Method for simultaneously distributing point call channel and group call channel of voice group call business

A technology of voice group call service and group call channel, applied in the field of voice group call technology, can solve the problem of increasing the delay of group call establishment, and achieve the effect of speeding up the establishment time

Inactive Publication Date: 2009-07-29
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0013] At this stage, the general manufacturers use the method of allocating the dedicated channel of point call first, and then start the cha

Method used

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  • Method for simultaneously distributing point call channel and group call channel of voice group call business
  • Method for simultaneously distributing point call channel and group call channel of voice group call business

Examples

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[0022] When the group call register returns the correct parameters of the group call, the mobile services switching center immediately starts the channel allocation process.

[0023] For the signaling flowchart of the present invention, see figure 1 . The specific implementation steps are as follows:

[0024] Step 1: Group call establishment: The mobile services switching center sends a group call establishment message to the base station controller in the group call area, requesting to establish a SCCP connection dedicated to the transmission of signaling related to the group call between it and the base station controller , The signaling message contains the reference number of the group call.

[0025] Step 2: Group call establishment confirmation: When the base station controller receives the SCCP connection request from the mobile services switching center, it will confirm to the mobile services switching center using the group call establishment message to establish one of t...

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Abstract

The invention relates to a method for distributing point calling channel and group calling channel simultaneously in voice group calling service, suitable for GSM-R system. 3GPP protocol standard (TS 03.68) has no clear define to channel distribution in A interface voice group calling service, only introduces the process of first to distribute point calling channel, then to distribute group calling channel in the group calling establishing flow. The invention discloses a new voice group calling channel distributing scheme, saves the group calling establishing time of about 500ms by distributing point calling channel and group calling channel simultaneously, and causes the voice group calling service more suitable for railway which is a special application environment with high reliability and time delay requirement.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a voice group call technology used in the GSM-R system. Background technique [0002] GSM-R (GSM-Railway, railway integrated digital mobile communication system) system is based on GSM public mobile communication technology, develops together with GSM, and can replace various existing railway communication and control systems with a single platform. system. [0003] GSM-R system is a comprehensive dedicated digital mobile communication system specially designed for railway communication. Based on the advanced voice call functions of the GSM Phase2+ standard protocol, such as group call, broadcast call, multi-priority preemption and forced demolition, it adds functions such as location-based addressing and function addressing, which are suitable for railway communications, especially The need for railway-specific dispatch communications. It mainly provides voice communication ...

Claims

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Application Information

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IPC IPC(8): H04W4/08H04W72/04H04W76/02
Inventor 朱刚钟章队陈皓赵留俊艾渤丁建文吴昊熊磊陈霞
Owner BEIJING JIAOTONG UNIV
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