Title :
On Channel Selection Strategies for Multi-Channel MAC Protocols in Wireless Ad Hoc Networks
Author :
Wormsbecker, I. ; Williamson, Carey
Author_Institution :
Dept. of Comput. Sci., Calgary Univ., Alta.
Abstract :
Multi-channel medium access control (MAC) protocols have recently been proposed to improve the performance of the transmission control protocol (TCP) in IEEE 802.11 wireless ad hoc networks. This paper uses ns-2 network simulations to study the impact of channel selection techniques on multi-channel MAC protocol performance, particularly for the bi-directional multi-channel MAC protocol. Three channel selection strategies are studied: random, lowest channel first, and soft channel reservation. The simulation results identify four distinct scenarios in which data channel frame losses can occur. Among the channel selection strategies evaluated, the soft channel reservation technique is the most effective for the missed reservation problem. This channel selection strategy reduces link-layer data frame losses and provides higher TCP throughput compared to the other channel selection approaches
Keywords :
access protocols; ad hoc networks; channel allocation; transport protocols; wireless channels; IEEE 802.11 wireless ad hoc network; TCP; channel selection strategy; medium access control; multichannel MAC protocol; ns-2 network simulation; transmission control protocol; Access protocols; Ad hoc networks; Communication standards; Intelligent networks; Media Access Protocol; Mobile ad hoc networks; Spread spectrum communication; Throughput; Transport protocols; Wireless application protocol;
Conference_Titel :
Wireless and Mobile Computing, Networking and Communications, 2006. (WiMob'2006). IEEE International Conference on
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0494-0
DOI :
10.1109/WIMOB.2006.1696348
