Abstract
Some of the problems that face network designers deal with the optimization of: cell size, number of customers and services provided. However tradeoffs are required between these objectives. For example to increase the number of customers, designers have been reducing cell size. But increasing the number of customers by decreasing the cell size causes the number of handoff operations to increase which results in an increase in the number of blocked calls. Moreover, this results in demand for more bandwidth and mechanisms for optimizing channel use. This paper suggests a protocol that fairly balances the percentages of new-calls blocking and handover-calls dropping. To achieve its objective, the protocol uses a new strategy for guard channels. A Java language based simulator was developed for testing the protocol. Inputs to the simulator were generated using the Marseene Twister random number generator. Rresults of simulation substantiate the hypothesis that the proposed protocol improves the Quality of Service (QoS) of new calls without significantly affecting the QoS of handoff calls.