A reverse channel call admission control scheme based on total received power for CDMA systems supporting integrated voice/data services

Wei Li; Hang Chen; Dharma P. Agrawal

doi:10.1108/17427370780000145

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International Journal of Pervasive Computing and Communications

ISSN: 1742-7371

Online from: 2005

Subject Area: Information and Knowledge Management

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A reverse channel call admission control scheme based on total received power for CDMA systems supporting integrated voice/data services

Document Information:
Title:	A reverse channel call admission control scheme based on total received power for CDMA systems supporting integrated voice/data services
Author(s):	Wei Li, (Motorola Urbana-Champaign Design Center, Champaign, IL 61820, USA), Hang Chen, (OBR Center of Distributed and Mobile Computing, Department of Electrical Computer Engineering and Computer Science, University of Cincinnati, Cincinnati, OH 45221-0030, USA), Dharma P. Agrawal, (OBR Center of Distributed and Mobile Computing, Department of Electrical Computer Engineering and Computer Science, University of Cincinnati, Cincinnati, OH 45221-0030, USA)
Citation:	Wei Li, Hang Chen, Dharma P. Agrawal, (2006) "A reverse channel call admission control scheme based on total received power for CDMA systems supporting integrated voice/data services", International Journal of Pervasive Computing and Communications, Vol. 2 Iss: 2, pp.103 - 112
Keywords:	Call admission control, CDMA, Markov chain model, Soft handoff
Article type:	Research paper
DOI:	10.1108/17427370780000145 (Permanent URL)
Publisher:	Emerald Group Publishing Limited
Abstract:	In code-division multiple-access (CDMA) systems, the number of mobile users that each cell can support is limited by the total received power or interference received at each base station (BS) and can vary with time. The total received power can be used as an indicator of traffic load in call admission control. In this paper, we propose a call admission control (CAC) scheme based on the total received power for CDMA systems supporting integrated voice/data services. Based on the current measure of the received power, we develop an algorithm to estimate the updated total received power due to a new incoming call. We analyze the optimal admission threshold for both power limited cells and interference limited cells. We model the system by a multi-dimensional Markov chain and compute the system performance in terms of new call blocking probability, forced termination probability of voice calls, average transmission delay of data calls and outage probability. We compare our results with an existing degradation scheme.