WO2007033554A1 - Procede et systeme pour realiser un appel de groupe - Google Patents

Procede et systeme pour realiser un appel de groupe Download PDF

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Publication number
WO2007033554A1
WO2007033554A1 PCT/CN2006/001690 CN2006001690W WO2007033554A1 WO 2007033554 A1 WO2007033554 A1 WO 2007033554A1 CN 2006001690 W CN2006001690 W CN 2006001690W WO 2007033554 A1 WO2007033554 A1 WO 2007033554A1
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WO
WIPO (PCT)
Prior art keywords
user
group call
group
channel
network side
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Application number
PCT/CN2006/001690
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English (en)
Chinese (zh)
Inventor
Changdong Yang
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Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2007033554A1 publication Critical patent/WO2007033554A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast

Definitions

  • the present invention relates to the field of trunking communication technologies, and in particular, to a group call establishing method and system thereof. Background technique
  • the digital trunking communication network is a new mobile communication system that emerged at the end of the 20th century.
  • public mobile communication networks such as GSM and CDMA networks
  • it can also realize any communication between individuals and groups. .
  • GT800 trunking communication technology is a new professional digital trunking communication technology based on time division multiple access. It combines cellular communication technology to optimize the combination of TDMA and TD-SCDMA communication technologies to provide high performance for professional cluster users.
  • Large-capacity cluster communication service; and GT800 trunking communication system has the advantages of stable system performance, strong sustainable development capability, fast connection performance and high-speed data service.
  • the network side needs to send a group call notification message on the notification channel (NCH, Notification Channel) of all the cells, and the group call notification message includes the group call.
  • Identification group call ID
  • other users in the corresponding group monitor the group call ID and the self-user identification module included in the group call notification message sent on the NCH channel by monitoring the NCH channel in the cell in which the cell is located.
  • the pre-written group call ID is the same, and immediately responds to the group call notification message, and joins the group call initiated by the user, thereby completing the establishment of the group call.
  • NCH channel resources are currently very limited in the GT800 trunking communication system, a cell may be allocated an NCH channel in general. After a large number of group calls are simultaneously initiated, the network side needs to periodically send different group call notification messages on each NCH channel. Since the NCH channel resources are relatively tight, when multiple group call notification messages need to be sent, Each group call notification message needs to be queued and sent on the NCH channel. Therefore, when the number of group call notification messages to be sent by the network side is too large, the group call notification message may be delayed or lost. This will definitely affect the operational quality of the group call communication service. Summary of the invention
  • the NCH channel resource improves the operational quality of the group call communication service in the GSM standard trunking communication system.
  • a group call establishment method includes the following steps:
  • A The network side of the trunking communication system of the GSM system, when the user initiates a group call, according to the group call identifier carried in the group call initiation message sent by the user, and indexes the group where the user is located;
  • the other users in the group are sequentially paged to the group call initiated by the user, and the establishment of the group call is completed.
  • the group call identifier is a group call number.
  • the user identifier is a subscriber number.
  • the step B specifically includes the following steps:
  • the network side of the GSM system of the GSM system obtains an international mobile subscriber identity corresponding to each user according to other user number information in the group to which the user belongs.
  • the network side determines, for each user that feeds back the paging response message, whether the group call channel is allocated to the user who feeds the paging response message, and if yes, assigns the user to the allocated group call channel; otherwise, The user assigns a group call channel and assigns the user to the assigned group call channel.
  • the method further comprises the steps of:
  • the speaking user implements mobility management through cell handover processing; and the receiving user implements mobility management through cell reselection processing.
  • the process for the user to implement the mobility management by the cell reselection includes: cl, the receiving user locating a new cell, and sending a reselection notification message to the network side in the new cell;
  • the network side determines whether there is a group call channel in the new cell, and if yes, assigns the answering user to the group call channel in the new cell; otherwise, the The new cell allocates a group call channel and assigns the answering user to the assigned group call channel.
