Data sharing method, device and terminal based on terminal direct communication

Abstract

The invention provides a data sharing method, device and terminal based on terminal direct communication. The data sharing method based on the data direct communication comprises the steps that at least one target terminal which needs to conduct data sharing is determined, and an application layer user identification of the target terminal is acquired; the application layer user identification of the target terminal is mapped to be identification information which can be identified by EPS equipment; according to the identification information which can be identified by the EPS equipment and the resource availability of a sharing channel, a transmission path used for conducting data sharing is selected, and data sharing of the target terminal is achieved through the selected transmission path. According to the technical scheme, by means of the data sharing method, device and terminal based on the terminal direct communication, on the premise of lowering the influence on technical specifications of the RAN side as much as possible, it can be guaranteed that more superior D2D data sharing can be achieved.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a data sharing method based on terminal direct communication, a data sharing device based on terminal direct communication, and a terminal. Background technique [0002] With the development of mobile terminal software and hardware technology and wireless communication technology, terminal direct communication technology (Device to Device, or D2D, is a technology for direct terminal communication introduced by 3GPP, allowing user data transmission without going through the infrastructure of the cellular network) Gradually become an important technical point. D2D technology mainly includes D2D discovery (discovery phase) and D2D communication (communication phase). D2D discovery and D2D communication are independent services. D2D communication allows two UEs to directly send data through a specific channel (sidelink channel). And transmission, without the tr...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that the following defects in the prior art lead to the inability to support D2D data sharing: first, the UE's proximity relationship is maintained at the application layer, and cannot be associated with a communication path that supports data sharing; second, the proximity relationship is based on a one-way discovery mechanism, Through this discovery mechanism, only the location relationship of the UE can be determined, but it cannot be determined whether D2D communication can be performed between two UEs.

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