Multi-Path Transmission Algorithm for End-to-End Seamless Handover across Heterogeneous Wireless Access Networks

Shigeru KASHIHARA  Katsuyoshi IIDA  Hiroyuki KOGA  Youki KADOBAYASHI  Suguru YAMAGUCHI  

Publication
IEICE TRANSACTIONS on Communications   Vol.E87-B   No.3   pp.490-496
Publication Date: 2004/03/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Internet Technology IV)
Category: Mobile Networking
Keyword: 
seamless handover,  multihoming,  multi-path transmission,  SCTP,  real-time communication,  

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Summary: 
In future mobile networks, new technologies will be needed to enable a mobile host to move across heterogeneous wireless access networks without disruption of the connection. In the past, many researchers have studied handover in such IP networks. In almost all cases, special network devices are needed to maintain the host's mobility. Moreover, a host cannot move across heterogeneous wireless access networks without degradation of the goodput for real-time communication, although a mobile host with multiple network interfaces can connect to multiple wireless access networks. For these reasons, we consider that a mobile host needs to manage seamless handover on an end-to-end basis. In this paper, we propose a multi-path transmission algorithm for end-to-end seamless handover. The main purpose of this algorithm is to improve the goodput during handover by sending the same packets along multiple paths, minimizing unnecessary consumption of network resources. We evaluate our algorithm through simulations and show that a mobile host gains a better goodput.