WO2008017198A1 - Ptt communication system and method for sending communication information in ptt communication system - Google Patents

Ptt communication system and method for sending communication information in ptt communication system Download PDF

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Publication number
WO2008017198A1
WO2008017198A1 PCT/CN2006/001865 CN2006001865W WO2008017198A1 WO 2008017198 A1 WO2008017198 A1 WO 2008017198A1 CN 2006001865 W CN2006001865 W CN 2006001865W WO 2008017198 A1 WO2008017198 A1 WO 2008017198A1
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Prior art keywords
cluster
communication system
communication
cluster scheduling
communication information
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English (en)
French (fr)
Inventor
Zhigang Wen
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ZTE Corp
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ZTE Corp
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Priority to CNB2006800013433A priority Critical patent/CN100471294C/zh
Priority to PCT/CN2006/001865 priority patent/WO2008017198A1/zh
Publication of WO2008017198A1 publication Critical patent/WO2008017198A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H04W76/45—Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services

Definitions

  • the present invention relates to a trunking communication technology, and in particular, to a method of transmitting communication information in a trunking communication system and a trunking communication system.
  • a trunk communication system based on mobile communication combines a cellular communication technology with a dedicated dispatch communication system, and a communication system using a half-duplex communication method can realize fast connection and support group call (ie, one-to-many call) the way).
  • group call is an important service feature in a cluster system.
  • a large-capacity group can be provided in a small range (a group can contain hundreds or thousands of user terminals, and These user terminals are all supported by group calls under a small range of sectors. Allows a single user to talk to all users in the group at the same time. The users in the group, except the ones who are talking, must be listening.
  • 2 is a flow chart of voice forwarding of a cluster communication system cluster call in the prior art. As shown in Figure 2, MS1 is the user and other users are listening to the user. MS1 starts to talk and sends the voice message to BTS1. BTS1 forwards the voice message to BSCl/PDCl.
  • the BTS1 sends a voice frame to the user MS2 in the group without transmitting to the user MS1; the BTS2 sends a voice frame to the user MS4 in the group, and the BTS3 sends a voice frame to the user MS3 in the group.
  • the voice is sent by the user to the base station, and then sent to the cluster scheduling server through the cluster scheduling room, and then the cluster scheduling server distributes to the cluster client where the user is located, if The cluster scheduling client and the cluster scheduling server are connected by multiple routers, which will result in a relatively large voice delay.
  • packet loss may also occur.
  • a trunking communication system including a cluster scheduling client, a cluster scheduling server, and a cluster terminal.
  • the cluster scheduling client is configured to send communication information received from one cluster terminal to other cluster terminals other than the cluster terminal that communicates with the communication terminal, and send the communication information to the cluster scheduling server; To dispatch communication information to other cluster scheduling clients than the cluster scheduling client that communicates with the cluster terminal that transmits the communication information.
  • the trunking communication system according to the present invention further includes a base station system, and the cluster terminal transmits the communication information to the cluster scheduling client through the base station system.
  • the base station system according to the present invention includes a base station controller and a base transceiver station, and the cluster scheduling client is externally or built in the base station controller.
  • the group scheduling client passes between the cluster scheduling server and the cluster scheduling server.
  • the AlOd/Alld interface communicates.
  • the base station system communicates with the cluster scheduling client through the A8d/A9d interface.
  • the communication information includes voice information.
  • the above trunking communication system is a CDMA system trunking communication system.
  • a method of transmitting communication information in a trunked communication system includes the following steps: The cluster scheduling client sends the communication information received from the cluster terminal to other cluster terminals other than the cluster terminal that transmits the communication information, and transmits the communication information to the cluster scheduling server; and the cluster scheduling The server transmits the communication information to other cluster scheduling clients than the cluster scheduling client that communicates with the cluster terminal that transmits the communication information.
  • the method for transmitting communication information in a trunking communication system according to the present invention further includes the following steps: when the cluster call setup is completed and the cluster communication is started, the cluster terminal transmits communication information to the cluster scheduling client through the base station system. end.
