Time-space compression network coding based data transmission method in wireless sensor network

A wireless sensor network and network coding technology, applied in digital transmission system, transmission system, network topology, etc., can solve the problems of prolonging network survival time, high complexity, and not considering data correlation, etc., to reduce the total transmission volume , reduce the amount of data transfer and the number of transfers, and the effect of reducing the amount of data transfer

Inactive Publication Date: 2016-09-28
XIDIAN UNIV
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Problems solved by technology

The disadvantage of this method is that adding a coordinator leads to high complexity, and does not consider the energy consumption of the entire network to further prolong the survival time of the network
[0005] To sum up, the existing data transmission methods in wir

Method used

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  • Time-space compression network coding based data transmission method in wireless sensor network
  • Time-space compression network coding based data transmission method in wireless sensor network
  • Time-space compression network coding based data transmission method in wireless sensor network

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Embodiment Construction

[0026] Examples and effects of the present invention are described in detail below with reference to the accompanying drawings:

[0027] refer to figure 1 , the implementation steps of the present invention are as follows:

[0028] Step 1: Perform time-space compression sampling at the node sending end to obtain the original data packet.

[0029] (1a) Initialize the original data of node n to obtain the original data X n ∈ R N*1 , where n is the number of the node, N is the number of rows, indicating that the node samples the original data in N time slots, and 1 is the number of columns;

[0030] In one embodiment of the present invention, there are 4 nodes, and in 5 time slots, the original data obtained by sampling are respectively:

[0031] X 1 = 162 162 163 ...

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Abstract

The invention discloses a time-space compression network coding based data transmission method in a wireless sensor network, which mainly solves problems of great total amount of data transmission and large number of transmission times of a data transmission method in the existing wireless sensor network. The data transmission method comprises the implementation steps of (1) carrying out time-space compression sampling at a node transmitting terminal so as to acquire an original data packet; (2) transmitting the original data packet by using the intra-cluster space-time correlation and inter-cluster inter-flow network coding; and (3) recovering the original data packet by using a gradient projection algorithm GPSR_BB in a receiving terminal sink node. According to the data transmission method, the time-space correlation of perception data is dug in a node sampling stage, the total amount of data is reduced, the data transmission amount is compressed by adopting intra-cluster transmission and inter-cluster transmission, and the number of transmission times is reduced, so that the life time of the wireless sensor network is prolonged, and the data transmission method can be applied to acquisition, transmission and recovery of data in the wireless sensor network.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a data transmission method, which can be used for data collection, transmission and recovery in a wireless sensor network. Background technique [0002] Wireless sensor network (WSN) is a multi-hop self-organizing network with the characteristics of low power consumption, low cost, and distributed. It cooperatively perceives and processes information in the network coverage area through a large number of nodes distributed in the area to be tested. . Wireless sensor networks are generally randomly installed in areas where the environment is harsh or people cannot reach them. After installation, its maintenance and operation generally do not require human intervention. So how to improve the network survival time of WSN as much as possible is a key issue. [0003] The patent "A Data Transmission Method for Wireless Sensor Networks" (publication number: CN10202561...

Claims

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Application Information

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IPC IPC(8): H04W28/06H04W84/18H04L1/06
CPCH04W28/06H04L1/0618H04W84/18
Inventor 肖嵩覃大选权磊刘洋希薛晓芦存博杜建超
Owner XIDIAN UNIV
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