A control-theoretic approach to flow control
SIGCOMM '91 Proceedings of the conference on Communications architecture & protocols
Vertical handoffs in wireless overlay networks
Mobile Networks and Applications - Special issue: mobile networking in the Internet
TCP congestion control with a misbehaving receiver
ACM SIGCOMM Computer Communication Review
On Things to Happen During a TCP Handover
LCN '03 Proceedings of the 28th Annual IEEE International Conference on Local Computer Networks
F-RTO: an enhanced recovery algorithm for TCP retransmission timeouts
ACM SIGCOMM Computer Communication Review
PERCOM '04 Proceedings of the Second IEEE International Conference on Pervasive Computing and Communications (PerCom'04)
Effect of vertical handovers on performance of TCP-friendly rate control
ACM SIGMOBILE Mobile Computing and Communications Review
Improving TCP Performance during Soft Vertical Handoff
AINA '05 Proceedings of the 19th International Conference on Advanced Information Networking and Applications - Volume 2
Protocol enhancements for intermittently connected hosts
ACM SIGCOMM Computer Communication Review
Determining an appropriate sending rate over an underutilized network path
Computer Networks: The International Journal of Computer and Telecommunications Networking
VA-TCP: a vertical handoff-aware TCP
Proceedings of the 2007 ACM symposium on Applied computing
The performance of multiple tcp flows with vertical handoff
Proceedings of the 7th ACM international symposium on Mobility management and wireless access
Evaluation of an information service for enhanced multiaccess media delivery
Proceedings of the 5th International ICST Mobile Multimedia Communications Conference
Distributed information service architecture for overlapping multiaccess networks
Multimedia Tools and Applications
Performance evaluation of network mobility handover over future aeronautical data link
Computer Communications
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In this paper we study the performance of TCP with a vertical handoff between access networks with widely varying link characteristics. TCP being an end-to-end protocol has performance problems as its behaviour depends on the end-to-end path properties which are likely to be affected by a vertical handoff. We propose a set of enhancements to the TCP sender algorithm that leverage on explicit cross-layer information regarding the changes in the access link delay and bandwidth. We carry out a systematic study to identify the problems of regular TCP and compare the performance of the regular TCP with the performance of the enhanced TCP algorithms in various handoff scenarios between access networks having different bandwidth and delay characteristics. Our experiments show that with cross-layer notifications TCP performance can be improved significantly in most vertical handoff scenarios.