Resource management for QoS support in cellular/WLAN interworking

• Published in: IEEE network Vol. 19; no. 5; pp. 12 - 18
• Main Authors: Song, Wei, Jiang, Hai, Zhuang, Weihua, Shen, Xuemin
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-09-2005; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Access control; Admission control; Call admission control; Cellular; Cellular communication; Cellular networks; Diffserv networks; Intelligent networks; Internet; Internet access; IP networks; Land mobile radio cellular systems; Local area networks; Mobile communications networks; Networks; Quality of service; Resource management; Resources management; Spine; Systems design; Wireless communication; Wireless LAN; Wireless networks
• ISSN: 0890-8044; 1558-156X
• DOI: 10.1109/MNET.2005.1509947

To provide mobile users with seamless Internet access anywhere and anytime/ there is a strong demand for interworking mechanisms between cellular networks and wireless local area networks in the next-generation all-IP wireless networks. In this article we focus on resource management and call admission control for QoS support in cellular/WLAN interworking. In specific, a DiffServ interworking architecture with loose coupling is presented. Resource allocation in the interworking environment is investigated/ taking into account the network characteristics, vertical handoff, user mobility, and service types. An effective call admission control strategy with service differentiation is proposed for QoS provisioning and efficient resource utilization. Numerical results demonstrate the effectiveness of the proposed call admission control scheme.