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Quality of Service ( QoS ) Provisioning in IP-based Broadband Wireless Mobile Networks

In this paper, we propose the seamless switching scheme of RSVP (resource ReSerVation Protocol) branch path for soft handoff in IP micro-mobility domain. Typically, in order to minimize the handoff service disruption of RSVP flows, RSVP message delays and signaling overheads should be minimized. We firstly propose the rerouting scheme of RSVP branch path at a crossover router (CR) at every handoff event, and secondly propose the reservation scheme of new RSVP branch path between the CR and new BS in advance while the existing reservation path is maintained. Eventually, we show that this scheme could provide the QoS guarantee for RSVP flows during handoff with simulation and examples.