| Paper Abstract and Keywords |
| Presentation |
2005-11-18 13:30
Packets Arrival Interval based Time Synchronization
Akihiko Machizawa, Hiroshi Toriyama, Tsukasa Iwama (NICT) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (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) |
| (in English) |
precision time synchronization / packet arrival interval / queueing delay / LAN / distributed processing / / / |
| Reference Info. |
IEICE Tech. Rep., vol. 105, no. 406, CQ2005-73, pp. 35-40, Nov. 2005. |
| Paper # |
CQ2005-73 |
| Date of Issue |
2005-11-10 (CQ) |
| ISSN |
Print edition: ISSN 0913-5685 |
| Download PDF |
|
| Conference Information |
| Committee |
ICM NS CQ |
| Conference Date |
2005-11-17 - 2005-11-18 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Kunibiki-messe (Matsue city) |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
NW performance management, NW quality, etc. |
| Paper Information |
| Registration To |
CQ |
| Conference Code |
2005-11-TM-NS-CQ |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Packets Arrival Interval based Time Synchronization |
| Sub Title (in English) |
|
| Keyword(1) |
precision time synchronization |
| Keyword(2) |
packet arrival interval |
| Keyword(3) |
queueing delay |
| Keyword(4) |
LAN |
| Keyword(5) |
distributed processing |
| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Akihiko Machizawa |
| 1st Author's Affiliation |
National Institute of Information and Communications Technology (NICT) |
| 2nd Author's Name |
Hiroshi Toriyama |
| 2nd Author's Affiliation |
National Institute of Information and Communications Technology (NICT) |
| 3rd Author's Name |
Tsukasa Iwama |
| 3rd Author's Affiliation |
National Institute of Information and Communications Technology (NICT) |
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| Speaker |
Author-1 |
| Date Time |
2005-11-18 13:30:00 |
| Presentation Time |
25 minutes |
| Registration for |
CQ |
| Paper # |
CQ2005-73 |
| Volume (vol) |
vol.105 |
| Number (no) |
no.406 |
| Page |
pp.35-40 |
| #Pages |
6 |
| Date of Issue |
2005-11-10 (CQ) |