一种基于负载均衡的动态多信道自组网MAC协议  

A Dynamic Multi-channel MAC Protocol Based on Load Balancing for Ad Hoc Networks

作　　者：彭艺[1] 周正中[1] 查光明[1] 

机构地区：[1]电子科技大学通信学院,成都610054

出　　处：《计算机科学》2005年第10期44-45,79,共3页Computer Science

摘　　要：自组网的信道是多跳共享的,使用传统的单信道接入协议会带来隐终端和暴露终端等问题,而目前提出的多信道协议没考虑到负载均衡问题会导致系统性能下降。在本文中提出一种基于负载均衡的动态多信道接入协议,该协议将可用频带分为一个控制信道和多个数据信道,源站与目的站在控制信道上交换控制分组信息来决定在最佳的数据信道上传输数据分组,信道选择是基于信道接收功率最大的原则。仿真结果表明,它比单信道协议有更好的性能。Ad hoc network is a kind of special multi-hop network. Those traditional access protocols based on single channel can＇t he use by Ad hoc network because it will bring the problems of hidden and exposed terminal, and the multi-channel access protocol can＇t suit for Ad hoc network because the problem of load balancing. This paper presents a novel dynamic multi-channel MAC protocol based on load balancing that uses one control channel and K data channels. The source station uses an exchange of control packets on the control channel to decide on the best channel to send the data packet on. Channel selection is based on maximizing the signal-to-interference plus noise ratio at the receiver. The preliminary simulation results shows that it has good performance than the signal channel protocol.

关 键 词：自组网 多信道 负载均衡 信道接入协议 MAC协议 负载均衡 多信道 自组网 信道接入协议 系统性能 数据信道 控制信道 暴露终端 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TN915.04[自动化与计算机技术—计算机科学与技术]