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Cognitive radio based communication network system in intelligent power grid and networking method

A cognitive radio and smart grid technology, applied in the field of smart grid networking, can solve problems such as network congestion, reduced transmission efficiency, and lower security performance than Bluetooth, and achieve the effects of high-efficiency transmission, resource saving, and bandwidth saving

Inactive Publication Date: 2013-06-26
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, the transmission speed of the Wi-Fi network is very fast, which can reach 11Mb / s, but the quality of the transmission is not very good, and the security performance is not as good as that of Bluetooth
Although obstacles can be bypassed by adding ZigBee routing nodes, this will increase the capacity of the network and the cost of the network, and in some cases it is not allowed to deploy another network node
In addition, when the network node density is high, using a separate ZigBee frequency band may lead to a decrease in transmission efficiency and network congestion.

Method used

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  • Cognitive radio based communication network system in intelligent power grid and networking method
  • Cognitive radio based communication network system in intelligent power grid and networking method
  • Cognitive radio based communication network system in intelligent power grid and networking method

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Embodiment 1

[0059] Embodiment 1 of the present invention provides a communication network system based on cognitive radio in a smart grid. The network architecture is as follows figure 1 As shown, in this embodiment, the smart grid networking architecture in a building is taken as an example for illustration, specifically including:

[0060] Sensor nodes, sink nodes and backbone network.

[0061] The schematic diagram of the composition of the sensor node is as follows: figure 2 As shown, it specifically includes a sensing module 11 , a first calculation control module 12 and a first wireless communication module 13 .

[0062] Wherein, the sensing module 11 includes a power sensor, capable of detecting power information (electricity, current, voltage, etc.). The calculation control module 12 performs analog-to-digital conversion according to the information detected by the sensor module 11, and performs further calculation to realize control.

[0063] The first wireless communication ...

Embodiment 2

[0089] Embodiment 2 of the present invention also provides a method for networking a communication network based on cognitive radio in a smart grid, and the steps are as follows Image 6 As shown, it specifically includes the following steps:

[0090] Step S1: The sensor node searches whether there is a sensor node network within the range, if not, do not process, otherwise enter step S2.

[0091] Step S2: Select a coordinator within the sensor node network range, initiate a network access request, and wait for a reply from the coordinator.

[0092] In the established network, the main function of the sensor node acting as a non-coordinator is to collect and send out the environmental parameters, and the receiver can be its parent node or the coordinator.

[0093] After receiving the network access request sent by the sensor node, the coordinator will decide whether to allow the sensor node to join the network according to the parameter information sent.

[0094] Step S3: Th...

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Abstract

The invention discloses a cognitive radio based communication network system in an intelligent power grid and a networking method. The system comprises a sensor node, a convergence node and a backbone network, a radio communication module in the sensor node comprises a cognitive selection control module, and a ZigBee radio frequency module with a radio communication function and a 230MHz radio frequency module. The cognitive selection control module periodically detects channel availability of empty frequency ranges in a network, and enters the radio modules corresponding to the selected frequency ranges for communication if the channel availability meets communication requirements, the sensor node senses frequency spectrum emptiness and selects proper frequency ranges to communicate with the convergence node, and the convergence node collects and compresses uploaded data and uploads the data to the backbone network on the basis of power line carrier waves. By combining the 2.4GHz frequency range with the 230MHz frequency range, applying cognitive radio into transmission of the intelligent power grid to sense current frequency spectrum occupancy, and automatically switching among multiple frequency ranges, intelligentized and efficient data transmission is realized.

Description

technical field [0001] The invention relates to the technical field of smart grid networking, in particular to a communication network system and networking method based on cognitive radio in the smart grid. Background technique [0002] In the wireless monitoring and remote meter reading system of the smart grid, the selection of data network technology generally needs to have: first, the established network must have automatic networking functions, reliable data transmission and other performance; second, flexible networking methods, low-cost Accurate control, low energy consumption, and high transmission security are must-haves for a wireless sensor network monitoring system. [0003] At this stage, the popular and popular short-range wireless data network technologies are Wi-Fi, Bluetooth technology, ZigBee, Ultra Wideband (UWB for short) and Near Field Communication (NFC for short). These technologies are introduced below: [0004] 1. Bluetooth technology (Bluetooth) ...

Claims

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Application Information

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IPC IPC(8): H04W84/22
Inventor 侯宾俎云霄胡冬晶丁俊杰
Owner BEIJING UNIV OF POSTS & TELECOMM
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