Simplified Joint Call and Packet Level Teletraffic Analysis of CAC Strategies for VoIP Traffic in Wireless Networks
In this paper, a simplified joint call and packet level tele-traffic analysis method for performance evaluation of Call Admission Control (CAC) strategies for Voice over IP (VoIP) traffic over wireless access networks is proposed. The admission criterion of new sessions of the considered CAC strategies is based on either the total number of sessions or the number of active sessions. Arrivals and completions of VoIP sessions, on/off activity detection, and periodic and constant length packet generation of individual VoIP active sessions are modeled. Packet buffering, adaptive modulation coding, and proportional fair sharing scheduling are also considered.