Call admission scheme of voice data integrated traffic of mobile cellular network under DCA environment

In this paper, we propose a call admission control scheme for mobile cellular network. The proposed scheme is based upon the dynamic channel allocation (DCA) mechanism, where a cell is allowed to borrow the unused channels of its surrounding cells and it´s done when all the nominal channels are already occupied by the traffic. In the paper, we consider a multi-service system that supports voice/data integrated service. All the nominal channels provide services to different traffic types and when these channels are fully utilized by the mixed traffic, the borrowing of channel is done under the DCA environment. In this scheme, the borrowed channels are assigned to provide services to handoff calls only. Here we analyze the proposed scheme based on Markovian chain. Our analysis reveals the fact that the proposed scheme greatly reduces forced termination due to handoffs ensuring the better QoS in a mobile cellular network