Node redundancy detection method for heterogeneous sensor network

A node and redundant technology, applied in the field of heterogeneous wireless sensor network node scheduling, can solve the problems of complex deployment area environment and limited battery capacity, so as to increase the scope of research, improve the network life cycle, reduce blindness and time complexity degree of effect

Inactive Publication Date: 2013-09-18
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] Due to various factors such as cost and volume, the battery capacity of a single sensor node is often limited
In addition, due to the large number of sensor nodes, the wide distribution range, and the complex environment of the deployment area, some areas are even inaccessible to personnel, so it is not feasible to replace the node battery and supplement the energy of the node

Method used

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  • Node redundancy detection method for heterogeneous sensor network
  • Node redundancy detection method for heterogeneous sensor network
  • Node redundancy detection method for heterogeneous sensor network

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Embodiment Construction

[0041] The present invention is based on the redundant judgment method of the heterogeneous network, and adopts a neighbor node classification judgment strategy to know whether the node can enter the dormant state.

[0042] 1. Sensor coverage problem:

[0043] 1. Same sensing range:

[0044] Definition 1: Neighbor. node The neighbor set of can be defined as ,in is the set of nodes in the deployment zone, represents a node to node the distance between. for node The perception range of the node , the mathematical condition for it to be a redundant node is , the perception range nodes of all its neighbor nodes A superset of the perceptual range, whose expression is .

[0045] Definition 2: shared sectors. Such as figure 1 ,node with node As neighbors, the sensing areas of the two intersect at with Two points, the sector formed by the edge side and the arc Composed of, the fan-shaped area can be defined as a node to node sector, ...

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Abstract

The invention relates to a node redundancy detection method for a heterogeneous sensor network, wherein judgment is performed with different redundancy rules by adopting an algorithm that nodes are classified according to positions of neighbor nodes. Aiming at a scheduling method for covering nodes in a traditional isomorphic network, the method provided by the invention comprises the following steps: classifying the neighbor nodes into three types according to node positions in a sensor network with two sensing distances; and judging with different redundancy rules so as to judge whether the nodes can sleep. Meanwhile, the traditional redundancy judgment flow is also changed so as to achieve the purpose of preventing blind points from being covered. The problem of redundancy caused by high-density deployment of nodes is solved, and the life cycle of the network is prolonged.

Description

technical field [0001] The invention relates to a novel method for judging node redundancy in a heterogeneous wireless sensor network, which belongs to the field of node scheduling in sensor networks, and particularly relates to a method for ensuring K In the case of coverage, the classification of neighbor nodes is used to implement the node scheduling method of heterogeneous wireless sensor networks. [0002] Background technique [0003] Wireless sensor network is a new type of network that emerges with the development of MEMS and wireless communication technology. In the past two years, wireless sensor network has received extensive attention and research from experts. Generally speaking, a wireless sensor network is composed of a large number of cheap and miniature sensor nodes deployed in the monitoring area, forming a multi-hop self-organizing network system through wireless communication, which can cooperatively sense, collect and process information in the network ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/08H04W52/02H04W84/18
CPCY02D30/70
Inventor 孙力娟魏静肖甫郭剑王汝传韩崇杜晓玉
Owner NANJING UNIV OF POSTS & TELECOMM
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