Wireless Resource Configuration for Full-Duplex UL/DL Timing

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Solution Overview

Problem

Existing semi-static or dynamic TDD UL/DL configurations in 5G wireless communication systems face limitations such as transmission time delay and interference, while FDD schemes are inefficient in frequency resource utilization for downlink and uplink directions, particularly with the emergence of services requiring low latency and dynamically changing traffic.

Innovation Solution

Implementing a method and device for resource configuration in wireless communication systems that allow for half duplex (HD) or full duplex (FD) operations by using transmission configuration indicator (TCI) and sounding reference signal resource indicator (SRI) to manage transmission and reception within specific time durations, enabling flexible resource allocation and reducing interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If semi-static or dynamic TDD UL/DL configuration is used, then transmission time delay is reduced, but interference between operators increases

Engineering Contradiction:

Improvetransmission time delayVSAvoidinterference between operators

Core Design Contradiction:

Loss of timeVSObject-affected harmful factors

Solution Approach 1:

The patent segments the duplex operation into separate time durations: a first time duration for half-duplex operation and a second time duration for full-duplex operation. This temporal segmentation allows the system to switch between HD and FD modes, reducing operator interference during FD operation while maintaining low latency through flexible time resource allocation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic switching between half-duplex and full-duplex operations based on traffic conditions and service requirements. The base station dynamically configures TCI states and SRI for different time durations, enabling the system to adapt between HD and FD modes to optimize both latency performance and interference management.

Inventive Principle:

Principle #15Dynamics

2Productivity

If FDD scheme is used, then frequency resource utilization for DL/UL direction is improved, but efficient frequency resource utilization is limited

Engineering Contradiction:

Improvefrequency resource utilizationVSAvoidefficient frequency resource utilization

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent makes the frequency resource universal by enabling both half-duplex and full-duplex operations on the same frequency. The system can operate in HD mode for traditional FDD-like behavior or switch to FD mode for enhanced resource utilization, making the frequency resource adaptable to different service requirements and traffic conditions.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent changes the operational parameter of the frequency resource by switching between HD and FD modes. During the first time duration, the frequency operates in HD mode with separate DL/UL resources, while during the second time duration, it operates in FD mode allowing simultaneous DL and UL transmissions, thereby optimizing resource utilization based on real-time conditions.

Inventive Principle:

Principle #35Parameter changes

3Loss of time

If full duplex operation is introduced within a single carrier, then low delay time and efficient resource utilization are achieved, but device complexity increases

Engineering Contradiction:

Improvedelay timeVSAvoiddevice complexity

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The patent introduces TCI state and SRI as intermediary mechanisms to manage full-duplex operation. These intermediaries carry configuration information that enables the UE to perform FD operation without requiring complex processing. The base station signals the appropriate TCI state or SRI for each time duration, simplifying the UE's decision-making process while enabling low-latency FD communication.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Productivity

If TCI state or SRI information is provided for full duplex time duration, then transmission and reception efficiency is improved, but control information overhead increases

Engineering Contradiction:

Improvetransmission and reception efficiencyVSAvoidcontrol information overhead

Core Design Contradiction:

ProductivityVSQuantity of substance

Solution Approach 1:

The patent makes the TCI state and SRI information universal by using the same configuration mechanisms for both HD and FD operations. The base station can signal TCI state or SRI through existing DCI formats and RRC configurations, allowing the same control structures to serve multiple purposes without requiring entirely new signaling protocols, thus limiting overhead increase.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20260106705A1Device and method for performing resource configuration in wireless communication system

Publication Date: 2026.04.16 LG ELECTRONICS INC

AI summary

A method of operating a user equipment (UE) in a wireless communication system is disclosed. The method includes receiving, from a base station, control information of a downlink (DL) signal or an uplink (UL) signal within a specific time duration in which half duplex (HD) or full duplex (FD) is possible, the control information including information on a transmission configuration indicator (TCI) state or a sounding reference signal resource indicator (SRI) that is available in a time duration for the FD; and performs a transmission and a reception in an indicated time duration among the time duration for the FD using a TCI state or an SRI corresponding to the indicated time duration based on the indication information.