Wireless Antenna Calibration Using Segmented Time-Frequency Resources

Solution Overview

Problem

Existing calibration methods for wireless communication devices with large numbers of antennas require significant computing resources, time, and frequency, making them inefficient.

Innovation Solution

A method and apparatus for calibrating wireless communication devices with multiple antennas by transmitting calibration signals and determining measurements within specific time-frequency resources, allowing for the determination of calibration parameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional calibration methods are used with large numbers of antennas, then calibration accuracy can be maintained, but computing resources, time and frequency resources are consumed excessively

Engineering Contradiction:

Improvecalibration accuracyVSAvoidcomputing resources consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The calibration process is segmented into two distinct phases: a first calibration phase using a subset of antennas with known calibration coefficients, and a second calibration phase using remaining antennas. This segmentation reduces the computational burden by avoiding the need to calibrate all antennas simultaneously with full precision requirements.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The method uses partial calibration by calibrating only a subset of antennas (first set) to obtain initial calibration coefficients, then using these partial results to enable the remaining antennas (second set) to function without full individual calibration. This partial action approach reduces resource consumption while maintaining sufficient calibration accuracy for the overall system.

Inventive Principle:

Principle #16Partial or excessive action

2Measurement precision

If traditional calibration methods are used with large numbers of antennas, then calibration accuracy can be maintained, but time consumption increases significantly

Engineering Contradiction:

Improvecalibration accuracyVSAvoidcalibration time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The calibration process is segmented into two distinct phases: a first calibration phase using a subset of antennas with known calibration coefficients, and a second calibration phase using remaining antennas. This segmentation reduces the computational burden by avoiding the need to calibrate all antennas simultaneously with full precision requirements.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The method performs preliminary calibration of a first set of antennas to obtain initial calibration coefficients before proceeding to calibrate the second set of antennas. This preliminary action establishes a foundation that accelerates the overall calibration process by reducing the complexity of subsequent calibration steps.

Inventive Principle:

Principle #10Preliminary action

3Measurement precision

If traditional calibration methods are used with large numbers of antennas, then calibration accuracy can be maintained, but frequency resources are consumed excessively

Engineering Contradiction:

Improvecalibration accuracyVSAvoidfrequency resources

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The calibration process is segmented into two distinct phases: a first calibration phase using a subset of antennas with known calibration coefficients, and a second calibration phase using remaining antennas. This segmentation reduces the computational burden by avoiding the need to calibrate all antennas simultaneously with full precision requirements.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The method uses partial calibration by calibrating only a subset of antennas (first set) to obtain initial calibration coefficients, then using these partial results to enable the remaining antennas (second set) to function without full individual calibration. This partial action approach reduces resource consumption while maintaining sufficient calibration accuracy for the overall system.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20250080246A1Method and apparatus for calibrating a wireless communication device

Publication Date: 2025.03.06 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

Methods and apparatus are provided. In an example aspect, a method of calibrating a wireless communication device having a plurality of antennas is provided. The method includes transmitting a first calibration signal from at least one first antenna of the plurality of antennas in a first time-frequency resource, determining first measurements of the first calibration signal in the first time-frequency resource from at least one second antenna of the plurality of antennas, wherein the at least one second antenna includes at least one of the at least one first antenna, and determining calibration parameters for the wireless communication device based on the first measurements.