Master control channel switching method and device of PDT system

Abstract

The invention discloses a main control channel switching method for a PDT system, and the method comprises the steps: searching a standby main control channel for main control channel switching when amain control channel breaks down, if the available standby main control channel does not exist, searching an idle service channel to perform main control channel switching, and if the available idleservice channel does not exist, preempting the low-priority service channel to perform master control channel switching. The invention further discloses a corresponding device. By applying the technical scheme disclosed by the invention, the master control channel can be switched more quickly, and the normal operation of the base station service under extreme conditions is ensured.

Description

technical field [0001] The present application relates to the technical field of trunking communication, and in particular to a master control channel switching method and device of a PDT system. Background technique [0002] Professional Digital Trunking (PDT: Professional Digital Trunking) system is an important part of the private network system, occupying an important position in various emergency command scenarios, and the coverage of the base station determines the breadth and depth of the entire PDT system, as the base station " The main control channel of the "brain" is crucial to the normal operation and performance guarantee of the entire PDT service. [0003] At present, some base station systems do not guarantee the reliability of the main control channel, that is, there is only one main control channel and no standby main control channel; some base station systems have made reliability guarantee for the main control channel, mainly in the following three ways :...

AI Technical Summary

Problems solved by technology

[0012] One is that periodic switching will cause base station switching delay;

[0013] The second is that some services will be carried out periodically, wasting air interface resources, such as the terminal needs to re-connect to the network every time the main control channel is switched;

[0014] Third, when the main control channel fails, it must wait until the cycle arrives before switching to the available main control channel, which will seriously affect the user experience

[0015] (3) For the method of using an idle traffic channel as the main control channel, when the main control channel fails, the base station needs to re-find the available traffic channel as the main control channel, and the switching delay is relatively large, which may cause the normal service delay to be relatively long. Large, when there is no available traffic channel as the main control channel, it will even affect the entire base station business

[0016] Therefore, none of the above three existing methods can effectively guarantee the reliability of the master channel

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