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A frequency selection method and sensor nodes for a wireless sensor network

A sensor node and wireless sensor technology, applied in the field of communication, can solve the problems of wireless sensor network interference and low utilization rate of wireless frequency resources, and achieve the effect of reducing interference and improving usage efficiency

Active Publication Date: 2018-08-28
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a frequency selection method for a wireless sensor network and a sensor node, which are used to solve the problem of low utilization of wireless frequency resources and wireless sensor network interference in the prior art because wireless sensor networks need to use dedicated frequencies. serious technical problem

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  • A frequency selection method and sensor nodes for a wireless sensor network
  • A frequency selection method and sensor nodes for a wireless sensor network
  • A frequency selection method and sensor nodes for a wireless sensor network

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Embodiment 1

[0035] Embodiment 1 of the present invention mainly introduces the process of determining the working frequency of wireless sensor nodes in a wireless sensor network.

[0036] All or part of the wireless sensor network is within the coverage of a cellular network system, the cellular network system includes K base stations, and each base station is assigned an operating frequency, and the K base stations correspond to N operating frequencies, wherein, K is greater than or equal to N, and N is greater than 1.

[0037] In the specific implementation process, the cellular network system can be a cellular system such as Global System for Mobile Communications (GSM), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), etc. The network systems are not listed one by one in this embodiment.

[0038] Such as figure 1 As shown, it is a flowchart of a frequency selection method for a wireless sensor network proposed in Embodiment 1 of the present invention, and i...

Embodiment 2

[0053] After the working frequency of the sensor nodes is determined by the method proposed in Embodiment 1 of the present invention, to ensure high-quality data transmission between sensor nodes and increase the signal-to-noise ratio, it is also necessary to determine the transmit power during communication between sensor nodes.

[0054] Embodiment 2 mainly introduces the process of determining the transmitting power when the sensor node communicates with other sensor nodes in the wireless sensor network after determining the working frequency of the sensor.

[0055] Please refer to image 3 , image 3 It is a schematic diagram of communication between sensor nodes in the second embodiment.

[0056] In Embodiment 2 of the present invention, communication between sensor nodes can be divided into communication between sensor nodes at a relatively long distance and communication between sensor nodes at a short distance. The schemes for determining the transmission power in the...

Embodiment 3

[0072] Corresponding to the frequency selection method for a wireless sensor network provided in Embodiment 1 of the present invention, Embodiment 3 of the present invention provides a sensor node, where all or part of the wireless sensor network where the sensor node is located is within the coverage of a cellular network system, The cellular network system includes K base stations, and each base station is assigned a working frequency. The K base stations correspond to N working frequencies, wherein K is greater than or equal to N, and N is greater than 1. The structure is as follows Figure 4 shown, including:

[0073] A determination module 41, configured to determine the worst operating frequency with the worst signal quality among the N operating frequencies;

[0074] A setting module 42, configured to determine the worst operating frequency as the sensor operating frequency of the first sensor node.

[0075] Please refer to Figure 5 , Figure 5 It is a detailed stru...

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Abstract

The invention discloses a frequency selection method of a wireless sensor network and a sensor node. The method includes: the first sensor node in the wireless sensor network determines that the signal quality is the worst among N operating frequencies of a base station in a cellular network system The worst operating frequency; determining the worst operating frequency as the sensor operating frequency of the first sensor node. The technical scheme of the invention solves the technical problems in the prior art that the wireless sensor network needs to use a dedicated frequency, so that the utilization rate of wireless frequency resources is low, and the wireless sensor network has serious interference.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a frequency selection method and a sensor node of a wireless sensor network. Background technique [0002] Wireless sensor network is the current frontier hot research field. It is composed of a large number of sensor nodes deployed in the monitoring area. The sensor nodes form a self-organized network system through wireless communication. The data monitored by the sensor nodes is hop by hop along other sensor nodes. The information of the perceived object in the network coverage area is realized, collected and processed, and sent to the observer. [0003] Wireless sensor networks mostly use wireless self-organizing technology for networking, but with the wide application of various wireless communication technologies, the existing frequency resources are increasingly exhausted, and it is difficult to allocate frequency resources dedicated to wireless sensor networks. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/24H04W84/18
CPCH04W72/0453H04W84/18H04W72/542
Inventor 刘玮牛亚文陈宇张勇
Owner CHINA MOBILE COMM GRP CO LTD