML, and if not, the user is not added; wherein, m and n are preset values.

The method according to claim 6, wherein the determining the RML further comprises: if the reporting message of the service user who has adjusted the frequency of the upper information is received on the last listener information, the The frequency of the information reported by the service user is restored to the default reporting frequency, and the service user is added to the RML. The default reporting frequency is reported for each listener information reporting period.

The method according to claim 1, wherein the determining the RML is: deleting an original service user in the RML, and adding the service user specified by the dispatching station to the RML.

The method according to claim 8, wherein the determining the RML is: when the scheduling station cancels the designated service user in the last listener information reporting period, the RML of the current listener information reporting period includes participating in the group. All business users who call the business.

The method according to claim 1, wherein before the group call cells respectively broadcast the group paging message including the service user identifier in the one or more RMLs, the method further includes: determining that the service user in the RML is The local user or the global user, and determine the need for each group call cell to report the listener message service user sub-list. The content of the RML is the set of the global user identifier of the group call and the local user identifier of the group call cell. Union

Then, the group paging message that broadcasts the service user identifier in one or more RMLs in each group call cell is:

For each group call cell, it is determined whether the number of service users in the RML is zero, if not zero, then the group call cell broadcast includes one or more groups of call cells in the MSRL industry Group paging message identified by the user.

The method according to claim 10, wherein the determining that the service user in the RML is a local user is: placing the previous listener information on a group call cell participating in the group call in the ^=艮 period The service user receiving the message reported by the listener is determined to be the local user of the group call cell;

Determining the service user in the RML as a global user is: determining, as a global user, a service user that cannot determine the group call cell in the previous listener information reporting period; if the current listener information is on the first cycle In the period of the secondary listener information, all the business users in the RML are regarded as global users.

The method according to claim 10, wherein the step of entering the next listener information reporting period of the cell further comprises: adjusting a listener information reporting period of the cell.

The method according to claim 12, wherein the listening information reporting period of the cell is adjusted to: determine whether the number of service user identifiers in the MSRL of the current cell is a service in each group call cell If the number of user identifiers is the largest, if yes, the next listener information reporting period is immediately entered; otherwise, the waiting state is entered, until the cell with the largest number of service user IDs completes the current period of the listener information report, and then enters the next listener information report. cycle.

The method according to claim 12, wherein the listening information reporting period of the current cell is adjusted to: preset a correspondence between a range of the number of the RMSL service user identifiers and a waiting delay, according to the MSRL of the current cell. The number of the service user IDs belongs to the range, and the entry duration is the wait state of the waiting delay corresponding to the belonging range.

The method according to claim 1, wherein the broadcast group paging message is: broadcasting a group paging message by using a fast associated control channel.

The method according to any one of claims 1 to 15, wherein the group The service user in the calling cell reports the listener information according to the matching result of the service user identifier and the received service group identifier in the group paging message:

The service user receives the group paging message, and matches the service user identifier carried in the received group paging message with the service user identifier stored in the group. If the matching is successful, the service identifier is in the group paging message according to the matched identifier. The location, calculate the timing of the self-report, and report the listener information at the calculated timing; if the match is unsuccessful, no processing is performed.

The method according to claim 16, wherein the service user identifier is information related to an international mobile subscriber identity IMSI of the service subscriber mobile terminal.

The method according to claim 17, wherein before the determining the RML that needs to be reported in the current listener information reporting period, the method further comprises: separately from the IMSI of all service users of the group call service The string is extracted, and the string is stored on the network side as the service user identifier of the corresponding service user.

The method according to claim 18, wherein the character string is extracted from the IMSI of all service users of the group call service, and the character string is stored on the network side as a corresponding service user. Business user IDs include:

Selecting an IMSI of the service user whose identity is not determined, determining whether the character string formed by the last I bit of the selected IMSI is the same as the determined service user identity, and if the same is not found, the IIM after the selected IMSI is used as the The service user ID is forwarded to the IMSI of the next unidentified service user and performs the relevant steps; if the same is found, the next step is performed; if there is no unidentified service user, the process is exited; wherein I is preset Setting the IMSI corresponding to the selected IMSI and the same service user identifier as the last I bit of the selected IMSI as the object to be compared;

Determining whether the J bits are the same after the IMSI in the object to be compared, if different, the J bits after the IMSI in the object to be compared are used as the identifier of the corresponding service user, and the IMSI of the service user of the next unidentified identifier is transferred to the IMSI and the relevant steps are performed; Otherwise let: ί+1 and continue to judge the pair to be compared The step of whether the last J bits of the IMSI are the same; where, for the first time, J = I+1.

20. A mobile switching center MSC, wherein the MSC comprises the following modules:

a list generating module, configured to generate an RMSL corresponding to the group call cell according to the group caller information of each group call cell received by the MSC;

The transceiver module is configured to receive the listener information of the service user of each group call cell, send the received listener information to the list generation module, and send the generated RML generated by the list generation module to the base station to which each group call cell belongs Subsystem BSS.

The MSC according to claim 20, wherein the MSC further includes a period determining module, configured to determine the listener information of each group call cell according to the number of service users in the RMSL generated by the list generating module. Delaying the reporting period, and sending the determined delay information to the transceiver module;

And the transceiver module is further configured to send the delay information to a BSS of the corresponding group call cell.

The MSC according to claim 20, wherein the MSC further includes a service user information storage module, configured to store information of all service users of the group call service;

And the list generating module is further configured to generate an RMSL of each group call cell according to the service user information stored by the service user information storage module.

The MSC according to claim 20, 21 or 22, wherein the list generation module further comprises:

The RML unit is configured to determine a list of all the service users that need to be on the listener's information; the status identifier unit is configured to identify any service user in the service user list obtained by the RML unit as the office corresponding to the specific group call cell. Domain user or global user;

RMSL generating unit, used to identify the global user and each group obtained by the status identifying unit The local users of the calling cell respectively take the union to obtain the MSRL of each group calling cell.

24. An implementation system for a listener identification service, comprising an MSC, a BSS, and a mobile terminal, wherein

The MSC is configured to generate an RRMS corresponding to the group of call cells according to the listener information reported by each group call cell, and send the RMSL to the BSS to which the group call cell belongs; the BSS is used in the subordinate Each group call cell broadcasts a group paging message corresponding to the RMSL, and sends the information reported by the mobile terminal to the MSC;

The mobile terminal is configured to receive a group paging message, and perform the listener information reporting according to the indication of the group paging message.

25. The system of claim 24, wherein the system further comprises a dispatching station for transmitting an indication to the MSC to query the particular mobile terminal.