Emergency call method, trunked communication system, base station and control device

Abstract

The invention relates to an emergency calling method, a cluster communication system, a base station and a control device. The method comprises the following steps that: a base station receives a second calling request signal sent by a terminal, and is connected with the terminal according to the second calling request signal; the control device receives a second calling request signal which is transmitted by the base station and sent by the terminal after the base station is connected with the terminal, determines a shared channel corresponding to the second calling request signal according to the second calling request signal, and sends the shared channel to the terminal through the base station in order to instruct the terminal to occupy the shared channel, wherein the shared channel isa shared channel which is established and cached according to the first calling request signal by the control device after receiving the first calling request signal sent by the terminal; and the control device sends the second calling request signal to a scheduling console after determining the shared channel corresponding to the second calling request signal, and the scheduling console establishes a call according to the second calling request signal. Through the embodiment of the invention, calling time delay is shortened, and a calling channel is prevented from being established repeatedly.

Description

technical field [0001] The invention relates to the field of trunking communication, and more specifically relates to an emergency call method, a trunking communication system, a base station and a control device. Background technique [0002] In the existing cluster private network, the call is mainly through the terminal input number, and it is first processed by the base station and then transmitted to the cluster core network for control access, and the emergency call is basically the same as the ordinary call process; and For broadband and narrowband trunking private networks, the time delay consumed by air interface transmission and IP (Internet Protocol, Internet Protocol) routing at the wired end accounts for a relatively large proportion in the entire call establishment. The delay requirements for emergency calls are even higher. [0003] Emergency call is a special type of call with little delay and low time delay. At present, emergency calls do not need to be dia...

AI Technical Summary

Problems solved by technology

This can also cause emergency calls to take too long

And will cause ordinary calls to fail frequently in emergency situations;

[0012] 3. A lot of signaling is transmitted during the process of establishing an emergency call, which will increase the load on the CPU of the server where the network element is located in the TCN (Trunking Media Function, cluster core network)

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