RSVP extensions for real-time services in heterogeneous wireless networks

Authors:
Nen-Chung Wang;Jyh-Woei Jiang;Yung-Fa Huang
Affiliations:
Department of Computer Science and Information Engineering, National United University, Miao-Li 360, Taiwan, ROC;Department of Computer Science and Information Engineering, Chaoyang University of Technology, Taichung 413, Taiwan, ROC;Graduate Institute of Networking and Communication Engineering, Chaoyang University of Technology, Taichung 413, Taiwan, ROC
Venue:
Computer Communications
Year:
2007

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Abstract

In the near future, wireless and mobile users will have increased demands for seamless roaming across different types of wireless networks, so it's a significant issue of how to guarantee the quality of service (QoS) and support a variety of services. In this paper, we propose RSVP extensions for real-time services to guarantee the QoS with RSVP in heterogeneous wireless networks. We set an intersystem, ''QoS Manager,'' between the gateways of wireless local area networks (WLANs) and cellular networks to manage the mobility of mobile users, and use the scheme of resource pre-reservation to reduce the delay time of re-routing while handoff occurs and guarantee the QoS of real-time services efficiently. Simulation results show that our proposed approach can reduce 52% waste of the whole network resources as the number of the WLANs is set to 40.