WO2007115507A1 - Procédé de contrôle d'appel de groupe de terminal dans le service gprs et appareil correspondant - Google Patents

Procédé de contrôle d'appel de groupe de terminal dans le service gprs et appareil correspondant Download PDF

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Publication number
WO2007115507A1
WO2007115507A1 PCT/CN2007/001166 CN2007001166W WO2007115507A1 WO 2007115507 A1 WO2007115507 A1 WO 2007115507A1 CN 2007001166 W CN2007001166 W CN 2007001166W WO 2007115507 A1 WO2007115507 A1 WO 2007115507A1
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WIPO (PCT)
Prior art keywords
group call
terminal
notification information
gprs service
call notification
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PCT/CN2007/001166
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English (en)
French (fr)
Inventor
Fei Wang
Minjun Shen
Changdong Yang
Fei Chen
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Huawei Technologies Co., Ltd.
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Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2007115507A1 publication Critical patent/WO2007115507A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/40Connection management for selective distribution or broadcast
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/06Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a terminal group call control method and apparatus in a general packet radio service for mobile communication. Background technique
  • the second generation of digital mobile communication technology (2G, The Second Generation) is currently widely used, including GSM, Code Division Multiple Access (CDMA).
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • GSM Global System
  • ETSI European Telecommunications Standards Institute
  • GSM Global Access
  • the GSM system is mainly divided into two parts: the base station subsystem (BSS, Base Station Subsystem) and the network and switching subsystem (NSS, Network and Switching Subsystem).
  • BSS Base Station Subsystem
  • NSS Network and Switching Subsystem
  • the BSS is responsible for the control of the wireless channel, through which each call is connected;
  • the NSS is responsible for the call control function, and the call is always connected via NSS.
  • the BSS also includes a terminal, a base station controller (BSC, Base Station Controller) and a base station (BS, Base Station).
  • BSC Base Station Controller
  • BS Base Station
  • One BSC controls one or more base transceiver stations (BTS, Base Transceiver Station). They are in the GSM network.
  • BTS Base Transceiver Station
  • the relay is provided between the fixed part and the wireless part, and they also provide some switching functions and internal control functions.
  • the terminal is connected to the BTS and the BSC through the air interface.
  • the NSS includes the Mobile Services Switching Center (MSC), the Home Location Register (HLR), and the Visit Location Register (VLR, Visit Location Register ), Authentication Center (AUC, Authentication Center), Equipment Identity Register (EIR), and Operations and Maintenance Center (OMC).
  • MSC Mobile Services Switching Center
  • HLR Home Location Register
  • VLR Visit Location Register
  • AUC Authentication Center
  • EIR Equipment Identity Register
  • OMC Operations and Maintenance Center
  • the introduction of General Packet Radio Service (GPRS) will greatly extend the life cycle of the GSM system and is an upgrade to the GSM network.
  • the GPRS network adds a Serving GPRS Support Node (SGSN) to the GSM network, a Gateway GPRS Support Node (GGSN), and a Packet Control Unit (PCU) is added to the BSS.
  • the terminal can exchange data with a common packet data network (PDN, Packet Data Network) to implement end-to-end data transmission and reception between the user and the user.
  • PDN Packet Data Network
  • GPRS can provide higher data rates than the existing GSM network of 9.6kbit/s, using the same frequency band, bandwidth, burst structure, wireless modulation standard, frequency hopping rules and the same time division multiple access (TDMA, Time Division) as GSM. Multiple Access) Frame structure. Therefore, when the GPRS system is built on the GSM system, most of the components in the GSM system do not need hardware changes, and only software upgrades are required.
  • TDMA Time Division Multiple Access
  • one TDMA frame is divided into 8 time slots, and the information transmitted in each time slot is called a "burst", one time for each TDMA frame.
  • the gap constitutes a physical channel.
  • Physical channels are defined as different logical channels.
  • a physical channel can be defined as either a logical channel or a part of a logical channel, that is, a logical channel can be composed of one or several physical channels.
  • GPRS can make more efficient use of wireless network channel resources, especially suitable for bursty and frequent small-flow data transmission; GPRS supports higher data transmission rate, theoretical peak value of 115kbps; GPRS charging method is more flexible, can be based on data traffic Billing; GPRS can also support users to make voice calls while data transmission and so on.
  • GPRS is a packet data carrying service that distributes data into a number of independent data packets for transmission. It only takes up bandwidth when data needs to be transmitted, and can be charged according to the amount of data transmitted, which is more reasonable and flexible.
  • the GT800 system is compatible with all the features of the original GSM network and introduces a new type of call: Group call.
  • the group call feature is that multiple users participate in one call at the same time, and adopt half-duplex communication mode; each group is identified by a group ID (ID, IDentity), corresponding to multiple users.
  • ID group ID
  • IDentity a group ID corresponding to multiple users.
  • the system broadcasts a notification message within a certain area (this area is called a group call area i or), so that users in the group call area can participate in the group call/broadcast call.
  • the notification message is broadcast on the broadcast channel or on a Fast Associated Control Channel (FACCH) on the traffic channel.
  • FACCH Fast Associated Control Channel
  • the GPRS service cannot be received while the group call to which the terminal belongs. This is because the terminal that cannot perform the circuit-switched service and the packet-switched service at the same time cannot monitor the public control channel (NCH, Notification Channel) that sends the notification message when performing the GPRS service, and thus cannot obtain the group call notification message, and thus cannot join the group. call.
  • NCH public control channel
  • the embodiment of the present invention provides a terminal group call control method in a general packet radio service, so that a terminal that cannot perform the circuit switching service and the packet switching service at the same time can receive the group call to which the terminal belongs while performing the GPRS service.
  • the embodiment of the invention provides a terminal group call control method in a general packet radio service, which includes the following steps:
  • the base station subsystem needs to notify the terminal to join the group call, if the base station subsystem supports the universal packet radio service GPRS, the group call notification information is sent to the terminal that is performing the GPRS service.
