μs-scale time synchronization for energy-constrained mission-critical DTSNs

Seng Yong Lau*, Ling Jyh Chen, Yu Te Huang, Po Yen Lin, Yi Hsuan Chiang, Jyh How Huang, Kun Chan Lan, Hao Hua Chu, Polly Huang

*此作品的通信作者

研究成果: 書貢獻/報告類型會議論文篇章

摘要

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.

原文英語
主出版物標題9th International Conference on Networked Sensing Systems, INSS 2012 - Conference Proceedings
出版狀態已發佈 - 2012 八月 20
事件9th International Conference on Networked Sensing Systems, INSS 2012 - Antwerp, 比利时
持續時間: 2012 六月 112012 六月 14

出版系列

名字9th International Conference on Networked Sensing Systems, INSS 2012 - Conference Proceedings

其他

其他9th International Conference on Networked Sensing Systems, INSS 2012
國家/地區比利时
城市Antwerp
期間2012/06/112012/06/14

ASJC Scopus subject areas

  • 電腦網路與通信

指紋

深入研究「μs-scale time synchronization for energy-constrained mission-critical DTSNs」主題。共同形成了獨特的指紋。

引用此