Performance Analysis of Finite Population Cellular System Using Channel Sub-rating Policy

This paper illustrates a channel sub-rating allocation policy for finite population cellular system. In this policy, certain channels are permitted to transiently divide into two channels at half the original rate to adapt handoff calls. As a result, one half can be employed to serve the existing call and the other half to serve the handoff request so that we can get rid of forced termination of calls. We propose two system models based on fractional guard channel and sub-rating channel allocation policies with and without queueing of handoff calls which give a significant improvement in the QoS of the cellular network. New call blocking probability, handoff call forced termination probability and the degraded call quality are also investigated to examine the effects of the sub-rating on the QoS. Our policies have the least forced termination probability and the call incompletion probability when compared with the other policies.