The admission control for integrated video-conferencing/voice/data services in broadband CDMA networks

• Published in: Computer communications Vol. 23; no. 5; pp. 499 - 510
• Main Authors: Zhang, Liren, Cheng, Xun, Subramanian, K.R.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2000
• Subjects: Admission control; CDMA; Integrated services; Mobile communications; Network utilization; Networks; QoS; Videoconferencing; CDMA; QoS; Integrated services; Admission control; Network utilization
• ISSN: 0140-3664; 1873-703X
• DOI: 10.1016/S0140-3664(99)00204-2

We examine the performance of admission control for the integrated video-conferencing, voice and data services in broadband CDMA networks using analytical methods. The traffic access is based on the Packet Reservation Multiple Access (PRMA) protocol. For the admission control of video-conferencing and voice calls, firstly, we investigate a scheme by introducing a threshold which limits the active subscribers in the network, so that the quality of service (QoS) can be guaranteed. Secondly, we investigate another scheme which uses a Markovian decision process to optimize the performance of voice and video conferencing traffic. The performance of these admission control schemes is evaluated in terms of call blocking probability and idle-slot probability. For data transfer applications, the admission control is investigated under two different schemes: threshold control scheme and graceful degradation control scheme. Their performance is evaluated in terms of throughput, average delay and data packet loss probability.