Seamless streaming media for heterogeneous mobile networks
Mobile Networks and Applications
Multiservice vertical handoff decision algorithms
EURASIP Journal on Wireless Communications and Networking
Employing cross-layer assisted TCP algorithms to improve TCP performance with vertical handoffs
International Journal of Communication Networks and Distributed Systems
ubiSOAP: A Service Oriented Middleware for Seamless Networking
ICSOC '08 Proceedings of the 6th International Conference on Service-Oriented Computing
The performance of multiple tcp flows with vertical handoff
Proceedings of the 7th ACM international symposium on Mobility management and wireless access
GIIS'09 Proceedings of the Second international conference on Global Information Infrastructure Symposium
EURASIP Journal on Wireless Communications and Networking
Congestion control for sudden bandwidth changes in TCP
International Journal of Communication Systems
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Withthe help of Mobile IP/IPv6, on-going TCP sessions can remain active when the mobile node hands over from one network to another. In particular, in a soft vertical handoff, packet loss due to the switching of networks can be avoided. However, TGP still faces several performance degradation issues due to the change of network bandwidth and propagation delay. During vertical handoff, some undesirable phenomenon may erroneously trigger TCP congestion control operations and thus degrade the TCP performance In this paper, we study the TCP behaviors during soft vertical handoff from fast link to slow link. In particular; we focus on TCP timeout problem caused by increased network round-trip time, and propose three schemes (fast response, slow response and ACK delaying) to solve this problem. These schemes require only minor modifications on network layer of the end hosts, without any change on TCP and intermediate network routers. Simulation results show that these schemes can effectively improve the TCP performance during soft vertical handoff.