Performance analysis for voice/data integration on a finite-buffer mobile system

Personal communication service (PCS) networks offer mobile users diverse te lecommunication applications, such as voice, data, and image, with differen t bandwidth and quality-of-service (QoS) requirements. This paper proposes an analytical model to investigate the performance of an integrated voice/d ata mobile network with finite data buffer in terms of voice-call blocking probability, data loss probability, and mean data delay. The model is based on the movable-boundary scheme that dynamically adjusts the number of chan nels for voice and data traffic. With the movable-boundary scheme, the band width can be utilized efficiently while satisfying the QoS requirements for voice and data traffic. Using our model, the impact of hot-spot traffic in the heterogeneous PCS networks, in which the parameters (e.g., number of c hannels, voice, and data arrival rates) of cells can be varied, can be effe ctively analyzed. In addition, an iterative algorithm based on our model is proposed to determine the handoff traffic, which computes the system perfo rmance in polynomial-bounded time. The analytical model is validated by sim ulation.