Bridging the gap between dynamic and static methods for cell planning

Frequency reuse distance is a crucial parameter in cellular system design that determines the service quality, which is usually measured in terms of the signal-to-interference ratio (SIR). The instantaneous SIR is a random variable; theoretically, its characterization is completely provided by the outage probability. In cellular engineering, however, frequency reuse planning is usually based on a simple static design, without taking into account the dynamic propagation effects. The static method has the advantage of simplicity, but failing to indicate the system dynamic performance. In this paper, we determine a simple mathematical expression between the static and dynamic SIRs whereby a new cell planning technique is developed. The new technique makes it possible to incorporate dynamic considerations into a static design thereby bridging the gap between the two methods. We also use the new results to study the system capacity, revealing the dependence of the system capacity on the minimum required outage probability.