Relay selection and resource information optimization method and system, computer equipment and application

Abstract

The invention belongs to the technical field of millimeter wave D2D communication, and discloses a relay selection and resource information optimization method and system, computer equipment and application, and the method comprises the steps: building a joint relay selection and resource optimization model enabling the sum rate to be maximized, and decomposing the joint relay selection and resource optimization model into a relay selection sub-problem and a resource optimization sub-problem; secondly, constructing a weighted bipartite graph, enabling relay selection to be equivalent to a one-to-one weighted matching problem, and obtaining optimal relay selection by utilizing a maximum matching method based on a Hungary algorithm; and finally, for power optimization and time slot allocation sub-problems, utilizing a constraint concave-convex process principle to enable an original target function to be equivalent to a convex-convex form, performing linear approximation on the convex function subjected to sign reduction to obtain an approximate convex optimization problem, and iteratively optimizing the approximate convex optimization problem until convergence. The influence of interference and obstacle blocking on the throughput of the system can be effectively reduced, and the millimeter wave D2D communication system and rate are improved.

Description

technical field [0001] The present invention belongs to the technical field of millimeter wave D2D communication, and in particular relates to a relay selection and resource information optimization method, system, computer equipment and application. Background technique [0002] At present, in the millimeter-wave D2D communication system, the research on the interference management mechanism combined with the anti-blocking strategy can effectively control the interference between parallel transmission links, improve link connectivity and the number of parallel transmission links, and further improve network throughput. quantity. The anti-blocking millimeter wave transmission methods can be mainly divided into three categories: ① Anti-blocking method based on reflection path transmission and reception; ② Anti-blocking method based on multi-base station connection; ③ Anti-blocking method based on relay forwarding. Among them, the anti-blocking method based on the reflection ...

AI Technical Summary

Problems solved by technology

Existing schemes optimize the design of these three separately, and cannot obtain better system performance

The three-part joint optimization problem constructed in this patent models various disturbances in the system. The problem constructed is a non-convex mixed integer programming. The problem itself is NP-hard and difficult to solve directly

Images