Stop-and-selective repeat ARQ scheme for a high-speed transportprotocol

摘要

Research into a transport protocol for high-speed networks is onenof the most progressive areas in the field of computer communications.nIn high-speed networks using optical fiber as a transmission medium thatngives the bandwidth from a hundred Mbits/s to Gbits/s, the roundtripn(propagation) delay and bandwidth product becomes large. It is wellnknown that for an increase in this product, the throughput performancenof the conventional error control procedures such as thengo-back-N-based-ARQ scheme does degrade significantly. Therefore, a newnprotocol based on a selective-repeat ARQ scheme must be developed. Thenauthors propose the stop-and-selective repeat (SSR) ARQ protocol andnanalyze the throughput performance of it. The throughput formula isnexactly derived in terms of the roundtrip delay, the frame error rate,nand the window size of from one to two roundtrip delays. The window sizenneeded to offer the adequate throughput greater than 95% is shown