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Wireless sensor network self-adaptation compression method

A wireless sensor, compression method technology, applied in network topology, wireless communication, advanced technology, etc., to achieve the effect of energy optimization

Inactive Publication Date: 2014-07-30
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that this method only realizes energy optimization at the node level, and does not involve the multi-hop transmission ubiquitous in the network and the variability of actual channels.

Method used

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  • Wireless sensor network self-adaptation compression method
  • Wireless sensor network self-adaptation compression method
  • Wireless sensor network self-adaptation compression method

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with accompanying drawing.

[0026] figure 1 It is the hardware frame of the sensor node. The basic architecture uses the microprocessor as the main control unit to realize the control of the communication protocol and the processing of various applications; at the same time, the microprocessor has a certain storage function and is responsible for saving sensing data and various frame information (data frame, Message frame, control frame) and various application-related values ​​preset by the user. The functions of the remaining modules are as follows: the sensor (or actuator) is responsible for data collection; the radio frequency transceiver performs wireless data transmission; the energy supply unit provides energy for the radio frequency transceiver, microprocessor and sensor respectively; the user interface is responsible for the node The communication connection with the upper management termin...

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Abstract

The invention discloses a wireless sensor network self-adaptation compression method which can achieve energy optimization in the whole network. The method comprises the step of a compression judging process. In the compression judging process, the total energy consumption Ecomp caused when compression is executed and the total energy consumption Euncomp caused when compression is not executed are compared, if the total energy consumption Ecomp is larger than the total energy consumption Euncomp, initial data are not compressed and directly sent out, if the total energy consumption Ecomp is smaller than the total energy consumption Euncomp, the data compression process is executed, the initial data are compressed and then sent out, and if the total energy consumption Ecomp is equal to the total energy consumption Euncomp, the initial data are not compressed and directly sent out or the initial data are compressed and then sent out.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to an adaptive compression method for wireless sensor networks. Background technique [0002] Wireless Sensor Networks (WSNs) are widely used in environmental monitoring, health care, smart home, traffic monitoring, military monitoring and other fields. Typically, sensor nodes in the network are powered by batteries. High-density, large-scale deployment increases the difficulty of replacing batteries and replenishing energy for nodes. Therefore, efficient use of energy is the primary design goal of WSN. Data compression (Data Compression) technology is introduced into WSN, thanks to its ability to remove data redundancy. Under the premise of meeting the application requirements, it is the basic function of data compression to properly process the original data in the network to reduce the amount of data transmission, thereby effectively saving energy consumption a...

Claims

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Application Information

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IPC IPC(8): H04W52/02H04W84/18
CPCY02D30/70
Inventor 应蓓华马龙华田洪周
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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