A resource allocation method supporting full-duplex d2d communication in a cellular network

Abstract

The present invention requests protection of a resource allocation method based on full-duplex D2D communication in a cellular network. The introduction of full-duplex (Full Duplex, FD) D2D (Device-to-Device) communication in the cellular network can reduce the burden on the base station, reduce the energy consumption of the terminal, and expand the coverage of the cell. However, sharing resources between D2D users and cellular users brings certain co-channel interference to the system, and the mutual interference can be reduced through reasonable resource allocation. A resource allocation algorithm based on maximum weight matching is proposed in this paper. Under the premise that the algorithm can guarantee the quality of service requirements of cellular users, it also guarantees the minimum requirements for D2D link communication. The resource allocation relationship between cellular users and D2D users in the system is equivalent to the vertex pairing relationship in graph theory. The maximum weight matching algorithm in the algorithm reasonably allocates wireless resources between D2D user pairs and cellular users, effectively reduces the interference between cellular users and D2D users, obtains better fairness, and maximizes the throughput of the system at the same time.

Description

Technical field [0001] The invention belongs to the field of mobile communication technology, and particularly relates to resource allocation supporting full-duplex short-distance direct communication technology in a cellular network. Background technique [0002] With the rapid development of fourth-generation mobile communication technology, more and more communication terminal access requirements have made spectrum resources increasingly scarce. In order to solve the increasingly scarce wireless spectrum resources, and at the same time to make more reasonable use of wireless spectrum resources, there is an urgent need for a new resource utilization method, which can more flexibly and efficiently use the full-duplex D2D (Device- to-Device) communication technology came into being. D2D communication makes the resource allocation of hybrid networks different from traditional cellular networks. At this time, D2D users share cellular resources. Although D2D in half-duplex mode ca...

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(References: Ali, S.Rajatheva, N.Latva-aho, M.Full duplex device-to-device communication in cellular networks[C].IEEE Networks and Communications(EuCNC),2014European Conference on Bologna.2014:1- 5.) Compared with half-duplex, this scheme can effectively improve system throughput and spectrum utilization, but the system only considers the scenario where a pair of D2D users and a cellular user exist, and does not consider multiple pairs of D2D A situation where a user shares resources with multiple cellular users is far from the real world

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