METHOD OF ALLOCATING MULTI-CHANNEL IN IEEE 802.11 NETWORK FOR IMPROVING PERFORMANCE OF RELAY MULTI-CAST

摘要

A multi-channel allocation method for improving the performance of relay multicast in an IEEE(Institute of Electrical and Electronics Engineers)802.11 network is provided to be capable of selecting optimum relay nodes by receiving a report on interference coverage and candidate relay nodes from each node, so that interference is minimized by using multi-channel among the selected relay nodes, consequently throughput is increased. Information of an MS(Mobile Station) is received to bind APs(Access Points) into sets for minimizing interference. Channels are allocated from a set where the most nodes are included, by using information on the sets, and the information received from the MS is analyzed to form an interference map, to check whether the channels are reusable. When the channels are allocated, the APs decide whether each relay node influences nodes of other relay groups. The APs allocate the same channels to groups where the interference does not occur, and allocate other channels to groups where the interference occurs, to minimize usage of the channels.