Self-Correcting Time Synchronization Based on Cross Layer for Wireless Sensor Network

被引：0
|
作者：
Liang, Fengmei [1 ]
Liu, Bin [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Informat Engneering, Taiyuan 030024, Peoples R China
来源：
ADVANCES IN MANUFACTURING TECHNOLOGY, PTS 1-4 | 2012年 / 220-223卷
关键词：
Time Synchronization; Self-Correcting; Cross Layer; Wireless Sensor Network;
D O I：
10.4028/www.scientific.net/AMM.220-223.1871
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Due to energy restrictions, node distribution density and hardware computing power etc., the traditional time synchronization mechanism is not suitable for wireless sensor network. The paper discussed the main reason that caused asynchronization and proposed an improved time synchronization algorithm based on cross layer optimization for wireless sensor network. Considering the stability of crystal oscillation and the linearity of crystal deviation in the physical layer, the improved time synchronization mechanism implemented a self-correction by the cross-layer MAC protocol. Estimating the crystal oscillation drift, the crystal deviation had been self-corrected just by a few times data broadcast. The experiment on the MCU Si1000 physical layer platform has demonstrated the practicability of the algorithm. The synchronization algorithm is able to keep a stable network operation in the way of extending the synchronization period and reducing the synchronization cost. The synchronization mechanism is applicable to the active acquisition network, especially the realtime one.
引用
收藏
页码：1871 / 1876
页数：6
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