Bandwidth Issues White Papers
Analysis of Link-Level Hybrid FEC/ARQ-SR for Wireless Links and Long-Lived TCP Traffic
Overview Since the TCP protocol uses the loss of packets as an indication of network congestion, its performance degrades over wireless links, which are characterized by a high bit error rate. Different solutions have been proposed to improve the performance of TCP over wireless links, the most promising one being the use of a hybrid model at the link level combining FEC (Forward Error Correction), ARQ-SR (Automatic Repeat Request with Selective Repeat), and an in-order delivery of packets to IP. The drawback of FEC is that it consumes some extra bandwidth to transmit the redundant information. ARQ-SR consumes extra bandwidth only when packets are lost, its drawback is that it increases the Round-Trip Time (RTT), which may deteriorate the performance of TCP.
| Publisher | French National Institute for Research in Computer Science and Control | File Format | |
|---|---|---|---|
| Date Published | March 2004 | ||
| Format | White Papers | ||
| Topics | |||
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