Dynamic RSVP for mobile IPv6 in wireless networks

Wireless communications services are widely used and growing rapidly. To make mobile stations and notebook computers for connection to the Internet is now a must. It is believed that RSVP can provide guaranteed bandwidth and QoS during the multimedia transmission over the Internet. Many members of the Internet research and industry community have already contributed to the design and development of RSVP. Dynamic RSVP (DRSVP) proposed by us can provide different reserved bandwidth needed by different video resolutions to different receiver nodes, because the display devices used in the receiver nodes might be different. In this paper, we further expand DRSVP to support mobile IPv6-based hosts (nodes) in wireless networks with performance analysis. It provides four important characteristics when the mobile receiver host moves to a new network domain. First, it provides a more flexible mechanism to adjust the reserved resource on nodes, including receiver node(s), sender node and intermediate node(s) along the reserved path. Second, it does not waste precious resource and bandwidth on the Internet to transmit unnecessary multimedia traffic. Third, it achieves low switching latency. Fourth, it accomplishes a short packet transmission time after the new re-routing path is established. Most important, it can dynamically adjust the transmitted MPEG-4-based traffic without costing many efforts, when the available resource and bandwidth change