Multicast in multi radio multi channel wireless mesh networks
Kai Han, Mingjun Xiao, Liusheng Huang, Shuangping Chen · 2006
In a multi-hop wireless mesh network,each mesh node can be equipped with multiple radios tuned to multiple channels.This brings a new challenges to the multicast problem,which was mostly studied in the single channel wireless networks.A tree based multicast approach was presented for the multi radio multi channel wireless mesh networks.In the approach,the concept of relaying channel redundancy was proposed for the first time,and it was proved that finding a multicast tree with minimal channel redundancy was a NP-complete problem.An approximate algorithm was also proposed for the multicast tree construction,as well as a collision-free scheduling algorithm for low latency multicasting based on the multicast tree.Simulation results show the effectiveness of the approach.