  • the method further comprises the steps of:
  • An embodiment of the present invention provides a call control apparatus, including:
  • a storage unit configured to cache group call notification information
  • the detecting unit detects whether there is a terminal in the current cell to perform GPRS service, and detects whether there is a terminal that is using the GPRS service and newly enters the cell;
  • a sending unit configured to send the group call notification information to the corresponding terminal
  • the sending unit determines, at the detecting unit, that the terminal performs GPRS service and/or has a positive When the GPRS service is used and the terminal of the cell is newly entered, the group call notification information buffered by the storage unit is sent to the corresponding terminal.
  • the embodiment of the invention provides a communication terminal, including:
  • a receiving unit configured to receive group call notification information
  • the detecting unit detects the group call notification information received by the receiving unit, and determines whether the terminal belongs to the group call member;
  • the processing unit reports the response message of the group call notification information, and/or prompts the user to join the group call, and/or controls the GPRS service;
  • the processing unit performs corresponding operations according to the detection result of the detecting unit:
  • the processing unit suspends the ongoing GPRS service, and when the group call notification information received by the receiving unit does not include the group call channel description, the processing unit a response message for reporting the group call notification information; if the group call notification information received by the receiving unit includes a group call channel description, the processing unit prompts the user to enter the group call;
  • the processing unit ignores the group call notification information.
  • An embodiment of the present invention provides a network system for implementing a group call, including: a base station subsystem, a packet control device, and a communication terminal,
  • the packet control device is configured to buffer the received group call notification information, determine whether there is a terminal that is performing GPRS service in the current cell, and determine that the terminal performs GPRS service and/or has used the GPRS service and newly enters the cell. Sending, by the terminal, the group call notification information to the corresponding terminal;
  • the base station controller of the base station subsystem When it is required to notify the terminal to join the group call, the base station controller of the base station subsystem sends a message including the group call notification information to the packet control apparatus of the base station subsystem;
  • the packet control device buffers the group call notification information in the message, and determines whether the terminal in the current cell has a GPRS service, and if so, sends the group call notification to the terminals.
  • the packet control device sends all cached group call notification information to the terminals when detecting that there is a terminal that is using the GPRS service and newly enters the cell.
  • An embodiment of the present invention provides a base station controller, including:
  • a storage unit configured to cache group call notification information
  • the detecting unit detects whether there is a terminal in the current cell to perform GPRS service, and detects whether there is a terminal that is using the GPRS service and newly enters the cell;
  • a sending unit configured to send the group call notification information to the corresponding terminal
  • the sending unit sends the group call notification information buffered by the storage unit to the corresponding terminal when the detecting unit determines that the terminal performs the GPRS service and/or has the terminal that is using the GPRS service and newly enters the cell.
  • the BSS when the BSS needs to notify the terminal to join the group call, if the BSS supports the GPRS, the corresponding group call notification information is sent to the terminal that is performing the GPRS service, from the perspective of the user.
  • the terminal that can not perform the circuit switching service and the packet switching service at the same time can receive the group call to which the terminal belongs while performing the GPRS service, thereby improving the user experience.
  • FIG. 1 is a flowchart of a terminal group call control method in a GPRS service according to a first embodiment of the present invention
  • FIG. 2 is a flowchart of a terminal group call control method in a GPRS service according to a second embodiment of the present invention
  • FIG. 4 is a flowchart of a terminal group call control method in a GPRS service according to a fourth embodiment of the present invention.
  • the BSS when the group call notification needs to be issued, if the terminal is performing the GPRS service and cannot receive the group call notification of the circuit domain, the BSS sends a group call notification to the terminals in the packet domain, and the terminal only needs to notify the group call. According to the notification, join the current group call.
  • terminals that support GPRS fall into three categories:
  • the first type of terminal itself can support receiving the group call notification while using the GPRS service, so it is not within the scope of application of the technical solution of the present invention; and the latter two types of terminals cannot perform services in the circuit domain and the packet domain at the same time, and belong to the technology of the present invention.
  • the scope of application of the program is not within the scope of application of the program.
  • the terminal group call control method in the GPRS service is as shown in FIG. 1.
  • the terminal B can simultaneously access the GPRS network and the GSM network, but cannot perform circuit switching and packet switching services at the same time. At this time, the terminal B is performing GPRS service.
  • Terminal C cannot access the GPRS network and the GSM network at the same time. At the same time, only the GPRS service or the circuit switching service can be selected, and the unselected service is in the disconnected state. It is assumed that terminal C is performing GPRS service at this time.
  • Terminal B and terminal C belong to the same group call group.
  • the terminal exchanges information with the BSS through the Um interface, and the A port is between the BSC and the MSC.
  • the steps of the terminal group call control method in the GPRS service are as follows:
  • Step 101 When the terminal B needs to be notified to join the group call, the MSC sends a voice group call service (VGCS, Voice Group Call Service) / voice broadcast service (VBS) assignment request to the BSS of the cell in the group call area.
  • VGCS voice group call service
  • VBS voice broadcast service
  • Step 102 After receiving the VGCS/VBS assignment request message, the BSS activates the group call related channel of the target cell.
  • Step 103 The BSS returns the assignment result of the VGCS/VBS to the MSC by the assignment response message.
  • Step 104 The BSS detects the terminal B that is using the GPRS service in the current cell, and sends a group call notification information (Notification) to the terminal B. In order to ensure that the terminal B can receive the notification, the BSS can adopt a policy of continuously transmitting multiple times. Of course, other strategies can be used to achieve the same purpose.
  • Step 105 After receiving the notification, the terminal B determines whether it belongs to the group call member. If it belongs to the group call member, it proceeds to step 106; if it does not belong to the group call member, the group call notification information is ignored. Step 106: If the terminal B is the group call member, suspend the ongoing GPRS service of the terminal B, and determine whether the group call notification information is included in the group call notification information. If not, the terminal B reports the group call notification information. The response message; if it is included, terminal B starts ringing, prompting the user to join the group call.
  • Step 107 During the validity of the group call, the terminal C enters the group call area, and performs GRPS service in the cell.
  • the BSS detects that the general packet radio service is being used and newly enters the terminal C of the cell, all the currently valid notifications are sent to the terminal C.
