| Paper Abstract and Keywords |
| Presentation |
2004-07-15 13:40
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 (Osaka Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (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) |
| (in English) |
wireless TCP / road-to-vehicle communication / DSRC / shadowing / handover / Freeze-TCP / / |
| Reference Info. |
IEICE Tech. Rep., vol. 104, no. 185, RCS2004-96, pp. 49-54, July 2004. |
| Paper # |
RCS2004-96 |
| Date of Issue |
2004-07-08 (RCS, NS) |
| ISSN |
Print edition: ISSN 0913-5685 |
| Download PDF |
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| Conference Information |
| Committee |
RCS NS |
| Conference Date |
2004-07-15 - 2004-07-16 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Hiroshima International Univ. |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
RCS |
| Conference Code |
2004-07-RCS-NS |
| Language |
Japanese |
| 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) |
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| Keyword(1) |
wireless TCP |
| Keyword(2) |
road-to-vehicle communication |
| Keyword(3) |
DSRC |
| Keyword(4) |
shadowing |
| Keyword(5) |
handover |
| Keyword(6) |
Freeze-TCP |
| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Ryo Kajiwara |
| 1st Author's Affiliation |
Osaka University (Osaka Univ.) |
| 2nd Author's Name |
Masataka Imao |
| 2nd Author's Affiliation |
Osaka University (Osaka Univ.) |
| 3rd Author's Name |
Katsutoshi Tsukamoto |
| 3rd Author's Affiliation |
Osaka University (Osaka Univ.) |
| 4th Author's Name |
Shozo Komaki |
| 4th Author's Affiliation |
Osaka University (Osaka Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2004-07-15 13:40:00 |
| Presentation Time |
20 minutes |
| Registration for |
RCS |
| Paper # |
RCS2004-96, NS2004-60 |
| Volume (vol) |
vol.104 |
| Number (no) |
no.185(RCS), no.183(NS) |
| Page |
pp.49-54 |
| #Pages |
6 |
| Date of Issue |
2004-07-08 (RCS, NS) |
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