  • the process for the user to implement the mobility management by the cell reselection further includes: c3, the network side performs downlink detection in the original cell where the receiving user is located, to determine whether the original cell is still in the original cell. There is an answering user, if yes, the group call channel in the original cell is reserved; otherwise, the group call channel in the original cell is deleted.
  • the GSM system trunking communication system is a GT800 trunking communication system.
  • a group call establishment system includes a network side and a terminal device of a GSM system, and the network side includes:
  • the index unit the network side of the trunking communication system for the GSM system, when the user initiates a group call, according to the group call identifier carried in the group call initiation message sent by the user, indexing the group where the user is located; All other user identifiers in the group to which the user is indexed by the indexing unit are sequentially paged to other users in the group to the group call initiated by the user, to complete the establishment of the group call. .
  • the calling unit specifically includes:
  • Obtaining a subunit configured to obtain an international mobile subscriber identity corresponding to each user according to other user identifiers in the group in which the user is indexed by the index unit;
  • a paging subunit configured to initiate paging according to the international mobile subscriber identity of each user acquired by the acquiring subunit, and sequentially to other users in the group;
  • a paging response receiving subunit configured to receive a paging response message fed back to the network side after the other users in the group receive the paging message initiated by the paging subunit;
  • a determining subunit configured to determine, for each user that feeds back a paging response message to the paging response receiving subunit, whether the group call channel has been allocated for the user who feeds back the paging response message;
  • a first channel assignment subunit configured to: when the judgment subunit determines that the result is yes, assign the user to the allocated group call channel;
  • a channel allocation subunit configured to allocate a group call channel to the user when the judgment subunit determines that the result is no
  • a second channel assignment subunit configured to assign the user to the group call channel allocated by the channel allocation subunit.
  • the terminal device includes:
  • a cell locating unit configured to successfully establish a new cell in the process of the user as the answering user
  • a reselection notification sending unit configured to send a reselection notification message to the network side in the new cell that is located by the cell positioning unit;
  • the network side further includes:
  • a first determining unit configured to determine, according to the reselection notification message sent by the reselection notification sending unit, whether a group call channel exists in the new cell
  • a first channel assigning unit configured to: when the first determining unit determines that the result is yes, assign the answering user to a group call channel in the new cell;
  • a channel allocation unit configured to allocate a group call channel to the new cell when the first determining unit determines that the result is no
  • a second channel assignment unit configured to assign the answering user to the group call channel of the channel allocation unit allocation.
  • the network side further includes:
  • a downlink detecting unit configured to perform downlink detection in the original cell where the receiving user is located; and a second determining unit, configured to determine, according to the detection result of the downlink detecting unit, whether the receiving user still exists in the original cell;
  • a channel deleting unit configured to delete the group call channel in the original cell when the second determining unit determines that the result is no.
  • the beneficial effects that can be achieved by the present invention are as follows:
  • the invention provides a group communication call (group call ID) carried in the group call initiation message sent by the user when the user initiates a group call when the user initiates a group call, the index The group in which the user is located; and according to other user identifiers (user IDs) in the group to which the user is located, sequentially paging other users in the group to the group call initiated by the user. Thereby completing the establishment of the group call.
  • the GSM system trunking communication system (such as the GT800 trunking communication system) can be used in the group call establishment process without occupying the NCH channel resources, thereby saving the NCH channel resources and improving the group in the GSM standard trunking communication system.
  • the running traffic of the communication service at the same time, the group user does not need to monitor the NCH channel in real time, but listens to the paging channel (PCH, Paging Channel) through the discontinuous reception (DRX) mode, thereby saving the battery power of the user terminal.
  • PCH paging channel
  • Paging Channel paging channel
  • DRX discontinuous reception
  • the group call ID is not required to be written into the SIM card of the group user, so that when the user applies for the group call service, the group side processing process on the network side is more convenient.
