| Presentation | 2008-01-24 An Effective Use of Antenna Directivities for the Future Ubiquitous Infrastructure Takashi WATANABE, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Communications protocols with directional antennas or beam-steerable antennas are promising technologies for the effective communication of ubiquitous networks with many transmitters. In this paper, we address some inherent problems of directional antenna based protocols; acquisition of locations of other nodes, directional hidden terminal problem, and deafness. Then, this paper describes some solutions for the problems in the medium access control (MAC) layer, and the routing layer. More specifically, we mention SWAMP, BRTS, HCTS, RCTS, Orthogonal routing, and UNAGI/ESPAR. SWAMP is one of MAC protocols which solve the location problem within the MAC layer. BRT, HCT, and RCT solve directional hidden terminal problems in the MAC layer, while Orthogonal routing does in the routing layer. We develop UNAGI/ESPAR testbed for ad hoc networks with smart antennas. It incorporates a practical smart antenna, ESPAR as well as GPS, and gyros. Some experiments results are also shown. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Ubiquitous Network / Ad Hoc Network / Spatial Reuse / Smart Antennas |
| Paper # | CQ2007-86,MoMuC2007-65,USN2007-59 |
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| Conference Information | |
| Committee | USN |
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| Conference Date | 2008/1/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Ubiquitous and Sensor Networks(USN) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Effective Use of Antenna Directivities for the Future Ubiquitous Infrastructure |
| Sub Title (in English) | |
| Keyword(1) | Ubiquitous Network |
| Keyword(2) | Ad Hoc Network |
| Keyword(3) | Spatial Reuse |
| Keyword(4) | Smart Antennas |
| 1st Author's Name | Takashi WATANABE |
| 1st Author's Affiliation | Graduate school of science and technology, Shizuoka University() |
| Date | 2008-01-24 |
| Paper # | CQ2007-86,MoMuC2007-65,USN2007-59 |
| Volume (vol) | vol.107 |
| Number (no) | 447 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |