A load and QoS aware scheduling algorithm for multi-channel multi-radio wireless mesh networks

The great potential of Wireless Mesh Networks (WMNs) is their autonomy of being built and formed without the need of any infrastructure. An IEEE 802.11s standard draft has been lately designed to define the WMNs framework and architecture. Multi-channel multi-radio wireless mesh networks (MCMR WMNs) have been introduced to improve system performance. However, interfaces and channels management in MCMR WMNs becomes essential to achieve the network performances rise. In this paper, we propose a solution that defines a MAC layer module named Interface Management Module (IMM) under a hybrid channel assignment. The IMM manage the multi-channel radio interface based on scheduling algorithms. A dynamic scheduling algorithm has been proposed. The algorithm is based on traffic profiling and dynamic weights computing for channels scheduling.

[1]  Alec Wolman,et al.  A multi-radio unification protocol for IEEE 802.11 wireless networks , 2004, First International Conference on Broadband Networks.

[2]  Roshdy H. M. Hafez,et al.  Throughput Improvement in Multi-Radio Multi-Channel 802.11a-Based Wireless Mesh Networks , 2010, 2010 IEEE Global Telecommunications Conference GLOBECOM 2010.

[3]  Nitin H. Vaidya,et al.  Qos-aware channel scheduling for multi-radio/multi-channel wireless mesh networks , 2009, WINTECH '09.

[4]  Suman Banerjee,et al.  Distributed channel management in uncoordinated wireless environments , 2006, MobiCom '06.

[5]  Chadi Assi,et al.  Joint Routing, Scheduling and Variable-Width Channel Allocation for Multi-Hop WMNs , 2010, 2010 IEEE International Conference on Communications.

[6]  C. Siva Ram Murthy,et al.  Interleaved carrier sense multiple access: an efficient MAC protocol for ad hoc wireless networks , 2003, IEEE International Conference on Communications, 2003. ICC '03..

[7]  C. Siva Ram Murthy,et al.  Demand Based State Aware Channel Reconfiguration Algorithm for Multi-Channel Multi-Radio Wireless Mesh Networks , 2010, 2010 INFOCOM IEEE Conference on Computer Communications Workshops.

[8]  Joongsoo Ma,et al.  A Novel Multi-channel Multi-radio Wireless Mesh Node Architecture for NS-2 , 2009, 2009 WRI International Conference on Communications and Mobile Computing.

[9]  Sangjin Hong,et al.  Performance Optimizations for Deploying VoIP Services in Mesh Networks , 2006, IEEE Journal on Selected Areas in Communications.