| Presentation | 2005-03-04 Performance Improvement of TCP using a Performance Enhancing Proxy : Effect of Premature ACK Transmission Timing on Throughput Yoshiki IZUMI, Shigeyuki OSADA, Tokumi YOKOHIRA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In order to improve TCP performance, a method using a PEP (Performance Enhancing Proxy) is proposed. In the method, when a data packet arrives at the PEP, it forwards the packet to the destination host, transmits the corresponding ACK (premature ACK) to the source host and stores the copy of the packet into its own buffer (PEP buffer) for retransmitting the packet. In this paper, we investigate the effect of premature ACK transmission timing on throughput using simulation, where a premature ACK is transmitted only when the number of packets in the PEP buffer is smaller than a fixed threshold value (watermark value). The simulation results show that while throughput is larger for larger value of the watermark value, it decreases when the value exceeds a value in the case that the output side network of the PEP has a larger propagation delay than the input side network, and in the opposite case, while throughput improvement is smaller for the increase of the watermark value, throughput does not decrease. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | TCP / PEP / Premature ACK / watermark |
| Paper # | NS2004-264,IN2004-264 |
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| Committee | NS |
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| Conference Date | 2005/2/25(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Network Systems(NS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance Improvement of TCP using a Performance Enhancing Proxy : Effect of Premature ACK Transmission Timing on Throughput |
| Sub Title (in English) | |
| Keyword(1) | TCP |
| Keyword(2) | PEP |
| Keyword(3) | Premature ACK |
| Keyword(4) | watermark |
| 1st Author's Name | Yoshiki IZUMI |
| 1st Author's Affiliation | Graduate School of Natural Science and Technology, Okayama Univ.() |
| 2nd Author's Name | Shigeyuki OSADA |
| 2nd Author's Affiliation | Faculty of Engineering, Okayama Univ. |
| 3rd Author's Name | Tokumi YOKOHIRA |
| 3rd Author's Affiliation | Faculty of Engineering, Okayama Univ. |
| Date | 2005-03-04 |
| Paper # | NS2004-264,IN2004-264 |
| Volume (vol) | vol.104 |
| Number (no) | 690 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |