分群协议中冲突与拓扑信息误差研究

摘要

分析了实际应用中无线网络典型多址接入方式CSMA和TDMA的常见冲突,以及在网络分群结构中可能引起的拓扑信息误差,提出了度量这种拓扑信息误差的指标,并给出了几种改进措施.结合802.15.4协议实现了分群算法,并用NS2网络仿真工具分析了通信距离、移动速度对该指标的影响.%After the analysis of the collision in the CSMA and TDMA multiple access methods, and information error of topologies information in clustering protocol, a measurement index is introduced for the information error, and several methods are given in order to improve the index. The algorithm is combined with IEEE 802.15.4 protocol, and remarkable simulation conclusions are drawn from NS2 with the analysis of the impact of communication distance and movement speed.