基于 BRKGA 的 TDMA 调度设计与实现

Shuai Xiaoying, Yin Yuxia
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引用次数: 0

摘要

无线 Ad hoc 网络中的信息可能需要从源节点到目标节点的中间多跳转发。为了在 Ad hoc 中找到最佳的无竞争时隙调度方案,本文提出了一种基于 BRKGA(有偏随机密钥 GA)的 TDMA(时分多址)调度方案。该算法将第 k 代种群分为精英组和其他组。精英解直接复制到下一代。从精英组中随机选取一个父代,从其他群体中随机选取另一个父代,交叉产生一个新的解。第 k 代群体中最差的 Pm 解决方案被突变体取代。仿真结果表明,基于 BRKGA 的 TDMA 在降低帧长度和提高信道利用率方面表现出更好的性能。
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Design and Implementation of TDMA Scheduling Based on BRKGA
Messages in wireless Ad hoc networks may require intermediate multi-hop forwarding from the source to the target node. To find an optimum contend-free time slots scheduling solution in Ad hoc, a TDMA (Time Division Multiple Access) scheduling scheme based on BRKGA (Biased Random-key GA) is proposed. The algorithm divides the population of generation k into elite group and rest group. The elite solutions are copied directly to the next generation. One parent from the elite group and another parent from the rest population are randomly selected to crossover a new solution. The worst Pm solutions of the population of generation k are replaced by the mutants. The simulation results demonstrate that the TDMA based on BRKGA exhibits better performance in terms of lower frame length and higher channel utilization.
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