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Method for obtaining uplink calibration value, calibration method, and corresponding terminal and base station

A calibration value and downlink technology, applied in baseband system components, receiver monitoring, transmission monitoring, etc., can solve problems such as inaccurate channel covariance estimation, achieve cost-effective signaling overhead, effective MIMO gain, and improve Effect of Calibration Accuracy

Active Publication Date: 2021-08-31
HUAWEI TECH DUESSELDORF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similar to the problem that arises in TDD systems, channel covariance estimation in FDD systems is inaccurate unless hardware chain gain values ​​are estimated and compensated for

Method used

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  • Method for obtaining uplink calibration value, calibration method, and corresponding terminal and base station
  • Method for obtaining uplink calibration value, calibration method, and corresponding terminal and base station
  • Method for obtaining uplink calibration value, calibration method, and corresponding terminal and base station

Examples

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Embodiment Construction

[0041] figure 1 A schematic diagram of a first method embodiment of the invention is shown. The method of the first method embodiment is a method performed by a terminal for obtaining an uplink calibration value in a terminal of a wireless communication system, so that a base station BS having multiple antennas can determine each of the multiple antennas of the BS. Each antenna hardware chain value, wherein, the method includes the following steps: based on the downlink channel estimation value of each antenna of the BS and the normalized value obtained according to the downlink channel estimation value, the terminal calculates each BS of 1BS antennas, and the terminal sends 2 calculated uplink calibration values ​​for each antenna to the BS. Terminals can be, for example, at image 3 The terminal 10 described in the first apparatus embodiment. A base station can be, for example, such as Figure 4 The base station 20 described in the second apparatus embodiment.

[0042] ...

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Abstract

The invention relates to a method for obtaining an uplink calibration value in a terminal of a wireless communication system to enable a base station BS with multiple antennas to determine a respective hardware chain value for each of the multiple antennas, said method It includes the following steps: based on the downlink channel estimation value of each antenna and the normalization value obtained according to the downlink channel estimation value, the terminal calculates the uplink calibration value of each antenna, and the terminal sends to the BS 2 Calculated uplink calibration values ​​for each antenna. The invention also relates to a corresponding terminal 10 for a wireless communication system, suitable for obtaining uplink calibration values. The invention also relates to a corresponding calibration method for determining hardware chain values ​​in the base station 20 and to the corresponding base station 20 itself.

Description

technical field [0001] The present invention relates to a method for obtaining uplink calibration values ​​in a terminal of a wireless communication system to enable a base station (BS) with multiple antennas to determine the respective hardware chain for each of the multiple antennas value. The invention also relates to a calibration method for determining hardware chaining values ​​in a base station BS with multiple antennas, wherein a respective hardware chaining value is obtained for each of the multiple antennas. The invention also relates to a corresponding terminal and base station for a wireless communication system. [0002] The present invention specifically relates to a multiple-input multiple-output (MIMO) system and corresponding terminals and base stations, as well as functions and methods performed in each base station and mobile terminal of this MIMO system. Background technique [0003] One of the main challenges in MIMO systems is to acquire accurate down...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0417H04B7/06H04B17/21
CPCH04B7/0417H04B7/061H04B7/0617H04B17/21H04B17/24H04B17/327H04L25/0202
Inventor 萨米尔·巴济许文
Owner HUAWEI TECH DUESSELDORF
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