Channel correction method, device and communication system

Abstract

An embodiment of the present application provides a channel calibration method for channel calibration of radio frequency devices in a network area, including: controlling the first radio frequency device to send a first calibration signal at a first resource location according to configuration information within a calibration period , and receive the first received signal of the first correction signal from the second radio frequency device, wherein the first resource location is the resource location where the first radio frequency device sends the correction signal, and the second radio frequency device is the resource location in the radio frequency device group where the first radio frequency device is located The radio frequency device; according to the configuration information, the first radio frequency device obtains the second received signal of the second correction signal at the second resource position within the correction period, wherein the second resource position is the resource position where the second radio frequency device sends the second correction signal ; Compensating the channel of the first radio frequency device according to the first calibration signal, the second calibration signal, the first received signal and the second received signal. The method realizes combined channel correction of multiple radio frequency devices and improves correction efficiency.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of wireless communication, and in particular, to a channel correction method, device and communication system. Background technique [0002] In a wireless communication system, overlapping coverage of cells will cause interference to terminals. Please refer to figure 1 , base station 111 and base station 112 have overlapping coverage areas, and terminals in the overlapping coverage area will be interfered by base stations other than their serving base stations. The dotted line in the figure represents the interference, and the solid line represents the useful signal. For example, the serving base station of terminal 113 is 111 , which will be interfered by base station 112 , and the serving base station of terminal 114 is base station 112 , which will be interfered by base station 111 . [0003] With the development of communication technology, distributed multiple-input multiple...

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Problems solved by technology

[0006] For the channel calibration in the DMIMO scenario, the channel calibration is performed between multiple radio frequency devices. Due to the influence of the environment of each radio frequency device, the length of the fiber, and the different sources of the clock, the phase changes between the radio frequency devices are relatively fast, and the change trend is inconsistent. , the existing correction methods can no longer meet the performance requirements of DMIMO, and faster channel correction is required

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