ABSTRACT
The available of multiple radio interfaces in mobile nodes provides the means and incentive to apply multihoming to support node mobility between networks. Stream Control Transmission Protocol (SCTP) with the Dynamic Address Reconfiguration extension provides a good solution to support node mobility or handovers between networks. Compared to the techniques based on network layer Mobile Internet Protocol (MIP) and application layer Session initiation Protocol (SIP), the
of Node
SCTP-based vertical handover scheme has many advantages, including simpler network architecture, improved throughput and delay performance. Seamless handovers that minimizes the disruption of the end-to-end connection is particularly important for multimedia communications. In this chapter, we give an overview of the node mobility problem and mobile SCTP (mSCTP) as a general solution of this problem. We then describe how we apply mSCTP to multiple wireless interfaces supporting different wireless access technologies to support seamless vertical handover support across heterogeneous wireless networks. We also present an error recovery scheme to improve SCTP performance during vertical handover when packet losses occur in wireless links. Simulations results are presented to demonstrate the effectiveness of the proposed schemes.
