Multi-PDSCH Channel Quality Estimation Using Quasi Co-Location

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Solution Overview

Problem

Existing wireless systems face inefficiencies in processing wireless signals due to the need to individually determine large-scale properties of each signal, which can be time-consuming and resource-intensive.

Innovation Solution

The implementation of quasi co-location techniques to determine that two or more antenna ports have similar large-scale properties, allowing signals from these ports to be processed collectively, thereby reducing the need for individual analysis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If individual large-scale properties are determined for each wireless signal, then measurement precision is improved, but processing time and device complexity increase

Engineering Contradiction:
Improvelarge-scale properties determination accuracyVSAvoidsignal processing time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent merges the determination of large-scale properties across multiple antenna ports by establishing quasi-co-location relationships. Instead of independently measuring each antenna port's large-scale properties (delay spread, Doppler shift, average gain), the system groups antenna ports that share similar propagation characteristics and applies a single set of parameters to the group, thereby reducing processing time while maintaining measurement accuracy.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent creates universal large-scale property parameters that can be applied across multiple antenna ports simultaneously. By defining quasi-co-location relationships, a single set of large-scale properties serves multiple antenna ports, making the measurement process more efficient without sacrificing the precision needed for accurate signal processing.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Measurement precision

If individual large-scale properties are determined for each wireless signal, then measurement precision is improved, but device complexity increases

Engineering Contradiction:
Improvelarge-scale properties determination accuracyVSAvoidprocessing complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent reduces device complexity by merging the processing of multiple antenna ports into unified quasi-co-location groups. The UE processes one set of large-scale properties for an entire group of antenna ports rather than maintaining separate processing chains for each port, significantly simplifying the device architecture while preserving measurement precision through proper group formation.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent segments antenna ports into distinct quasi-co-location groups based on their propagation characteristics. This segmentation allows the system to apply different processing approaches to different groups, optimizing the balance between measurement precision and device complexity by only performing detailed measurements where necessary while using simplified assumptions for other groups.

Inventive Principle:
Principle #1Segmentation

3Productivity

If quasi-co-location assumptions are made for multiple antenna ports, then processing speed is improved, but measurement precision may be compromised

Engineering Contradiction:
Improvesignal processing efficiencyVSAvoidlarge-scale properties accuracy
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The patent applies local quality by forming quasi-co-location groups based on specific local propagation characteristics. Each group is created with antenna ports that share similar large-scale properties in their local environment, allowing the system to make accurate assumptions locally within each group while maintaining overall processing efficiency across the entire system.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS20260020048A1Technologies in multi-pdsch transmission in a wireless network
Publication Date: 2026.01.15 APPLE INC
  • US20260020048A1 patent drawing
  • US20260020048A1 patent drawing
  • US20260020048A1 patent drawing

AI summary

In an example method, a user equipment (UE) device receives a slot of data from a base station (BS). The UE device determines a quality of a wireless channel between the BS to the UE device, including determining (i) a metric for a interval extending from a sequentially first symbol of the slot of data to a symbol immediately preceding the first subset of symbols, (ii) a metric for an interval extending from the sequentially first symbol of the slot of data to a sequentially last symbol of the first subset of symbols, (iii) a metric for an interval extending from the sequentially first symbol of the slot of data to a symbol immediately preceding the second subset of symbols, and/or (iv) a metric for an interval extending from the sequentially first symbol of the slot of data to a sequentially last symbol of the second subset of symbols.