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An Adaptive Time Synchronization Method for Temperature Compensation with Low Communication Load

A technology for communication load and temperature compensation, applied in the field of communication, can solve problems such as difficulty in application, achieve the effects of low communication load, improve node synchronization accuracy, and improve environmental adaptability

Active Publication Date: 2021-06-01
南京华曼吉特信息技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of EACS is that this method compensates time synchronization based on the look-up table method. When WSNs are large-scale, the application environment is unknown in advance, or the environment state changes frequently, this method will be difficult to apply.

Method used

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  • An Adaptive Time Synchronization Method for Temperature Compensation with Low Communication Load
  • An Adaptive Time Synchronization Method for Temperature Compensation with Low Communication Load
  • An Adaptive Time Synchronization Method for Temperature Compensation with Low Communication Load

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Embodiment Construction

[0043] It is easy to understand that, according to the technical solution of the present invention, those skilled in the art can imagine various implementations of the present invention without changing the essence and spirit of the present invention. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the entirety of the present invention or as a limitation or limitation on the technical solution of the present invention.

[0044] In the WSNs time synchronization method, not only the time synchronization accuracy between nodes must be considered, but also the node synchronization communication load and environmental adaptability must be considered. As WSNs are widely used in all aspects of people's production and life, the application environment of WSNs is gradually changing from a peaceful indoor environment to a complex and changeable outdoor environment....

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Abstract

The present invention proposes an adaptive time synchronization method for temperature compensation with low communication load. The dynamic estimation of the clock frequency shift of the node to be synchronized based on the temperature compensation of the two-way communication of the node uses the Almon function weighted sum to fuse the temperature data and the frequency shift data, and uses the Kalman filter method to update the clock of the node to be synchronized in real time; The synchronization node estimates the resynchronization period in real time according to the estimated value of the frequency shift and the historical data of the ambient temperature, and adjusts the resynchronization period adaptively. The invention maximizes the node resynchronization period and reduces channel load.

Description

technical field [0001] The invention belongs to the technical field of communication, in particular to an adaptive time synchronization method for temperature compensation with low communication load. Background technique [0002] In applications related to Wireless Sensor Networks (WSNs), nodes are required to have the ability to cooperate to complete specific tasks. For example, in a distributed network data collection system, when an end node uploads the collected data to the data center, the data is transmitted in the form of multiple hops in the network. If the data packet lacks a global time tag, the data center will Difficulty differentiating and aligning data. WSNs have the characteristics of limited energy, bandwidth, memory and computing power, and the time synchronization protocols of existing computer networks are difficult to apply to WSNs. Therefore, it is of great significance to design a time synchronization algorithm suitable for WSNs. [0003] A typical ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00H04W84/18H04J3/06
Inventor 董戈许建中孙宇嘉孙海滨
Owner 南京华曼吉特信息技术研究院有限公司