| Presentation | 2006/10/12 Throughput Optimization for TCP with an Active Proxy in Long-Delay Satellite Environments(Advanced Technology-II) Wang Hui, Shigeyuki Osada, Tokumi Yokohira, Yukinobu Fukushima, Deng Chaolong, Kiyohiko Okayama, Nariyoshi Yamai, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Although Transmission Control Protocol (TCP) is widely used in the Internet, its performance is poor in networks with long delays. To improve TCP performance in such networks as long-delay satellite environments, the use of a PEP (Performance Enhancing Proxy) has been proposed. The PEP operates on a router that connects a terrestrial link and a satellite link along a TCP connection. 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 on behalf of the destination host, and stores a copy of the packet in a local buffer (PEP buffer) in case retransmission of the packet is required. As a congestion control method on the PEP, a method that keeps the number of prematurely acknowledged packets in the PEP buffer below a threshold (watermark) value has been proposed. However, an optimization method of the watermark value has not been proposed. In this paper, we propose an adaptive watermark value optimization algorithm that maximizes the average throughput of each connection in response to dynamic establishment and release of connections, under a fairness condition that the average throughputs of connections are equal to each other. Numerical examples using the NS2 simulator for a simple network model show the effectiveness of the proposed algorithm. |
| Keyword(in Japanese) | (See Japanese page) |
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| Paper # | SAT2006-34 |
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| Committee | SAT |
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| Conference Date | 2006/10/12(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Satellite Telecommunications (SAT) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Throughput Optimization for TCP with an Active Proxy in Long-Delay Satellite Environments(Advanced Technology-II) |
| Sub Title (in English) | |
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| 1st Author's Name | Wang Hui |
| 1st Author's Affiliation | The Faculty of Electronic Information Engineering, Henan Univ. of Science and Technology() |
| 2nd Author's Name | Shigeyuki Osada |
| 2nd Author's Affiliation | The Graduate School of Natural Science and Technology, Okayama Univ. |
| 3rd Author's Name | Tokumi Yokohira |
| 3rd Author's Affiliation | The Graduate School of Natural Science and Technology, Okayama Univ. |
| 4th Author's Name | Yukinobu Fukushima |
| 4th Author's Affiliation | The Graduate School of Natural Science and Technology, Okayama Univ. |
| 5th Author's Name | Deng Chaolong |
| 5th Author's Affiliation | The Faculty of Electronic Information Engineering, Henan Univ. of Science and Technology |
| 6th Author's Name | Kiyohiko Okayama |
| 6th Author's Affiliation | The Okayama University Information Technology Center |
| 7th Author's Name | Nariyoshi Yamai |
| 7th Author's Affiliation | The Okayama University Information Technology Center |
| Date | 2006/10/12 |
| Paper # | SAT2006-34 |
| Volume (vol) | vol.106 |
| Number (no) | 303 |
| Page | pp.pp.- |
| #Pages | 6 |
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