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Call Blocking Performance Study for PCS Networks under More Realistic Mobility Assumptions

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Abstract

In the micro-cell-based PCS networks, due to the high user mobility, handoffs occur more frequently. Hence, the classical assumptions, such as the exponential assumptions for channel holding time and call inter-arrival time, may not be valid. In this paper, we investigate the call blocking performance for PCS networks using a semi-analytic and semi-simulation approach. We first construct a simulation model as the base for our performance study, using which the handoff traffic is studied. Then we present a few possible approximation models from which analytical results for call blocking performance metrics can be obtained and compared with the simulation results. We show that for a certain parameter range, such approximations may provide appropriate results for call blocking performance. Finally, using the simulation model, we investigate how various factors, such as the high moments, the variance of cell residence time, mobility factors and the new call traffic load affect the call blocking performance. Our study shows that all these factors may have a significant impact on call blocking performance metrics such as call blocking probability, call incompletion probability and call dropping probability. This research provides a strong motivation for the necessity of reexamining the validity of analytical results obtained from classical teletraffic theory when dealing with the emerging wireless systems.

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Authors and Affiliations

  1. Nortel Networks, USA

    Helen Zeng

  2. Department of Electrical and Computer Engineering, University of Florida, 435 Engineering Building, P.O.Box 116130, Gainesville, FL, 32611, USA

    Yuguang Fang

  3. Erik Jonsson School of Engineering and Computer Science, University of Texas, Dallas, USA

    Imrich Chlamtac

Authors
  1. Helen Zeng
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  2. Yuguang Fang
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  3. Imrich Chlamtac
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Zeng, H., Fang, Y. & Chlamtac, I. Call Blocking Performance Study for PCS Networks under More Realistic Mobility Assumptions. Telecommunication Systems 19, 125–146 (2002). https://doi.org/10.1023/A:1013330625017

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