| Presentation | 2004/7/8 Estimation Method of Long-term Shutdown and Its Throughput Improvement Effect for Road-to-Vehicle TCP/IP Communication System Ryo KAJIWARA, Masataka IMAO, Katsutoshi TSUKAMOTO, Shozo KOMAKI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In a Road-to-Vehicle TCP/IP communication system, occurrence of shadowing caused by other vehicles and dead zone between adjacent spots lead packets loss in large quantity, and data throughput deteriorate because of repeated packet retransmission by timeout. Though the technique of Freeze-TCP has proposed to overcome this problem, it must be needed an accurate estimation of long-term shutdown with the round trip time (RTT) in the Road-to-Vehicle communication network. Hence this paper proposes the differential power comparison (DPC) method, which estimates long-term shutdown at a mobile station by comparing differential power. Computer simulations reveal that the occurrence of shadowing can be estimated with high accuracy irrespective of RTT fluctuation, and the throughput at a mobile station is improved 1.5 times as large as that of conventional method by applying the Freeze-TCP to the DPC method. This paper also illustrates that the DPC method can estimate the approach of dead zone between adjacent spots. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | wireless TCP / road-to-vehicle communication / DSRC / shadowing / handover / Freeze-TCP |
| Paper # | NS2004-60,RCS2004-96 |
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| Committee | RCS |
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| Conference Date | 2004/7/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Estimation Method of Long-term Shutdown and Its Throughput Improvement Effect for Road-to-Vehicle TCP/IP Communication System |
| Sub Title (in English) | |
| Keyword(1) | wireless TCP |
| Keyword(2) | road-to-vehicle communication |
| Keyword(3) | DSRC |
| Keyword(4) | shadowing |
| Keyword(5) | handover |
| Keyword(6) | Freeze-TCP |
| 1st Author's Name | Ryo KAJIWARA |
| 1st Author's Affiliation | Department of Communications Engineering, Graduate School of Engineering, Osaka University() |
| 2nd Author's Name | Masataka IMAO |
| 2nd Author's Affiliation | Department of Communications Engineering, Graduate School of Engineering, Osaka University |
| 3rd Author's Name | Katsutoshi TSUKAMOTO |
| 3rd Author's Affiliation | Department of Communications Engineering, Graduate School of Engineering, Osaka University |
| 4th Author's Name | Shozo KOMAKI |
| 4th Author's Affiliation | Department of Communications Engineering, Graduate School of Engineering, Osaka University |
| Date | 2004/7/8 |
| Paper # | NS2004-60,RCS2004-96 |
| Volume (vol) | vol.104 |
| Number (no) | 185 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |