Two-stage node scheduling method for wireless sensor network

A technology of wireless sensors and scheduling methods, applied in wireless communication, advanced technology, electrical components, etc., can solve the problems of running out of node energy, not considering the size of redundant coverage area, and uneven energy consumption of nodes, so as to prolong the life cycle. , the effect of optimizing network resources and reducing network energy consumption

Active Publication Date: 2012-09-19
FUZHOU UNIV
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Problems solved by technology

[0003] In the prior art, some methods consider how to reduce the energy consumption of the network. These methods can effectively reduce the redundant coverage area and the number of nodes in the working state in the network, but there are certain coverage holes in the network. Can't guarantee the coverage quality of the network well
Other methods are mainly considered from the aspect of maintaining the quality of network coverage. These method

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  • Two-stage node scheduling method for wireless sensor network
  • Two-stage node scheduling method for wireless sensor network
  • Two-stage node scheduling method for wireless sensor network

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Embodiment Construction

[0011] The wireless sensor network two-stage node scheduling method of the present invention combines a centralized node scheduling mechanism and a distributed node scheduling mechanism, and performs two-stage node scheduling in each cluster after clustering is completed. Such as figure 1 As shown, the method includes the following steps:

[0012] Step 1: Divide the network into clusters, and elect cluster head nodes, and non-cluster head nodes select cluster heads;

[0013] Step 2: Carry out the first stage of node scheduling: on the basis of the completion of clustering, the member nodes in each cluster send their own information to the cluster head node, and the cluster head node runs the centralized node scheduling mechanism according to the received member node information, Perform unified scheduling on the member nodes in the cluster; send the scheduled node status information to each member node, and the member nodes update their own status after receiving the informat...

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Abstract

The invention relates to the technical field of wireless sensors, in particular to a two-stage node scheduling method for a wireless sensor network. A centralizing node scheduling mechanism is combined with a distributing node scheduling mechanism, and the two two-stage node scheduling is performed in each cluster after clustering. The method includes: firstly, clustering the network, electing cluster head nodes, and performing cluster head selection to non-cluster-head nodes; secondly, applying the centralizing node scheduling mechanism to the cluster head nodes on the basis of clustering at a first state, and uniformly scheduling member nodes in the clusters; thirdly, using the distributing node scheduling mechanism at a second stage to perform uniform self-scheduling to each member node according to neighboring node information and self residual energy on the basis of a first-stage scheduling result. By the method, network coverage quality is guaranteed, network energy consumption is reduced, and life cycle of the network is prolonged.

Description

technical field [0001] The invention relates to the technical field of wireless sensors, in particular to a two-stage node scheduling method for a wireless sensor network. Background technique [0002] A wireless sensor network is organized by a large number of sensor nodes, which are responsible for sensing data in the network area and sending the sensed data to the base station. The direct management of all nodes through the base station will increase the communication overhead, management delay and management complexity of the network, thereby affecting the real-time performance of the network and increasing the energy consumption of the network. Clustering algorithm is one of the effective methods to solve this problem. The clustering algorithm is to manage sensor nodes in groups according to certain rules. Each cluster selects a cluster head node, which is responsible for data collection in the cluster, management of member nodes, and communication with other clusters....

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Application Information

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IPC IPC(8): H04W72/12
CPCY02D30/70
Inventor 郭文忠陈国龙余朝龙
Owner FUZHOU UNIV
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