A base station frequency adjustment method and device

A frequency adjustment and frequency technology, which is applied in the field of base station frequency adjustment methods and devices, can solve the problems of high requirements on the frequency accuracy index of the local oscillator chip and the deterioration of system performance, and achieves suppression of fractional frequency spurious, phase noise is not affected, The effect of optimizing system performance

Active Publication Date: 2018-11-16
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0008] The present invention provides a base station frequency adjustment method and device to solve the problems of system performance deterioration and high requirements for the frequency accuracy index of the local oscillator chip

Method used

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  • A base station frequency adjustment method and device
  • A base station frequency adjustment method and device
  • A base station frequency adjustment method and device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A base station frequency adjustment method provided by an embodiment of the present invention is introduced in detail.

[0061] refer to figure 2 , shows a flow chart of a base station frequency adjustment method in an embodiment of the present invention.

[0062] Step 100, acquiring the original local oscillator frequency.

[0063] The original local oscillator frequency without adjusting the digital frequency is obtained according to the cell center frequency and the fixed intermediate frequency set in the base station.

[0064] Step 102, adjusting the original local oscillator frequency to obtain a target local oscillator frequency.

[0065] First, adjust the original local oscillator frequency to obtain the original frequency division value of the original local oscillator frequency; secondly, determine the distance between the obtained original frequency division value and the quantized frequency division value to obtain the target frequency division value; The...

Embodiment 2

[0075] A base station frequency adjustment method provided by an embodiment of the present invention is introduced in detail.

[0076] refer to image 3 , shows a schematic structural diagram of a base station frequency adjustment method in an embodiment of the present invention.

[0077] The solution architecture of the embodiment of the present invention includes four parts, namely baseband processing, radio frequency processing, local oscillator and external antenna.

[0078] refer to Figure 4 , shows a flow chart of a base station frequency adjustment method in an embodiment of the present invention.

[0079] Step 200, acquire the original local oscillator frequency.

[0080] The original local oscillator frequency without adjusting the digital frequency is obtained according to the cell center frequency and the fixed intermediate frequency set in the base station.

[0081] For example, according to f LO1 = f RF -F IF Get the original LO frequency.

[0082] Among ...

Embodiment 3

[0120] A base station frequency adjustment method provided by an embodiment of the present invention is introduced in detail.

[0121] refer to Figure 6 , shows a flow chart of a base station frequency adjustment method in an embodiment of the present invention.

[0122] Step 300, calculate the original local oscillator frequency without adjusting the digital frequency.

[0123] according to f LO1 = f RF -F IF Get the original LO frequency.

[0124] Among them, f LO1 is the original local oscillator frequency, f RF is the cell center frequency, F IF is a fixed IF frequency.

[0125] Step 302, obtaining the original frequency division value of the original local oscillator frequency.

[0126] according to Get the original divider value.

[0127] Among them, f L01 is the original local oscillator frequency, Div_vco is the frequency division value of the voltage-controlled oscillator, which is the ratio of the VCO frequency to the original local oscillator frequency...

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Abstract

The invention provides a base station frequency regulation method and device. The method includes the steps of obtaining an original local frequency, regulating the original local frequency to obtain a target local frequency, obtaining a digital intermediate frequency according to the target local frequency, a cell center frequency and a fixed intermediate frequency, and regulating a base station frequency according to the target local frequency and the digital intermediate frequency. According to the technical scheme, the system performance is improved, the achievement cost is reduced, the base station frequency is not limited by the frequency accuracy of a local oscillator chip, and configuration methods and configuration accuracy of the base station frequency are unified.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a base station frequency adjustment method and device. Background technique [0002] In current wireless system applications, wireless system applications in many industries have their own frequency bands, and their radio frequency operating frequency bands are different from public mobile communication frequency bands. In the application frequency bands of many industries, it is often the case that the signal only occupies part of the bandwidth resources. Due to the limited hardware platform of the current base station, it is sometimes impossible to realize the digital processing of the entire bandwidth range at the same time, and can only process the useful signal bandwidth. For these wide frequency band resources, the method of adjusting the radio frequency local oscillator frequency is usually used to realize the precise adjustment of the base station freque...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W88/08
CPCH04W24/02H04W88/08
Inventor 陈茂云伍坚黄腾张飞张岩鄢凯朱广超沈宇川袁琳杰刘艳雷
Owner DATANG MOBILE COMM EQUIP CO LTD
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