Relay selection and resource information optimization method, system, computer equipment and application
An optimization method and resource information technology, applied in the field of millimeter-wave D2D communication, can solve problems such as inability to obtain system performance and difficult to solve directly, and achieve the effect of reducing inter-system interference, reducing inter-link interference, and reducing total power
Active Publication Date: 2022-02-08
NORTHWEST UNIV
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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
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[0117] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0118] Aiming at the problems existing in the prior art, the present invention provides a relay selection and resource information optimization method, system, computer equipment and application. The present invention will be described in detail below in conjunction with the accompanying drawings.
[0119] Such as figure 1 As shown, the relay selection and resource information optimization method provided by the present invention includes the following steps:
[0120] S101: Establish a joint relay selection and resource optimization model to maximize the sum rate, and decompose it into two sub-problems of relay selection an...
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The invention belongs to the technical field of millimeter wave D2D communication, and discloses a method, system, computer equipment and application for relay selection and resource information optimization. Two sub-problems of relay selection and resource optimization; secondly, construct a weighted bipartite graph, and convert the relay selection into a "one-to-one" weighted matching problem, and use the maximum matching method based on the Hungarian algorithm to obtain the optimal relay selection; finally , for the sub-problem of power optimization and time slot allocation, using the principle of constrained concave-convex process, the original objective function is equivalent to the form of "convex-convex", and the convex function after the minus sign is linearly approximated to obtain an approximate convex optimization problem, Iteratively optimize it until convergence. The present invention can effectively reduce the influence of interference and obstacle blocking on system throughput, and improve the millimeter wave D2D communication system and rate.
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 ...
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IPC IPC(8): H04W16/22H04W40/12H04W40/16H04W40/22
CPCH04W16/22H04W40/12H04W40/16H04W40/22Y02D30/70
Inventor 李小亚张汉卿贺晨彭进业梁霄
Owner NORTHWEST UNIV