Abstract: This paper analyzes the performance of reservation guard channel with handoff priority. For blocking rate and dropping rate are two discrepant variables, we propose a variable of service grade that integrates the two variables as metrics for system service quality. The result shows that the service grade can trade off well between the blocking rate and dropping rate, and can also decide the optimal number of reservation guard channel and the system maximum load.

Key words: call admission control, Markov chain, grade of service, guard channel, blocking rate, dropping rate