| Publisher | Boston University | ||
|---|---|---|---|
| Format | 984.9KB PDF | Date added | 30 Dec 2003 |
| Topics | TCP - IP | ||
| Downloads | 373 | ||
TCP performance degrades when end-to-end connections extend over wireless connections - links which are characterized by high bit error rate and intermittent connectivity. Such link characteristics can significantly degrade TCP performance as the TCP sender assumes wireless losses to be congestion losses resulting in unnecessary congestion control actions. Link errors can be reduced by increasing transmission power, code redundancy (FEC) or number of retransmissions (ARQ). But increasing power costs resources; increasing code redundancy reduces available channel bandwidth and increasing persistency increases end-to-end delay. The paper proposes a TCP optimization through proper tuning of power management, FEC and ARQ in wireless environments (WLAN and WWAN).
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