  • FIG. 1 is a flow chart of a main implementation principle of a method for establishing a group call according to the present invention
  • FIG. 2 is a flowchart of processing for establishing a group call by the network side in the paging mode to call other users in the group into the group call in the method of the present invention
  • FIG. 3 is a flowchart of processing performed by a receiving user to implement mobility management by cell reselection processing in the method of the present invention
  • FIG. 4 is a block diagram showing the main components of the group call establishment system of the present invention.
  • Figure 5 is a block diagram showing the specific structure of a paging unit in the system of the present invention.
  • FIG. 6 is a block diagram showing the main components of the network side and the terminal device side for implementing mobility management problems in the system of the present invention. detailed description
  • the design idea of the solution of the present invention is as follows: In the GSM standard trunking communication system (such as the GT800 trunking communication system), the technology of forming a group call service by paging mode is realized, thereby saving the cluster communication system. NCH channel resources in. That is, in the GSM-based trunking communication system, the initiator of the group call adopts the normal group call initiation process (same as the prior art), and the users in other groups join the group call to adopt the paging mode proposed by the solution of the present invention.
  • FIG. 1 is a flow chart of the main implementation principle of the group call establishment method of the present invention.
  • the main implementation process is as follows:
  • Step S10 The network side of the trunking communication system of the GSM system indexes the group call identifier (group call ID) carried in the group call initiation message sent by the user when the user initiates the group call, and indexes the group where the user is located;
  • group call ID group call identifier
  • the initiation process of the call is the same as the initiation process of the prior art, and the present invention will not be repeated here;
  • GSM 800M trunking communication system The most typical example of the GSM standard trunking communication system here is the GT800 trunking communication system (ie GSM 800M trunking communication system);
  • Step S20 The network side of the GSM system of the trunking communication system is based on the index of other user identifiers (user IDs) in the group in which the user is located, and sequentially pages other users in the group to the user.
  • the group calls, thereby completing the establishment of the group call, that is, the network side pages each user through the PCH channel according to the identification information (such as number information, etc.) of other users in the group, so that each user can receive the paging message, Join the group call that was initiated.
  • the group call identifier (group call ID) mentioned in the foregoing step S10 may be, but is not limited to, the group call number information.
  • the user identifier (user ID) mentioned in the above step S20 may be but not limited to the user number information.
  • FIG. 2 is a flowchart of processing a group call by calling the other users in the group to the group call by using the paging mode in the method of the present invention.
  • the specific implementation process is as follows:
  • Step S201 The network side of the GSM system of the GSM system obtains the international mobile subscriber identity corresponding to each user according to the other subscriber number information (the MSISDN information of each subscriber) in the group where the user is located. (IMSI);
  • Step S202 the network side of the GSM standard trunking communication system is obtained according to the obtained users.
  • IMSI initiates paging for each of the other users in the group;
  • Step S203 After receiving the paging message sent by the network side, the other users in the group separately feed back the paging response message to the network side;
  • Step S204 the network side of the trunking communication system of the GSM system determines, for each user of the feedback paging response message, whether the group call channel has been allocated for the user who feeds the paging response message, and if yes, step S205 is performed; otherwise, the step is performed.
  • step S206 the network side of the trunking communication system of the GSM system determines, for each user of the feedback paging response message, whether the group call channel has been allocated for the user who feeds the paging response message, and if yes, step S205 is performed; otherwise, the step is performed.
  • Step S205 the network side of the GSM standard trunking communication system assigns the user to the allocated group call channel
  • Step S206 The network side of the GSM system trunking communication system allocates a new group call channel to the user, and assigns the user to the newly allocated group call channel.
  • the network side of the GT800 trunking communication system queries the MSISDN number of each user corresponding to the group call by using the group call ID, and obtains the IMSI number of each user according to each MSISDN number, and then performs a paging processing process according to the IMSI number of each user, that is, The IMSI numbers of each user in the group sequentially page each user in the group.
