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Interference based Call Admission Control for Wireless Ad Hoc Networks

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2 Author(s)
Sridhar, K.N. ; Nat. Univ. of Singapore ; Mun Choon Chan

In this paper, we propose a call admission control mechanism for wireless ad hoc networks called interference-based call admission control (iCAC). iCAC is unique in that it does not treat interference uniformly instead classifies interference based on estimates of the position of the interfering nodes. iCAC relies on two novel techniques: (1) estimation of position of the interfering nodes (2) fair allocation using bandwidth acquisition and rate control. By incorporating these techniques, iCAC is able to increase the estimated available bandwidth substantially without overloading the network. We compare iCAC with perceptive admission control (PAC) and IEEE 802.11 without admission control. Simulation results show that iCAC is able to admit substantially more requests than PAC, achieves more than 80% of the throughput of IEEE 802.11 and at the same time maintains very low packet loss rate and average delay comparable to PAC

Published in:

Mobile and Ubiquitous Systems: Networking & Services, 2006 Third Annual International Conference on

Date of Conference:

July 2006