摘要
无线多通道MAC协议McMAC采用了基于同步通道切换机制的MAC框架,具有良好的抗干扰能力和吞吐量性能。然而该协议中存在的节点"消失"现象会导致大量的无效发送,造成带宽和能量浪费。提出了一种适用于该协议的新型通道访问控制机制,不仅可有效解决McMAC协议中存在的无效发送问题,而且具有良好的节能效果。仿真结果表明新的通道访问控制机制能够大幅提高McMAC协议的网络吞吐量和能量效率。
The wireless muhi-channel MAC protocol,McMAC,which adopts a MAC framework based on the synchronized channel hopping mechanism,has good anti-interference capability and throughput performance.Whereas the ＂node disappearing＂ phenomenon in this protocol results in a large amount of invalid transmissions,which is a great waste of bandwidth and energy.This paper proposes a new channel access control mechanism which is suitable for this protocol.It not only solves the invalid transmission problem in MeMAC,but also has good energy-saving effect.Simulation results show that the new channel access control mechanism dramatically improves the throughput performance and the energy efficiency of the original McMAC protocol.
出处
《计算机工程与应用》
CSCD
北大核心
2007年第35期27-29,34,共4页
Computer Engineering and Applications
基金
国家自然科学基金( the National Natural Science Foundation of China under Grant No.60374072
No.60434030) 。
关键词
无线
多通道
MAC协议
通道访问控制
wireless
muhi-channel
MAC protocol
channel access control
