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Channel reciprocity calibration method, device, equipment, medium and program product

A technology of channel reciprocity and calibration method, which is applied in media and program products, channel reciprocity calibration method, device, and equipment field, which can solve the problem of lack of versatility, inability to realize RRU transparent support, and no consideration of RRU reception in advance and other issues to achieve the effect of improving accuracy

Pending Publication Date: 2022-08-09
PURPLE MOUNTAIN LAB
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Problems solved by technology

[0004] However, the reciprocity calibration in related technologies does not consider the early reception of RRU in the 5G standard, and cannot realize transparent support for RRU, and is not universal

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  • Channel reciprocity calibration method, device, equipment, medium and program product
  • Channel reciprocity calibration method, device, equipment, medium and program product
  • Channel reciprocity calibration method, device, equipment, medium and program product

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Embodiment Construction

[0068] In order to make the objectives, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0069] The method for calibrating channel reciprocity provided by the embodiments of the present application may be as follows figure 1 in the application environment shown. The BBU generates the antenna orthogonal pilot sequence, and generates calibration symbols through preset signal processing operations, and then the BBU sends the generated calibration symbols to the second group of RRUs through the first group of RRUs, and the second group of RRUs will receive The symbols sent through the first group of RRUs are sent to the BBU to obtain the first frequency domain channel ...

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Abstract

The invention relates to a channel reciprocity calibration method and device, equipment, a medium and a program product. The method comprises the following steps: generating a calibration symbol through a preset signal processing operation based on a multi-antenna orthogonal pilot frequency sequence, sending the calibration symbol to a second group of RRUs through a first group of RRUs to obtain a first frequency domain channel matrix from the first group of RRUs to the second group of RRUs, sending the calibration symbol to the first group of RRUs through the second group of RRUs to obtain a second frequency domain channel matrix from the second group of RRUs to the first group of RRUs, and determining a calibration coefficient between the first group of RRUs and the second group of RRUs according to the first frequency domain channel matrix and the second frequency domain channel matrix, and performing transmit-receive reciprocity calibration on channels of the first group of RRUs and the second group of RRUs according to the calibration coefficient. According to the method, advanced reception of the RRU in the 5G standard is considered during reciprocity calibration, transparent support for the RRU is realized, and the method has universality.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to a method, apparatus, device, medium and program product for calibrating channel reciprocity. Background technique [0002] Distributed cooperative multi-antenna technology is an effective technical way to improve the spectral efficiency of the system. [0003] In general, the distributed cooperative multi-antenna technology adopts the time division duplex mode, and utilizes the reciprocity of the uplink and downlink air interface channels to avoid downlink channel feedback, thereby improving the spectral efficiency of the mobile communication system. However, in an actual communication system, since the transceiver channel circuits of multiple remote radio units (Remote Radio Unit, RRU) are different, the overall uplink and downlink channels are not reciprocal. Based on this, reciprocity calibration is required. In the related art, reciprocity calibratio...

Claims

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Application Information

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IPC IPC(8): H04L25/03H04L25/02H04B7/024
CPCH04L25/0398H04L25/0242H04L25/0228H04B7/024
Inventor 王东明王盼曹阳尤肖虎
Owner PURPLE MOUNTAIN LAB
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