Resource Allocator for Non Real-Time Traffic in Wireless Networks Using Fuzzy Logic

Authors:
Janaki Bandara;Xuemin Shen;Zafrin Nurmohamed
Affiliations:
Centre for Wireless Communications, Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1/ E-mail: jbandara@bbcr.uwaterloo.caxshen@bbcr.uwaterloo.ca;Centre for Wireless Communications, Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1/ E-mail: znurmoha@bbcr.uwaterloo.ca
Venue:
Wireless Personal Communications: An International Journal
Year:
2002

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Abstract

Providing efficient access to a large user population with variantservice requirements in wireless communications networks poses a verychallenging problem. Resource allocation in the wireless domain shouldtake into account bandwidth limitations and fading effects inherent towireless channels, while accommodating for resource constraintsencountered in wireline networks. In this paper, a fuzzy resourceallocator is proposed in order to facilitate the efficient allocation ofnetwork resources in the wireless domain. The network preferentiallyallocates its resources to real-time (RT) traffic sources. Usingeffective transmission rate statistics of non real-time (NRT) trafficdsources as a measure of fading channel conditions, the fuzzy allocatoroptimally allocates the remaining resources to NRT traffic. Simulationsshow that the fuzzy allocator can reduce delay and incurs fewerretransmissions for NRT traffic. An overall improvement in wirelesschannel utilization is demonstrated.