  • each user in the group responds to the paging response message, and the network side allocates a group call channel to the user responding to the paging response message, and assigns the user to the allocated group call channel; If the channel has been established, the user is directly assigned to the already assigned group call channel.
  • the network side picks up the network according to the occupancy of the uplink channel, and connects the uplink channel of the speaker to the downlink channel of each listener in the group.
  • the current normal group call uplink occupation process is entered, that is, the user preempts the uplink channel by using a PTT (Push To Talk) preemption mode to make a speech.
  • PTT Push To Talk
  • the network side will actively remove the group call and release the group call channel occupied by each user. Each user can quit the group call by hanging up.
  • both the speaker user and the listener user may move between different cells, which involves mobility management.
  • Solution wherein the method of the present invention is presented herein in establishing a successful group In the call, the speaking user implements mobility management through cell handover processing (the specific implementation process is the same as the cell handover processing in the prior art:); and the receiving user implements mobility management through cell reselection processing.
  • FIG. 3 is a flowchart of processing in which the user in the method of the present invention implements mobility management through cell reselection processing, and the specific implementation process is as follows:
  • Step S301 The receiving user locates a suitable new cell according to the signal condition of each neighboring cell in the group call communication process;
  • Step S302 the receiving user sends a reselection notification message to the network side in the located new cell.
  • Step S303 after receiving the reselection notification message, the network side determines whether there is an established group call channel in the new cell, if If yes, go to step S304; otherwise, go to step S305;
  • Step S304 the network side assigns the answering user to the group call channel in the new cell, and then proceeds to step S306;
  • Step S305 The network side allocates a new group call channel to the new cell, and assigns the answering user to the newly allocated group call channel.
  • Step S306 the network side performs downlink detection processing in the original cell where the user is located.
  • Step S307 the network side determines, according to the downlink detection result, whether there is still an answering user in the original cell, and if yes, step S308; otherwise, Execution step according to S309;
  • Step S308 the network side reserves the group call channel in the original cell
  • Step S309 the network side deletes the group call channel in the original cell.
  • the group call establishment method of the present invention realizes the establishment of the group call by sending a paging message on the PCH channel instead of sending the group call notification message on the NCH channel, in the case that the group call user is relatively small, since the paging message is for the user If the location area is sent, it does not need to be sent over the entire network. In this case, if the number of users is relatively small, only part of the PCH channel resources are needed to establish the group call. For the small-scale group call, the sample is also sampled on the NCH channel. Sending a group call notification message needs to be sent on the entire network, thus causing serious waste of NCH channel resources.
  • the present invention also proposes a group call establishment system.
  • FIG. 4 is a block diagram of the main components of the group call establishment system of the present invention, wherein the group call establishment system of the present invention includes a GSM system.
  • the network side of the trunking communication system and the terminal equipment, wherein the network side of the trunking communication system of the GSM system includes an indexing unit 10 and a paging unit 20, and the functions of each part are as follows:
  • the indexing unit 10 the network side of the trunking communication system for the GSM system, when the user initiates a group call, according to the group call identifier (group call ID) carried in the group call initiation message sent by the user, indexing the group where the user is located ;
  • the paging unit 20 is configured to sequentially page other users in the group to the group call initiated by the user according to other user identifiers (user IDs) in the group to which the user is indexed by the index unit 10 Medium, thereby completing the establishment of the group call.
  • the paging unit specifically includes an obtaining subunit 201, a paging subunit 202, a paging response receiving subunit 203, and a determining subunit 204.
