A routing and spectrum resource management method for terminal direct-to-cooperative relay network

Abstract

The present invention relates to a resource management algorithm for joint optimization of relay selection, frequency spectrum allocation and power control, which is applied in a Machine-to-Machine (M2M) relay communication scenario of two-hop transmission. The four-dimensional joint optimization problem proposed in this paper is a non-deterministic polynomial combinatorial optimization problem, which cannot be solved in polynomial time. In order to find a suboptimal solution to this problem, the algorithm is divided into two phases. In the first phase, the spectrum resource reuse problem from relay to receiver is described as a two-dimensional matching problem. In the second stage, the resource reuse problem between M2M users, relay users and sender-to-relay users is described as a three-dimensional matching problem. In the second stage, the transmission power of the M2M user is optimized when establishing the user's favorite list. When seeking the suboptimal solution to the four-dimensional joint optimization problem, this algorithm greatly reduces the computational complexity by reducing the problem dimension, and has a good performance in terms of energy efficiency, and at the same time can increase the average number of served users.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a resource management algorithm applied in an M2M (Machine-to-Machine) relay communication scenario for joint optimization of relay selection, spectrum allocation and power control, which can ensure cellular and Based on the quality of service of M2M equipment, the matching between equipment pairs, relay terminals and spectrum resources is optimized to obtain better energy efficiency and effectively solve the problems of user pairing and spectrum resource allocation. Background technique: [0002] With the emergence and development of communication network technology, especially the popularization and application of wireless communication, it has a huge impact on people's way of life. M2M communication is a communication technology developed in recent years. It is closely related to the Internet of Things. The goal is to enable all machines and equipment to have ...

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Problems solved by technology

[0005] In the previous research on relay communication, the selection of the relay terminal based on the fastest transmission rate, or the resource allocation based on the maximum SINR was often considered, without considering the energy efficiency of the equipment when using relay communication.

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