短波自组织网络HFMACA协议研究

Research of HFMACA Protocol for HF Self-Organized Network

在研究无线多路访问碰撞回避协议MACAW的基础上,针对短波无线自组织网络的分布式控制、网络拓扑结构动态变化、存在隐藏终端和暴露终端等特点,对MACAW进行了适当改进,提出了短波多路访问碰撞回避协议HFMACA,详细介绍了其基本思想、运行机制,并对其网络容量、业务成功率、业务传输时延等性能进行了仿真分析,给出了网络业务量与业务成功率及传输时延之间的关系,对短波自组织网MAC协议的研究和设计具有一定的参考意义。

Based on the research of the protocol of multiple access collision avoidance for wireless LAN （MACAW）, and according to the characteristic of wireless self-organized network for high frequency （HF） communication system, such as distribute control, network topology dynamic changes, hidden ter minal and exposed terminal etc. , this paper proposes an improvement of MACAW protocol and provides a new muhiple access collision avoidance （HFMACA） scheme. The basic thought and mechanism of this new scheme is introduced in detail in this paper. The performances such as capacity, traffic success rate, traffic delay etc. , are simulated, and their relationship is analyzed and contrasted, thus to give an impor tant reference for the research of HF self-organized network MAC protocol.