In-band full duplex D2D communication link interference elimination method used for cellular network

Abstract

The invention belongs to a full duplex D2D communication link interference elimination method, and particularly relates to an in-band full duplex D2D communication link interference elimination method used for a cellular network. The method includes: a base station, a cellular user, a couple of in-band full duplex D2D communication link users form a cellular network, and an in-band full duplex D2D communication link multiplexes cellular network downlink spectrum resources, and has a capability of simultaneous same-frequency signal sending and receiving; the method includes the cellular network transmitting base station BS of a point-to-point topological structure, the cellular network user USER1, the USER2 and USER3 which multiplex the cellular network downlink spectrum resources and adopt in-band full duplex D2D communication; and the in-band full duplex D2D communication users have the capability of receiving a signal while sending a signal, forward a monitored signal while sending a target signal, and allocate optimal transmitting power of the target signal and received signal, thereby improving communication quality of the in-band full duplex D2D communication link. The method utilizes the characteristic of simultaneous receiving and sending of in-band full duplex, and the overall performance of a cellular communication system is not influenced while D2D communication quality is improved.

Description

technical field [0001] The present invention relates to a duplex D2D communication link interference elimination method, in particular to an in-band full-duplex D2D communication link interference elimination method for a cellular network. Background technique [0002] With the continuous increase of emerging data services such as video sharing, online games, proximity sensing, etc., the network performance of cellular networks has become an important problem to be solved in the field of wireless communication. Device-to-Device (D2D) communication is considered to be an effective communication technology to improve network performance in the next generation cellular network system. D2D communication is a new technology that allows terminals to communicate directly by reusing cell resources under the control of the system. It can increase the spectral efficiency of the cellular communication system, reduce the terminal transmission power, and solve the problem of wireless com...

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Problems solved by technology

[0008] In view of the shortcomings of the above technologies, the present invention provides an in-band full-duplex D2D communication link interference elimination method for cellular networks, which solves the problem that the large transmission power of the base station causes interference to in-band full-duplex D2D users

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