Resampling for wireless access

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