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A Transmission Quality Scalable Data Collection Method in Delay Tolerant Mobile Sensor Networks

A mobile sensor, delay-tolerant technology, applied in the direction of network topology, network planning, electrical components, etc., can solve the problem of not being able to effectively control the number of redundant copies, not taking into account the importance of different data, etc., to reduce network overhead and improve data. Transmission success rate, the effect of avoiding redundant copies

Active Publication Date: 2018-03-13
XIANGTAN UNIV
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AI Technical Summary

Problems solved by technology

In the existing algorithms, most of the forwarding strategies are determined according to the previous state of the node. The number of redundant copies cannot be effectively controlled in multi-copy forwarding, and most of the algorithms treat all data indiscriminately, without considering the different importance of different data

Method used

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  • A Transmission Quality Scalable Data Collection Method in Delay Tolerant Mobile Sensor Networks
  • A Transmission Quality Scalable Data Collection Method in Delay Tolerant Mobile Sensor Networks
  • A Transmission Quality Scalable Data Collection Method in Delay Tolerant Mobile Sensor Networks

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Embodiment Construction

[0019] The invention relates to a data collection method with scalable transmission quality in a delay-tolerant mobile sensor network. Such as figure 1 Shown, the concrete steps of technical scheme of the present invention are:

[0020] Step 1. Arrange sensor nodes, divide network areas, and number nodes and network areas:

[0021] Will After the mobile nodes are numbered, they are randomly arranged on the edge length of In the square area of ​​, the square area is equally divided into Row total equal small square areas, according to the number of rows and columns The center coordinates of a small square area are set to ,Such as figure 2 As shown, the coordinates of the center of the area in row 1 and column 1 are , No. Row The center coordinates of the column area are .

[0022] Step 2. Calculate the transition probability matrix of each node according to the historical trajectory of nodes in the delay-tolerant mobile sensor network :

[0023] 1) M...

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Abstract

The invention discloses a transmission quality scalable data collecting method in delay tolerant mobile sensor network which substantially solves the problems that the method of the prior art determines a forwarding strategy only based on a previous status of a node and indistinguishably processes all data; and the transmission quality scalable data collecting method in delay tolerant mobile sensor network belongs to the field of wireless sensor network. The transmission quality scalable data collecting method in delay tolerant mobile sensor network comprises the following steps: firstly, arranging sensor nodes, partitioning network areas, and numbering the nodes and the network areas; secondly, taking advantage of the Markov property of the movement process of the nodes, predicting the locations of the nodes, and updating the forwarding probability of the nodes in real time; additionally, collecting and forwarding data in combination with the importance of the data, until the data is received by the sink node. The transmission quality scalable data collecting method in delay tolerant mobile sensor network is able to dynamically change the transmission quality of data based on the motion trail of the nodes and the importance of data to be transmitted, thus ensuring the timeliness and reliability of important data transmission, and reducing the network overhead.

Description

technical field [0001] The invention relates to a data collection method with scalable transmission quality, which is suitable for collecting data of different importance in a delay-tolerant mobile sensor network, and belongs to the field of wireless sensor networks. Background technique [0002] Wireless sensor network (WSN, Wireless Sensor Network) is a multi-hop self-organizing network formed by a large number of cheap micro sensor nodes deployed in the monitoring area through wireless communication. In recent years, wireless sensor network has developed rapidly and has been widely used in Environmental monitoring, medical care, military field, target tracking and other fields. Data collection is an important function of wireless sensor networks. The deployed sensor nodes collect the required data and transmit the data to the sink node for processing and analysis by users. The timeliness and reliability of data transmission become important indicators of transmission qual...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/18H04W84/18
CPCH04W16/18H04W84/18
Inventor 罗光明常宝明朱江李哲涛朱更明
Owner XIANGTAN UNIV
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