Method and device for measuring spectrum occupation ratio

Abstract

The invention discloses a method for measuring a spectrum occupation ratio, which comprises the following steps: detecting signal strength in a channel, and comparing the detected signal strength with a threshold to obtain a comparison result sequence; and according to the law of large numbers and central limit theorem, analyzing the comparison result sequence by following the normal distribution law, and estimating the spectrum occupation ratio, a confidence interval and relative accuracy thereof. The invention also discloses a device for measuring the spectrum occupation ratio. The method and the device can ensure that the measured spectrum occupation ratio has a reasonable confidence interval; besides, under the condition of the same confidence level and relative accuracy, the number of sampling points is much less than that of sampling points in the prior art, particularly under the condition of a high occupation ratio.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a method and device for measuring frequency spectrum occupancy. Background technique [0002] Radio spectrum resources are important non-renewable resources, and the effective use of spectrum is one of the important factors that should be considered in spectrum management. Spectrum occupancy is the embodiment of effective use of spectrum. The measurement results of spectrum occupancy can not only provide spectrum managers with information about the actual use of spectrum, which is convenient for spectrum managers to assign frequencies, but also provide spectrum usage trends for frequency authorities. Information. Spectrum occupancy measurement is an important part of daily radio spectrum monitoring. [0003] At present, there are many measurement methods for the spectrum occupancy, and most of the measurement methods are to obtain the value of the occupancy on the basis ...

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Problems solved by technology

[0005] In the actual measurement, the ITU measurement method uses the mathematical model of Poisson distribution to measure the spectrum occupancy, which has certain limitations: the ITU measurement method is suitable for the case of small occupancy, and for the case of large occupancy, the upper limit of the confidence interval There will be unreasonable situations greater than 100%, and the number of sampling points is large, making the measurement process more complicated and cumbersome

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