無線低功耗網路之同步對時機制研究

Clock Synchronization on Low-Power Wireless Sensor Networks

陳鈺萍(Yu-Ping Chen)

指導教授 ： 吳坤熹

共同指導教授 ： 許孟烈

國立暨南國際大學/科技學院/通訊工程研究所/碩士(2012年)

https://doi.org/10.6837/NCNU.2012.00058

摘要

本研究目的為無線低功耗網路的時間同步，利用現有的網路時間協定（Network Time Protocol）和無線低功耗網路（Low-Power WiFi）的設備，結合通用非同步收發傳輸器（Universal Asynchronous Receiver/Transmitter；UART）程式和對時程式達成時間同步的資訊交換。本研究所採用的方式，不需要昂貴的開發套件，也能完成低成本、高準確率的對時機制，並節省設備成本的支出。

關鍵字

無線低功耗網路 ； 網路時間協定 ； 無線感測網路

並列摘要

The work explores the mechanism of clock synchronization with Low-Power WiFi. We adopt Network Time Protocol (NTP) on Low-Power WiFi devices which combines a Universal Asynchronous Receiver/Transmitter (UART) program and a clock request program to exchange information for clock synchronizing. The approach proposed in this work can lead to a clock synchronizing mechanism with low cost and high accuracy.. Furthermore, this approach does not require an expensive development kit, so it can save the cost of the equipment expenditures.

並列關鍵字

Low-Power WiFi ； NTP ； Wireless Sensor Networks

參考文獻

[1] Ill-Keun Rhee, Jaehan Lee, Jangsub Kim, Erchin Serpedin and Yik-Chung Wu, “Clock Synchronization in Wireless Sensor Networks: An Overview” Sensors 2009, 9, 56-85.

[2] D.L. Mills, “Network Time Protocol (NTP),” IETF RFC 958, Sep. 1985.

[3] Hubert Zimmermann, “OSI Reference Model-The IS0 Model of Architecture for Open Systems Interconnection,” IEEE Transactions on Communications, vol. COM-28, no. 4, April 1980.

[4] Daniel M. Dobkin, Bernard Aboussouan, “LOW POWER WI-FI™ (IEEE 802.11) FOR IP SMART OBJECTS,” Gainspan Corporation White Paper, 2009.

[5] Yu-Ping CHEN, Quincy WU, “Power Consumption Measurement and Clock Synchronization on Low-Power Wireless Sensor Networks,” Advanced Communication Technology (ICACT), 2012 14th International Conference on, 19-22 Feb. 2012.