Method, device and system for inter-device communication

Abstract

A method, device, and system for inter-device communication; where the implementation of the method includes: after receiving a call request from the calling terminal, the serving base station of the calling terminal forwards the call request to a mobility management entity; receiving the return from the mobility management entity The serving base station information of the called terminal corresponding to the call request; determine the serving base station of the called terminal according to the serving base station information of the called terminal, and perform resource allocation negotiation and timing synchronization with the serving base station of the called terminal Negotiation: sending the negotiation results of resource allocation negotiation and timing synchronization negotiation to the calling terminal, and the negotiation results are used for inter-device communication between the calling terminal and the called terminal. In this way, the D2D communication between the calling terminal and the called terminal under different base stations can be realized.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method, device and system for communication between devices. Background technique [0002] With the development of mobile communication technology, the evolution of mobile communication system will bring about continuous increase in bandwidth requirements, which will make bandwidth allocation more and more crowded. Since the spectrum resources available for mobile communication are very limited, the demand for bandwidth is in short supply. In order to alleviate the shortage of bandwidth, it is necessary to use spectrum resources more efficiently. Based on this idea, D2D (device to device, between devices) communication technology came into being. The D2D communication method is a technology for directly exchanging data or providing services without being transferred by an eNB (evolved Node B, base station). [0003] Such as figure 1 As shown in the schematic di...

AI Technical Summary

Problems solved by technology

[0013] The current D2D communication process only provides a solution for D2D communication between the calling terminal and the called terminal under the same serving base station; if two terminals under different serving base stations need to use D2D communication, then a serving base station cannot The allocation of resources and timing information for sending and receiving have been decided. The above-mentioned procedures cannot support D2D communication between terminals under different eNBs.

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