Fluid-based analysis of a network of AQM routers supporting TCP flows with an application to RED
Proceedings of the conference on Applications, Technologies, Architectures, and Protocols for Computer Communication
The Eifel algorithm: making TCP robust against spurious retransmissions
ACM SIGCOMM Computer Communication Review
Improving TCP performance over mobile networks
ACM Computing Surveys (CSUR)
TCP/IP performance over 3G wireless links with rate and delay variation
Proceedings of the 8th annual international conference on Mobile computing and networking
TCP westwood: end-to-end congestion control for wired/wireless networks
Wireless Networks
Bandwidth tradeoff between TCP and link-level FEC
Computer Networks: The International Journal of Computer and Telecommunications Networking
On TCP performance in a heterogeneous network: a survey
IEEE Communications Magazine
Throughput analysis of TCP on channels with memory
IEEE Journal on Selected Areas in Communications
Modeling TCP in a multi-rate multi-user CDMA system
NETWORKING'07 Proceedings of the 6th international IFIP-TC6 conference on Ad Hoc and sensor networks, wireless networks, next generation internet
TCP with feed-forward source coding for wireless downlink networks
Allerton'09 Proceedings of the 47th annual Allerton conference on Communication, control, and computing
Characterizing radio resource allocation for 3G networks
IMC '10 Proceedings of the 10th ACM SIGCOMM conference on Internet measurement
Cellular data network infrastructure characterization and implication on mobile content placement
Proceedings of the ACM SIGMETRICS joint international conference on Measurement and modeling of computer systems
Cellular data network infrastructure characterization and implication on mobile content placement
ACM SIGMETRICS Performance Evaluation Review - Performance evaluation review
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TCP is the dominant transport protocol over both wired and wireless links. It is however, well known that TCP is not suitable for wireless networks and several solutions have been proposed to rectify this shortcoming. In this work, we explore cross-layer optimization of the rate adaptation feature of cellular networks to optimize throughput of a single long-lived TCP session. Modern cellular networks rate RF technology that allows them to dynamically vary the wireless channel rate in response to user demand and channel conditions. However, the set of data rates as well as the scheduler's rate adaptation policy are typically chosen to optimize throughput for inelastic applications. In order to optimize such a system for TCP, we propose a two state TCP-aware scheduler that switches between two chanrates as a function of the TCP sending rate. We develop a fluid model of the steady-state behavior of a TCP session in such a system and derive analytical expressions for TCP throughput that explicitly account for rate variability as well as the dependency between the scheduler and TCP. Using the model we choose RF layer parameters that, in conjunction with the TCP-aware scheduler, improve term throughput of a single TCP flow by 15.25%. We also compare our analytical results against those obtained from ns-2 simulations and confirm that our model indeed closely approximates TCP behavior in such an environment.