| Presentation | 2010-03-04 An Adaptive Carrier Sensing for Addressing Deafness and Hidden Terminal Problems in Directional MAC Protocol Yuichi MIYAJI, Hideyuki UEHARA, Takashi OHIRA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The use of smart antennas for the efficient utilization of wireless resources has attracted much attention in ad hoc networks. A smart antenna can control the beam pattern electronically to improve the space utilization and extend the communication range. However, a node makes a false judgment in a physical carrier sense because the radiated power of smart antennas is ununiform spatially. The deafness and the hidden terminal problem which are the issues of directional MAC protocol occur because of the false judgment in the physical carrier sense. In this paper, we propose adaptive control methods of the carrier sense threshold to solve the false judgment in the directional MAC protocol. This methods decrease the carrier sense threshold depending on a retransmission caused by each problem. Evaluating the performance of proposals by the computer simulation we show that the proposed methods avoid the false judgment and improve the total throughput. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Smart Antennas / Medium Access Control / Physical Carrier Sense / Deafness Problem / Directional Hidden Terminal Problem |
| Paper # | NS2009-175 |
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| Conference Information | |
| Committee | NS |
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| Conference Date | 2010/2/25(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Network Systems(NS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Adaptive Carrier Sensing for Addressing Deafness and Hidden Terminal Problems in Directional MAC Protocol |
| Sub Title (in English) | |
| Keyword(1) | Smart Antennas |
| Keyword(2) | Medium Access Control |
| Keyword(3) | Physical Carrier Sense |
| Keyword(4) | Deafness Problem |
| Keyword(5) | Directional Hidden Terminal Problem |
| 1st Author's Name | Yuichi MIYAJI |
| 1st Author's Affiliation | Graduate School of Electronic and Information Engineering, Toyohashi University of Technology() |
| 2nd Author's Name | Hideyuki UEHARA |
| 2nd Author's Affiliation | Research Center for Future Vehicle, Toyohashi University of Technology |
| 3rd Author's Name | Takashi OHIRA |
| 3rd Author's Affiliation | Dept. of Information and Computer Sciences, Toyohashi University of Technology |
| Date | 2010-03-04 |
| Paper # | NS2009-175 |
| Volume (vol) | vol.109 |
| Number (no) | 448 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |