Seamless Handover for IMS over Mobile-IPv6 Using Context Transfer

TL;DR

This paper proposes predictive and reactive context transfer mechanisms to enable seamless handover in IMS over Mobile IPv6, reducing latency and maintaining QoS during user mobility.

Contribution

It introduces novel context transfer schemes and QoS negotiation methods specifically designed for IMS over Mobile IPv6, enhancing mobility support.

Findings

Reduced handover latency demonstrated in simulations

Effective preservation of QoS parameters during handover

Improved seamlessness in multimedia services

Abstract

Mobility support for the next generation IPv6 networks has been one of the recent research issues due to the growing demand for wireless services over internet. In the other hand, 3GPP has introduced IP Multimedia Subsystem as the next generation IP based infrastructure for wireless and wired multimedia services. In this paper we present two context transfer mechanisms based on predictive and reactive schemes, to support seamless handover in IMS over Mobile IPv6. Those schemes reduce handover latency by transferring appropriate session information between the old and the new access networks. Moreover, we present two methods for QoS parameters negotiations to preserve service quality along the mobile user movement path. The performances of the proposed mechanisms are evaluated by simulations.