Abstract: Transmission power control (TPC) is a key technique in wireless networking. In this paper, A Power control and Scheduling scheme in Multi-Rate wireless mesh networks (PSMR) is introduced to improve the throughput and the fairness in the context of multi-rate Wireless Mesh Network (WMN). Traffic patterns of the system are analyzed based on a model of conflict graph, and a differential evolution based algorithm is proposed to optimize the time allocation vector. Simulations demonstrate that PSMR can improve the throughput and also can strike a balance between throughput and fairness.

Key words: wireless mesh network, transmission power control, multi-rate, throughput, fairness, differential evolution algorithm

摘要： 传输功率控制（TPC）技术是提高无线网络性能的关键技术之一。针对无线Mesh网络（WMN）的特点，提出了一种在多速率WMN环境下功率控制与调度机制（PSMR），该机制以系统的吞吐率和公平性为目标，利用冲突图思想对网络进行分析，建立了多目标规划的数学模型，并采用微分进化算法对其进行求解。模拟测试表明，PSMR能有效提高系统吞吐率，改善系统的公平性。

关键词: 无线Mesh网络, 传输功率控制, 多速率, 吞吐率, 公平性, 微分进化算法