Terminal QCL Scheduling for Same-Time-Domain Signal Reception

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Solution Overview

Problem

Existing radio communication systems lack sufficient study on scheduling restrictions for simultaneous reception and transmission of signals with different quasi-co-location (QCL) types, leading to poor communication quality and lower throughput.

Innovation Solution

A terminal and base station are designed to schedule and transmit/receive multiple signals of different specific QCL types in the same time domain, allowing for proper transmission and reception of signals/channels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple signals of different QCL types are scheduled in the same time domain in frequency range higher than first frequency range, then communication quality and throughput are improved, but scheduling restriction management becomes complex and insufficient study leads to poor communication quality

Engineering Contradiction:

ImprovethroughputVSAvoidscheduling restriction management

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by introducing specific QCL type parameters (QCL-TypeA, QCL-TypeB, QCL-TypeC, QCL-TypeD) to classify and manage different signal characteristics. By assigning distinct QCL type parameters to different signals, the system can handle multiple signals in the same time domain with differentiated quasi-co-location properties, thereby improving throughput while maintaining manageable scheduling complexity through standardized parameterization.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If multiple signals of different QCL types are transmitted/received in the same time domain, then communication quality is improved, but insufficient scheduling restriction study results in poor communication quality

Engineering Contradiction:

Improvecommunication qualityVSAvoidscheduling restriction study

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing signals into distinct QCL type categories (TypeA, TypeB, TypeC, TypeD), each with specific scheduling rules. This segmentation allows the system to manage multiple signals in the same time domain by treating each QCL type as a separate manageable entity with defined restrictions, thereby improving communication quality through proper signal differentiation while reducing overall scheduling complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses parameter changes by defining specific QCL type parameters that characterize different signal properties. By changing and assigning specific QCL type parameters to different signals, the system enables proper scheduling restriction management for each signal type, ensuring reliable communication quality while maintaining systematic control over the complexity of managing multiple simultaneous signals.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20260039435A1Terminal, radio communication method, and base station

Publication Date: 2026.02.05 NTT DOCOMO INC

AI summary

A terminal according to one aspect of the present disclosure includes a control section that assumes that a plurality of signals of different specific quasi-co-location (QCL) types are scheduled or configured in a same time domain in a frequency range higher than a first frequency range, and a transmitting/receiving section that transmits or receives the plurality of signals in the same time domain. According to one aspect of the present disclosure, signals/channels can be properly transmitted/received in the same time domain.