一种基于IEEE802.11的无线自组网MAC协议  

MAC protocol for wireless Ad hoc network based on IEEE802.11

作　　者：李晓峰[1] 鄢楚平[1] 

机构地区：[1]华北计算技术研究所通信与移动计算技术研究室,北京100083

出　　处：《计算机应用》2007年第2期275-277,281,共4页journal of Computer Applications

基　　金：总装备部基金项目(513160302)

摘　　要：基于IEEE802.11DCF提出了一种应用于无线自组网的媒质接入控制协议,该协议包括网络适应性退避算法和拥塞反馈两个关键机制。协议的主要思想是根据节点周围实际竞争状况和网络拥塞情况进行包调度。仿真结果表明,提出的机制有效地降低了平均端到端时延和数据丢包率,提高了信道接入公平性。Based on the IEEE802.11DCF, a Medium Access Control （MAC） protocol was proposed for wireless ad hoc network. It consisted of two key mechanisms： network adaptive backoff algorithm and congestion feedback mechanism. The main idea of proposed protocol was to schedule packet according to real contention status around the node and network congestion situation. The simulation results show that the proposed scheme can effectively reduce the average end-to-end delay, mitigate packet dropped ratio, and improve fairness of channel access.

关 键 词：媒质接入控制 分布式协调功能 退避算法 拥塞反馈 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]