  • FIG. 1 is a schematic diagram of a network structure of a trunking communication system according to the present invention
  • FIG. 2 is a flow chart of a cluster communication system trunk call voice forwarding in the prior art
  • FIG. 1 is a schematic diagram of a network structure of a trunking communication system according to the present invention
  • FIG. 2 is a flow chart of a cluster communication system trunk call voice forwarding in the prior art
  • FIG. 1 is a schematic diagram of a network structure of a trunking communication system according to the present invention
  • FIG. 2 is a flow chart of a cluster communication system trunk call voice forwarding in the prior art
  • FIG. 1 is a schematic diagram of a network structure of a trunking communication system according to the present invention
  • FIG. 2 is a flow chart of a cluster communication system trunk call voice forwarding in the prior art
  • FIG. 1 is a schematic diagram of a network structure of a trunking communication system according to the present invention
  • FIG. 2 is a flow chart of a cluster communication system trunk call voice forwarding
  • FIG. 3 is a flow chart according to an embodiment of the present invention.
  • a flowchart of a method of transmitting communication information in a trunking communication system ;
  • FIG. 4 is a schematic diagram of cluster call voice forwarding of a trunking communication system according to an embodiment of the present invention.
  • the trunking communication system 100 includes a cluster scheduling server 108 (PTT Dispatch Server, PDS), a cluster scheduling client 106 (PTT Dispatch Client, Puls PDC), and a base station system 104 (Base Station).
  • BS cluster scheduling server
  • PTT Dispatch Client PTT Dispatch Client
  • PDC base station system
  • BS cluster scheduling server
  • PTT Dispatch Client Mobile Station
  • PTT Home Register PTT Home Register
  • the base station system 104 includes a Base Station Controller (BSC) and a Base-Station Transceiver System (BTS).
  • BSC Base Station Controller
  • BTS Base-Station Transceiver System
  • the cluster terminal 102 communicates with the base station system 104 through an air interface (the air interface), and the base station system 104 and the cluster scheduling client 106 communicate through the A8d/A9d interface, and the cluster scheduling The client 106 and the cluster scheduling server 108 communicate via the A10d/Al ld interface. Further, the cluster scheduling server 108 and the cluster home register 110 storing the customer information communicate via the RADIUS protocol.
  • the present invention exemplifies a CDMA system trunking communication system
  • the communication information may be, for example, a voice message, and of course, other communication data.
  • the reverse voice packets are generally sent to the cluster scheduling server through the base station system and the cluster scheduling client, and then distributed by the cluster scheduling server.
  • the cluster scheduling client where the cluster terminal (ie, the user) that transmits the voice information is located distributes the group user belonging to the group, and the cluster scheduling server dispatches the cluster under the client to the other cluster.
  • the terminal performs voice distribution.
  • the trunking communication system 100 of the present invention and the method of transmitting the voice information therein will be further described below with reference to FIGS. 3 and 4.
  • 3 is a flow diagram of a method of transmitting communication information in a trunking communication system 100, in accordance with one embodiment of the present invention. As shown in FIG.
  • the method for transmitting a message in a trunking communication system includes the following steps: Step - 8302, the cluster call setup is completed, the trunk call starts; step S304, the voice information of the call is sent to the cluster scheduling client by the base station; Step S306, the cluster scheduling client dispatches all users under the client to the cluster (cluster terminal) Sending the voice information; Step S308, the cluster scheduling client sends the voice information to the cluster scheduling server; Step S310, the cluster scheduling server sends the voice information to the cluster scheduling client other than the cluster scheduling client where the user is located.
  • the users in the general group are all under the same cluster scheduling client. Therefore, the cluster scheduling client that the user is located directly forwards the voice to the users under the cluster scheduling client.
  • the scheduling server is only responsible for distributing voice packets of users in other cluster scheduling clients, which effectively reduces the voice delay and saves the forward network bandwidth between the cluster scheduling server and the cluster scheduling client.
  • 4 is a schematic diagram of a cluster communication system cluster called voice forwarding according to an embodiment of the present invention.
  • MS1, MS2, MS3, and MS4 belong to the same group.
