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A Convergence-Accelerated Distributed Time Synchronization Algorithm for Energy-Harvesting Wireless Sensor Networks
- Source :
- IEEE Access, Vol 9, Pp 57127-57140 (2021)
- Publication Year :
- 2021
- Publisher :
- IEEE, 2021.
-
Abstract
- Time synchronization is an essential problem for energy-harvesting wireless sensor networks (EH-WSNs), which is closely related to efficient resource schedules, energy harvesting, data fusion, location, etc. With the advantage of being more robust than master controlling synchronization, distributed time synchronization algorithms are usually used to EH-WSNs for cooperating sleeping nodes. This paper proposes a novel accelerated time co-synchronization algorithm based on the storage-and-prediction method to improve the convergence rate. In this algorithm, each node in the network first predicts the estimated current time state value according to previous time state values stored in the local node, and then adjusts the time state value according to the estimated time state value deviations between all its adjacent nodes. Theoretical analysis in a more general case shows that the proposed algorithm can improve the convergence rate of distributed time synchronization when selecting the appropriate parameter, and the closed-form solution of the optimal parameter is also given. Finally, the simulation of comparing the classical algorithm with the proposed algorithm based on different scenarios is completed.
- Subjects :
- General Computer Science
Computer science
02 engineering and technology
01 natural sciences
Synchronization
distributed consensus
convergence rate
wireless sensor network
Convergence (routing)
0202 electrical engineering, electronic engineering, information engineering
General Materials Science
Cluster analysis
time synchronization
Energy-harvesting
Node (networking)
010401 analytical chemistry
General Engineering
020206 networking & telecommunications
Sensor fusion
0104 chemical sciences
TK1-9971
Rate of convergence
State (computer science)
Electrical engineering. Electronics. Nuclear engineering
Algorithm
Wireless sensor network
Subjects
Details
- Language :
- English
- ISSN :
- 21693536
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- IEEE Access
- Accession number :
- edsair.doi.dedup.....d9db7c5f236fd652f9a2c369aed973f3