  • Step 108 If the terminal C belongs to a member of a group call of the group calls, request the user to confirm whether to disconnect the ongoing GPRS service of the terminal C through the user interface. If the user confirms, then go to step 109.
  • Step 109 The terminal C disconnects the current GPRS network connection according to the confirmation selected by the user, and accesses the GSM network, and then determines whether the notification includes the associated group call channel description. If not, the terminal C The response message of the notification; if included, the terminal C joins the group call to which it belongs. End this process.
  • the terminal group call control method in the GPRS service according to the second embodiment of the present invention is as shown in FIG. 2.
  • the terminal B can simultaneously access the GPRS network and the GSM network, but cannot perform circuit switching and packet switching services at the same time. At this time, the terminal B is performing GPRS service.
  • the terminal exchanges information with the BTS through the Um interface.
  • the BTS exchanges information with the BSC through the second A interface (ABIS).
  • the BSC and the PCU are PB ports, and the BSC and the MSC are A ports.
  • the steps of the terminal group call control method are as follows:
  • Step 201 When it is required to notify the terminal B to join the group call, the MSC sends a VGCS/VBS assignment request to the BSC of the cell in the group call area.
  • Step 202 The BSC sends a channel activation message to the BTS according to the VGCS/VBS assignment request to activate the target cell group call channel.
  • Step 203 After the BTS activates the group call channel of the target cell according to the channel activation message, the BTS returns a channel activation confirmation message.
  • Step 204 After receiving the channel activation acknowledgement message, the BSC returns an assignment result of the VGCS/VBS to the MSC by using the assignment response message.
  • Step 205 The BSC sends a notification message for starting the group call to the BTS.
  • Step 206 The BTS sends a notification message for initiating the group call to the terminal B through the NCH/FACCH.
  • Step 207 At this time, the BSC makes a decision. If the cell supports GPRS, the message containing the Notification is sent to the PCU, for example, it is called a BSC-PCU-NOIF-START_REQ message, and the notified notification is specifically referred to the well-known technical document "081 ⁇ ”. 40408-780, 9.1.21a".
  • Step 208 after the PCU correctly receives the message sent by the BSC, it will receive the message.
  • Step 209 The PCU determines whether there is a terminal B that is performing GPRS service in the current cell. If yes, the notification is sent to the terminal B through the GPRS service related channel, for example, through a packet associated control channel (PACCH, Packet Associate Control Channel). ) issued, where BSS transparently transmits the notification, not any processing.
  • PACCH Packet Associate Control Channel
  • BSS transparently transmits the notification, not any processing.
  • the PCU can adopt a policy of continuously transmitting multiple times. Of course, other strategies can be used to achieve the same purpose.
  • terminal A if terminal A can simultaneously access the GPRS network and the GSM network, and can simultaneously perform packet switching services and circuit switching services, terminal A ignores the group call notification information.
  • Step 210 After receiving the notification, the terminal B determines whether it belongs to the group call member. If it belongs to the group call member, it proceeds to step 211; if it does not belong to the group call member, the group call notification information is ignored.
  • Step 211 If the terminal B is the group call member, suspend the ongoing GPRS service of the terminal B, and determine whether the group call notification information is included in the group call notification information. If not, the terminal B reports the group call notification information. The response message; if it is included, terminal B starts ringing, prompting the user to join the group call.
  • the terminal group call control method in the GPRS service according to the third embodiment of the present invention is as shown in FIG. 3.
  • the terminal C cannot access the GPRS network and the GSM network at the same time, and can only select GPRS at the same time.
  • the service or circuit switched service, while the unselected service is disconnected.
  • the terminal C is performing GPRS service.
  • the interaction interface is the same as the above-mentioned embodiment: the terminal exchanges information with the BTS through the Um interface, the BTS exchanges information with the BSC through the ABIS interface, the PB interface between the BSC and the PCU, and the A interface between the BSC and the MSC.
  • the terminal and the user exchange information through the user interface.
  • the steps of the terminal group call control method are as follows:
  • Steps 301 to 310 are similar to steps 201 to 210, respectively, and are not described herein again.
  • Step 311 If the terminal C is a group call member, the user interface is requested to confirm whether the terminal GPRS is disconnected from the GPRS service.
  • step 312 the terminal C performs an operation according to the confirmation or rejection selected by the user. If the user confirms, the terminal C disconnects the current GPRS network connection and accesses the GSM network, and then determines whether the notification includes a group call channel description, and if not, the terminal C reports the response message of the notification; Including, the terminal C joins the group call.
  • a terminal group call control method in a GPRS service is shown in FIG.
  • the network side resources are released.
  • the BTS and the PCU exchange information with each other, and the BTS exchanges information with the BSC through the ABIS port.
  • the BSC and the PCU are PB ports, and the BSC and the MSC are A ports.
  • the terminal group call control method steps are as follows:
  • Step 401 When the group call needs to be stopped, the MSC sends a notification to the BSC to clear the group call resource (CLEAR_CMD).
  • Step 402 The BSC returns a response message (CLEAR_CMP) for clearing the group call resource.
  • Step 403 The BSC sends a stop notification message to the BTS through the ABIS port.
  • Step 404 The BTS sends a notification to the terminal through the NCH/FACCH according to the received notification message.
  • Step 405 The BSC determines whether the cell that needs to stop the group call supports the GPRS service, and sends a message to the PCU to stop the group call, for example,
  • BSC-PCU-NOTIF-STOP-REQ which contains the group call stop information (Notification indication).
  • GSM 0408-780, 9.1.21a the well-known technology
  • Step 406 After the PCU correctly receives the BSC-PCU-NOTIF-STOP-REQ message, it returns Acknowledgement response message (BSC_PCU_NOTIF_STOP_REQ_ACK:). Then, according to the Notification indication in the BSC_PCU_NOTIF_STOP_REQ message, the Notification information buffered by the PCU is deleted.
  • Step 407 The BSC sends a command to the BTS to deactivate the Slow Associated Control Channel ("SACCH").
  • SACCH Slow Associated Control Channel
  • Step 408 The BSC also sends a release request (REL REQ) to the BTS.
  • step 409 the BTS returns a release confirmation message.
