带拥塞控制的多预约MAC协议  

Multiple Reserving MAC Protocol with Congestion Control

作　　者：王朝翔[1] 韦蓉[2] 丁炜[2] 

机构地区：[1]华北计算技术研究所通信和移动计算室,北京海淀区100083 [2]北京邮电大学通信网络综合技术研究所,北京海淀区100876

出　　处：《电子科技大学学报》2008年第5期765-768,共4页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(60772109)

摘　　要：针对802.11协议,在数据接入过程中,缺少为高优先级数据流提供充分保护机制的问题,提出了一种带拥塞控制的多预约的MAC协议。在接入过程中,该协议采用多预约机制确保高优先级数据流的接入成功概率,在中间节点通过接入控制,以一定的概率拒绝低优先级数据流的接入请求,保护转发节点避免拥塞。仿真结果表明,该方法有效地保护了高优先级流的端到端吞吐量、时延和丢弃率。To solve the problem of lack adequate protection mechanism for high priority data flows, in 802.11 media access process, a multiple reserving media access control （MAC） protocol with congestion control is proposed. In access process, the protocol uses multiple reserving mechanism to protect successful access probability of high priority flows. And the forwarding nodes rejects low priority flows＇ access request with probability through admission control, in order to avoid congestion in them. The simulation result shows that the protocol proposed in the paper can effectively protects end-to-end throughput, delay and reduce drop ration of high priority flows.

关 键 词：无线自组网 拥塞控制 媒体接入控制 多预约 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]