Performance of the Double Tunneling with Handoff Prediction in Mobile IP Network

Mobile IP protocols allow a mobile host to send and receive packets addressed with its home IP address, regardless of the IP address of its current point of attachment in the Internet. Four routing schemes, home, optimal, hierarchical and pointer forwarding approaches are discussed with regard to the handoffs. In the existing methods packets are delayed and lost during the change of the care-of-address from an old foreign agent to a new agent. To handle the packet loss and delay problem we propose a double tunneling method in which received packets at an agent are copied and sent to both the old and new foreign agents. The method is backed up by the predicted handoffs. Computational results show that the double tunneling method outperforms existing handoff procedure in view of lost and delayed packets.