Method and device for adjusting carrier frequency of multiple-input multiple output microwave device
First Claim
1. A method for adjusting a carrier frequency of a multiple-input multiple-output microwave device, comprising:
- obtaining, by an indoor unit (IDU), a frequency of a radio frequency-reference crystal oscillator and a first frequency multiplication factor of each outdoor unit (ODU), wherein the first frequency multiplication factor is a ratio of a transmit frequency design value of a remote radio frequency unit corresponding to each ODU to the frequency of the radio frequency-reference crystal oscillator of the ODU;
selecting, by the IDU, one of the frequencies of the radio frequency-reference crystal oscillators as a reference frequency, wherein an ODU corresponding to the reference frequency is a reference ODU; and
adjusting, by the IDU, a carrier frequency of the multiple-input multiple-output microwave device according to the first frequency multiplication factor and a radio frequency offset between the reference frequency and the frequency of the radio frequency-reference crystal oscillator of each of the other ODUs, wherein the other ODUs refer to all the ODUs except the reference ODU.
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Abstract
The present invention provides a method and a device for adjusting a carrier frequency of a multiple-input multiple-output microwave device. The method includes: obtaining, by an indoor unit IDU, a frequency of a radio frequency-reference crystal oscillator and a first frequency multiplication factor of each outdoor unit ODU; selecting, by the indoor unit IDU, one of the frequencies of the radio frequency-reference crystal oscillator as a reference frequency; adjusting, by the indoor unit IDU, a carrier frequency of the multiple-input multiple-output microwave device according to the first frequency multiplication factor and a radio frequency offset between the reference frequency and the frequency of the radio frequency-reference crystal oscillator of each ODU.
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Citations
9 Claims
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1. A method for adjusting a carrier frequency of a multiple-input multiple-output microwave device, comprising:
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obtaining, by an indoor unit (IDU), a frequency of a radio frequency-reference crystal oscillator and a first frequency multiplication factor of each outdoor unit (ODU), wherein the first frequency multiplication factor is a ratio of a transmit frequency design value of a remote radio frequency unit corresponding to each ODU to the frequency of the radio frequency-reference crystal oscillator of the ODU; selecting, by the IDU, one of the frequencies of the radio frequency-reference crystal oscillators as a reference frequency, wherein an ODU corresponding to the reference frequency is a reference ODU; and adjusting, by the IDU, a carrier frequency of the multiple-input multiple-output microwave device according to the first frequency multiplication factor and a radio frequency offset between the reference frequency and the frequency of the radio frequency-reference crystal oscillator of each of the other ODUs, wherein the other ODUs refer to all the ODUs except the reference ODU. - View Dependent Claims (2, 3, 4)
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5. An apparatus for adjusting a carrier frequency of a multiple-input multiple-output microwave device, comprising:
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an obtaining module, configured to obtain a frequency of a radio frequency-reference crystal oscillator and a first frequency multiplication factor of each outdoor unit (ODU), wherein the first frequency multiplication factor is a ratio of a transmit frequency design value of a remote radio frequency unit corresponding to each ODU to the frequency of the radio frequency-reference crystal oscillator of the ODU; a selecting module, configured to select one of the frequencies of the radio frequency-reference crystal oscillators as a reference frequency, wherein an ODU corresponding to the reference frequency is a reference ODU; and an adjusting module, configured to adjust a carrier frequency of the multiple-input multiple-output microwave device according to the first frequency multiplication factor and a radio frequency offset between the reference frequency and the frequency of the radio frequency-reference crystal oscillator of each of the other ODUs, wherein the other ODUs refer to all the ODUs except the reference ODU. - View Dependent Claims (6, 7, 8, 9)
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Specification