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A Clustering Routing Method Based on Cognitive Wireless Sensor Networks

A sensor network and cognitive wireless technology, which is applied in the field of cluster routing based on cognitive wireless sensor networks, can solve problems such as the severe use of spectrum resources and the extremely unbalanced use of licensed and unlicensed spectrum, so as to improve spectrum utilization and Energy Efficiency, Network Lifetime Improvement, Effect of Energy Efficiency Improvement

Active Publication Date: 2021-09-24
SOUTH CHINA AGRI UNIV
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Problems solved by technology

The traditional "static compartmentalization" strategy makes the use of licensed and unlicensed spectrum extremely unbalanced, and the use of spectrum resources is becoming increasingly severe

Method used

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  • A Clustering Routing Method Based on Cognitive Wireless Sensor Networks
  • A Clustering Routing Method Based on Cognitive Wireless Sensor Networks
  • A Clustering Routing Method Based on Cognitive Wireless Sensor Networks

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Embodiment Construction

[0034] The embodiments of the present invention will be described in detail below with reference to the examples and drawings, but the embodiments of the present invention are not limited thereto.

[0035] The present invention studies the CRSN clustering routing oriented to a single-layer network structure. The biggest difference between it and the double-layer network structure is that the CRSN node not only has the function of data collection, but also needs to take on the role of forwarding data of other nodes. The CH, CM and gateway nodes in the network are essentially the same CRSN node, but they play different roles in the process of collecting and forwarding data. The present invention adopts the clustering mechanism of spectrum self-adaptive change and adopts the energy consumption balancing strategy in order to prolong the life cycle, specifically as follows:

[0036] 1. Establish a monitoring model and evaluation index based on cognitive wireless sensor network

[...

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Abstract

The present invention relates to wireless communication technology, which is a clustering routing method based on cognitive wireless sensor networks, including the steps of: dynamic spectrum sensing clustering, using a hierarchical clustering algorithm combined with spectrum sensing to obtain available channels and distances between nodes for cognitive wireless The nodes within the range of the sensor network are clustered and clustered to build a cluster topology; event-triggered data routing, according to the constructed cluster topology, the data triggered by each area of ​​the cognitive wireless sensor network is aggregated within the cluster and inter-cluster The relay is forwarded to the aggregation node in an alternate and iterative manner; adaptive re-clustering based on spectrum changes and communication service quality: based on the change of the available channel caused by the behavior of the primary user PU, or the interference caused by the poor clustering effect on the communication service quality , triggering adaptive re-clustering in cognitive wireless sensor networks. While prolonging the network monitoring cycle, the present invention can also effectively improve the frequency spectrum utilization rate and energy efficiency of the network.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a clustering routing method based on a cognitive wireless sensor network. Background technique [0002] With the rapid upgrading of mobile wireless communication technology, the devices connected to the network are increasing at a massive rate. The traditional "static compartmentalization" strategy makes the use of licensed and unlicensed spectrum extremely unbalanced, and the use of spectrum resources is becoming increasingly severe. The advent of cognitive radio (Cognitive Radio, CR) provides a new idea for solving the overcrowded ISM (Industrial, Scientific and Medical) unlicensed frequency band. [0003] At the same time, with the development of Wireless Sensor Networks (WSN) in recent decades, it is playing an increasingly important role in the fields of environmental monitoring and perception. In order to cope with the challenge of scarce spectrum resources, traditiona...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/10H04W40/08
CPCH04W40/08H04W40/10Y02D30/70
Inventor 韩宇星汪进鸿王乐乐
Owner SOUTH CHINA AGRI UNIV
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