Priority Based Call Admission Control Protocol for Videoconference Traffic in Wireless/Cellular Networks

Abstract

In this paper, we propose a new CAC protocol which provides videoconference traffic taking multiple services like voice, text and multimedia at a time for multiclass users. In this proposed protocol we use priority on basis of account balance of customers and serve the calls with higher priority first. The higher the account balance higher is the priority. The call continues until the user closes the call or the balance is zero or the user is taking considerable amount of resources causing starvation. Video packet delay requirements are strict because delays are annoying to a viewer. An adaptive scheduling scheme to allocate optimum rate for each traffic queue is proposed to minimize the scheduling delay. By simulation experiments, we show that the proposed protocol achieves optimum rate with reduced delay, maximum use of bandwidth and maximum Quality of Service (QoS).