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A Spectrum Scanning Method for Power Wireless Private Network System

A wireless private network and spectrum scanning technology, which is applied in transmission systems, wireless communications, electrical components, etc., can solve the problems of not improving the computational complexity of spectrum occupancy, reduce computational complexity, reduce system power consumption, and avoid mutual interference Effect

Active Publication Date: 2021-10-29
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent is only aimed at the hierarchical spectrum sensing method in cognitive wireless networks, and does not improve the complexity of spectrum occupancy calculations

Method used

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  • A Spectrum Scanning Method for Power Wireless Private Network System
  • A Spectrum Scanning Method for Power Wireless Private Network System
  • A Spectrum Scanning Method for Power Wireless Private Network System

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Embodiment Construction

[0030] Below, in conjunction with the accompanying drawings, preferred embodiments of the present invention are given and described in detail, so that the functions and features of the present invention can be better understood.

[0031] Such as figure 1 Shown is an applicable scenario of the spectrum scanning method of the electric power wireless private network system according to a preferred embodiment of the present invention. The power wireless private network system includes a base station 1 and a terminal 2, both of which are equipped with receivers. In addition, the power wireless private network system may also include a dedicated spectrum scanning device 3 provided with a receiver. The receiver includes an antenna, a mixer, an ADC and a baseband processing device connected in sequence. The receiver receives the radio frequency signal through the antenna, and then down-converts the radio frequency signal to an intermediate frequency through the mixer. At the intermed...

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Abstract

The invention provides a spectrum scanning method for a power wireless private network system, comprising: determining a frequency scanning time slot in a frame structure, and performing spectrum scanning in it; dividing the scanning frequency band to be scanned into a plurality of subbands; and taking the extraction factor as The data is extracted at intervals, and the sub-band signals whose interference conditions have not been determined in the scanning frequency band are extracted; the fast Fourier transform is performed on the extracted signals, and the energy value is obtained according to the obtained spectrum signal, and the frequency point where the sub-band is located is determined according to the judgment result of the energy value. Repeat the above steps until the spectrum scanning is complete; splicing out the interference situation of each frequency point in the whole system, and reporting the situation. The spectrum scanning method of the power wireless private network system of the present invention can reduce the influence of the spectrum scanning on the communication quality of the user and the throughput of the power wireless private network system, avoid the mutual interference of various frequency points, and reduce the signal while quickly sensing the frequency interference situation. Sampling rate requirements and reduce computational complexity.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a spectrum scanning method of a power wireless private network system. Background technique [0002] The power wireless private network communicates based on the 230MHz dedicated frequency band allocated by the State Radio Regulatory Commission. Its frequency points are discretely distributed in a total of 12MHz bandwidth from 223MHz to 235MHz, and each frequency point has a bandwidth of 25KHz. In addition, there are 360 ​​frequency points within this frequency range ( A total of 9MHz bandwidth) is approved by the radio management offices of various cities and needs to be applied for use. With the application and promotion of electric power wireless private network, 230MHz electric power wireless private network, 230MHz data transmission radio station and other high-power radio stations may coexist in the spectrum of 230MHz frequency band at the same ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/382H04B17/345H04W24/02
CPCH04W24/02H04B17/345H04B17/382
Inventor 周志刚张梦莹李慧杨秀梅王海峰卜智勇陆犇郑敏
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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