Uplink Resource Mapping for SBFD Frequency Hopping Control

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Solution Overview

Problem

Existing technologies face challenges in efficiently managing uplink channel resource allocations in Sub-Band Full Duplex (SBFD) operations, particularly with issues such as improper frequency hopping, increased processing complexity, and inadequate control over frequency domain resources, especially for physical uplink shared channels (PUSCH) and control channels (PUCCH).

Innovation Solution

A wireless terminal and base station system that determines whether a PUSCH or PUCCH is mapped to SBFD or non-SBFD regions, applying different frequency domain offsets based on the region, and utilizing resource allocation modes to optimize frequency hopping and resource management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If frequency hopping is applied in SBFD operations, then frequency diversity and interference avoidance are improved, but processing complexity and resource allocation errors increase

Engineering Contradiction:

Improvefrequency hopping accuracyVSAvoidprocessing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies different frequency domain offsets for different regions (SBFD region vs. non-SBFD region). The first frequency domain offset is applied when the PUSCH is mapped to the SBFD region, while the second frequency domain offset is applied when mapped to the non-SBFD region. This local differentiation ensures appropriate frequency hopping behavior for each region while avoiding processing errors.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The frequency domain resources are segmented into SBFD region and non-SBFD region. The patent determines whether a PUSCH is mapped on SBFD region or non-SBFD region and applies different frequency domain offsets accordingly. This segmentation allows independent optimization of frequency hopping parameters for each region.

Inventive Principle:

Principle #1Segmentation

2Productivity

If resource allocation modes are optimized for SBFD, then uplink channel efficiency is improved, but control over frequency domain resources becomes more complex

Engineering Contradiction:

Improveuplink channel efficiencyVSAvoidfrequency domain control complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent changes the frequency domain offset parameter based on the mapping region. By introducing different frequency domain offsets for SBFD and non-SBFD regions, the system optimizes resource allocation efficiency while maintaining manageable control complexity through clear parameter differentiation.

Inventive Principle:

Principle #35Parameter changes

3Manufacturing precision

If frequency domain offsets are applied for PUSCH mapping, then frequency resource allocation precision is improved, but system configuration complexity increases

Engineering Contradiction:

Improvefrequency resource allocation precisionVSAvoidsystem configuration complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

Different frequency domain offsets are applied locally based on the PUSCH mapping region. The first frequency domain offset applies to SBFD region mappings while the second frequency domain offset applies to non-SBFD region mappings, ensuring precise frequency resource allocation for each region with clear configuration rules.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250386333A1User equipments and methods for determining time-frequency resource set for enhanced duplex operation

Publication Date: 2025.12.18 SHARP KK

AI summary

A wireless terminal of a cellular telecommunication system comprises processor circuitry and transmitter circuitry. The processor circuitry is configured to select between a first resource allocation mode and a second resource allocation mode for determining a radio resource(s) to use for an uplink channel. The transmitter circuitry is configured to transmit the uplink channel using the radio resource(s) of a selected resource allocation mode.