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Clustering routing method based on cognitive wireless sensor network

A sensor network and cognitive wireless technology, applied in the field of cluster routing based on cognitive wireless sensor network, can solve the problems of extremely unbalanced use of licensed and unlicensed spectrum, severe use of spectrum resources, etc., and prolong the network monitoring period. , the effect of improving spectrum utilization, improving spectrum utilization and energy efficiency

Active Publication Date: 2020-04-07
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

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  • Clustering routing method based on cognitive wireless sensor network
  • Clustering routing method based on cognitive wireless sensor network
  • Clustering routing method based on cognitive wireless sensor network

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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 invention relates to a wireless communication technology, provides a clustering routing method based on a cognitive wireless sensor network, and the clustering routing method comprises the following steps: dynamic spectrum sensing clustering: clustering nodes in the range of the cognitive wireless sensor network by adopting a hierarchical clustering algorithm in combination with available channels and distances among the nodes obtained by spectrum sensing, and constructing a clustering topological structure; triggering data routing by an event, and forwarding the data triggered by each region of the cognitive wireless sensor network to a sink node in an intra-cluster sink and inter-cluster relay alternate iteration mode according to the constructed clustering topological structure; andadaptive re-clustering based on frequency spectrum change and communication service quality: triggering the cognitive wireless sensor network to perform adaptive re-clustering based on available channel change caused by PU behavior change of a main user or interference of poor clustering effect on the communication service quality. According to the invention, the spectrum utilization rate and theenergy efficiency of the network can be effectively improved while the network monitoring period is prolonged.

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...

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Application Information

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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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