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Wireless sensor network data compression method based on extensible markup language

An extended markup language and wireless sensor technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of large redundancy of data format, achieve good compression efficiency, and improve the effect of life

Active Publication Date: 2013-06-12
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, due to the self-description of XML itself, the redundancy of its data format is very large, which is a big problem for sensor nodes with limited energy.

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  • Wireless sensor network data compression method based on extensible markup language
  • Wireless sensor network data compression method based on extensible markup language
  • Wireless sensor network data compression method based on extensible markup language

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Embodiment Construction

[0029] figure 1 is a simple example of a heterogeneous wireless sensor network. The wireless sensor network in this example includes two subnetworks: subnetwork I composed of sensor nodes 1 and subnetwork II composed of sensor nodes 2, which provide different types of data Format, XML is used as a data exchange format between networks in wireless sensor networks. figure 2This is an example of sensor data XML documents collected in this network, and the interconnection of heterogeneous networks can be realized through data sharing and exchange between sub-networks. The XML data compression method proposed by the invention can effectively reduce the data redundancy caused by using XML as a data exchange format in the wireless sensor network, thereby reducing the energy loss of the wireless sensor network caused by data transmission and processing.

[0030] Generally, an XML document can be regarded as a tree structure, which is called a node tree. image 3 yes figure 2 The ...

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Abstract

The invention discloses a wireless sensor network data compression method based on extensible markup language. Traditional wireless sensor network data management adopts simple data structures as data exchange formats to reduce the energy loss caused by data exchange in the wireless sensor network, but the simple data structures can effectively process large heterogeneous network data collection; the current internet data transmission standard XML (extensive makeup language) is suitable for processing large heterogeneous network data, but due to the self-descriptiveness of the XML, the redundancy of the data formats is high, which is to be solved for a sensor node with finite energy. The invention provides the wireless sensor network data compression method based on the XML node tree structure, namely a TXC compression method. The method is suitable for wireless sensor networks and can support the dynamic query effectively, can obtain better compression efficiency, and is helpful to prolong the service life of the wireless sensor network in supporting the heterogeneous network interconnection.

Description

technical field [0001] The present invention relates to a data compression method for a wireless sensor network, in particular to a data compression method when extensible markup language (Extensible Markup Language, XML) format data is used as data exchange in a wireless sensor network. technical background [0002] Wireless Sensor Networks (WSNs) is a wireless network composed of a group of autonomous sensor node devices distributed in space, which use sensors to cooperatively monitor physical or environmental conditions in different locations (such as pressure, motion, temperature or sound, etc.). Due to the advancement of microprocessor technology, wireless sensor networks are increasingly used in various fields, but due to the limited hardware resources of sensor nodes, this brings new challenges to complex data management in wireless sensor networks. Traditional sensor network data management mainly uses simple data structures as data transmission formats to reduce en...

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Application Information

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IPC IPC(8): G06F17/30H03M7/30H04L1/00
CPCY02D10/00
Inventor 管有庆唐雪娇
Owner NANJING UNIV OF POSTS & TELECOMM
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