PTT communication method, sever, terminal and system

Abstract

The embodiment of the invention provides a PTT communication method, a server, a terminal and a system, wherein the method comprises: receiving PTT communication establishing request transmitted by the terminal of the server, wherein the PTT communication establishing request is carried along group ID and district ID of the district of the terminal; according to the group ID, inquiring the predefined regional information of the group corresponding to the group ID; judging the terminal whether being in the predefined region of the group, according to the inquired predefined regional information and the district ID of the current district; based on the judging result, transmitting the PTT communication establishing response to the terminal. The PTT communication method, the server, the terminal and the system provided by the embodiment of the invention reduce the realizing cost of the PTT communication in the predefined region.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a PTT communication method, server, terminal and system. Background technique [0002] Push To Talk (PTT) communication is a half-duplex communication method between multiple members belonging to the same group. Its basic form is: a user presses the PTT button on the terminal, and the media stream can be transmitted to members of the same group through the communication network; after releasing the PTT button, the media stream will stop transmitting. The PTT communication in the predefined area means that users in the same group can only carry out PTT communication in the predefined area. If he is outside the predefined area of ​​the group, he will exit the PTT communication; if a member belonging to the group enters the predefined area of ​​the group, he will join the PTT communication. [0003] At present, in wireless communication systems such as the Gl...

AI Technical Summary

Problems solved by technology

[0003] At present, in wireless communication systems such as the Global System for Mobile Communications for Railways (GSM-R for short), PTT communication in a predefined area is realized, but it is necessary to control the control plane information of the core network and the access network. Modify the order, and add PTT communication information in the signaling processing flow, so that the configuration of the core network and access network elements of the wireless network need to be modified. For example, in the GSM-R network, the Mobile Switching Center (Mobile Switching Center) needs to be modified. Centre, referred to as: MSC), multimedia gateway (Multimedia Media Gateway, referred to as: MGW), home location register (Home Location Register, referred to as: HLR), base station controller (Base Station Controller, referred to as: BSC), base station (Base Transceiver Station , referred to as: BTS) and other configurations, and for the wireless network that has been put into use at present, in order to realize the PTT communication in the predefined area, it is necessary to update or upgrade the core network and access network elements, which will cost a lot of money. Not convenient for business deployment

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