一种适用于Ad hoc网络的动态多组异步多信道MAC协议  

Dynamic Multi-group Asynchronous Multi-channel MAC Protocol for Ad Hoc Network

作　　者：方理才[1] 许宗泽[1] 雷磊[1] 

机构地区：[1]南京航空航天大学信息科学与技术学院,江苏南京210016

出　　处：《小型微型计算机系统》2011年第2期228-232,共5页Journal of Chinese Computer Systems

基　　金：航空科学基金项目(20090152001)资助;江苏省产学研前瞻性联合研究项目(BY2009100)资助;江苏省普通高校自然科学研究计划项目(09KJB520007)资助;南京航空航天大学科研启动项目(S0918-042)资助

摘　　要：提出一种基于节点物理地址为初始分配信道的动态多组异步多信道媒介访问控制协议(DMAM-MAC).在该协议中,各节点根据自己的物理地址确定初始主信道,并且与同处在一个主信道上的相邻节点构成一个信道组;随着网络运行,各节点根据自身的业务流,动态改变主信道,加入新的信道组,从而有效提高了频率空间复用度.仿真试验证明,与IEEE802.11、AM-CP相比,DMAM-MAC协议在显著提高Ad hoc网络平均吞吐量的同时,还能有效降低数据包平均延迟.A dynamic multi-group asynchronous multi-channel MAC protocol （DMAM-MAC） based on node physical address as ini- tial distribution ehannd is presented in this paper. In this protocol, Each node according to their physical address determine the main channel firstly, and form a channel group with the adjacent nodes having the same main channel; With the operation of the networkt each node in accordance with its own traffic, dynamically changes its main channel, and joins a new channel group, so as to effectively improve the spatial frequency multiplexing. Simulation results show that, compared with the IEEE802.11 and AMCP , this protocol can improve the average throughput of the network significantly and reduce the average packet delay simultaneously.

关 键 词：AD hoe网络 信道组 媒介访问控制 动态多组 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]