Survey on Channel Allocation Techniques for Wireless Mesh Network to Reduce Contention with Energy Requirement

M. Pounambal
2016 Indian Journal of Science and Technology  
Objective: In Wireless Mesh Networks the spectrum should be utilized effectively with better Quality of Service (QoS), synchronized time management and minimum delay. Method: The existing channel allocation methods needs improvement in QoS parameters such as end-to-end delay, ripple factor and time factor in accessing the channel. To improve the QoS further, the admission control drop and block probability, efficient channel reservation approach is the better solution which leads to better QoS
more » ... eads to better QoS even for delay sensitive applications. A performance analysis is made among the existing methods for contention reduced channel allocation methods, energy conservation channel allocation methods and as last method Admission Control Drop_Block probability methods. The networks are analyzed by considering the metrics such as Packet loss rate, End-to-end delay and Throughput. The channel count is virtually increased to support for dense networks by utilizing already used channels and by reserving few channels for dynamic requirement for normal and multimedia traffic data. The channel allocation methods are simulated using NS-2. faced is interference, because of multiple overlapping channels during channel access time. In case of non-overlapping channels, very low interference may exist. The issues generally considered in WMNs are related to the deployment of wireless devices, the range of frequency to be assigned to these wireless devices, proper link scheduling and routing etc. Though the non-overlapping channels are available, they cannot be used for all applications due to government regulations. Due to this restriction, the interference during channel assignment needs to be considered. In dense areas, the data exchange may be enormous; therefore, the usage of channel also increases drastically. The medium access layer is accessed by millions of devices; hence it is to be regularized to avoid collision 1 , end-to-end delay and to maintain the reliability
doi:10.17485/ijst/2016/v9i32/86996 fatcat:omdzenibq5cwjmyi3icwvhgj5q