| Publisher | Rensselaer Polytechnic Institute | ||
|---|---|---|---|
| Format | 100.2KB PDF | Date added | 08 Nov 2006 |
| Topics | Wireless LAN, TCP - IP, Wi-Fi (802.11) | ||
| Downloads | 94 | ||
As broadband wireless channels become common, the performance of TCP over end-to-end paths containing such links is important. TCP SACK suffers substantially when residual packet error rates increase beyond a value of about 1%-5% (especially for longer RTTs). The authors earlier proposed improvements to TCP (called LT-TCP) to make TCP loss-tolerant in heavy and bursty erasure environments. However, real world wireless systems do not just present bursty random loss patterns to the transport layer. The PHY, MAC and transport layers all respond to errors, interacting in myriad ways. The focus of this paper is on one underlying source of packet erasure (non-congestion loss), namely interference in 802.11 environments (from Bluetooth and co-channel interferers), and the resulting interaction between the MAC and transport layer mechanisms.
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