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The next-generation (4G) wireless communication systems focus on the seamless integration of various existing wireless communication networks, such as integrating the third-generation (3G) cellular networks and wireless local area network (WLAN). Resource management (RM) is one of the essential techniques to improve both overall resource utilization and quality-of-service (QoS) provisioning. This...
This paper aims to provide quality of service (QoS) for IEEE 802.11 wireless local area network (WLAN) system integrated with UMTS cellular network. Due to heterogeneous QoS metrics in WLAN and cellular network, our scheme jointly considers the characteristics of the link and network layers. We adopt a scheduling algorithm called IIT (inserting idle time) in the link layer to reduce the packet loss...
This paper aims to provide quality of service (QoS) for IEEE 802.11 wireless local area network (WLAN). Specifically, we develop a new scheduling algorithm in link layer to support multimedia services with guaranteed QoS in WLAN. The proposed scheduling algorithm makes use of the idle system time to reduce average packet loss of real-time (RT) variable-bit-rate (VBR) services, while satisfying required...
The seamless internetworking among various communication networks is in demand to provide anywhere, anytime connectivity with high data rate and enhanced service quality. In this paper, we propose a novel internetworking architecture between WLAN and UMTS cellular networks, hybrid coupling with radio access system (HCRAS), based on IPv6, mobile IP, and fast hand off techniques. Inheriting loose coupling...
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