Communication terminal, handover method and system thereof, base station and storage medium

Abstract

The invention discloses a communication terminal, a handover method and system thereof, a base station and a storage medium. The handover method of the communication terminal comprises the following steps: when the communication terminal performs a communication service under a current base station, judging whether the communication terminal itself meets a handover condition or not; if yes, sending a first request message for requesting to provide an optional adjacent station to the current base station through a current channel; and switching from the current base station to an adjacent base station according to selectable adjacent station information in a reverse channel signaling transmitted by the current base station through an adjacent time slot of the current channel. By means of the method, the communication terminal can request to obtain the adjacent station information at any time so as to carry out handover.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a communication terminal and its handover method, system, base station and storage medium. Background technique [0002] In the digital trunking communication system, there are a large number of scenarios that require handover to ensure the signal quality of the current walkie-talkie call. In the PDT (Police Digital Trunking) or DMR (Digital Radio Communication Standard) digital standard, the system will broadcast the adjacent station control channel (C_BCAST) or traffic channel (P_BCAST) to the terminal on the control channel or traffic channel. After the terminal receives the channel, During a call, the neighboring cell base stations will be scanned when the signal of the current channel becomes poor. Then judge whether to start the handover according to the current signal quality of the terminal and the signal quality of neighboring stations. [0003] However,...

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Problems solved by technology

[0003] However, in practical applications, the existing handover technology is very dependent on the broadcast of system neighbor information, that is, the terminal needs to receive the neighbor broadcast to know the existence of other neighbors before scanning the neighbors to judge whether it can pass

This method has obvious defects. First, in practical applications, there are scenarios where the terminal cannot receive or has not yet received the neighbor broadcast. On the other hand, a large number of neighbor broadcasts will also increase the load on system channel resources.

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