Beam Pattern Measurement Window Indication for Wireless Communication

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Solution Overview

Problem

Current wireless communication systems face challenges in measuring and feedbacking channel quality using beam forming schemes, especially at higher frequencies where propagation path loss increases, reducing service coverage and lacking adaptive mechanisms.

Innovation Solution

The implementation of a reference signal transmitting and receiving apparatus that transmits and receives beam pattern measurement window indication information, allowing for adaptive channel quality measurement and feedback by determining optimal beam patterns and measurement windows in a wireless communication system supporting a beam forming scheme.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If beam forming scheme is used to increase propagation distance and reduce interference, then service coverage and signal quality are improved, but the ability to measure and feedback channel quality adaptively deteriorates due to lack of appropriate reference signal measurement mechanisms

Engineering Contradiction:
Improveservice coverageVSAvoidchannel quality measurement adaptability
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies dynamics by making the reference signal measurement window configurable and adaptable. The base station can dynamically adjust the measurement window size and position based on channel conditions, beam forming parameters, and traffic requirements. This allows the system to adapt the channel quality measurement process to match the dynamic beam forming operation, resolving the contradiction between maintaining reliable service coverage and enabling adaptive measurement capability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes key parameters of the reference signal measurement process, including the measurement window size, timing, and frequency resources. By adjusting these parameters based on beam forming configuration and channel conditions, the system can optimize both the reliability of service coverage and the adaptability of channel quality measurement. The measurement parameters are modified to align with beam forming time-varying characteristics.

Inventive Principle:
Principle #35Parameter changes

2Measurement precision

If reference signal measurement is performed in beam forming system, then channel quality can be measured, but measurement accuracy deteriorates due to time-varying beam patterns and inappropriate measurement window configuration

Engineering Contradiction:
Improvechannel quality measurement accuracyVSAvoidmeasurement window configuration complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-configuring reference signal measurement windows before actual channel quality measurement. The base station determines appropriate measurement window parameters in advance based on beam forming configuration, signal bandwidth, and expected channel conditions. This preliminary configuration ensures that when measurement occurs, the window is properly positioned and sized to capture stable beam patterns, improving measurement accuracy without requiring complex real-time adjustments.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback mechanisms where measurement results are fed back to the base station, which then adjusts future measurement window configurations. The base station uses feedback information about channel quality, beam stability, and measurement accuracy to optimize measurement window parameters iteratively. This closed-loop approach improves measurement precision while managing configuration complexity through learned patterns and adaptive tuning.

Inventive Principle:
Principle #23Feedback

3Measurement precision

If measurement window size is increased to capture sufficient reference signals for accurate measurement, then measurement accuracy is improved, but time delay and loss of time increase

Engineering Contradiction:
Improvechannel quality measurement accuracyVSAvoidmeasurement time delay
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent applies partial action by using just sufficient measurement window size to achieve required measurement accuracy rather than maximizing window size. The system determines the minimum necessary window duration and reference signal count needed for acceptable channel quality estimation. This avoids the excessive time delay that would result from using unnecessarily large measurement windows, while still achieving adequate measurement precision for beam forming operations.

Inventive Principle:
Principle #16Partial or excessive action

4Power

If beam forming is applied to increase antenna gain in high frequency bands, then propagation distance is extended, but service coverage decreases due to increased propagation path loss

Engineering Contradiction:
Improveantenna gainVSAvoidservice coverage
Core Design Contradiction:
PowerVSReliability

Solution Approach 1:

The patent applies dimensionality change by transitioning from frequency-domain beam forming to time-domain beam pattern measurement and selection. Instead of relying solely on high-frequency beam forming gain, the system measures channel quality across multiple time instances and beam patterns, then selects optimal configurations. This temporal dimension addition allows the system to compensate for high-frequency path loss through adaptive beam selection rather than purely relying on fixed high-frequency beam forming gain.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP2992619B1Apparatus and method for transmitting/receiving reference signal in wireless communication system supporting beam forming scheme
Publication Date: 2020.06.03 SAMSUNG ELECTRONICS CO LTD
  • EP2992619B1 patent drawingFigure 1
  • EP2992619B1 patent drawingFigure 2
  • EP2992619B1 patent drawingFigure 3~4

AI summary

A method for transmitting by a reference signal transmitting apparatus a reference signal in a wireless communication system supporting a beam forming scheme is provided. The method includes transmitting beam pattern measurement window indication information including information related to at least two beam pattern measurement windows which each of reference signal receiving apparatuses will use to the reference signal receiving apparatuses; and transmitting reference signals based on beam patterns which the reference signal transmitting apparatus supports during a preset number of time units.