  • MS1 and MS2 are within the coverage of BTS1
  • MS3 is within the coverage of BTS3
  • MS4 is within the coverage of BTS2
  • PDC1 and PDC2 are connected to the PDS through the router and the Internet.
  • PDC1 and PDC2 may be externally placed in BSC1 and BSC2, respectively, or may be built in BSC1 and BSC2. In the present embodiment, PDC1 and PDC2 are built in BSC1 and BSC2, respectively.
  • the process of forwarding data in the trunking communication system 100 of the present invention shown in FIG. 4 is exemplified by a group call, which will be described in detail below.
  • the cluster call setup in the trunking communication system 100 is completed.
  • the cluster terminal MS1 is the user, the other user is the listening user, the MS 1 starts to talk, and the voice message is sent to the BTS 1 (S401:).
  • BTS1 forwards the voice message to BSC1/PDC1 (S402).
  • PDC1 After receiving the voice message, PDC1 is divided into three parallel steps S403, S405 and S407 in this embodiment. That is, PDC1 forwards the voice message to BTS 1 (S403); PDC1 forwards the voice message to BTS2 (S405); PDC1 sends the voice message to PDS (S407). Thereafter, the BTS 1 transmits a speech frame to the intra-group user MS2, and since the MS 1 is a speaking user, the BTS 1 does not transmit a speech frame to the MS 1 (S404). The BTS 2 transmits a speech frame to the user MS4 in the group (S406).
  • the PDS After receiving the voice packet, the PDS forwards the voice packet to the PDC2, but does not forward the voice packet to the PDC1 (S408).
  • the PDC 2 forwards the voice message to the BTS 3 (S409), and the BTS3 transmits the voice frame to the MS3 (S410).
  • PDC1 is connected to the PDS through the router and the Internet. When the network between the PDC1 and the PDS is congested, the network may lose the text or the voice delay may be delayed. The voice message is directly forwarded through the PDC1. This can effectively improve voice quality and save forward network bandwidth. And in a commercial cluster network, members of a group are distributed in the same W
