An adaptive RSVP connection renewing scheme using the address of neighbor routers in mobile IP

In order to improve both performances of the renewing time and the number of hops, we propose an adaptive resource reservation protocol (RSVP) connection renewing scheme using the address of neighbor routers in mobile IP. In the proposed scheme, in order to renew RSVP connection after handoff of a mobile node (MN), each router on RSVP connection records the IP address of the downstream router in addition to the IP address of the upstream router, and the MN sends a SEARCH message. Since the router in the existing RSVP connection renews RSVP connection by means of comparing the IP address of the upstream router, the IP address of the downstream router, and the SEARCH message, the proposed scheme can renew RSVP connection neither setting up whole RSVP connection nor adding RSVP connection. We evaluate the renewing time and the number of hops of the proposed scheme and the conventional schemes by means of computer simulations. At the result, we show that the proposed scheme can improve both performances of the renewing time and the number of hops compared with the conventional schemes.