WO2005122598A1 - Procede pour etablir rapidement une communication dans un systeme de communication numerique a ressources partagees - Google Patents

Procede pour etablir rapidement une communication dans un systeme de communication numerique a ressources partagees Download PDF

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Publication number
WO2005122598A1
WO2005122598A1 PCT/CN2004/001567 CN2004001567W WO2005122598A1 WO 2005122598 A1 WO2005122598 A1 WO 2005122598A1 CN 2004001567 W CN2004001567 W CN 2004001567W WO 2005122598 A1 WO2005122598 A1 WO 2005122598A1
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WO
WIPO (PCT)
Prior art keywords
call
terminal
base station
message
channel
Prior art date
Application number
PCT/CN2004/001567
Other languages
English (en)
Chinese (zh)
Inventor
Jinlong Liu
Yuhong Xue
Original Assignee
Zte Corporation
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 Zte Corporation filed Critical Zte Corporation
Publication of WO2005122598A1 publication Critical patent/WO2005122598A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/08—Trunked mobile radio systems

Definitions

  • the present invention relates to a method for establishing a call in a mobile communication system, and in particular, to a method for quickly establishing a call in a trunked mobile communication system of a CDMA (Code Division Multiple Access) system.
  • CDMA Code Division Multiple Access
  • trunking communication has increasingly become an indispensable business content.
  • Digital trunking system is an important branch of mobile communication system. It is a special mobile communication system where multiple users share a group of wireless channels and use these channels dynamically.
  • the call types of the trunking service include group calls and private calls. These two types of calls are important service features in the trunking system.
  • a group call means that a single user can talk to everyone in the group when allowed. The users in the group, except the person who is talking, must be listening, and once someone in the group presses the PTT (Push To Tal) button, the priority of other people is the same as that of the person who is talking , You can't steal, you can only wait for the speaker to finish the call.
  • a private call is a one-to-one user call, and the user can select an object to call Call.
  • the CDMA trunking system adopts a packet data channel for trunking call services, that is, fast call establishment is achieved by using an Ethernet transmission method, instead of the circuit domain of a traditional call using a circuit switching method.
  • the CDMA trunking system adopts a fast call access method and supports group calls, that is, one-to-many call methods.
  • group calls that is, one-to-many call methods.
  • users in a group are required to share the forward channel in the same cell.
  • PTT button he can talk to other users in the group.
  • This type of PTT service is widely used. It is applied to intercom system and trunking system, and provides command and dispatch function for group users.
  • CDMA trunking communication system can not only attract new individual users, but also attract professional users for operators.
  • the most important feature of trunking communication is that the call connection time is short and it can quickly enter the service channel conversation state.
  • channel acquisition and signaling handshake must be performed.
  • the signaling handshake can only be performed after the system is acquired. This extends the call establishment time and cannot meet the trunk call.
  • Fast setup requirements In a traditional CDMA system, the base station subsystem sends an extended channel assignment message (ECAM) while sending an empty frame to the terminal on the allocated forward traffic channel, and the terminal performs an ECAM message. After processing, switch to the forward traffic channel, and after receiving at least two good empty frames, start sending prefixes on the reverse channel.
  • ECAM extended channel assignment message
  • the base station subsystem After capturing the reverse traffic channel, the base station subsystem sends a base station response instruction (BSAckOrder) to the terminal. Message, and indicates in the base station response instruction message that the message requires reverse confirmation, the terminal sends a terminal response instruction (MSAckOrder) message to respond, and indicates that Indicate whether base station verification is required.
  • BSAckOrder base station response instruction
  • MSAckOrder terminal response instruction
  • the above process is performed after the signaling messages BSAckOrder and MSAckOrde r sent by the base station and the terminal are acquired after the service channel is captured.
  • the signaling handshake can be performed only after the entire acquisition process is completed.
  • the call setup time cannot meet the requirements for fast call setup in trunked calls.
  • the ordinary call establishment process In order to realize the requirements for fast response of trunking communication, the ordinary call establishment process must be transformed to reduce the capture time. At present, there is no effective fast response method in digital trunking systems. Summary of the invention
  • the purpose of the present invention is to provide a method for quickly establishing a call in a CDMA mobile communication system, which overcomes the shortcomings of the existing technology that cannot implement the function of fast access to a call in a CDMA digital trunking system, and realizes the rapid establishment of a call.
  • the present invention provides a method for quickly establishing a call in a CDMA mobile communication system, including the following steps:
  • Step 1 The terminal initiates a call request.
  • Step 2 The base station receives the call request, allocates channel resources for the call, establishes a forward traffic channel according to the channel allocation, sends an extended channel assignment message to the terminal, and assigns the allocated traffic channel to the terminal.
  • the service channel sends a base station response instruction message;
  • Step 3 The terminal receives the channel assignment message of the base station, enters the service channel, and after receiving the base station response command message, sends a confirmation message to the base station, and requests the base station to return a response message in the confirmation message;
