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An Enhanced Hand-Off Policy to Reduce Blocking Probability in Two-LayerWireless Systems

  • Tae-Jin Lee
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2668)

Abstract

In this paper, we consider a two-layer hierarchy, i.e. micro and umbrella layer, cellular system, and propose a new hand-off mechanism to minimize call blocking probability of high-speed hand-off calls with reasonable performance of new and low-speed hand-off calls. We used double control for highspeed hand-off calls in micro and umbrella layer. By formulating Markov chains and using queueing analysis, we have derived call blocking probabilities for ours and those of other hand-off schemes. We have shown that our proposed policy can indeed improve blocking probabilities of high-speed hand-off calls, which leads to improved system performance. Our policy can serve as a guideline to design hand-off policies within wireless systems or inter-working policies between systems.

Keywords

Blocking Probability Guard Channel Channel Assignment Strategy Umbrella Cell Call Blocking Probability 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Tae-Jin Lee
    • 1
  1. 1.School of Information and Communication EngineeringSungkyunkwan UniversitySuwonKOREA

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