RSVP Context Extraction in IP Mobility Environments

This paper addresses RSVP context extraction, a complement to the end-to-end RSVP context transfer scheme we proposed previously. Based on RSVP/ns using network simulator ns2 platform, how to extract RSVP context required is described, so as to establish RSVP context information directly in the new added routers along the new data path for the real-time applications after the mobile node undergoes handover instead of re-initiating RSVP signaling to establish RSVP states. Therefore, this enables the real-time applications to get the same QoS forwarding process promptly, minimizing the handover service disruption and avoiding initiating the end-to-end RSVP signaling from scratch. The RSVP context is presented also. Moreover, RSVP context information extracted is examined by simulation experiment based on RSVP/ns using ns2. The experiment results show that the scheme transferring extracted RSVP context to the new added routers to re-establish RSVP states has mostly the same performance as the scheme re-initiating RSVP signaling to establish RSVP states