  • Step 4 After receiving the confirmation message sent by the terminal, the base station sends a response message to the terminal. Step 5. After the terminal receives the response message sent by the base station, the call is successfully established.
  • step 3 after receiving the base station response instruction message, the terminal continuously sends a confirmation message to the base station, and requests the base station to return a response message in the confirmation message; in step 5, the terminal receives the response message sent by the base station. After that, it stops sending confirmation messages, and the call is successfully established.
  • the method of the present invention adopts a method in which the signaling handshake and channel acquisition are performed simultaneously, so that the signaling handshake is advanced, the call connection time is reduced, and rapid call establishment is achieved.
  • the base station subsystem does not use the traditional method of sending empty frames during the acquisition process, but directly sends BSAckOrder signaling. After receiving two consecutive good frames, that is, the BSAckOrder message, the terminal, Instead of sending a prefix frame, it sends a MSAckOrder to respond.
  • This signaling handshake is used in advance, so that the acquisition process of the service channel and the signaling handshake are performed at the same time, which saves the connection time of cluster users and overcomes the CDMA system.
  • the connection time is long, and it does not meet the defects of cluster business requirements.
  • FIG. 1 is a flowchart of a method according to the present invention
  • FIG. 2 is a schematic diagram of message interaction of the method according to the present invention. detailed description
  • Step 1 The terminal applies to initiate a call request.
  • the call may be a PTT call or a normal call.
  • the terminal user presses the PTT button to initiate the call.
  • Step 2. The base station subsystem receives the call, allocates channel resources for the call, establishes a forward traffic channel according to the channel allocation, sends an extended channel assignment message to the terminal, and assigns the allocated traffic channel to the terminal.
  • Step 3 After receiving the channel assignment message, the terminal turns on the receiver. After receiving two consecutive good frames, that is, the BSAckOrder message, the terminal sends an MSAckOrder message to the base station, and requests the base station to respond;
  • Step 4 After the base station captures the MSAckOrder message, it sends a response to the terminal.
  • Step 5 After receiving the response message sent by the base station, the terminal completes service channel acquisition and signaling handshake, and the call is successfully established.
  • step 3 when the terminal sends the MSAckOrder message to the base station, continuous sending may be adopted. After the base station captures the MSAckOrder message and sends a response to the terminal, the terminal stops sending the MSAckOrder message after receiving the response message.
  • a specific example of the method for quickly establishing a call in a CDMA mobile communication system is:
  • a base station in a base station subsystem (BSS) sends a channel indicator in the air.
  • the message is assigned to the terminal, and the assigned traffic channel is specified for the terminal. Instead of sending an empty frame on the traffic channel, it directly sends the base station response message BSAckOrder.
  • BSS base station subsystem
  • the terminal After receiving the channel assignment message, the terminal turns on the receiver and receives two consecutive messages. A good frame, because the base station forwards the BSAckOrder message instead of an empty frame, so the terminal must receive the BSAckOrder message at this time.
  • the terminal continuously sends MSAckOrder to the base station subsystem on the reverse traffic channel. Message, and the base station is required to respond, and the terminal waits for a response from the base station. After the base station subsystem successfully captures the MSAckOrder message sent by the terminal on the reverse traffic channel, it sends a confirmation to the terminal to stop the terminal from sending the MSAckOrder message. At this time, the air chain The road has been established successfully, In addition, the signaling handshake is completed in advance, and the normal call process can be performed.
  • the present invention is used in a CDMA-based trunking system to achieve rapid call establishment, to overcome the traditional serial processing mode of signalling handshake after capture is completed, and to adopt a way of signaling handshake in advance, so that the acquisition process of service channels
  • the signaling handshake is performed simultaneously, which speeds up the user's call access time.
  • FIG. 2 is a schematic diagram of message interaction of the method according to the present invention.
  • the terminal initiates a call request
  • the base station sends a BSAckOrder message on the forward traffic channel; then, the base station sends a channel assignment message; it should be noted that the first two sending commands are not in sequence, and either one can be sent first.
  • the terminal After receiving the first two messages, the terminal sends an MSAckOrder message. After the base station captures the MSAckOrder message, it sends a response to the terminal. After receiving the response, the service channel capture and signaling handshake are completed, and the call connection is successfully established.
  • the CDMA trunking communication system adopts the third-generation system technology of mobile communication, which has a large space for technology and business development.
  • the method proposed by the present invention is based on mature CDMA technology, does not change the physical mechanism of the air interface, and applies the air interface.
  • the present invention adopts a signaling handshake advance method, so that the acquisition of the service channel and the signaling handshake are completed at the same time, which speeds up the call establishment time.
  • the present invention can not only meet the time required for fast call establishment in a CDMA-based cluster system The requirements are also effective for speeding up the call establishment process in the ordinary CDMA2000 system.

