Method for direct communication between user equipment of cells, user equipment and communication system

Abstract

The embodiment of the invention provides a method for direct communication between user equipment of cells, a piece of user equipment and a communication system and relates to the field of communication. Direct communication between user equipment of different-frequency adjacent cells can be realized. The method comprises the following steps: equipment search is carried out at a first frequency according to timing information of a first cell in order to find third user equipment positioned in an overlap region of the first cell and a second cell; a first paging request message is sent to the third user equipment; a first paging response message sent by the third user equipment is received, wherein the first paging response message includes a second frequency, timing information of the second cell and a timing structure of the second cell; and second user equipment positioned in the second cell is searched according to the second frequency, the timing information of the second cell and the timing structure of the second cell. The method for direct communication between user equipment of cells, the user equipment and the communication system, which are provided by the embodiment of the invention, are used for direct communication between user equipment of different-frequency adjacent cells.

Description

technical field [0001] The present invention relates to the field of communication, in particular to a method for direct communication of user equipment between cells, user equipment and a communication system. Background technique [0002] At present, the cellular network is the main wireless communication network. In this communication network, the communication between two devices needs to be forwarded by the base station. The same data packet travels from the device to the base station, and then from the base station to the device, occupying the air interface (Air Interface, AI ) resource twice. [0003] The direct communication between devices (Device to Device, D2D) can enable direct communication between devices without any intermediate infrastructure. In this way, data packets are directly transmitted between devices without being forwarded by the base station. Save half the resources. Therefore, the direct communication of devices can use spectrum resources more e...

AI Technical Summary

Problems solved by technology

However, due to the different frequency or timing structure of the D2D communication between the neighbors, the two UEs cannot discover and page each other, so that the D2D communication cannot be realized.

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