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TCP and IEEE 802 . 11 b Protocol Performance in Indoor Wireless Channels
| Content Provider | Semantic Scholar |
|---|---|
| Author | Vasudevan, Varun Parikh, Mitesh Chandra, K. Thompson, Christopher P. |
| Copyright Year | 2003 |
| Abstract | Measurements of TCP flows in indoor wireless channels are analyzed to evaluate the response of TCP and IEEE 802.11b protocols in time-varying multipath channels. For the same position of the mobile terminal and access point, throughputs range from 2 5.5 Mbps under diverse channel conditions. Throughput limiting effects are found to result from both channel and protocol related events. Signal fade durations typically range from 1-4 seconds and the wireless channel induces multiple losses of the same TCP segment during these events. As a result, TCP backs off transmission for large time periods. During good channel conditions, a periodic loss behavior is observed at time intervals on the order of two seconds. These events are triggered by the growth of TCP congestion window to the maximum allowed by the receiver, causing an instantaneous increase in segment arrival rate at the access point. This results in overflows in the access point buffer. The lack of synchronization between the time scales involved in congestion window growth and channel access result in the pseudo-periodic TCP loss behavior on wireless channels. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://morse.uml.edu/~kchandra/publications/sarnoff-03.pdf |
| Alternate Webpage(s) | http://morse.uml.edu/research.d/traffic/presentations/sarnoff2003/sarnoff03_pres.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
