Survey of multi-channel MAC protocols for IEEE 802.11-based wireless Mesh networks  

作　　者：LEI Hong-jiang GAO Chao GUO Yong-cai ZHANG Zhi-zhong 

机构地区：[1]College of Optoelectronic Engineering, Chongqing University, Chongqing 400050, China [2]School of Commtmication and Information Engineering, Chongqing University of posts and telecommunications, Chongqing 400065, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2011年第2期33-44,共12页中国邮电高校学报（英文版）

基　　金：supported by the International Scientific and Technological Cooperation Program (S2010GR0902);the Chongqing Municipal Excellent Talents (2010);the Scientific Research Fund of Municipal Education Commission of Chongqing (KJ080507);the Natural Science Foundation of Chongqing University of Posts and Telecommunications (A2009-53)

摘　　要：This paper reviews multi-channel media access control（MAC） protocols based on IEEE 802.11 in wireless Mesh networks（WMNs）.Several key issues in multi-channel IEEE 802.11-based WMNs are introduced and typical solutions proposed in recent years are classified and discussed in detail.The experiments are performed by network simulator version 2（NS2） to evaluate four representative algorithms compared with traditional IEEE 802.11.Simulation results indicate that using multiple channels can substantially improve the performance of WMNs in single-hop scenario and each node equipped with multiple interfaces can substantially improve the performance of WMNs in multi-hop scenario.This paper reviews multi-channel media access control（MAC） protocols based on IEEE 802.11 in wireless Mesh networks（WMNs）.Several key issues in multi-channel IEEE 802.11-based WMNs are introduced and typical solutions proposed in recent years are classified and discussed in detail.The experiments are performed by network simulator version 2（NS2） to evaluate four representative algorithms compared with traditional IEEE 802.11.Simulation results indicate that using multiple channels can substantially improve the performance of WMNs in single-hop scenario and each node equipped with multiple interfaces can substantially improve the performance of WMNs in multi-hop scenario.

关 键 词：wireless Mesh networks multi-channel protocol medium access control layer IEEE 802.11 

分 类 号：TN915.04[电子电信—通信与信息系统] TN925.93[电子电信—信息与通信工程]