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A Compression Method of Mobile Node Monitoring Data Sequence Based on Sparse Processing

A technology for moving nodes and monitoring data, which is applied in the field of data processing, can solve the problems of not considering the data content and low efficiency of query, and achieve the effects of reducing storage and maintenance consumption, eliminating time-related redundancy, and low complexity

Active Publication Date: 2021-01-12
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, both Huffman coding and dictionary coding are general-purpose compression methods, which do not consider the data content and require additional memory overhead. When the constructed dictionary and Huffman tree are too large, the query efficiency is low

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  • A Compression Method of Mobile Node Monitoring Data Sequence Based on Sparse Processing
  • A Compression Method of Mobile Node Monitoring Data Sequence Based on Sparse Processing
  • A Compression Method of Mobile Node Monitoring Data Sequence Based on Sparse Processing

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Embodiment Construction

[0027] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0028] The overall compression process of this method is as follows figure 1 shown. In one upload cycle, the mobile node collects data multiple times at the same interval, and each data collection involves multiple environment variables. In an upload cycle, the data sequence collected by the mobile node can be expressed as: D={D 1 ,D 2 ,D 3 ,...,D m}, where m represents the number of acquisitions in this upload cycle, D i Indicates a single-shot acquisition sequence, D i ={v 1 ,v 2 ,...,v n}. v j Indicates the value of the jth variable, and n indicates the number of variables collected, which are generally specified in the data frame format.

[0029] In the sequence sparse processing part, first record the number of acquisitions m and the number of variables n in this upload cycle. And through the data field format in the dat...

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Abstract

The invention discloses a mobile node monitoring data sequence compression method based on sparse processing. The method comprises two processes of sequence sparse processing and sparse sequence encoding. According to the temporal correlation between mobile node monitoring data and the fact that the partial temporal correlation of the sequence is stronger than the overall temporal correlation, sequence correlation rearrangement and differential operation are introduced to eliminate the temporal redundancy between the adjacent monitoring data, the sparse processing is performed on the data through prefix offset encoding and adjacent bit XOR operation, and the redundancy in the sequence is further removed by the sparse encoding. By adoption of the method, the wireless communication data size can be effectively reduced, the energy consumption of the mobile node can be reduced, and the life cycle of the mobile node can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of data processing, in particular to a method for compressing mobile node monitoring data sequences based on sparse processing. Background technique [0002] With the globalization of information process and the development of wireless communication technology, the communication network has developed from person-to-person to thing-to-thing communication. The Internet of Things technology has attracted more and more attention. Various industries have also put forward higher requirements for informatization. The understanding of informatization has also changed from the original pure digitalization to the combination of digitalization, networking and wireless. With the deepening of modernization construction, data transmission through the wireless remote transmission system can improve efficiency and reduce costs, and the method of multiple collection and one transmission is conducive to the server's data anal...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/70H04N19/172
CPCH04N19/172H04N19/70
Inventor 严军范欢欢
Owner SHANGHAI UNIV