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

Abstract

L'invention concerne un procédé pour établir rapidement une communication dans un système de communication mobile à accès multiple par répartition en code (CDMA). Selon l'invention, l'utilisateur d'un terminal initialise une demande de communication, la station de base reçoit cette demande de communication, elle alloue une ressource canal pour cette communication, elle transmet le message d'allocation de canal étalé au terminal, elle désigne le canal de service de distribution pour le terminal, et elle transmet un message BSAckOrder sur un canal de service aller. L'utilisateur du terminal ayant reçu le message BSAckOrder, le terminal transmet en continu un message d'approbation à la station de base et demande un message de réponse de la station de base dans le message d'approbation. La station de base ayant reçu le message d'approbation transmis par le terminal, elle envoie une réponse au terminal. Le terminal ayant reçu le message de réponse transmis par la station de base, il interrompt la transmission du message d'approbation, l'établissement de la communication étant ainsi réalisé. Le procédé de l'invention applique un mode de chevauchement de prise de contact de signalisation et de captage de canal, de manière à avancer la prise de contact de signalisation, à réduire le temps de connexion et à établir ainsi une communication rapidement.
PCT/CN2004/001567 2004-06-12 2004-12-29 Procede pour etablir rapidement une communication dans un systeme de communication numerique a ressources partagees WO2005122598A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200410027627.2 2004-06-12
CN 200410027627 CN1287618C (zh) 2004-06-12 2004-06-12 移动通信系统呼叫快速建立方法

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WO2005122598A1 true WO2005122598A1 (fr) 2005-12-22

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WO (1) WO2005122598A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100409701C (zh) * 2005-07-11 2008-08-06 大唐移动通信设备有限公司 控制集群系统无线一键通方式讲话权的方法
CN100438658C (zh) * 2006-09-30 2008-11-26 华为技术有限公司 邀请集群用户的方法、集群通信系统和集群用户邀请装置
CN101365222B (zh) * 2007-08-10 2011-05-04 上海华为技术有限公司 反向共享信令信道接入方法、移动台及基站
CN101489318B (zh) * 2008-01-16 2010-12-08 中兴通讯股份有限公司 一种移动通信终端主叫建立的方法
CN101742416B (zh) * 2009-12-14 2013-01-16 中兴通讯股份有限公司 用于数字集群系统的终端及其广播信道消息处理方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030119539A1 (en) * 2001-12-20 2003-06-26 Needham Michael L. Base site and method for quickly establishing a CDMA dispatch call
EP1395071A1 (fr) * 2002-08-23 2004-03-03 Teltronic S.A.U. Procédé d'établissement d'appel entre des stations mobiles avec vérification de présence

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030119539A1 (en) * 2001-12-20 2003-06-26 Needham Michael L. Base site and method for quickly establishing a CDMA dispatch call
EP1395071A1 (fr) * 2002-08-23 2004-03-03 Teltronic S.A.U. Procédé d'établissement d'appel entre des stations mobiles avec vérification de présence

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CN1287618C (zh) 2006-11-29
CN1585527A (zh) 2005-02-23

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