Voltage-Aware Time Synchronization for Wireless Sensor Networks
The low-cost crystal oscillators in wireless sensor networks are prone to be affected by their working conditions such as voltage, temperature, and humidity. Such effect is often ignored by existing time synchronization solutions that typically assume the frequency error of a given node to be consta...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2014-07-01
|
| Series: | International Journal of Distributed Sensor Networks |
| Online Access: | https://doi.org/10.1155/2014/285265 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849304990533812224 |
|---|---|
| author | Meng Jin Dingyi Fang Xiaojiang Chen Zhe Yang Chen Liu Xiaoyan Yin |
| author_facet | Meng Jin Dingyi Fang Xiaojiang Chen Zhe Yang Chen Liu Xiaoyan Yin |
| author_sort | Meng Jin |
| collection | DOAJ |
| description | The low-cost crystal oscillators in wireless sensor networks are prone to be affected by their working conditions such as voltage, temperature, and humidity. Such effect is often ignored by existing time synchronization solutions that typically assume the frequency error of a given node to be constant and hence adopt frequent timestamp exchanges, resulting in high energy consumptions. We propose a novel voltage-aware time synchronization (VATS) scheme that is inspired by the fact that the clock skew is highly correlated to voltage supplies. VATS features a two-phase process: (i) it first estimates the clock skew and updates the frequency error autonomously based on the local voltage level; (ii) it then adjusts the resynchronization intervals dynamically according to a given synchronization error controlling factor and the synchronization error accumulating rate to balance the calibration accuracy and cost. Since VATS leverages voltage measurements to assist clock skew estimation, it does not require frequent timestamp exchanges as in traditional schemes. Extensive simulation results illustrate the superior performance of the proposed method in terms of calculation accuracy, robustness, and reduced timestamp exchanges for energy saving. |
| format | Article |
| id | doaj-art-3d46c561cff54776a50a3c47f492a9d9 |
| institution | Kabale University |
| issn | 1550-1477 |
| language | English |
| publishDate | 2014-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Distributed Sensor Networks |
| spelling | doaj-art-3d46c561cff54776a50a3c47f492a9d92025-08-20T03:55:33ZengWileyInternational Journal of Distributed Sensor Networks1550-14772014-07-011010.1155/2014/285265285265Voltage-Aware Time Synchronization for Wireless Sensor NetworksMeng Jin0Dingyi Fang1Xiaojiang Chen2Zhe Yang3Chen Liu4Xiaoyan Yin5 School of Information Science and Technology, Northwest University, Xi'an 710127, China School of Information Science and Technology, Northwest University, Xi'an 710127, China School of Information Science and Technology, Northwest University, Xi'an 710127, China School of Computer Science, Northwestern Polytechnical University, Xi'an 710072, China School of Information Science and Technology, Northwest University, Xi'an 710127, China School of Information Science and Technology, Northwest University, Xi'an 710127, ChinaThe low-cost crystal oscillators in wireless sensor networks are prone to be affected by their working conditions such as voltage, temperature, and humidity. Such effect is often ignored by existing time synchronization solutions that typically assume the frequency error of a given node to be constant and hence adopt frequent timestamp exchanges, resulting in high energy consumptions. We propose a novel voltage-aware time synchronization (VATS) scheme that is inspired by the fact that the clock skew is highly correlated to voltage supplies. VATS features a two-phase process: (i) it first estimates the clock skew and updates the frequency error autonomously based on the local voltage level; (ii) it then adjusts the resynchronization intervals dynamically according to a given synchronization error controlling factor and the synchronization error accumulating rate to balance the calibration accuracy and cost. Since VATS leverages voltage measurements to assist clock skew estimation, it does not require frequent timestamp exchanges as in traditional schemes. Extensive simulation results illustrate the superior performance of the proposed method in terms of calculation accuracy, robustness, and reduced timestamp exchanges for energy saving.https://doi.org/10.1155/2014/285265 |
| spellingShingle | Meng Jin Dingyi Fang Xiaojiang Chen Zhe Yang Chen Liu Xiaoyan Yin Voltage-Aware Time Synchronization for Wireless Sensor Networks International Journal of Distributed Sensor Networks |
| title | Voltage-Aware Time Synchronization for Wireless Sensor Networks |
| title_full | Voltage-Aware Time Synchronization for Wireless Sensor Networks |
| title_fullStr | Voltage-Aware Time Synchronization for Wireless Sensor Networks |
| title_full_unstemmed | Voltage-Aware Time Synchronization for Wireless Sensor Networks |
| title_short | Voltage-Aware Time Synchronization for Wireless Sensor Networks |
| title_sort | voltage aware time synchronization for wireless sensor networks |
| url | https://doi.org/10.1155/2014/285265 |
| work_keys_str_mv | AT mengjin voltageawaretimesynchronizationforwirelesssensornetworks AT dingyifang voltageawaretimesynchronizationforwirelesssensornetworks AT xiaojiangchen voltageawaretimesynchronizationforwirelesssensornetworks AT zheyang voltageawaretimesynchronizationforwirelesssensornetworks AT chenliu voltageawaretimesynchronizationforwirelesssensornetworks AT xiaoyanyin voltageawaretimesynchronizationforwirelesssensornetworks |