Terminal Full Duplex Resource Configuration

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Solution Overview

Problem

In next-generation mobile communication systems, the lack of sufficient study on full duplex (FD) communication methods in the New Radio (NR) specification leads to potential deterioration in system performance due to increased delay and reduced coverage performance in ultra-dense and high-traffic environments.

Innovation Solution

A terminal is designed with a control section that determines a resource where both uplink (UL) and downlink (DL) signal resources can be configured within the same time resource in one physical resource block, and a transmitting/receiving section that performs initial access using specific UL and DL signals in this determined resource.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If full duplex (FD) communication is implemented in NR specification, then resource utilization efficiency is improved, but system performance deteriorates due to increased delay and reduced coverage performance

Engineering Contradiction:
Improveresource utilization efficiencyVSAvoidsystem performance
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent segments the full duplex communication resources into separate uplink and downlink resource configurations within the same time resource. The control section determines specific resource allocations for UL and DL signals independently, allowing selective application of FD communication while maintaining TDD compatibility, thus improving resource utilization without compromising system performance

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic resource configuration where the control section adaptively determines UL and DL signal resources based on current system conditions. The resource allocation can be flexibly adjusted between FD and TDD modes, enabling the system to optimize performance dynamically rather than being constrained to a fixed configuration

Inventive Principle:
Principle #15Dynamics

2Quantity of substance

If full duplex communication is used in ultra-dense and high-traffic environments, then capacity is increased, but delay increases and coverage performance deteriorates

Engineering Contradiction:
Improvecommunication capacityVSAvoiddelay
Core Design Contradiction:
Quantity of substanceVSLoss of time

Solution Approach 1:

The patent applies local quality by configuring UL and DL resources with different properties within the same time resource. Specific resource blocks are allocated with optimized parameters for their respective directions, allowing high-capacity FD communication in areas where it benefits performance while maintaining reliable coverage in sensitive areas

Inventive Principle:
Principle #3Local quality

3Productivity

If full duplex communication is implemented without sufficient specification study, then resource utilization efficiency is improved, but overhead increases

Engineering Contradiction:
Improveresource utilization efficiencyVSAvoidoverhead
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent creates a universal resource configuration framework that supports both FD and TDD communication modes through the same control mechanism. The control section can determine resources for UL and DL signals in the same time resource while maintaining compatibility with existing NR specifications, reducing the need for additional overhead signaling

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

Data Source

PatentUS20250133542A1Terminal, radio communication method, and base station
Publication Date: 2025.04.24 NTT DOCOMO INC
  • US20250133542A1 patent drawing
  • US20250133542A1 patent drawing
  • US20250133542A1 patent drawing

AI summary

A terminal according to one aspect of the present disclosure includes: a control section configured to determine a resource in which an uplink (UL) signal resource and a downlink (DL) signal resource are configurable in the same time resource in one physical resource block; and a transmitting/receiving section configured to perform, in the resource to be determined, at least one of reception of a specific DL signal used for initial access and transmission of a specific UL signal used for initial access. According to one aspect of the present disclosure, overhead can be reduced and resource utilization efficiency can be increased.