Nagla O. Mohamed, Yanbu Industrial College, KSA

The performance of the combined guard channels and mobile handoff call admission control is studied. If a handoff call arrives, and there are not enough channels for its service, it is queued in a finite buffer. Two customer types, narrowband (voice calls) and wideband (data, video and media) are considered. Matrix algorithmic techniques are used to solve the balance equations to calculate the different performance measures of the system. The results indicate that when handoff calls are queued, handoff call dropping is reduced for both types of calls and there is an increase in the bandwidth utilization. There is no noticeable change in the blocking probability of new calls. Increasing the size of the queue, led to further reduction in the handoff call dropping and increase in the bandwidth utilization.

Call admission control, Wireless Networks, Mobile Networks, Guard channels, Mobile assisted handoff