Method, device and system for realizing d2d data transmission in cellular network

Abstract

A method, device, and system that enable device-to-device (D2D) data transmissions in a cellular network. The major content comprises: a resources allocation method, specifically: a base station receives a data transmission request from a first user equipment (UE); a D2D connection has already been established between the first UE and a second UE; allocating wireless resources for data transmissions between the first UE and the second UE according to the received data transmission request, and transmitting the wireless resources allocation result to the first UE and / or the second UE; a data transmission method, specifically: the first UE transmits a data transmission request to the base station; the first UE and the second UE receive the wireless resources allocation result from the base station; the first UE uses the wireless resources allocated by the base station to transmit data to the second UE, and the second UE uses the wireless resources allocated by the base station to receive the data transmitted by the first UE. The present method enables D2D data transmissions in a cellular network.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method, device and system for realizing device-to-device communication (Device to Device Communication, D2D) data transmission in a cellular network. Background technique [0002] Device-to-Device Communication (Device to Device Communication, D2D) refers to direct communication between user devices without infrastructure, and D2D in the prior art uses technologies such as Bluetooth and Wireless Fidelity (Wireless Fidelity, WIFI). The existing cellular network does not support D2D, and the communication between user equipment must transmit data through the base station. If D2D can be implemented in the cellular network, it will be possible for the user equipment with a short distance to discover each other and directly transmit data with the other party, thereby saving air interface and core network resources and providing new services, such as battle games and...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the research results are focused on academic theoretical research such as algorithms for realizing D2D resource allocation, while in actual cellular networks, especially in Long Term Evolution (Long Term Evolution, LTE) networks, the related information of realizing D2D resource allocation and data transmission There are not many studies, which means that there is currently a lack of methods for D2D resource allocation and data transmission in cellular networks.

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