Name
Abstract | ||
|---|---|---|
It is generally considered a trivial task to synchronize time in a distributed sensor network having a GPS module on board for each sensor node. This is not quite true depending on the application at hand. Commissioned to implement YuShanNet, a delay-tolerant sensor network (DTSN) enabling encounter information collection for hiker search and rescue, we find that the naive use of standard GPSs time acquisition functionalities gives a synchronization error at the scale of 10-100s milliseconds, which is not sufficient given two application-specific considerations: (1) data goodput and (2) energy efficiency. The two requirements are crucial in that the matter is life or death and the hiking trips usually take days. Towards efficient use of the intermittent connectivity in YuShanNet, we design, implement, and evaluate a time synchronization mechanism that improves the synchronization accuracy by approximately two orders of magnitude. This enables TDMA-fashioned MAC for high-goodput data transmission while the GPS is duty-cycled for energy efficiency. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/INSS.2012.6240561 | INSS |
Keywords | Field | DocType |
global positioning system,delay tolerant networks,time division multiple access,wireless sensor networks,gps module on board,tdma-fashioned mac,yushannet implementation,delay-tolerant sensor network,distributed sensor network,energy efficiency,fine-grained time synchronization mechanism,high-goodput data transmission,hiker search,information collection,intermittent connectivity,mission-critical dtsn,synchronization error,time 10 ms to 100 ms,time acquisition functionality,collaboration,synchronization,calibration,hardware | Sensor node,Synchronization,Computer science,Data synchronization,Real-time computing,GPSS,Global Positioning System,Goodput,Assisted GPS,Wireless sensor network | Conference |
ISBN | Citations | PageRank |
978-1-4673-1785-6 | 0 | 0.34 |
References | Authors | |
1 | 9 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Seng-Yong Lau | 1 | 129 | 11.28 |
| Ling-Jyh Chen | 2 | 759 | 78.81 |
| Yu-Te Huang | 3 | 19 | 3.21 |
| Po-Yen Lin | 4 | 15 | 2.58 |
| yihsuan chiang | 5 | 0 | 0.68 |
| Jyh-how Huang | 6 | 133 | 13.89 |
| Kun-Chan Lan | 7 | 609 | 51.90 |
| Hao-Hua Chu | 8 | 1168 | 98.54 |
| Polly Huang | 9 | 886 | 82.35 |