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Call admission and control for quality-of-service provisioning in cellular networks

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3 Author(s)
Das, S.K. ; Dept. of Comput. Sci., North Texas Univ., Denton, TX, USA ; Sen, S.K. ; Jayaram, R.

We propose a call admission and a call control algorithm for optimistic quality-of-service (QoS) provisioning for multimedia traffic in the third generation wireless networks. Unlike most of the existing schemes which over-reserves wireless bandwidth our scheme uses a user classification algorithm and reserves bandwidth only in the destination cells for a certain class of users, called departing users. For wireless systems requiring continuous spectrum allocation, a novel approach called bandwidth compaction (similar to memory compaction in operating systems) is proposed for efficient utilization of the available spectrum. The multimedia traffic is also classified as real-time and non-real-time. A Markov modulated Poisson process (MMPP) based queueing model is proposed to capture the call admission priority of real-time calls over non-real-time ones, which are buffered for future admission in case of preemption. Detailed simulation experiments are performed to compare our scheme with a similar existing scheme. We observe performance improvements as high as 24% for call blocking probability and 12% for call admission and successful hand-off probability

Published in:

Universal Personal Communications Record, 1997. Conference Record., 1997 IEEE 6th International Conference on

Date of Conference:

12-16 Oct 1997

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