一种负载均衡自组网多信道MAC协议  

A Load-balanced MAC Protocol for Multi-channel Ad-hoc Networks

作　　者：郑相全[1] 张志明 

机构地区：[1]重庆通信学院数字通信与信号处理重点实验室,重庆400035 [2]解放军某部驻重庆地区军事代表室,重庆400030

出　　处：《通信技术》2005年第S1期124-128,共5页Communications Technology

基　　金：国家自然科学基金(No.60472052)资助项目

摘　　要：针对节点具有多个可用信道的自组网,提出了一种基于负载均衡的多信道MAC接入协议,协议采用按需预约的方式进行动态信道分配,通过携带在信道预约消息中的节点邻居状态信息实现节点信道状态的更新。在协议开销增加很小的情况下,每个节点只需要一部半双工收发信机就能够实现在多个信道上高效的数据收发,不需要节点间的时钟同步,极大的降低了对网络节点设备的硬件要求,具有良好的应用前景。仿真结果表明,协议在网络总吞吐量、端到端时延等方面具有优良的性能。A novel load-balanced based medium access control scheme for ad hoc networks with multiple channels available is presented in this paper, which follows an 'on-demand' .method to assign channels to mobile hosts dynamically, and exploits the status information of neighbor nodes piggyback on channel-reservation messages to update the channel status recorded in nodes. The protocol may leads to efficient data transmission on multiple channels with only one half-duplex transceiver each node, at the same time with few control messages exchange as well as little overhead increment, and without clock synchronization, which greatly simplifies the hardware configuration of nodes within network and broads its usage areas. By presenting and analyzing simulation results, the protocol is shown to result in good performance in the aspects of packet delivery ratio and average end-to-end delay, which makes it well adaptive to the dynamic Ad hoc network environment

关 键 词：自组网 信道接入协议 信道分配 多信道 

分 类 号：TN929.5[电子电信—通信与信息系统]