  • Step 410 The BSC sends a Radio Frequency (RF) channel release command (RF_CHAN_REL) to the BTS.
  • RF Radio Frequency
  • Step 411 the BTS returns an RF channel dry release confirmation message.
  • the packet control unit PCU may exist as a logical unit of the BSC. In other words, it may only be physically represented as having one BSC, and the function of the PCU may be part of the BSC function. Even in some systems, there is no logical unit named PCU, and the function of the so-called PCU is implemented by the BSC. It can be understood that there is no substantial difference in such a change, as long as the foregoing second and third embodiments are The BSC and the PCU are considered as a whole, that is, the BSC and the PCU as a whole interact with other devices, and the interaction between the BSC and the PCU acts as an internal interaction.
  • the BSS needs to notify the terminal to join the group call
  • the BSS supports GPRS
  • the corresponding group call notification information is sent to the terminal that is performing the GPRS service. From the perspective of the user, the user does not have to worry about using the GPRS service. Cannot receive a group call, which can improve the user experience.
  • the group call is ended, the resources allocated by the network side for the group call can also be released in time.

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  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

通用分组无线业务中的终端組呼控制方法及装置 本申请要求分别于 2006年 04月 11 日、 2006年 Q4月 27日提交中国专 利局、 申请号分别为 200610025598.5、 200610080027.1 , 发明名称均为 "通 用分组无线业务中的终端组呼控制方法" 的中国专利申请的优先权, 其全 部内容通过引用结合在本申请中。 技术领域
本发明涉及移动通信技术领域, 特别涉及移动通信的通用分组无线业 务中的终端组呼控制方法及装置。 背景技术
第二代数字移动通信技术( 2G, The Second Generation )是目前已被广 泛应用的技术,包括 GSM、码分多址( CDMA, Code Division Multiple Access ) 等。
GSM协议由欧洲电信标准协会( ETSI, the European Telecommunications Standards Institute )制定, 俗称"全球通", 描述了 2G GSM网络移动通信的 相关技术规范。 GSM是目前世界上使用最广的移动通信系统之一, 具有几 项重要特点: 防盗打能力佳、 网络容量大、 手机号码资源丰富、 通话清晰、 稳定性强不易受干扰、 信息灵敏、 通话死角少、 手机耗电量低。
GSM 系统主要分为两个部分: 基站子系统 ( BSS , Base Station Subsystem )和网络和交换子系统( NSS , Network and Switching Subsystem )。 BSS 负责无线通道的控制, 每一个呼叫都通过它来连接; NSS 负责呼叫控 制功能, 呼叫总是通过 NSS连接。
其中, BSS中还包括终端、 基站控制器(BSC, Base Station Controller ) 和基站(BS, Base Station )„一个 BSC控制一个或多个基站收发信机( BTS, Base Transceiver Station )。 它们在 GSM网絡的固定部分和无线部分之间提 供中继, 它们还提供某些交换功能和内部控制功能。 终端通过空中接口连 接到 BTS和 BSC。
NSS包括移动交换中心 (MSC, Mobile services Switching Center ), 归 属位置寄存器(HLR, Home Location Register ), 拜访位置寄存器(VLR, Visit Location Register )、 鉴权中心 (AUC, Authentication Center )、 设备标 识寄存器 (EIR, Equipment Identity Register ) 和操作维护中心 (OMC, Operations & Maintenance Center )。
通用无线分组业务( GPRS , General Packet Radio Service ) 的引入将大 大延长 GSM系统的生存周期, 是对 GSM网络的一个升级。 GPRS网络通 过在 GSM网络中添加服务 GPRS支持节点 ( SGSN, Service GPRS Support Node ), 网关 GPRS支持节点 (GGSN, Gateway GPRS Support Node ), 在 BSS中添加了分组控制单元 ( PCU, Packet Control Unit ), 使得终端可以与 常用分组数据网络(PDN, Packet Data Network ) 实现数据交换, 在用户与 用户间实现端到端的数据发送和接收。
GPRS能提供比现有 GSM网 9.6kbit/s更高的数据率, 采用与 GSM相 同的频段、 频带宽度、 突发结构、 无线调制标准、 跳频规则以及相同的时 分多址(TDMA, Time Division Multiple Access ) 帧结构。 因此, 在 GSM 系统的 ^出上构建 GPRS系统时, GSM系统中的绝大部分部件都不需要作 硬件改动, 只需作软件升级。
与 GSM系统相同,在 GPRS系统的空中接口中,一个 TDMA帧分为 8 个时隙,每个时隙发送的信息称为一个"突发脉冲串(Burst ) ",每个 TDMA 帧的一个时隙构成一个物理信道。 物理信道被定义成不同的逻辑信道。 与 GSM系统不同, 在 GPRS系统中, 一个物理信道既可以定义为一个逻辑信 道, 也可以定义为一个逻辑信道的一部分, 即一个逻辑信道可以由一个或 几个物理信道构成。
GPRS可以更有效的利用无线网络信道资源, 特别适合突发性、 频繁的 小流量数据传输; GPRS支持的数据传输的速率更高,理论峰值达 115kbps; GPRS计费方式更加灵活, 可以按数据流量进行计费; GPRS还能支持用户 在进行数据传输的同时进行语音通话等等。
GPRS是一种分组数据 载业务,将数据分装成许多独立的数据包进行 传输, 只在需要传送数据时才会占用频宽, 可按照传输的数据量计费, 更 加合理、 灵活。
GT800系统兼容原有 GSM网絡所有功能,并引入了一种新的呼叫类型: 组呼。
组呼特征是多个用户同时参与一个呼叫, 采用半双工通信方式; 每一 个群组用一个组身份识别号 (ID, IDentity )来标识, 对应多个用户。 当发 起组呼 /广播呼叫时, 系统在一定的区域范围内广播通知消息(这个区域称 为组呼区 i或),这样在组呼区域内的用户都可以参与这个组呼 /广播呼叫。通 知消息是在广播信道上广播或者在业务信道上的快速相关控制信道 ( FACCH, Fast Associated Control Channel )上发送。
在实际应用中, 对于不能同时进行电路交换业务和分组交换业务的终 端, 在进行 GPRS 业务的同时, 不能接收到该终端所属的组呼。 这是由于 不能同时进行电路交换业务和分组交换业务的终端在进行 GPRS业务时, 不能监听发送通知消息的公共控制信道(NCH, Notification Channel ), 从 而无法获得组呼通知消息, 也因此无法加入组呼。 发明内容
本发明实施例提供一种通用分组无线业务中的终端组呼控制方法, 使 得不能同时进行电路交换业务和分组交换业务的终端, 能够在进行 GPRS 业务的同时, 收到该终端所属的组呼。
本发明实施例提供一种通用分组无线业务中的终端组呼控制方法, 包 括以下步骤:
基站子系统需要通知终端加入组呼时, 如果该基站子系统支持通用分 组无线业务 GPRS,则向正在进行所述 GPRS业务的终端下发组呼通知信息。
更适宜地, 该方法还包括以下步骤:
所述基站子系统检测到有正在使用 GPRS业务并新进入小区的终端时, 向这些终端下发所有当前有效的所述组呼通知信息。
本发明实施例提供一种呼叫控制装置, 包括:
存储单元, 用于缓存组呼通知信息;
检测单元, 检测当前小区内是否有终端进行 GPRS 业务, 检测是否有 正在使用 GPRS业务并新进入小区的终端;
发送单元, 用于发送所述组呼通知信息给相应终端;
所述发送单元在所述检测单元确定有终端进行 GPRS业务和 /或有正在 使用 GPRS 业务并新进入小区的终端时, 将存储单元緩存的组呼通知信息 发送给相应终端。
本发明实施例提供一种通信终端, 包括:
接收单元, 用于接收組呼通知信息;
检测单元, 检测接收单元所接收的组呼通知信息, 并判断该终端是否 属于该组呼成员;
处理单元, 上报该组呼通知信息的响应消息, 和 /或, 提示用户加入组 呼, 和 /或, 控制 GPRS业务;
所述处理单元根据所述检测单元的检测结果进行相应操作:
如果检测单元确定所述终端为所述组呼成员, 则所述处理单元挂起正 在进行的 GPRS业务, 并当所述接收单元接收的组呼通知信息中不包括组 呼信道描述, 则处理单元上报该组呼通知信息的响应消息; 如果所述接收 单元接收的组呼通知信息中包括组呼信道描述, 则所述处理单元提示用户 力口入组呼;
如果检测单元确定所述终端不为所述组呼成员, 则所述处理单元忽略 所述组呼通知信息。
本发明实施例提供一种用于实现组呼的网络系统, 包括: 基站子系统、 分组控制装置和通信终端,
所述分组控制装置用于緩存所接收的组呼通知信息, 判断当前小区内 是否有正在进行 GPRS业务的终端, 并在确定有终端进行 GPRS业务和 /或 有正在使用 GPRS业务并新进入小区的终端时发送所述组呼通知信息给相 应终端;
在需要通知终端加入组呼时, 基站子系统的基站控制器向该基站子系 统的分组控制装置发送包括组呼通知信息的消息;
所述分组控制装置緩存收到所述消息中的所述组呼通知信息, 并判断 当前小区内是否有正在进行 GPRS 业务的所述终端, 如果有, 则向这些终 端下发所述组呼通知信息;
所述分组控制装置在检测到有正在使用 GPRS 业务并新进入小区的终 端时, 向这些终端下发所有緩存的所述组呼通知信息。 本发明实施例提供一种基站控制器, 包括:
存储单元, 用于緩存组呼通知信息;
检测单元, 检测当前小区内是否有终端进行 GPRS 业务, 检测是否有 正在使用 GPRS业务并新进入小区的终端;
发送单元, 用于发送所述组呼通知信息给相应终端;
所述发送单元在所述检测单元确定有终端进行 GPRS业务和 /或有正在 使用 GPRS 业务并新进入小区的终端时, 将存储单元緩存的组呼通知信息 发送给相应终端。
