Dynamic resource allocation in line-of-sight microcells

A 10-cell, 10-channel line-of-sight (LOS) microcellular environment with Poisson arrivals and exponentially distributed holding times is stimulated. The performance of cellular systems for personal communications networks (PCNs) is evaluated. Call blocking, bumping, and dropping probabilities, as affected by fast fading, power control, and traffic load, for LOS, 900-MHz microcellular environments are discussed. It is established that DRA (dynamic resource allocation) using local information only does not result in a performance penalty. In fact, in the cases of interest, it performs significantly better than fixed channel allocation, increasing capacity by about 20%, or even as much as 60% with power control. It is shown that fast fading results in a limited increase, about 2-3 times the blocking probability, while the use of power control translates directly, and consistently, into a significant increase in traffic handling capacity.<
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