基于链路干扰模型的802．11s信道分配策略  

Channel Assignment Strategy for 802.11s Based on Interference Model

作　　者：严军荣[1] 张顺颐[1] 李君[1] 王浩云[1] 张牧[2] 

机构地区：[1]南京邮电大学信息网络技术研究所,江苏南京210003 [2]贵阳学院计算机科学系,贵州贵阳550002

出　　处：《南京邮电大学学报（自然科学版）》2009年第1期1-5,共5页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

基　　金：国家高技术研究发展计划(863计划)(2006AA01Z232);江苏省自然科学基金(BK2007603);贵州省自然科学基金重点项目(2007056);江苏省研究生科研创新计划(CX07B_110z)资助项目

摘　　要：从无线链路干扰的角度为802.11s定义的无线Mesh网络提出一种信道分配策略。首先在现有无线干扰模型和传播模型的基础上,通过仿真研究无线干扰对无线Mesh网络性能的影响;然后根据仿真结论提出无线链路干扰模型,同时利用无线Mesh网络流量呈现树状拓扑汇聚的特点对网络拓扑进行有序分解,从而划分出多跳链路干扰和单跳并行链路干扰;最后提出的802.11s信道分配策略的基本思想是采用循环交叉分配信道的方法尽量减少或消除无线多跳链路干扰。In this paper a channel assignment strategy based on wireless link interference model for 802. 11 s wireless mesh network is proposed. At the beginning, existing wireless interference model and trans- mit model are analyzed, and the impact of wireless interference on wireless mesh network is researched by simulation. According to simulation conclusion a wireless link interference model is proposed, and then considering tree-based netflow, the wireless mesh network topology is orderly decomposed so as to mark off the multi-hop link interferences and single-hop parallel interferences. At the end, the proposed 802. 11 s channel assignment strategy is based on the idea of reducing or eliminating wireless multi-hop link in- terference by the way of recycled and intercrossed channel assignment.

关 键 词：无线MESH网络 802.11s 信道分配 干扰 

分 类 号：TP393.17[自动化与计算机技术—计算机应用技术]