Traffic analysis of partially overlaid AMPS/IS-136 systems

We consider the problem of calculating the traffic allowable for a certain grade of service in a cellular network employing both AMPS and IS-136 channels. The dual-mode capability of the IS-136 users enables the system to assign them to AMPS channels if IS-136 channels are blocked, hence the two pools of users cannot be treated independently. An analytical method for the calculation of the traffic is derived and the actual capacity improvements obtained by a partial deployment of IS-136 are shown. We also consider the case of reconfigurable transceivers at the base station and derive the traffic allowable. It is seen that a significant increase in traffic is achieved by this option