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Method for locally acquiring overall information of wireless sensor network based on compressed sensing

A wireless sensor, compressed sensing technology, used in wireless communication, network topology, electrical components, etc.

Inactive Publication Date: 2011-08-24
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods will bring high computational complexity and huge communication overhead to the system

Method used

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  • Method for locally acquiring overall information of wireless sensor network based on compressed sensing
  • Method for locally acquiring overall information of wireless sensor network based on compressed sensing
  • Method for locally acquiring overall information of wireless sensor network based on compressed sensing

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Embodiment Construction

[0036] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] This embodiment conducts experiments on the premise of the technical solution of the present invention, and provides detailed implementation methods and specific operation processes, mainly including network structure setting, algorithm execution process and performance analysis.

[0038] establish one network with a total of Each node is assigned an ID for identification. Each node stores its own list of neighbor nodes, among which there are at least Neighbor nodes, and have certain storage and computing power for storing and updating received data packets. ID is The sensory data of the node is , the sensing data set of all nodes in the network is regarded as a vector . The purpose is to get a sufficiently accurate approximation when the user visits any node in the network.

[0039] The method for ...

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Abstract

The invention relates to a method for locally acquiring overall information of a wireless sensor network based on compressed sensing. The method is characterized by comprising the following steps of: projecting original data to a random observation matrix to obtain an observation value, thereby converting the data from high dimension to low dimension, namely data compression; using a means of transmitting the observation value of node data in the network by a simple gossip transmission protocol to replace the means of directly transmitting the original data in the traditional method; and when the transmission is finished, calculating the estimated value of the overall information by each node according to the received observation value by using a data reconfiguration algorithm in the compressed sensing, thereby locally acquiring the overall information. Compared with the method for directly transmitting the original data in the network, the communication number is greatly reduced, namely, the data of each node can be transmitted to other nodes by lower transmission frequency. Thus, the network expenses are reduced, and the service life of the network is prolonged.

Description

technical field [0001] The present invention relates to a method for local acquisition of global information of a wireless sensor network based on compressed sensing, which uses the correlation of sensory data among a large number of nodes in the wireless sensor network to compress and sample it, and can compress data and transmit data at the same time and achieve local acquisition of global information, which can achieve the purpose of reducing the amount of network data transmission and prolonging the life of the network. technical background [0002] Wireless sensor networks rely on countless sensor nodes to continuously sense data. However, the data collected by these sensor nodes is huge and complex, and has great redundancy in time and space. The traditional method often uses the gossip transmission protocol algorithm to transmit the data of each sensor node to the sink node, because the correlation between the nodes is not considered, this method of directly transmi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/24H04W84/18
Inventor 邹君妮李一风
Owner SHANGHAI UNIV
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