Practical vertical handover mechanisms between satellite and terrestrial networks

Authors:
MinSu Shin;ManKyu Park;DeockGil Oh;ByungChul Kim;JaeYong Lee
Affiliations:
Satellite Broadcasting & Telecommunications Convergence Research Team, ETRI, Daejeon, Korea;Satellite Broadcasting & Telecommunications Convergence Research Team, ETRI, Daejeon, Korea;Satellite Broadcasting & Telecommunications Convergence Research Team, ETRI, Daejeon, Korea;Department of Information Communications Engineering, Chungnam National University, Daejeon, Korea;Department of Information Communications Engineering, Chungnam National University, Daejeon, Korea
Venue:
ruSMART/NEW2AN'10 Proceedings of the Third conference on Smart Spaces and next generation wired, and 10th international conference on Wireless networking
Year:
2010

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Abstract

In this paper, we propose practical vertical handover mechanisms for interworking between satellite and terrestrial network, which include new handover procedures and TCP congestion control. To support seamless handover, it should be considered L2-L4 layer operation all together. The proposed mechanisms include a vertical handover procedure using IEEE 802.21 and a TCP performance enhancing mechanism by adopting efficient congestion control scheme. IEEE 802.21 standard provides unified event messages from link layer to upper layer for helping seamless handover regardless whatever the physical layer interfaces are. The proposed TCP congestion control uses TCP Explicit Handover Notification which informs TCP sender directly of new available link bandwidth. We used ns-2 network simulator to evaluate our proposed mechanisms. Simulation results show that our mechanism can support a seamless handover and provide a better Internet service for fast train when there are different types of access networks such as a satellite and terrestrial network.