Congestion avoidance and control
SIGCOMM '88 Symposium proceedings on Communications architectures and protocols
TCP/IP illustrated (vol. 1): the protocols
TCP/IP illustrated (vol. 1): the protocols
Modeling TCP throughput: a simple model and its empirical validation
Proceedings of the ACM SIGCOMM '98 conference on Applications, technologies, architectures, and protocols for computer communication
Vertical handoffs in wireless overlay networks
Mobile Networks and Applications - Special issue: mobile networking in the Internet
Fast and scalable wireless handoffs in supports of mobile Internet audio
Mobile Networks and Applications - Special issue: mobile networking in the Internet
The effect of mobile IP handoffs on the performance of TCP
Mobile Networks and Applications - Special issue: resource management in mobile wireless communication networks
On estimating end-to-end network path properties
Proceedings of the conference on Applications, technologies, architectures, and protocols for computer communication
Equation-based congestion control for unicast applications
Proceedings of the conference on Applications, Technologies, Architectures, and Protocols for Computer Communication
Dynamic behavior of slowly-responsive congestion control algorithms
Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications
The Eifel algorithm: making TCP robust against spurious retransmissions
ACM SIGCOMM Computer Communication Review
Mobile Radio Networks: Networking and Protocols
Mobile Radio Networks: Networking and Protocols
Performance analysis of optimized smooth handoff in mobile IP
MSWiM '02 Proceedings of the 5th ACM international workshop on Modeling analysis and simulation of wireless and mobile systems
Congestion Control in Linux TCP
Proceedings of the FREENIX Track: 2002 USENIX Annual Technical Conference
Policy-Enabled Handoffs Across Heterogeneous Wireless Networks
WMCSA '99 Proceedings of the Second IEEE Workshop on Mobile Computer Systems and Applications
Multiservice link layers: an approach to enhancing internet performance over wireless links
Multiservice link layers: an approach to enhancing internet performance over wireless links
A receiver-centric transport protocol for mobile hosts with heterogeneous wireless interfaces
Proceedings of the 9th annual international conference on Mobile computing and networking
A comparison of mechanisms for improving mobile IP handoff latency for end-to-end TCP
Proceedings of the 9th annual international conference on Mobile computing and networking
ACM SIGMOBILE Mobile Computing and Communications Review
Eliminating aborted data delivery over cellular links
ACM SIGMOBILE Mobile Computing and Communications Review
Modeling wireless links for transport protocols
ACM SIGCOMM Computer Communication Review
Impact of mobility on TCP/IP: an integrated performance study
IEEE Journal on Selected Areas in Communications
Improving the performance of reliable transport protocols in mobile computing environments
IEEE Journal on Selected Areas in Communications
A survey on TCP-friendly congestion control
IEEE Network: The Magazine of Global Internetworking
A soft-handoff transport protocol for media flows in heterogeneous mobile networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Employing cross-layer assisted TCP algorithms to improve TCP performance with vertical handoffs
International Journal of Communication Networks and Distributed Systems
TCP with Explicit Handoff Notification for a Seamless Vertical Handoff
Information Networking. Towards Ubiquitous Networking and Services
The performance of multiple tcp flows with vertical handoff
Proceedings of the 7th ACM international symposium on Mobility management and wireless access
SpeedDetect: a simple TCP extension for handling sudden capacity increase
NGI'09 Proceedings of the 5th Euro-NGI conference on Next Generation Internet networks
A Cross-Layer Approach for Improving TCP Performance in Mobile Environments
Wireless Personal Communications: An International Journal
Understanding the impact of TFRC feedbacks frequency over long delay links
GIIS'09 Proceedings of the Second international conference on Global Information Infrastructure Symposium
EURASIP Journal on Wireless Communications and Networking
Network friendliness of mobility management protocols
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Improving Slow-start based probing mechanisms for flow adaptation after handovers
Computer Networks: The International Journal of Computer and Telecommunications Networking
Performance evaluation of TCP variants to downward vertical handoff
ICOIN'06 Proceedings of the 2006 international conference on Information Networking: advances in Data Communications and Wireless Networks
Improving the performance of rate adaptation schemes in heterogeneous wireless networks
NETWORKING'05 Proceedings of the 4th IFIP-TC6 international conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communication Systems
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An intersystem or vertical handover is a key enabling mechanism for next generations of mobile communication systems. A vertical handover can cause an abrupt change of up to two orders of magnitude in link bandwidth and latency. It is hard for end-to-end congestion control to adapt promptly to such changes. This is especially a concern for slowly responsive congestion control algorithms, such as TCP-Friendly Rate Control (TFRC). TFRC is designed to provide a smooth transmission rate for real-time applications and, therefore, is less responsive to changes in network conditions than TCP. Using measurements and simulation, we show that TFRC has significant difficulties adapting after a vertical handover. TFRC receives only a fraction of TCP throughput over a fast link, but can be grossly unfair to concurrent TCP flows after handover to a slow link. We show that two proposals based on overbuffering and an explicit handover notification are effective solutions to these problems. Using them, TFRC can quickly adapt to new link characteristics after a handover, while otherwise maintaining a smooth transmission rate.