Resource allocation method used for full duplex cellular network physical layer safe scene

Abstract

The invention discloses a resource allocation method used for a full duplex cellular network physical layer safe scene, aims at a full duplex cellular network where a plurality of upstream users, downstream users and eavesdroppers, adopts BGRA(Bipartite Graph Based Resource Allocation Scheme), constructs a bipartite graph according to a full duplex cellular network, converts the multi-user resource allocation problem into the bipartite graph maximum weight matching problem, an optimal subgraph is a subgraph with the sum of all edge weights being the largest, and through an acquired optical subgraph G' of a bipartite graph, reasonably allocates Resource Blocks (RBs) and power resources. The resource allocation method used for the full duplex cellular network physical layer safe scene can realize mutual cooperation of uplinks and downlinks in the full duplex system, thereby enhancing safety performance of the physical layer; and can also obtain quasi-optimal safety capacity of a full duplex cellular system with relatively low computation complexity, thereby achieving the purpose of improving the system safety capacity.

Description

Technical field [0001] The invention belongs to the field of wireless communication, relates to full-duplex network communication technology, and specifically relates to a resource allocation method applied to a full-duplex cellular network in a physical layer security scenario, which effectively improves the physical layer of the network by reasonably allocating spectrum and power resources Safety performance. Background technique [0002] Nowadays, in order to meet the increasing demand for data transmission rate, various communication technologies are widely proposed. Full-duplex communication technology can effectively improve the spectrum efficiency by sending and receiving data at a wireless node at the same time, so it is regarded as a key technology in the future LTE-Advanced network. For full-duplex technology, the most important challenge comes from the problem of self-interference, that is, the strong interference generated by the transmitting antenna of the full-dupl...

AI Technical Summary

Problems solved by technology

[0005] However, the existing work seldom studies the physical layer security scenarios of multi-user full-duplex networks. At present, there is still a lack of resource allocation schemes suitable for full-duplex networks in physical layer security scenarios. In this scenario, the security of the entire network Low capacity, difficult to meet application needs

Images