QoS provisioning in micro-cellular networks supporting multiple classes of traffic
Wireless Networks - Special issue on wireless multimedia networking
Supporting mobile multimedia in integrated services networks
Wireless Networks - Special issue on wireless multimedia networking
On optimal call admission control in cellular networks
Wireless Networks
Access control of data in integrated voice/data CDMA systems: benefits and tradeoffs
IEEE Journal on Selected Areas in Communications
Joint admission/congestion control for wireless CDMA systems supporting integrated services
IEEE Journal on Selected Areas in Communications
Cellular multicode CDMA capacity for integrated (voice and data) services
IEEE Journal on Selected Areas in Communications
Admission policies for integrated voice and data traffic in CDMA packet radio networks
IEEE Journal on Selected Areas in Communications
Admission and GoS control in a multiservice WCDMA system
Computer Networks: The International Journal of Computer and Telecommunications Networking
International Journal of Wireless and Mobile Computing
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Call admission control (CAC) in multimedia wireless communications is to guarantee quality of service (QoS) to mobile users and to achieve a high resource utilization efficiency. It is a challenging issue due to user mobility, limited radio spectrum, heterogeneous nature of multimedia traffic. This paper proposes a CAC policy for a wireless system supporting both constant-rate voice calls and available-rate data calls. The parameters of the proposed policy is determined in a systematic way by using an optimization approach. Soft QoS (relaxed target QoS) is introduced to make a compromise between the QoS levels of the voice and data calls, respectively, in a heavy traffic load situation. Numerical results show that the proposed CAC policy can guarantee the QoS of all the users under most traffic conditions considered.