Network-Controlled Repeater Beam Indication with Unified DCI Fields

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing methods for network-controlled repeaters (NCRs) in wireless communication systems do not efficiently manage dynamic beam indication without increasing signaling overhead, which is crucial for flexible operation and efficient resource utilization.

Innovation Solution

The NCR receives downlink control information (DCI) with equal numbers of beam and time resource indication fields, configured by a higher layer signal, allowing flexible dynamic beam indication while minimizing control information bit size and facilitating easy DCI detection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If dynamic beam indication is implemented for NCR-Fwd, then beam flexibility is improved, but signaling overhead increases

Engineering Contradiction:

Improvebeam indication flexibilityVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent combines beam indication information and time resource indication information into a single DCI message. By merging these two types of control information into one transmission, the system achieves flexible dynamic beam indication while avoiding the need for separate signaling channels, thereby reducing overall signaling overhead.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The DCI message is designed to serve multiple functions simultaneously: it provides both beam indication and time resource indication to the NCR-Fwd. This multi-functional approach allows a single control message to manage multiple aspects of NCR operation, reducing the total number of signaling messages required.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Loss of information

If DCI bit size is reduced, then control information efficiency is improved, but detection difficulty increases

Engineering Contradiction:

Improvecontrol information bit sizeVSAvoidDCI detection difficulty

Core Design Contradiction:

Loss of informationVSDifficulty of detecting and measuring

Solution Approach 1:

The NCR-MT is configured in advance with the maximum size of the DCI message through higher layer signaling. This preliminary configuration allows the NCR-Fwd to allocate appropriate buffer space and detection resources before receiving the actual DCI, enabling efficient processing of compact control messages without increasing detection complexity.

Inventive Principle:

Principle #10Preliminary action

3Productivity

If NCR operation is controlled dynamically, then resource utilization is improved, but control complexity increases

Engineering Contradiction:

Improveresource utilization efficiencyVSAvoidcontrol information complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

By combining beam indication and time resource indication into a single DCI message, the system achieves dynamic control of NCR operations without proportionally increasing control complexity. The merged message structure allows coordinated control of multiple parameters while maintaining manageable signaling overhead.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250240085A1Operation method for device in wireless communication system, and device using same

Publication Date: 2025.07.24 LG ELECTRONICS INC

AI summary

Provided are a method and a device for operating an NCR in a wireless communication system. The NCR comprises an NCR-MT and an NCR-Fwd. The NCR receives DCI from a base station through the NCR-MT, and operates in an access link through the NCR-Fwd on the basis of the DCI. The DCI includes beam indication fields used to indicate beam information and time resource indication fields used to indicate time resources, wherein the number of beam indication fields and the number of time resource indication fields are the same, and the number of time resource indication fields is set by a higher layer signal.