  • the present invention therefore has great commercial value for improving voice quality in trunk communications.
  • the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalents, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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

Description

集群通信系统和集群通信系统中 发送通信信息的方法
技术领域 本发明涉及集群通信技术， 尤其涉及一种集群通信系统和 集群通信系统中发送通信信息的方法。 背景技术 基于移动通信的集群通信系统是将蜂窝通信技术与专用调 度通信系统结合在一起， 采用半双工通信方式的通信系统， 可 以实现快速的接续， 支持群组呼叫 （即一对多的呼叫方式）。 这 样的集群通信系统可广泛应用于对指挥、 调度功能要求较高的 企事业、 公安、 警察以及军队等部门。 群组呼叫是集群系统中重要的业务特征， 通过在扇区下共 享前反向业务信道的方法， 提供对小范围内大容量群组 （一个 群組可包含成百上千的用户终端 , 且这些用户终端都位于小范 围的扇区下） 的群組呼叫的支持。 允许单用户与组内所有用户 同时通话， 组内用户， 除了正在说话的以外， 其他人必须都在 收听。 图 2是现有技术中的集群通信系統集群呼叫的语音转发流 程图。 如图 2所示， MS1为说用户， 其他用户为听用户， MS1开 始讲话， 将语音艮文发送给 BTS1 , BTS1 把语音报文转发给 BSCl/PDCl , PDC1接收到语音报文后， 转发给 PDS , PDS接 收到语音^ =艮文后 ,向 PDC1和 PDC2转发语音报文。然后， JPDC1 向 BTS1、 BTS2转发语音报文， PDC2向 BTS3转发语音艮文。 其中， BTS1向组内用户 MS2发送语音帧， 而不向说用户 MS1 发送； BTS2向组内用户 MS4发送语音帧， BTS3 向组内用户 MS3发送语音帧。 由此可见， 在现有的集群通信中， 语音由说用户发送给基 站， 再通过集群调度客房端发送给集群调度艮务器， 再由集群 调度服务器向用户所处的集群客户端分发， 如果集群调度客户 端与集群调度服务器之间通过多个路由器相连， 会导致比较大 的语音时延。 而且， 当集群调度客户端与集群调度服务器之间 的网络出现拥塞时还可能导致报文丢失。 发明内容 鉴于以上技术问题， 并且由于在实际的集群应用中， 一个 组的成员一般分布在同一个集群调度端下， 本发明的主要目的 在于通过提供一种集群通信系统和在集群通信系统中发送通信 信息的方法， 克月艮了由于现有技术中的局限和缺点所造成的问 题。 为了实现上述目的， 才艮据本发明的一个方面， 提供了一种 集群通信系统， 包括集群调度客户端、 集群调度服务器、 以及 集群终端。 其中， 集群调度客户端配置为将从一个集群终端接 收到的通信信息发送到与其通信的除发送通信信息的集群终端 以外的其他集群终端， 并将通信信息发送到集群调度服务器； 集群调度服务器配置为将通信信息发送到除与发送通信信息的 集群终端通信的集群调度客户端以外的其他集群调度客户端。 另外， 根据本发明的集群通信系统还包括基站系统， 集群 终端通过基站系统将通信信息发送到集群调度客户端。 根据本发明的基站系统包括基站控制器和基站收发信机， 集群调度客户端外置于或内置于所述基站控制器。 优选的是， 群调度客户端与所述集群调度服务器之间通过
AlOd/Alld接口进行通信。 基站系统与集群调度客户端之间通 过 A8d/A9d接口进行通信。 此外， 在根据本发明的集群通信系统中， 优选地， 通信信 息包括语音信息。上述的集群通信系统为 CDMA制式集群通信 系统。
