| Presentation | 2001/5/22 A Study on Problem Evaluation of AIS Protocol with Standpoint of Safety of Navigation and Its Avoidance Using Spacial Methods Masato TERADA, Hiroyuki SZUKI, Ryuji KOHNO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years, maritime intelligent transport systems, that is ITS in an ocean, have been researched and developed. Application of radio communications and standardization for the vessels has been proceeded rapidly. in these maritime ITS, in particular: AIS broadcasts navigational data, among ships, thereby can bc used for safety of navigation. This system broadcast messages using self-organised TDMA so that each ship can managed slot reservation of packets autonomously. This paper investigates problems in such slot reservation procedures with traffic models of ship's location and mobility. Consequently, from the viewpoint of safe navigation, we note that there are worst cases of slot collision which has been neglected in a usual protocol of AIS. In order to avoid such worst cases, we propose modification of the protocol using the transmission power control and the signal selection based on sector antennas which can be added as option of standard AIS protocol. The performance improvement is evaluated by computer simulation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Maritime ITS / AIS / TDMA / Transmission Power Control / Sector Antenna |
| Paper # | ITS2001-5 |
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| Conference Information | |
| Committee | ITS |
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| Conference Date | 2001/5/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Intelligent Transport Systems Technology (ITS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Problem Evaluation of AIS Protocol with Standpoint of Safety of Navigation and Its Avoidance Using Spacial Methods |
| Sub Title (in English) | |
| Keyword(1) | Maritime ITS |
| Keyword(2) | AIS |
| Keyword(3) | TDMA |
| Keyword(4) | Transmission Power Control |
| Keyword(5) | Sector Antenna |
| 1st Author's Name | Masato TERADA |
| 1st Author's Affiliation | Kaiyo Denshi Kogyo Co.,Ltd.() |
| 2nd Author's Name | Hiroyuki SZUKI |
| 2nd Author's Affiliation | Kaiyo Denshi Kogyo Co.,Ltd. |
| 3rd Author's Name | Ryuji KOHNO |
| 3rd Author's Affiliation | Yokohama National University Graduate School of Engineering Division of Physics, Electrical and Computer Engineering |
| Date | 2001/5/22 |
| Paper # | ITS2001-5 |
| Volume (vol) | vol.101 |
| Number (no) | 99 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |