Resampling for Wireless Access

The well known problem among most random access protocols in wireless networks is that the throughput drops rapidly in heavy load. To cope with this problem, one has to control to the load ooered to a network. Unlike the traditional backoo policy in Ethernet where backoo occurs after collision, in this paper we propose various control schemes based on the new idea of resampling, where carrier sensing ability is used to determine whether a backoo command should be issued or not. We show from various experiments that our schemes are capable of controlling the ooer load to the optimal ooer load. As a result, the throughputs of these schemes are kept close to the network capacity in heavy load.