4艮据本发明的另一方面， 提供了一种在集群通信系统中发 送通信信息的方法。 该方法包括以下步 ： 集群调度客户端将 从集群终端接收到的通信信息发送到与其通信的除发送通信信 息的集群终端以外的其他集群终端， 并将通信信息发送到集群 调度服务器； 以及集群调度服务器将通信信息发送到除与发送 通信信息的集群终端通信的集群调度客户端以外的其他集群调 度客户端。 优选地， 根据本发明的在集群通信系统中发送通信信息的 方法还包括以下步聚： 集群呼叫建立完成并开始集群通 4言时， 集群终端通过基站系统将通信信息发送到所述集群调度客户 端。 本发明通过发送通信信息的集群终端所在的集群调度客户 端直接转发通信信息、 并且集群调度艮务器只负责分发其他集 群调度客户端下集群终端的通信信息， 可以减少通信时延， 提 高通信质量， 并能节省集群调度服务器与集群调度客户之间的 前向网络带宽。 附图说明 附图用来提供对本发明的进一步理解， 并且构成说明书的 一部分， 与本发明的实施例一起用于解释本发明， 并不构成对 本发明的限制。 在附图中： 图 1是才 据本发明的集群通信系统的网络结构示意图； 图 2是现有技术中的集群通信系统集群呼叫语音转发流程 图； 图 3是根据本发明的一个实施例的集群通信系统中发送通 信信息的方法的流程图； 以及 图 4是根据本发明的一个实施例的集群通信系统集群呼叫 语音转发示意图。 具体实施方式
以下结合附图对本发明的优选实施例进行说明，应当理解， 此处所描述的优选实施例仅用于说明和解释本发明， 并不用于 限定本发明。 图 1是本发明的一个实施例的基于 CDMA制式集群通信系 统的网络结构图。 如图 1所示， 集群通信系统 100包括集群调度服务器 108 (PTT Dispatch Server, 筒称： PDS)、 集群调度客户端 106 ( PTT Dispatch Client, 筒 尔 PDC )、 基站系统 104 ( Base Station, 筒 称 BS )、 集群终端 102 ( Mobile Station, 简称 MS , 也称为移动 台）、 集群归属寄存器 110 ( PTT Home Register, 简称 PHR )。 其中， 基站系统 104包括基站控制器 （ Base Station Controller, 筒称 BSC ) 和基站收发信机 ( Base-station Transceiver System, 简称 BTS )。 在本实施例的集群通信系统中， 集群终端 102通过空中接 口 （筒称空口） 与基站系统 104进行通信， 基站系统 104和集 群调度客户端 106之间通过 A8d/A9d接口进行通信， 而集群调 度客户端 106和集群调度服务器 108之间通过 A10d/Al ld接口 进行通信。 此外， 集群调度服务器 108和存储客户信息的集群 归属寄存器 110之间通过 RADIUS协议进行通信。 虽然本发明中列举了的是 CDMA制式的集群通信系统，但 是， 本领域的技术人员可以理解， 除了 CDMA制式以外， 本发 明也可以适用于其他不同制式的集群通信系统中。 在本发明的集群通信系统 100中， 采用了一种新的通信信 息的发送方式。 通信信息可以是例如语音^ -文， 当然， 也可以 是其他通信数据。 在传统的集群通讯中， 反向语音报文一般通 过基站系统、 集群调度客户端发送到集群调度服务器， 再由集 群调度服务器集中进行分发。 而在本发明中， 由发送语音信息 的集群终端 （即， 说用户 ) 所在的集群调度客户端分发其属的 群组用户， 而由集群调度月艮务器向其他集群调度客户端下的集 群终端进行语音分发。 以下结合图 3和图 4对本发明的集群通信系统 100和其中 的语音信息的发送方法作进一步的说明。 图 3是根据本发明的一个实施例的集群通信系统 100中发 送通信信息的方法的流程图。 如图 3所示， 在集群通信系统中 发送通 ^言息的方法包括以下步骤： 步 - 8302, 集群呼叫建立完成， 集群通话开始； 步骤 S304,通话的语音信息通过基站发送到集群调度客户 端； 步骤 S306, 集群调度客户端向本集群调度客户端下所有的 用户 （集群终端）发送语音信息； 步骤 S308, 集群调度客户端向集群调度服务器发送语音信 息； 步骤 S310，集群调度服务器向说用户所在的集群调度客户 端以外的其他集群调度客户端发送语音信息。 由于在集群通讯中， 一般组内的用户都在同一个集群调度 客户端下， 因此， 通过说用户所在的集群调度客户端直接对本 集群调度客户端下的所有用户进行语音 4艮文转发， 集群调度月良 务器只负责分发其他集群调度客户端下用户的语音报文， 有效 地减少了语音时延， 并节省集群调度服务器与集群调度客户端 之间的前向网给带宽。 图 4是根据本发明的一个实施例的集群通信系统集群 p乎叫 语音转发示意图。 在本实施例中， MS1、 MS2、 MS3和 MS4属于同一个群 组。 口图 4所示， MS1与 MS2在 BTS1 的覆盖范围内， MS3 在 BTS3 的覆盖范围内， MS4在 BTS2的覆盖范围内， PDC1 和 PDC2通过路由器及因特网与 PDS相连。 在图 4的本发明的具体实现中， PDC1 和 PDC2可以分別 是外置于 BSC1和 BSC2 , 也可以内置于 BSC1和 BSC2。 在本 实施例中， PDC1和 PDC2是分别内置于 BSC1和 BSC2的。 