SBFD Resource Allocation Switching via RRC and DCI Signaling

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Solution Overview

Problem

Current technologies fail to provide adequate solutions for enabling user equipment (UEs) and base stations to switch between sub-band full duplex (SBFD) and non-SBFD communication schemes, due to differences in resource allocation and scheduling between these schemes.

Innovation Solution

The techniques described provide solutions for enabling UEs and base stations to switch between SBFD and non-SBFD communication schemes by using configuration information, such as RRC, DCI, and L1 signaling, to adjust resource allocation and scheduling, ensuring seamless transitions and efficient communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If resource allocation is optimized for SBFD operations, then spectral efficiency and resource utilization improve, but compatibility and seamless switching with non-SBFD operations deteriorate

Engineering Contradiction:

Improvespectral efficiencyVSAvoidswitching compatibility

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The system dynamically adjusts resource allocation parameters based on operational mode. Configuration information including RRC, DCI, and L1 signaling is modified according to whether SBFD or non-SBFD operations are active, enabling seamless switching while maintaining optimized resource utilization for the current mode

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes key resource allocation parameters such as physical resource block (PRB) assignments, reference signal configurations, and scheduling parameters based on the operational mode. By adjusting these parameters dynamically, the system achieves optimized spectral efficiency in SBFD mode while maintaining compatibility with non-SBFD operations

Inventive Principle:

Principle #35Parameter changes

2Productivity

If configuration information is extensively modified for SBFD operations, then communication efficiency improves, but system complexity increases

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidconfiguration management

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The system performs preliminary configuration of resource allocation parameters before switching between SBFD and non-SBFD operations. Configuration information including RRC, DCI, and L1 signaling is prepared in advance, reducing the complexity of real-time switching while maintaining high communication efficiency

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The configuration information structure is designed to serve multiple functions - it works for both SBFD and non-SBFD operations with minimal modification. This universal configuration approach reduces system complexity by avoiding the need for entirely separate configuration systems for different operational modes

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250184104A1Systems, methods, and devices for resource allocation for SBFD operations

Publication Date: 2025.06.05 APPLE INC

AI summary

The techniques described herein may include solutions for enabling a user equipment (UE) to switch between sub-band full duplex (SBFD) communications and non-SBFD communications within the same time domain of a resource allocation. Discussed herein include solutions for sounding reference signals (SRS), physical uplink (UL) shared channels (PUSCH), and type 1 and type 2 configured grants (CG). Radio resource control (RRC) information, downlink (DL) control information (DCI), layer 1 (L1) indicators, and other types of control information may be used.