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Group call processing control method for railway dedicated mobile terminal

A mobile terminal, processing and control technology, applied in communication supplementary services, electrical components, wireless communication, etc., can solve the problems of inconsistent parameters, inability to decode voice information normally, TSC errors, etc.

Active Publication Date: 2021-02-02
SHENZHEN SED WIRELESS COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the user chooses to join the group call / broadcast after a period of time after receiving a group call during the call, the group call / broadcast has ended, causing the mobile terminal to mistakenly join the released group call channel, It is necessary to wait for the wireless link to time out before exiting the group call. The whole process takes up to 20s, which seriously affects the user experience
[0004] Another scenario is that when some network configurations are abnormal, the group call notification message sent on the FACCH is inconsistent with the parameters of the NCH group call notification message (for example: the TSC transmission in the group call channel description on the network FACCH and NCH is inconsistent, and the FACCH The TSC sent on the network is wrong, causing the user to fail to decode the voice information after joining the group call according to the FACCH notification). abnormal communication

Method used

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  • Group call processing control method for railway dedicated mobile terminal
  • Group call processing control method for railway dedicated mobile terminal
  • Group call processing control method for railway dedicated mobile terminal

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Embodiment Construction

[0027]The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0028]SeeFigure 1-4, The present invention provides a technical solution: a method for controlling group call processing of a railway dedicated mobile terminal, including the following steps:

[0029]S1: After the mobile terminal is booted and initialized, the group call joining permission status in the radio resource management entity and the group call control entity are both set to TRUE, and the user initiates a point-to-point call / group call / b...

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Abstract

The invention discloses a group call processing control method for a railway dedicated mobile terminal, which comprises the following steps: when a user initiates a point-to-point call / group call / broadcast or answers the point-to-point call, when the mobile terminal receives a channel allocation message from a Um port and joins in the channel allocation message and when the user joins in the groupcall, in the process that the wireless resource management layer joins the group call service channel, setting the group call join permission state to be FALSE; when a user hangs up a group call / broadcast, ending a point-to-point call or quitting a group call / broadcast, quitting from a traffic channel (TCH), entering an idle state and residing in a serving cell, starting up to monitor the BCCH, the CCCH and the NCH, and when a handheld terminal monitors a complete NCH notification period on the NCH, adding the group call into allowable state. According to the method, the problem that the handheld station joins in the released group call channel in the call can be solved, and the problem that the group call notification parameters of the network on the FACCH are wrong under some conditionscan be solved.

Description

Technical field[0001]The invention relates to the technical field of railway communication, in particular to a group call processing control method for a railway dedicated mobile terminal.Background technique[0002]GSM-R is a railway dedicated mobile communication system widely used in countries all over the world. An important feature of GSM-R is that it can provide users with trunking communication services such as group call (VGCS) and broadcast (VBS). When a user initiates a new group call / broadcast call, the GSM-R network will periodically send a group call notification message on the NCH, and at the same time, it will move within the group call / network area to support group call services on the service channel TCH The terminal sends a group call notification message through the FACCH channel. The mobile terminal can obtain the call type, group call / broadcast ID, group call / broadcast area ID, and corresponding channel description by analyzing the received group call notification...

Claims

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Application Information

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IPC IPC(8): H04W4/08H04W4/16H04W24/04
CPCH04W4/08H04W4/16H04W24/04
Inventor 韩佳汛霍光瑞罗江友
Owner SHENZHEN SED WIRELESS COMM TECH
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