Congestion avoidance and control
SIGCOMM '88 Symposium proceedings on Communications architectures and protocols
Simulation-based comparisons of Tahoe, Reno and SACK TCP
ACM SIGCOMM Computer Communication Review
A comparison of mechanisms for improving TCP performance over wireless links
Conference proceedings on Applications, technologies, architectures, and protocols for computer communications
The Eifel algorithm: making TCP robust against spurious retransmissions
ACM SIGCOMM Computer Communication Review
An Empirical Model of HTTP Network Traffic
INFOCOM '97 Proceedings of the INFOCOM '97. Sixteenth Annual Joint Conference of the IEEE Computer and Communications Societies. Driving the Information Revolution
Audio Streaming over Bluetooth: An Adaptive ARQ Timeout Approach
ICDCSW '04 Proceedings of the 24th International Conference on Distributed Computing Systems Workshops - W7: EC (ICDCSW'04) - Volume 7
Parallel and distributed systems: simulation analysis of RLC timers in UMTS systems
Proceedings of the 34th conference on Winter simulation: exploring new frontiers
A multi-service link layer architecture for the wireless Internet: Research Articles
International Journal of Communication Systems - Special Issue: QoS Support and Service Differentiation in Wireless Networks
Adaptive Timeout Policies for Wireless Links
AINA '06 Proceedings of the 20th International Conference on Advanced Information Networking and Applications - Volume 01
Shielding TCP from last hop wireless losses: Research Articles
Wireless Communications & Mobile Computing
Adaptive link layer protocols for shared wireless links
Proceedings of the 3rd international conference on Mobile multimedia communications
Limitations of fixed timers for wireless links
ISPA'06 Proceedings of the 4th international conference on Parallel and Distributed Processing and Applications
Wide-area Internet traffic patterns and characteristics
IEEE Network: The Magazine of Global Internetworking
Optimizing TCP and RLC interaction in the UMTS radio access network
IEEE Network: The Magazine of Global Internetworking
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While traditional link layer protocols assume that they fully control the underlying link, in contemporary wireless networks the link may be dynamically shared by sessions belonging to different users and/or applications. To assess the impact of link sharing, we measure the File Transfer and Web Browsing throughput achieved over a Selective Repeat (SR) protocol, with or without contention from Media Distribution. Our results indicate that the optimal protocol settings strongly depend on the level of contention for the link. We therefore present two link layer protocols that adapt to the available bandwidth, our Adaptive Selective Repeat (ASR) protocol which dynamically modifies its retransmission timeouts, and the Radio Link Control (RLC) protocol specified for use by Universal Mobile Telecommunications System networks which does not employ retransmission timers. We first repeat our performance measurements to determine the optimal settings for each protocol, and then compare the fine tuned versions of all protocols with respect to their File Transfer and Web Browsing throughput, as well as to the delay induced to the contending Media Distribution packets. Our results indicate that while both RLC and ASR are more stable than SR, the complex RLC does not match the performance of our simpler ASR.