Cluster establishing and routing method for cognitive radio sensor network without common control channel

A sensor network and cognitive wireless technology, which is applied in the field of cluster construction and routing without common channels in cognitive wireless sensor networks, can solve problems such as difficult implementation of global CCC

Active Publication Date: 2016-08-17
湖南艾依灵科技有限公司
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Problems solved by technology

However, in reality, global

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  • Cluster establishing and routing method for cognitive radio sensor network without common control channel
  • Cluster establishing and routing method for cognitive radio sensor network without common control channel
  • Cluster establishing and routing method for cognitive radio sensor network without common control channel

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Embodiment Construction

[0176] The invention uses OMNet++ to simulate NCCCR, and analyzes the effectiveness and performance of the algorithm on the basis of simulation. The network is a circular area with a radius of 200m. The sink node (Sink Node, SN) is located in the very center (0,0) of the network area. There are 5 primary users (PrimaryUsers, PUs) and 500 secondary users ( Secondary Users, SUs), the number of channels is 8. Each node senses the environment and generates data periodically, and its data generation rate is 0.2. Other main experimental parameter settings are shown in Table 1.

[0177] Table 1 Experimental parameter settings

[0178]

[0179] The following is the performance evaluation of NCCCR from the aspects of network lifetime, energy balance, and network connectivity.

[0180] 1. Network Lifespan

[0181] WSN is energy limited, and nodes will die once they run out of energy. In the present invention, the lifespan of the network is reflected by the number of alive nodes....

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Abstract

The invention discloses a cluster establishing and routing method for a cognitive radio sensor network without a common control channel. A plurality of clusters which are uneven in size are established through a plurality of turns of cluster establishing operation according to the near-to-distant sequence to an SN (sink node); except for sensor node SUs (secondary users) directly communicating with the SN, other SUs are covered with a unique cluster; in each turn of cluster establishing operation, cluster radius calculation, cluster head (CH) selection, cluster channel selection and cluster structure formation are sequentially executed; in the cluster radius calculation process, three energy consumption situations are analyzed, wherein the three situations comprise the energy consumption situation of a node near to the SN, the energy consumption situation of a cluster head of the cluster nearest to the SN, and the energy consumption situation of cluster heads of the clusters far away from the SN, and energy consumption of the nodes in the network is balanced by establishing an uneven cluster. The cluster head is selected by comprehensively considering the rest energy of the nodes, the number of available channels and the distance with an upstream cluster head. The energy consumption of the nodes in the network can be balanced easily, and the service life of the network can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a cluster construction and routing method without a common channel in a cognitive wireless sensor network. Background technique [0002] Cognitive Radio (CR) is an intelligent communication system that enables unauthorized secondary users (Secondary Users, SUs) to perceive and use of vacant spectrum. Network performance can be improved by efficiently using spectrum resources. The CR function is configured on the wireless sensor node (Sensor), thus forming a new network form, that is, the cognitive wireless sensor network (Cognitive Radio Sensor Network, CRSN). [0003] In CRSN, Sensor can detect available channels through spectrum sensing and select communication channels through spectrum decision-making. Once a PU appears on the Sensor's communication channel, the Sensor can detect it immediately and switch to other free channels. [0004] Since CRSN is a combin...

Claims

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Application Information

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IPC IPC(8): H04W40/02H04W40/20H04W52/02H04W84/18
CPCH04W40/02H04W40/20H04W52/0206H04W84/18Y02D30/70
Inventor 曾锋陈雪寒陈志刚
Owner 湖南艾依灵科技有限公司
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