Synchronization source determination method and device based on D2D communication technology, terminal and medium

Abstract

The invention provides a synchronization source determination method and device based on a D2D communication technology, a terminal and a storage medium. The method comprises the following steps: determining whether a synchronization source exists in a coverage area of a cellular network based on a plurality of broadcast signals acquired by a current user terminal; if the synchronization source does not exist in the coverage area of the cellular network, determining a plurality of candidate user terminals corresponding to the current user terminal outside the coverage area of the cellular network and synchronization parameters corresponding to the plurality of candidate user terminals according to the plurality of broadcast signals, wherein the synchronization parameter corresponding to any candidate user terminal comprises at least one of mobile state information, electric quantity information and the number of peripheral user terminals; sorting the plurality of candidate user terminals; determining at least one synchronization source in the plurality of candidate user terminals based on the sorting processing result. According to the method disclosed in the embodiment of the invention, the problem of poor synchronization processing efficiency in the prior art is solved through the synchronization parameters.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular to a method, device, terminal and medium for determining a synchronization source based on D2D communication technology. Background technique [0002] D2D (Device to Device) communication is a technology that allows a user equipment (User Equipment, UE for short) to directly communicate with neighboring UEs via a licensed or unlicensed frequency band under the control of a wireless communication system. D2D communication mainly includes three application scenarios, and these three application scenarios are: 1) the two UEs performing D2D communication are within the coverage of the cellular network; 2) the two UEs performing D2D communication are partially within the coverage of the cellular network 3) The two UEs performing D2D communication are not within the coverage of the cellular network. In the third application scenario, the synchronization source genera...

AI Technical Summary

Problems solved by technology

This method does not screen user terminals outside the coverage area of ​​the cellular network, so there may be subsequent synchronization failures due to low power of the user terminals outside the coverage area of ​​the cellular network, or excessive movement speed of user terminals outside the coverage area of ​​the cellular network. Quickly lead to the problem of instability in the subsequent synchronization process

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