Abstract
In high-capacity cellular radio communication systems, efficient channel use is achieved by covering the service area with large numbers of small cells. In such environments, a cell boundary crossing by moving users can generate many hand-off attempts. To reduce the forced termination of calls in progress, this paper considers such a priority scheme that some channels are reserved for hand-off calls and a finite buffer-capacity of N is offered to hand-off calls. We present an exact analysis and an efficient matrix-analytic procedure to numerically evaluate the performance of the system such as blocking probability, channel utilization, queue length and delay. Numerical results show how priority can be provided to hand-off calls according to the number of reserved channels and buffer size.
