Optimization flow control—I: basic algorithm and convergence
IEEE/ACM Transactions on Networking (TON)
SOSP '01 Proceedings of the eighteenth ACM symposium on Operating systems principles
Utility-based rate control in the Internet for elastic traffic
IEEE/ACM Transactions on Networking (TON)
A Class of End-to-End Congestion Control Algorithms for the Internet
ICNP '98 Proceedings of the Sixth International Conference on Network Protocols
A duality model of TCP and queue management algorithms
IEEE/ACM Transactions on Networking (TON)
End-to-end congestion control schemes: utility functions, random losses and ECN marks
IEEE/ACM Transactions on Networking (TON)
Service overlay networks: SLAs, QoS, and bandwidth provisioning
IEEE/ACM Transactions on Networking (TON)
Adaptive control algorithms for decentralized optimal traffic engineering in the internet
IEEE/ACM Transactions on Networking (TON)
Priority Pricing in Utility Fair Networks
ICNP '05 Proceedings of the 13TH IEEE International Conference on Network Protocols
Designing DCCP: congestion control without reliability
Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
End-to-end optimal algorithms for integrated QoS, traffic engineering, and failure recovery
IEEE/ACM Transactions on Networking (TON)
Multimedia streaming via TCP: An analytic performance study
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Decentralized optimal traffic engineering in connectionless networks
IEEE Journal on Selected Areas in Communications
Fundamental design issues for the future Internet
IEEE Journal on Selected Areas in Communications
TCP Vegas: end to end congestion avoidance on a global Internet
IEEE Journal on Selected Areas in Communications
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Understanding the TCP congestion control mechanism from a global optimization point of view is not only important in its own right, but also crucial to the design of other transport layer traffic control protocols with provable properties. In this paper, we derive a global utility function and the corresponding optimal control law, known as TCP control law, which maximizes the global utility. The TCP control law captures the essential behaviors of TCP, including slow start, congestion avoidance, and the binary nature of congestion feedback in TCP. We find that the utility function of TCP is linear in the slow start phase and is proportional to the additive increase rate and approaches the well-known logarithm function as the data rate becomes large in the congestion avoidance phase. We also find that understanding the slow start phase with a fixed threshold is critical to the design of new transport layer control protocols to enable quality of service features. Finally, as an application, we design a Minimum Rate Guaranteed (MRG) traffic control law that shares the same utility function as the TCP control law. Our simulation study of the MRG control law indicates that it is indeed TCP friendly and can provide minimum rate guarantee as long as the percentage of network resource consumed by the MRG flows is moderately small.