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基于网络分割的无线传感器网络多信道MAC协议

程 宾,慈林林,田成平,杨明华   

  1. 1. 北京理工大学 计算机学院,北京 100081;2. 第二炮兵装备研究院,北京 100085; 3. 北京工商大学 计算机与信息工程学院,北京100048
  • 出版日期:2014-11-25 发布日期:2014-12-17
  • 基金资助:
    国家自然科学基金资助项目(61063042);中国博士后科学基金资助项目(201104753);北京市自然科学基金资助项目(4132025)

Multi-channel MAC protocol based on network partitioning for wireless sensor networks

  • Online:2014-11-25 Published:2014-12-17

摘要: 无线传感器网络中,可用正交信道数目较少和噪声干扰问题制约着多信道MAC协议性能的提升,结合数据采集应用的特点,提出一种基于网络分割的多信道MAC协议。在最小化网络总干扰值的基础上,网络分割引入碰撞因子进一步优化子树结构、降低树内干扰。并利用基于图着色理论的分配策略为每棵子树分配一条高质量信道。仿真实验结果表明,该协议显著提高了网络吞吐量,并且大幅降低了传输延迟和分组丢失率。

Abstract: The limited amount of available orthogonal channels and noise interference are two major issues to constrain performances of multi-channel MAC protocols in wireless sensor networks (WSN). In conjunction with features of data gathering networks, a partitioning-based multi-channel MAC protocol was designed. Initially it partitioned network into several sub-trees with lower collision factor, without increasing the total value of interference around the whole network. Furthermore, it adopted a coarse-grained channel assignment strategy on basis of graph coloring theory, in order to ensure each sub-tree work on a relative optimal channel. Simulation results show that the proposed MAC protocol can significantly improve throughput and reduce end-to-end latency and packet loss.

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