ABSTRACT

With the advent of technology, a large number of wireless and mobile devices are being connected to the internet increasingly giving the users access to the internet while on move. This mobility has been supported through the Internet Protocol known as Mobile IP, allowing the users with mobile devices to have continuous network connectivity to the internet without changing their IP addresses when moving from one network to another. Mobility is supported in both versions of IP, using MIPv4 in IPv4 network, and MIPv6 in IPv6 network. The framework of MIP moves around the core concepts like throughput, delay (handover latency) and packet loss. These concepts are the metrics of the quality of service (QoS) that must be efficient in providing consistent, predictable data delivery service over the networks. While on move, the Mobile Node (MN) undergoes a handover process, in which a MN is disconnected from one network and connected to another. The time period of disconnection during the handover process is known as the handover latency and it may cause a major problem of real–time packet loss, i.e., a number of packets may not reach their destination. The major delay in handover is due to the duplicate-address detection (DAD) process. Several solutions have been proposed to overcome these problems in MIPv6. However, no solution seems to be the optimum. The framework in this paper suggests the removal of DAD procedure and configuration of a new Care of Address for the MN by the NAR (New Access Router) and the use of efficient buffer management mechanism for improving the two metrics of, and enhancing the QoS in MIPv6.