Synchronous communication method and terminal

Abstract

A synchronous communication method comprises the steps that a first terminal obtains first configuration information, and the first configuration information comprises a first parameter; the first terminal determines a corresponding transmission time slot in a device-to-device (D2D) communication system at the current moment according to a clock of a global navigation satellite system (GNSS); thefirst terminal judges whether the current moment is a synchronization information sending moment or not according to the transmission time slot and the first parameter; if yes, the first terminal sends direct connection link synchronization information at the synchronization information sending moment, the direct connection link synchronization information carries indication information, the direct connection link synchronization information is used for enabling the second terminal to be synchronized with the first terminal, and the indication information is used for indicating the second terminal that the first terminal is a synchronization source using a GNSS clock.

Description

[0001] Cross-reference [0002] The present application is submitted to the Chinese Patent Office on August 12, 2015, and the application number is 201580039695.7, the application name is "synchronous communication method and terminal", which is incorporated herein by reference. Technical field [0003] The present invention relates to the field of communications, and more particularly to synchronous communication methods and terminals. Background technique [0004] With the continuous development of society, the popularity of automobiles is getting higher and higher. When driving travel is convenient to people, they also have a negative impact on human society, and the number of vehicles has increased rapidly caused urban traffic congestion. A series of issues such as frequent traffic accidents, environmental quality varies. According to statistics, in 2013, there were nearly 200,000 traffic accidents in China, causing 5.8 people to death, direct economic losses reached 1.04 bi...

AI Technical Summary

Problems solved by technology

[0008] In the prior art, when a terminal outside the coverage area is used as a synchronization source to send a synchronization signal, different synchronization sources are likely to be out of synchronization, and the out-of-synchronization of the two synchronization sources will cause the two synchronization sources to overlap The receiving terminals under the network are not synchronized, which will affect the communication between the two receiving terminals, and there may be problems of being unable to communicate with each other or missing hearing, which will seriously affect the communication performance.

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