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Wireless multimedia sensor network node clustering method based on related coefficients

A multimedia sensor and correlation coefficient technology, applied in network topology, wireless communication, energy-saving ICT, etc., can solve the problems of communication loss, fast energy consumption, poor network scalability, etc., achieve balanced energy consumption distribution, time delay, and save network energy. Effect

Inactive Publication Date: 2013-03-27
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0002] In a planar wireless sensor network, all nodes are at the same level, and the entire network has no fixed topology. This method is more efficient when the number of nodes is small, but the network scalability of this structure is poor, and the nodes are densely deployed. Excessive communication loss between time nodes will lead to excessive energy consumption

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  • Wireless multimedia sensor network node clustering method based on related coefficients
  • Wireless multimedia sensor network node clustering method based on related coefficients
  • Wireless multimedia sensor network node clustering method based on related coefficients

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[0102] 1. Node Clustering

[0103] Step 1) All nodes {S1, S2,...,SN} deployed in the network broadcast a message in the network after startup, which only contains their own ID numbers, and receive ID numbers sent by other nodes;

[0104] Step 2) According to the received messages from other nodes, record the RSSI value rij corresponding to the ID number (the signal strength of node j received by node i), and set the RSSI value of the node that has not received the message to 0, and then sent to the Sink node.

[0105] Step 3) After receiving the RSSI values ​​sent by all nodes, the Sink node obtains an N×N node signal strength matrix R, and creates an auxiliary clustering set P, P={P1,P2,…PN};

[0106] R = 0 r 12 r 13 . ...

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Abstract

The invention provides a wireless multimedia sensor network node clustering method based on related coefficients, comprising the following steps: utilizing related coefficients of a node to cluster; and electing a cluster head node according to node rest energy and node transmission cost; and therefore, the network management can be efficiently performed, and the redundancy of transmission data is reduced. According to the scheme, the related coefficients of the node are firstly obtained, a related coefficient matrix of the whole network is utilized for constructing clustering, then the election of a cluster head based on cost is performed inside a cluster, and the switching of the cluster head is performed at a proper moment. Through the scheme, the clustering problem in the wireless multimedia sensor network is efficiently solved, cluster head election and switching mechanism is provided, the node energy consumption inside the network is balanced, and the life cycle of the whole network is prolonged.

Description

technical field [0001] The present invention proposes a wireless multimedia sensor network node clustering scheme based on the correlation coefficient, which is mainly used to solve the problem of node clustering in the wireless multimedia sensor network. The life cycle of the network plays a very important role. The invention belongs to the technical field of wireless multimedia sensor network. Background technique [0002] In a planar wireless sensor network, all nodes are at the same level, and the entire network has no fixed topology. This method is more efficient when the number of nodes is small, but the network scalability of this structure is poor, and the nodes are densely deployed. Excessive communication loss between time nodes will lead to excessive energy consumption. Therefore, designing a wireless sensor network capable of efficient dynamic self-organization has become a problem that must be solved. Clustering the network is a feasible solution. On the one ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/10H04W40/12H04W84/18
CPCY02B60/50Y02D30/70
Inventor 王汝传马振徽黄海平孙力娟沙超肖甫蒋凌云徐佳顾翔张军强
Owner NANJING UNIV OF POSTS & TELECOMM
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