Base station multichannel phase synchronization device and method and base station

A phase synchronization, multi-channel technology, applied in the field of communication, to achieve the effect of small insertion loss, convenient system wiring, and simplifying the overall structure of the base station

Pending Publication Date: 2021-02-02
ZTE CORP
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  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem of base station multi-channel phase s

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  • Base station multichannel phase synchronization device and method and base station
  • Base station multichannel phase synchronization device and method and base station
  • Base station multichannel phase synchronization device and method and base station

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[0054]In order to further illustrate the technical means and effects of the present invention to achieve the predetermined purpose, the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0055]In related technologies, in order to maintain the synchronization state of the phase between the various channels of the base station, most base stations adopt a common local oscillator scheme, such asfigure 1 Shown. The base station system of the common local oscillator solution is composed of the same clock generator 122, PLL (local oscillator generator) 101, local oscillator distributor 102 and amplifier circuits 103, 109, and 114.

[0056]The biggest feature of the common local oscillator solution is that the local oscillator signals of all the transceiver channels of the whole machine come from the same local oscillator generator 101, which can ensure that the phase of each channel mixer is the same, as long as the baseba...

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Abstract

The invention provides a base station multichannel phase synchronization device, a base station multichannel phase synchronization method and a base station, and the base station multichannel phase synchronization device comprises a plurality of channels, a clock circuit and a calibration circuit. Each channel is provided with a local oscillator circuit used for generating a local oscillator signal, and the clock circuit is connected with each channel to provide a clock signal for each channel. The calibration circuit is used for obtaining the phase difference of each channel relative to the reference channel and performing phase calibration on each channel based on the phase difference. According to the multi-channel phase synchronization device of the base station, each channel is independently provided with the local oscillation circuit, and all the channels share one synchronous clock. Therefore, the phases of the channels are synchronized to a certain extent through the common clock reference. Moreover, because the clock signal frequency is low and the insertion loss is small, an amplifier does not need to be arranged, the influence of stray does not need to be considered toomuch, the overall structure of the base station is effectively simplified, and the problem of multi-channel phase synchronization of the base station is solved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a base station multi-channel phase synchronization device, method and base station. Background technique [0002] The latest communication technology puts forward higher requirements for signal phase control. Both Massive MIMO and beamforming technology require that the phase and amplitude of the array unit can be precisely controlled. [0003] In order to maintain a phase synchronization state between channels, in the related art, most base stations adopt a co-local oscillator scheme. However, with the continuous increase in the number of system array units and the number of channels, the LO distribution and routing in the common LO solution are inconvenient to design, and the PCB area is occupied, resulting in an increase in the overall volume. Contents of the invention [0004] The technical problem to be solved by the present invention is to solve the proble...

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Application Information

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IPC IPC(8): H04W56/00H04W88/08
CPCH04W56/004H04W88/08H04W56/00H04B17/21H04L7/033H04L7/0008H04W56/0035
Inventor 段沛
Owner ZTE CORP
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