摘要
在移动Ad-Hoc网络中,传统的时分多址接入协议强烈地依赖于网络拓扑的精确信息,因此在移动环境下它们的效率和鲁棒性很容易遭到破坏.该文提出了一种新的基于冲突矢量的拓扑未知冲突避免算法及相应的协议,该算法支持各个节点独自完成随拓扑变化的动态时隙分配自适应,使信道竞争与共享冲突最小化,形成了一种不依赖于详细的网络拓扑信息,以及自适应网络和负载变化的动态TDMA协议.仿真结果显示,相对于传统的拓扑未知TDMA协议,网络规模越大、邻节点数越多或者业务量越大,新协议对网络吞吐量的性能提升就越大.
The conventional TDMA protocols for Ad-Hoc networks intensively depend on accurate topology information. Therefore, their efficiency and robustness are easily destroyed in mobile network. In this paper a topology-transparent dynamical protocol with a novel collision-free based on collision vector computing for mobile Ad-Hoc networks is presented. This method avoids collisions utilizing the two-hop active nodes information and is adaptive to the changes of topology and load. Simulation results show the number of its neighbors is larger or the traffic load is higher, more is the throughput improved.
出处
《湘潭大学自然科学学报》
CAS
CSCD
北大核心
2009年第4期109-114,共6页
Natural Science Journal of Xiangtan University
基金
湖南省教育厅基金项目(09C960)
