کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
444369 692970 2015 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adaptive time window linear regression algorithm for accurate time synchronization in wireless sensor networks
ترجمه فارسی عنوان
الگوریتم رگرسیون خطی پنجره سازگار برای هماهنگ سازی زمان دقیق در شبکه های حسگر بی سیم
کلمات کلیدی
شبکه های حسگر بی سیم، هماهنگ سازی زمان، رگرسیون خطی، پنجره زمان سازگار
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
چکیده انگلیسی

In this article we propose a new algorithm for time synchronization in wireless sensor networks. The algorithm is based on linear regression to achieve long-term synchronization between the clocks of different network motes. Since motes are built using low-cost hardware components, usually their internal local clocks are not very accurate. In addition, there are other effects that affect the clock precision, such as: environmental conditions, supply voltage, aging, manufacturing process. Because some of these causes are external and unpredictable, the clock drift between two motes can change in a random way. Due to these changes, the optimum time window used for performing the linear regression varies with time. The proposed time synchronization algorithm adjusts the resynchronization periods and the linear regression window size to these variations, minimizing the synchronization error. Our algorithm has been tested in real multihop network deployments and the results obtained show higher clock accuracy when compared to the related work.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ad Hoc Networks - Volume 24, Part A, January 2015, Pages 92–108
نویسندگان
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