  • the obtaining subunit 201 is configured to obtain an international mobile subscriber identity (IMSSI) corresponding to each user according to other user IDs in the group in which the user is indexed by the indexing unit 10;
  • IMSSI international mobile subscriber identity
  • the paging sub-unit 202 is configured to separately initiate paging according to the IMSI of each user acquired by the obtaining sub-unit 201, and then separately perform other pagings on the other users in the group;
  • the paging response receiving subunit 203 is configured to receive a paging response message fed back to the network side by the other users in the group after receiving the paging message initiated by the paging subunit 202;
  • the determining subunit 204 is configured to determine, for each user that feeds back the paging response message to the paging response receiving subunit 203, whether the group call channel has been allocated for the user who feeds back the paging response message; the first channel assignment subunit 205. For determining that the result of the sub-unit 204 is YES, assigning the user to the allocated group call channel;
  • a channel allocation sub-unit 206 configured to allocate a new group call channel to the user if the determination result of the sub-unit 204 is negative;
  • the second channel assignment sub-unit 207 is configured to assign the user to the new group call channel allocated by the channel assignment sub-unit 206.
  • FIG. 6 is a network side and terminal for implementing mobility management in the system of the present invention.
  • a cell locating unit 401 configured to succeed in the group call establishment, and locate a suitable new cell according to the signal quality of each neighboring cell in the process of the user as the answering user;
  • the reselection notification sending unit 402 is configured to send a reselection notification message to the network side in the new cell located by the cell locating unit 401;
  • the network side further includes a first determining unit 301, a first channel assigning unit 302, a channel allocating unit 303, a second channel assigning unit 304, a downlink detecting unit 305, a second determining unit 306, and a channel deleting unit 307, wherein each
  • a first determining unit 301 a first channel assigning unit 302
  • a channel allocating unit 303 a channel allocating unit 303
  • a second channel assigning unit 304 a downlink detecting unit 305
  • a second determining unit 306 a channel deleting unit 307
  • the first determining unit 301 is configured to determine, according to the reselection notification message sent by the reselection notification sending unit 402, whether there is an established group call channel in the new cell;
  • the first channel assigning unit 302 is configured to: when the first determining unit 301 determines that the result is yes, assign the answering user to the existing group call channel in the new cell;
  • the channel allocating unit 303 is configured to allocate a new group call channel to the new cell if the first determining unit 301 determines that the result is negative.
  • a second channel assignment unit 304 configured to assign the answering user to a new group call channel allocated by the channel allocating unit 303;
  • the downlink detecting unit 305 is configured to perform downlink detection processing in the original cell where the answering user is located;
  • the second determining unit 306 is configured to determine, according to the detection result of the downlink detecting unit 305, whether there are other receiving users in the original cell;
  • the channel deleting unit 307 is configured to delete the group call channel in the original cell if the judgment result of the second determining unit 306 is negative.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé pour réaliser un appel de groupe qui passe par les étapes suivantes: lorsque l'utilisateur démarre un appel de groupe, le côté réseau du système de communication de groupe GSM indexe le groupe auquel appartient l'utilisateur en fonction de l'identifiant d'appel de groupe réalisé dans le message de début d'appel de groupe par l'utilisateur. L'appel des autres utilisateurs dans le groupe est réalisé dans le groupe de l'utilisateur appelé en fonction des autres identifiants utilisateur, établissant ainsi l'appel de groupe. La présente invention concerne également un système pour établir un appel de groupe correspondant au procédé. L'invention peut économiser les ressources du canal NCH et augmenter la qualité du service de communication d'appel de groupe dans le système de communication de groupe GSM.
PCT/CN2006/001690 2005-09-26 2006-07-17 Procede et systeme pour realiser un appel de groupe WO2007033554A1 (fr)

Applications Claiming Priority (2)

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CN200510105028.2 2005-09-26
CN200510105028A CN1852492B (zh) 2005-09-26 2005-09-26 组呼建立方法及其系统

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CN102802159B (zh) * 2011-05-25 2015-09-16 中兴通讯股份有限公司 一种公共控制信道配置的调整方法、系统和基站控制器
CN103249008B (zh) * 2012-02-03 2018-10-26 上海中兴软件有限责任公司 听用户信息的统计方法、装置及系统、听用户终端
CN112312333B (zh) * 2020-11-02 2021-11-05 深圳市桑达无线通讯技术有限公司 一种铁路专用移动终端组呼处理控制方法

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