Patent ID: 9392602
Filing Date: 2016-07-12
CPC Classification: H04B,H04L,H04W

Claim Text:
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.