Admission Policy in Wireless Systems with Overlapping Coverage
In a typical cellular network, one finds a considerable portion of the service areas are served by multiple base stations. The so called overlapping cells provide opportunities to improve the traffic handling capacity or quality of service of the network. However, the limited overlapping coverage results in different quality of service to different subsets of mobile terminals and hence causes unfairness. We propose a simple admission policy that equalizes the quality of service across the system. Furthermore, through this policy and the reduction in the variance of the quality of service, we gain considerable improvements in traffic handling capacity and probability of forced termination of calls in progress. We develop a model based on a Markov Modulated Poisson process and quantify the benefits from this policy.
KeywordsFailure Probability Admission Control Blocking Probability Bell System Technical Journal Guard Channel
Unable to display preview. Download preview PDF.
- D. Everitt, “Traffic Engineering of the Radio Interface for Cellular Mobile Networks,” Proceedings of the IEEE, vol. 82, no 9, pp. 1371–1382, Sept 1994.Google Scholar
- B. Jabbari, “Teletraffic Aspects of Evolving and Next Generation Wireless Communication Networks,” IEEE Personal Communications, pp. 4–9, Dec. 1996.Google Scholar
- X. Lagrange, P. Godlewski and S. Tabbane, Réseaux GSM-DCS, Editions Hermès, Paris, 1997.Google Scholar
- G. Morales-Andres, M. Villen-Altamirano, “An approach to Modelling Subscriber Mobility in Cellular Radio Networks,” Telecom Forum 87, Geneva, Nov 1987.Google Scholar
- R. Thomas, H. Gilbert, G. Maziotto, “Influence of the Moving of the Mobile Stations on the Performance of a Radio Mobile Cellular Network,” Proc. of the Third Nordic Seminar on Digital Land Mobile Radio Communications, Sept. 1988.Google Scholar
- G. J. Foschini, B. Gopinath and Z. Miljanic, “Channel Cost of Mobility,” IEEE Transaction on Vehicular Technology, Vol 42, no 4, pp.414–424, November 93.Google Scholar
- K.S. Meier-Hellstern, “The Analysis of a Queue Arising in Overflow Models,” IEEE Transactions on Communication, Vol 37, no 4, pp.367–372, April 89.Google Scholar