本发明实施例提供的技术方案中, BSS 需要通知终端加入组呼时, 如 果该 BSS支持 GPRS, 则向正在进行 GPRS业务的终端下发对应的组呼通 知信息, 从用户使用的角度来说, 使得不能同时进行电路交换业务和分组 交换业务的终端, 能够在进行 GPRS业务的同时, 收到该终端所属的组呼, 从而可以提升用户体验。 附图说明
图 1是本发明第一实施例的 GPRS业务中的终端组呼控制方法流程图; 图 2是本发明第二实施例的 GPRS业务中的终端组呼控制方法流程图; 图 3是本发明笫三实施例的 GPRS业务中的终端组呼控制方法流程图; 图 4是本发明第四实施例的 GPRS业务中的终端组呼控制方法流程图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本 发明作进一步地详细描述。
本发明实施例中, 通过需要下发组呼通知时, 如果终端正在进行 GPRS 业务而无法接收电路域的组呼通知, 则由 BSS在分组域中向这些终端下发 組呼通知, 终端才艮据该通知加入到当前组呼中。
由于终端的类型不同, 在进行 GPRS 业务时, 对组呼业务的支持程度 不同。 具体地说, 支持 GPRS的终端分三类:
I .可同时接入 GPRS网络和 OSM网络, 并可同时进行分组交换业务 和电路交换业务; II .可同时接入 GPRS网络和 GSM网絡, 但不能同时进行电路交换和 分组交换业务;
III.不能同时接入 GPRS网络和 GSM网络, 分组交换业务和电路交换 业务, 仅能选择其中一种业务, 未被选中业务的状态是断开状态, 不能实 现连接。
第一类终端本身就可以支持在使用 GPRS 业务的同时接收组呼通知, 所以不属于本发明技术方案的应用范围; 而后两类终端因为不能同时在电 路域和分组域开展业务, 属于本发明技术方案的应用范围。
本发明第一实施例的 GPRS业务中的终端组呼控制方法, 如图 1所示。 该终端 B能够同时接入 GPRS网络和 GSM网络,但不能同时进行电路交换 和分组交换业务, 此时, 该终端 B正在进行 GPRS业务。 而终端 C不能同 时接入 GPRS网络和 GSM网络,在同一时刻仅能选择 GPRS业务或电路交 换业务, 而未被选择的业务处于断开状态。假定此时, 终端 C在进行 GPRS 业务。 终端 B和终端 C属于同一个组呼组。 其中, 终端与 BSS之间通过 Um口交互信息, BSC与 MSC之间为 A口。 GPRS业务中的终端组呼控制 方法的步骤如下:
步骤 101 , 当需要通知终端 B加入组呼时, MSC向组呼区域的小区的 BSS发送语音组呼业务( VGCS, Voice Group Call Service ) /语音广播业务 ( VBS, Voice Broadcast Service )指配请求。
步骤 102, BSS收到 VGCS/VBS指配请求消息后, 激活目标小区的组 呼相关信道。
步骤 103 , BSS通过指配响应消息向 MSC返回 VGCS/VBS的指配结果。 步驟 104, BSS检测到当前小区内正在使用 GPRS业务的终端 B, 向终 端 B 下发组呼通知信息 ( Notification )。 为了保证终端 B 能够收到该 Notification, BSS可以采用连续发送多次的策略, 当然, 还可以采用其它的 策略达到同样的目的。
步骤 105, 终端 B收到 Notification后, 判断自身是否属于该组呼成员, 如果属于该组呼成员, 则进入步驟 106; 如果不属于该组呼成员, 则忽略组 呼通知信息。 步骤 106,如果终端 B为该组呼成员, 则挂起终端 B正在进行的 GPRS 业务, 并判断组呼通知信息中是否包含组呼信道描述, 如果不包含, 则终 端 B上报该组呼通知信息的响应消息; 如果包含, 则终端 B开始振铃, 提 示用户加入组呼。
步骤 107, 在该组呼有效期间, 终端 C进入组呼区域中, 并且在该小区 中进行 GRPS业务。 当 BSS检测到有正在使用通用分组无线业务并新进入 该小区的终端 C时, 向终端 C下发所有当前有效的 Notification
步骤 108,如果该终端 C属于这些组呼中某个组呼的成员 ,则通过用户 界面请求用户确认是否断开该终端 C正在进行的 GPRS业务。 如果用户确 认, 则进入步驟 109。
步骤 109,终端 C根据用户选择的确认断开当前的 GPRS网络连接,并 接入 GSM网络, 然后, 判断 Notification中是否包含所属的组呼信道描述, 如果不包含, 则该终端 C上 ^艮该 Notification的响应消息; 如果包含, 则该 终端 C加入所属的组呼。 结束本流程。
本发明第二实施例的 GPRS业务中的终端组呼控制方法, 如图 2所示。 该终端 B能够同时接入 GPRS网络和 GSM网络,但不能同时进行电路交换 和分组交换业务,此时,该终端 B正在进行 GPRS业务。其中,终端与 BTS 之间通过 Um口交互信息, BTS通过第二 A接口 ( ABIS ) 与 BSC交互信 息, BSC与 PCU之间为 PB口, BSC与 MSC之间为 A口。 所述终端组呼 控制方法的步骤如下:
步骤 201, 当需要通知终端 B加入组呼时, MSC向组呼区域的小区的 BSC发送 VGCS/ VBS指配请求。
步骤 202, BSC根据 VGCS/VBS指配请求,向 BTS发送信道激活消息, 来激活目标小区组呼信道。
步驟 203, BTS根据信道激活消息, 激活目标小区的组呼信道后, 返回 信道激活确认消息。
步驟 204, BSC收到信道激活确认消息后, 通过指配响应消息向 MSC 返回 VGCS/VBS的指配结果。
步骤 205, BSC向 BTS发送启动组呼的通知消息。 步驟 206, BTS将启动组呼的通知消息通过 NCH/FACCH发送给终端 B。 步驟 207, 此时 BSC进行判决, 如果该小区支持 GPRS, 则向 PCU发 送包含 Notification的消息, 例如, 称为 BSC— PCU— NOTIF— START_REQ消 息,所包舍的 Notification具体参见公知技术文献《081\40408—780, 9.1.21a》。
步驟 208 , PCU 正确收到 BSC 发来的消息后, 将收到的
BSC— PCU—NOTIF— START— REQ消息中的 Notification提取出来并緩存, 并 返回相应的响应消息,例如,称为 BSC_PCU— NOTIF_START— REQ_ACK消 '¾·<.
