信息网络安全 ›› 2022, Vol. 22 ›› Issue (9): 76-85.doi: 10.3969/j.issn.1671-1122.2022.09.009

• 技术研究 • 上一篇    下一篇

基于链路冲突图嵌入的信道干扰测量与优化方法

梁言1, 李冬2, 赵贻竹1, 于俊清1,2()   

  1. 1.华中科技大学网络空间安全学院,武汉 430074
    2.华中科技大学网络与计算中心,武汉 430074
  • 收稿日期:2022-06-20 出版日期:2022-09-10 发布日期:2022-11-14
  • 通讯作者: 于俊清 E-mail:yjqing@hust.edu.cn
  • 作者简介:梁言(1997—),男,湖北,硕士研究生,主要研究方向为无线网络优化|李冬(1979—),男,湖北,高级工程师,博士,主要研究方向为入侵检测、数据挖掘与分析、无线网络跨层优化|赵贻竹(1976—),女,河南,副教授,博士,主要研究方向为软件定义网络与安全|于俊清(1975—),男,内蒙古,教授,博士,主要研究方向为数字媒体处理与检索、网络安全、多核计算与流编译
  • 基金资助:
    国家重点研发计划(2020YFB1805600)

Channel Interference Measurement and Optimization Based on Link Conflict Graph Embedding

LIANG Yan1, LI Dong2, ZHAO Yizhu1, YU Junqing1,2()   

  1. 1. School of Cyber Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
    2. Network and Computation Center, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2022-06-20 Online:2022-09-10 Published:2022-11-14
  • Contact: YU Junqing E-mail:yjqing@hust.edu.cn

摘要:

为解决现有信道测量与优化方法忽略链路状态导致无法优先降低实际链路所受干扰问题,文章针对校园网等大规模无线网络环境,提出一种基于链路冲突图嵌入的信道干扰测量与优化方法。在测量阶段,引入链路状态和调整系数,对不同链路间的干扰进行分级,构造基于信道干扰分级的链路冲突图。同时使用图嵌入算法对链路冲突图进行嵌入,借助嵌入后的向量描述无线网络的整体干扰情况,提高测量的准确性;采用基于滑动窗口的部分采样方法以低采样率准确反映链路所受干扰。在网络优化阶段,采用基于最大割问题的优化算法计算最优无线网络信道配置策略,降低实际链路所受干扰。

关键词: 冲突图, 图嵌入, 信道测量, 信道优化

Abstract:

In order to solve the problem that the existing channel measurement and optimization methods ignore the link state, which leads to the failure to prioritize the reduction of the actual link interference, a dynamic channel based on link conflict graph embedding was proposed for large-scale wireless network environments such as campus networks. Interference measurement and optimization methods. In the measurement phase, link status and adjustment coefficients were introduced to classify the interference between different links, and a link conflict graph based on the channel interference classification was constructed. At the same time, the graph embeding algorithm was used to embed the link conflict graph, and the overall interference situation of the wireless network was described by the embedded vector, which improved the accuracy of the modeling. The partial sampling method based on sliding window was adopted to accurately reflect the interference of the link at a low sampling rate. In the network optimization stage, the optimization algorithm based on the maximum cut problem was used to calculate the optimal wireless network channel configuration strategy, which effectively reduced the interference on the actual link.

Key words: conflict graph, graph embedding, channel measurement, channel optimization

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