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Overview:
Reduced throughput of TCP over wireless networks is mainly due to misinterpretation of wireless losses as congestion signals and high delay variability because of fluctuating radio channel quality. High delay variability often leads to spurious TCP timeouts which result in severe throughput degradation. This paper shows the negative impact of large delay variations in a mixed wired and 802.11 network scenario with bursty errors, and propose an adaptive algorithm that adds delay to packets in order to prevent spurious timeouts. The algorithm can adjust to specific network characteristics such as propagation delays, loss rate, and number of mobile nodes, and is applied at the access point of a wireless LAN.
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| Format: | Size: | 327 KB | |
| Date: | Jul 2005 | ||
| Pages: | 5 |
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