图 4所示的本发明的集群通信系统 100中的 4艮文转发流程 是以组呼为例的， 以下对其进行详细说明。 首先， 集群通信系统 100中的集群呼叫建立完成， 其中， 集群终端 MS1为说用户， 其他用户为听用户， MS 1开始讲话， 语音报文发送给 BTS 1 ( S401：)。 接下来， BTS1 把语音报文转发给 BSC1/PDC1 ( S402 )。 PDC1 接收到语音艮文后， 在本实施例中， 分为三个并行步據 S403、 S405 和 S407进行。 即 PDC1 向 BTS 1 转发语音艮文 ( S403 ); PDC1向 BTS2转发语音报文 ( S405 ); PDC1向 PDS 发送语音才艮文 （S407 )。 此后， BTS 1向组内用户 MS2发送语音帧， 由于 MS 1为说 用户， BTS1并不向 MS 1发送语音帧 （S404 )。 BTS2向组内用 户 MS4发送语音帧 （ S406 )。
PDS接收到语音报文后， 向 PDC2转发语音报文， 但是不 向 PDC1转发语音报文 （ S408 )。 PDC2向 BTS3转发语音报文 ( S409 ), 并且 BTS3向 MS3发送语音帧 （S410 )。 从上面的实例可知， PDC1是通过路由器和因特网与 PDS 相连的， 当 PDC1与 PDS之间网络出现拥塞时， 可能会导致网 络的 艮文丢失或者较大语音时延， 而通过 PDC1直接转发语音 报文， 可以有效地提高语音质量， 并节省前向的网络带宽。 而 且在商用的集群网絡中， 一个组的成员一^：都分布在同一个 W
PDC下， 因此本发明对于提高集群通讯中的语音质量有着极大 的商用价值。 以上所述仅为本发明的优选实施例而已， 并不用于限制本 发明， 对于本领域的技术人员来说， 本发明可以有各种更改和 变化。 凡在本发明的精神和原则之内， 所作的任何修改、 等同 替换、 改进等， 均应包含在本发明的保护范围之内。

Claims

权利要求书
1. 一种集群通信系统， 包括集群调度客户端、 集群调度服务 器、 以及集群终端， 其特征在于， 所述集群调度客户端配置为将从集群终端接收到的 通信信息发送到与其通信的除发送所述通信^"息的所述 集群终端以外的其他集群终端，并将所述通信信息发送到 所述集群调度服务器； 以及 所述集群调度服务器配置为将所述通信信息发送到 除与发送所述通信信息的所述集群终端通信的所述集群 调度客户端以外的其他集群调度客户端。
2. 根据权利要求 1所述的集群通信系统， 其特征在于， 还包 括基站系统，所述集群终端通过所述基站系统将所述通信 信息发送到所述集群调度客户端。
3. 才^据权利要求 1所述的集群通信系统， 其特征在于， 所述 集群调度客户端与所述集群调度服务器之间通过 A 1 Od/A 11 d接口进行通信。
4. 根据权利要求 2所述的集群通信系统， 其特征在于， 所述 基站系统与所述集群调度客户端之间通过 A8d/A9d 接口 进行通信。
5. ^^据权利要求 2所述的集群通信系统， 其特征在于， 所述 基站系统包括基站控制器和基站收发信机， 所述集群调度 客户端外置于或内置于所述基站控制器。
6. 根据杈利要求 1至 5中任一项所述的集群通信系统，其特 征在于 7 所述通信信息包括语音信息。
7. 根据权利要求 1至 5中任一项所述的集群通信系统，其特 征在于，所述集群通信系统为 CDMA制式集群通信系统。
8. —种在集群通信系统中发送通信信息的方法， 其特征在 于， 所述方法包括以下步马聚： 集群调度客户端将从集群终端接收到的通信信息发 送到与其通信的除发送所述通信信息的所述集群终端以 外的其他集群终端， 并将所述通信信息发送到集群调度服 务器； 以及 集群调度服务器将所述通信信息发送到除与发送所 述通信信息的所述集群终端通信的所述集群调度客户端 以外的其他集群调度客户端。
9. 根据权利要求 8所述的方法， 其特征在于， 还包括以下步 骤： 集群呼叫建立完成并开始集群通信时，所述集群终端 通过基站系统将所述通信信息发送到所述集群调度客户 端。
10. 根据权利要求 8所述的方法， 其特征在于， 所述集群调度 客户端与所述集群调度服务器通过 AlOd/Al ld 接口进行 通信。
11. 才艮据权利要求 9所述的方法， 其特征在于， 所述基站系统 与所述集群调度客户端通过 A8d/A9d接口进行通信。
12. 根据权利要求 8至 11中任一项所述的方法， 其特征在于， 所述通信信息包括语音信息。
13. 根据权利要求 8至 11中任一项所述的方法， 其特征在于， 所述集群通信系统为 CDMA制式集群通信系统。
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