步骤 209, PCU判断当前小区内是否有正在进行 GPRS业务的终端 B, 如果有, 则通过 GPRS业务相关信道向终端 B下发该 Notification, 例如, 通过分组随路控制信道(PACCH, Packet Associate Control Channel ) 下发, 其中, BSS对此 Notification透传, 不#文任何处理。 另夕卜, 为了保证终端 B 能够收到该 Notification, PCU可以采用连续发送多次的策略, 当然, 还可 以采用其它的策略达到同样的目的。
如果当前该小区中没有正在进行 GPRS业务的终端 B,则不作进一步的 处理。
此后, 当 PCU检测到该小区有新的终端进行 GPRS业务时, PCU将缓 存的所有的 Notification通过 GPRS相关信道发送给这些终端。
另外, 如果终端 A可同时接入 GPRS网络和 GSM网络,并可以同时进 行分组交换业务和电路交换业务, 则终端 A忽略组呼通知信息。
步骤 210, 终端 B收到 Notification后, 判断自身是否属于该组呼成员, 如果属于该组呼成员, 则进入步驟 211; 如果不属于该组呼成员, 则忽略组 呼通知信息。
步驟 211 , 如果终端 B为该組呼成员, 则挂起终端 B正在进行的 GPRS 业务, 并判断组呼通知信息中是否包含组呼信道描述, 如果不包含, 则终 端 B上报该组呼通知信息的响应消息; 如果包含, 则终端 B开始振铃, 提 示用户加入组呼。
本发明第三实施例的 GPRS业务中的终端组呼控制方法, 如图 3所示。 该终端 C不能同时接入 GPRS网络和 GSM网络,在同一时刻仅能选择 GPRS 业务或电路交换业务, 而未被选择的业务处于断开状态。 此时, 该终端 C 正在进行 GPRS业务。其中,各交互接口与上述实施方式相同: 终端与 BTS 之间通过 Um口交互信息, BTS通过 ABIS口与 BSC交互信息, BSC与 PCU 之间为 PB口, BSC与 MSC之间为 A口, 另外, 终端与用户之间通过用户 界面交互信息。 该终端组呼控制方法步驟如下:
步骤 301到步骤 310分别与步骤 201到步骤 210类似, 此处不再赘述。 步驟 311,如果该终端 C为組呼成员,则通过用户界面请求用户确认是 否断开该终端 C正在进行的 GPRS业务。
步骤 312,终端 C根据用户选择的确认或拒绝来执行操作。如果用户确 认, 则该终端 C断开当前的 GPRS网络连接, 并接入 GSM网络, 然后, 判 断 Notification中是否包含组呼信道描述, 如果不包含, 则该终端 C上报该 Notification的响应消息; 如果包含, 则该终端 C加入组呼。
如果用户拒绝, 则同样忽略该组呼通知信息。
本发明第四实施例的 GPRS业务中的终端组呼控制方法, 如图 4所示。 当需要停止组呼时, 释放网络侧资源。 其中, 也与上述实施方式相同: 终 端与 BTS之间通过 Um口交互信息, BTS通过 ABIS口与 BSC交互信息, BSC与 PCU之间为 PB口, BSC与 MSC之间为 A口。 该终端组呼控制方 法步骤如下:
步骤 401 , 当需要停止组呼时, MSC 向 BSC 发送清除组呼资源 ( CLEAR— CMD ) 的通知。
步驟 402, BSC返回清除组呼资源的响应消息 ( CLEAR— CMP )。
步骤 403 , BSC通过 ABIS口向 BTS发送停止通知消息。
步骤 404, BTS根据收到的通知消息, 同样通过 NCH/FACCH向终端 发送通知。
步驟 405, BSC进行判决, 如果需要停止组呼的小区支持 GPRS业务, 则向 PCU发送停止该组呼的消息, 例如,
称为 BSC— PCU—NOTIF—STOP— REQ, 其中 包含组呼停止信息 ( Notification指示), 同样, 具体参见公知技术《GSM 0408— 780, 9.1.21a》。
步骤 406, PCU正确收到 BSC— PCU—NOTIF— STOP— REQ消息后, 返回 确认的响应消息 ( BSC— PCU—NOTIF— STOP— REQ_ACK:)。 然后, 根据 BSC_PCU_NOTIF_STOP_REQ消息中的 Notification指示, 将 PCU所緩存 的该 Notification信息删除。
步骤 407, BSC向 BTS发送反激活慢速随路控制信道( Slow Associated Control Channel, 简称" SACCH" ) 的命令。
步骤 408 , BSC还向 BTS发送释放请求( REL REQ )。
步骤 409, BTS返回释放确认信息。
步骤 410, BSC向 BTS发送射频(Radio Frequency, 简称" RF,)信道 释放命令(RF—CHAN— REL )。
步骤 411 , BTS返回 RF信道幹放确认消息
( RF_CHAN_REL_CONF ), 完成该组呼资源的释放。
在第二和第三实施例中,分组控制单元 PCU可以作为 BSC的一个逻辑 单元存在, 换句话说, 在物理上可以只表现为有一个 BSC, PCU的功能可 以作为 BSC功能的一部分。甚至在某些系统中, 不存在名叫 PCU的逻辑单 元, 所称的 PCU的功能就是由 BSC实现的, 可以理解, 这种改变并没有实 质性的区别, 只要将前述第二、三实施例中的 BSC与 PCU作为一个整体考 虑就可以了, 也就是说 BSC与 PCU作为一个整体与其它设备交互, BSC 与 PCU之间的交互作为内部交互。
因此, BSS需要通知终端加入组呼时, 如果该 BSS支持 GPRS, 则向 正在进行 GPRS 业务的终端下发对应的组呼通知信息, 从用户使用的角度 来说, 用户不用担心使用 GPRS业务的同时不能接到组呼呼叫, 可以提升 用户体验。 当结束组呼时, 也可以及时地释放网络侧为该组呼所分配的资 源。
虽然通过参照本发明的某些优选实施方式, 已经对本发明进行了图示 和描述, 但本领域的普通技术人员应该明白, 可以在形式上和细节上对其 作各种改变, 而不偏离本发明的精神和范围。

Claims

权 利 要 求
1. 一种通用分组无线业务中的终端组呼控制方法, 其特征在于, 包括 以下步骤:
基站子系统需要通知终端加入组呼时, 如果该基站子系统支持通用分 组无线业务 GPRS,则向正在进行所述 GPRS业务的终端下发组呼通知信息。
2. 才艮据权利要求 1所述的终端组呼控制方法, 其特征在于, 包括以下 步骤:
所述基站子系统需要通知终端加入组呼时, 如果该基站子系统支持 GPRS业务,则该基站子系统的基站控制器向该基站子系统的分组控制单元 发送包括组呼通知信息的第一消息;
所述分组控制单元收到所述第一消息后, 緩存所述组呼通知信息, 如 果当前小区内有正在进行 GPRS业务的所述终端, 则向这些终端下发所述 组呼通知信息;
所述分组控制单元在检测到有正在使用 GPRS 业务并新进入小区的终 端时, 向这些终端下发所有缓存的所述组呼通知信息。
3. 根据权利要求 1所述的终端组呼控制方法, 其特征在于, 还包括以 下步骤:
如果所述终端可同时接入 GPRS业务网络和全球移动通信网络, 但不 能同时进行电路交换和分组交换业务, 则该终端收到所述组呼通知信息后, 判断是否属于该组呼成员;
如果所述终端为所述组呼成员 , 则该终端挂起正在进行的 GPRS业务, 并判断所述组呼通知信息中是否包括组呼信道描述, 如果不包括, 则该终 端上报该组呼通知信息的响应消息; 如果包括, 则该终端开始振铃, 提示 用户加入组呼;
如果所述终端不为所述组呼成员, 则忽略所述组呼通知信息。
4. 根据权利要求 1所述的终端组呼控制方法, 其特征在于, 还包括以 下步骤:
如果所述终端不能同时接入 GPRS 业务网络和全球移动通信网络, 在 同一时刻仅能选择分组交换业务或电路交换业务之一, 则该终端收到所述 组呼通知信息后, 判断是否属于该组呼成员;
如果所述终端为所述组呼成员, 则该终端断开正在进行的 GPRS业务, 并接入全球移动通信网絡, 然后, 判断所述组呼通知信息中是否包括组呼 信道描述, 如果不包括, 则该终端上报该组呼通知信息的响应消息; 如果 包括, 则该终端开始振铃, 提示用户加入组呼;
如果所述终端不为所述组呼成员, 则忽略所述组呼通知信息。
5. 根据权利要求 4所述的终端组呼控制方法, 其特征在于, 还包括以 下步骤:
所述终端需要断开正在进行的 GPRS业务时, 请求用户确认, 若该用 户确认, 则该终端执行该断开操作; 若该用户拒绝, 则该终端忽略所述組 呼通知信息。
6. 根据权利要求 1所述的终端组呼控制方法, 其特征在于, 还包括以 下步骤:
如果所述终端能够同时接入 GPRS业务网络和全球移动通信网络, 并 能够同时进行分组交换业务和电路交换业务, 则该终端忽略所述组呼通知
'ίΰ·息。
7. 根据权利要求 1至 6中任一项所述的终端组呼控制方法, 其特征在 于, 还包括以下步骤:
所述基站子系统检测到有正在使用 GPRS业务并新进入小区的终端时, 向这些终端下发所有当前有效的所述组呼通知信息。
8. 根据权利要求 7中任一项所述的终端组呼控制方法, 其特征在于, 所述组呼通知信息通过 GPRS业务相关信道下发给所述终端。
9.根据权利要求 8所述的终端组呼控制方法,其特征在于,所述 GPRS 业务相关信道为分组随路控制信道。
10. 根据权利要求 1 所述的终端组呼控制方法, 其特征在于, 进一步 包括以下步骤:
所述基站控制器需要停止组呼时, 向所述分组控制单元发送包含组呼 停止信息的第二消息;
所述分组控制单元才艮据收到的所述第二消息, 删除緩存的所述组呼通 知信息。
11、 一种呼叫控制装置, 其特征在于, 包括:
存储单元, 用于緩存组呼通知信息;
检测单元, 检测当前小区内是否有终端进行 GPRS 业务, 检测是否有 正在使用 GPRS业务并新进入小区的终端;
发送单元, 用于发送所述组呼通知信息给相应终端;
所述发送单元在所述检测单元确定有终端进行 GPRS业务和 /或有正在 使用 GPRS业务并新进入小区的终端时, 将存储单元緩存的组呼通知信息 发送给相应终端。
12、 一种通信终端, 其特征在于, 包括:
接收单元, 用于接收组呼通知信息;
检测单元, 检测接收单元所接收的组呼通知信息, 并判断该终端是否 属于该组呼成员;
处理单元, 上艮该組呼通知信息的响应消息, 和 /或, 提示用户加入组 呼, 和 /或, 控制 GPRS业务;
所述处理单元才艮据所述检测单元的检测结果进行相应操作:
如果检测单元确定所述终端为所述组呼成员, 则所述处理单元挂起正 在进行的 GPRS 业务, 并当所述接收单元接收的组呼通知信息中不包括組 呼信道描述, 则处理单元上报该组呼通知信息的响应消息; 如果所述接收 单元接收的组呼通知信息中包括组呼信道描述, 则所述处理单元提示用户 加入组呼;
如果检测单元确定所述终端不为所述组呼成员 , 则所述处理单元忽略 所述组呼通知信息。
13、 一种用于实现组呼的网络系统, 包括: 基站子系统、 分组控制装 置和通信终端, 其特征在于,
所述分组控制装置用于緩存所接收的组呼通知信息, 判断当前小区内 是否有正在进行 GPRS业务的终端, 并在确定有终端进行 GPRS业务和 /或 有正在使用 GPRS 业务并新进入小区的终端时发送所述组呼通知信息给相 应终端;
在需要通知终端加入组呼时, 基站子系统的基站控制器向该基站子系 统的分组控制装置发送包括组呼通知信息的消息;
所述分组控制装置緩存收到所述消息中的所述组呼通知信息, 并判断 当前小区内是否有正在进行 GPRS业务的所述终端, 如果有, 则向这些终 端下发所述组呼通知信息;
所述分组控制装置在检测到有正在使用 GPRS业务并新进入小区的终 端时, 向这些终端下发所有缓存的所述组呼通知信息。
14. 根据权利要求 13所述的网络系统, 其特征在于, 所述通信终端根 据收到的所述组呼通知信息判断是否属于该组呼成员;
如果所述通信终端为所述组呼成员, 则该终端挂起正在进行的 GPRS 业务, 并判断所述组呼通知信息中是否包括组呼信道描述, 如果不包括, 则该通信终端上报该组呼通知信息的响应消息; 如果包括, 则该终端开始 振铃, 提示用户加入组呼;
如果所述通信终端不为所述組呼成员, 则忽略所述组呼通知信息。
15. 一种基站控制器, 其特征在于, 包括:
存储单元, 用于缓存组呼通知信息;
检测单元, 检测当前小区内是否有终端进行 GPRS业务, 检测是否有 正在使用 GPRS业务并新进入小区的终端;
发送单元, 用于发送所述组呼通知信息给相应终端;
所述发送单元在所述检测单元确定有终端进行 GPRS业务和 /或有正在 使用 GPRS 业务并新进入小区的终端时, 将存储单元緩存的组呼通知信息 发送给相应终端。
PCT/CN2007/001166 2006-04-11 2007-04-11 Procédé de contrôle d'appel de groupe de terminal dans le service gprs et appareil correspondant WO2007115507A1 (fr)

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EP1351529A1 (fr) * 2002-03-25 2003-10-08 Sagem SA Méthode d'établissement d'un appel de groupe dans un système de télécommunication de type GPRS
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