A fuzzy resource controller for non-real-time traffic in wireless networks

Abstract

For wireless networks, providing efficient access to a large user population with variant service requirements poses a very challenging problem. Resource control in wireless networks must consider limitations of bandwidth and fading effects inherent to the wireless channel, along with resource allocation issues encountered in wireline networks. In this paper, a fuzzy resource controller is developed. The fuzzy controller preferentially allocates wireless resources to higher priority real-time (RT) traffic. Using effective transmission rate statistics as a measure of fading channel conditions for the non-real-time (NRT) traffic, the controller optimally allocates remaining resources to NRT traffic. Simulations show that the fuzzy controller can reduce delay and retransmissions for NRT traffic. An improvement in channel utilization is also realized.