| Presentation | 2005-11-18 Packet Arrival Interval (PAI) based Time Synchronization Akihiko MACHIZAWA, Hiroshi TORIYAMA, Tsukasa IWAMA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Many of distributed measurement and control applications are enhanced by having an accurate time; microsecond to sub-microsecond. Queueing delays in packet-switched network, which LAN uses, deteriorate accuracy of time synchronization. This article presents a new time synchronization algorithm to improve the accuracy under queueing delays. It is based on packet arrival intervals (PAI) of synchronizing packet which are broadcasted at constant rate. An average of the intervals are hardly affected by queueing delays. Clock rate and the average are identical. Network delay can be calculated, because components of LAN can be known. From experimental result, our approach achieved microsecond accuracy under existence of 80% cross traffic. This algorithm does not need machine power, so it is suitable for low-end devices such as nodes of sensor-net. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | precision time synchronization / packet arrival interval / queueing delay / LAN |
| Paper # | CQ2005-73 |
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| Conference Information | |
| Committee | CQ |
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| Conference Date | 2005/11/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Communication Quality (CQ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Packet Arrival Interval (PAI) based Time Synchronization |
| Sub Title (in English) | |
| Keyword(1) | precision time synchronization |
| Keyword(2) | packet arrival interval |
| Keyword(3) | queueing delay |
| Keyword(4) | LAN |
| 1st Author's Name | Akihiko MACHIZAWA |
| 1st Author's Affiliation | National Institute of Information and Communications Technology() |
| 2nd Author's Name | Hiroshi TORIYAMA |
| 2nd Author's Affiliation | National Institute of Information and Communications Technology |
| 3rd Author's Name | Tsukasa IWAMA |
| 3rd Author's Affiliation | National Institute of Information and Communications Technology |
| Date | 2005-11-18 |
| Paper # | CQ2005-73 |
| Volume (vol) | vol.105 |
| Number (no) | 406 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |