On estimating end-to-end network path properties
Proceedings of the conference on Applications, technologies, architectures, and protocols for computer communication
The Eifel retransmission timer
ACM SIGCOMM Computer Communication Review
The Eifel algorithm: making TCP robust against spurious retransmissions
ACM SIGCOMM Computer Communication Review
Optimizing the end-to-end performance of reliable flows over wireless links
Wireless Networks - Selected Papers from Mobicom'99
On estimating end-to-end network path properties
ACM SIGCOMM Computer Communication Review - Workshop on data communication in Latin America and the Caribbean
Optimal Design of Hybrid FEC/ARQ Schemes for TCP over Wireless Links with Rayleigh Fading
IEEE Transactions on Mobile Computing
Study and performance analysis of transport layer mechanisms applied in military radio environment
Computers and Electrical Engineering
Effect of TCP/LLC protocol interaction in GPRS networks
Computer Communications
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We study the performance problems that exist when loss responsive flows traverse wireless links, where losses are often unrelated to congestion. We present a novel concept - flow-adaptive wireless links - which provides service differentiation by tailoring link layer error control to the QoS requirements of each flow sharing the link. Flow-adaptive links emphasize local error control as a necessary complement to end-to-end error control, and are independent of transport (or higher) layer protocol semantics. The key idea is that applications use the IP layer as a level of indirection through which QoS requirements are communicated to each link along the path, on a per flow basis. We then demonstrate how this improves performance for the particular class of reliable loss responsive flows. We prove in general that a well engineered, fully reliable wireless link does not interfere with TCP''s end-to-end error recovery. Moreover, we propose a new error recovery algorithm (TCP-Eifel) that can optionally be implemented in TCP to further improve performance. By eliminating the retransmission ambiguity problem the algorithm detects spurious timeouts, and uses these as an implicit cross-layer signal to prevent unnecessary retransmissions in TCP.