SBFD Rate-Match Patterns for Uplink Interference Reduction

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Solution Overview

Problem

There is a need for improved rate matching patterns in subband full duplex (SBFD) communication systems to enhance wireless communication efficiency and reduce interference in 5G New Radio (NR) technology.

Innovation Solution

The implementation of rate-match patterns for subband full duplex (SBFD) resources, allowing for efficient signaling and transmission through processors configured to obtain and output rate-match patterns using subband full duplex resources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If rate matching patterns are implemented for subband full duplex resources, then wireless communication efficiency is enhanced and interference is reduced, but device complexity increases due to additional processing requirements

Engineering Contradiction:

Improvewireless communication efficiencyVSAvoidprocessing complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent divides the communication resources into subbands, with specific subbands allocated for uplink and downlink transmissions. By segmenting the frequency spectrum into subband full duplex resources, the system can simultaneously perform uplink and downlink communications in different subbands, thereby enhancing communication efficiency while managing interference through structured resource division.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies rate matching patterns in advance to mute specific resources before transmission occurs. By pre-configuring which resources should be muted based on the subband full duplex resource allocation, the system prevents interference from occurring in the first place, rather than trying to mitigate it after the fact. This preliminary action reduces the need for complex real-time interference cancellation processing.

Inventive Principle:

Principle #10Preliminary action

2Object-affected harmful factors

If rate match patterns are used to mute resources, then interference from simultaneous uplink signaling is reduced, but signaling overhead increases due to additional control information

Engineering Contradiction:

Improveinterference from uplink signalingVSAvoidsignaling overhead

Core Design Contradiction:

Object-affected harmful factorsVSLoss of information

Solution Approach 1:

The patent extracts and mutes specific resources that would cause interference in subband full duplex operations. By identifying and removing (muting) the problematic uplink signaling resources in the rate matching pattern, the system eliminates the source of interference without requiring complex real-time cancellation, thereby reducing harmful interference effects.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent converts the potential harm of uplink signaling interference into a benefit by using the rate matching pattern to deliberately mute those interfering resources. What would normally be harmful interference becomes a controlled, predictable pattern that can be accounted for in resource allocation, transforming the interference problem into a manageable resource management feature.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS20260046061A1Rate-matching patterns

Publication Date: 2026.02.12 QUALCOMM INC

AI summary

Aspects of the disclosure are directed to methods and techniques for wireless communications, and in particular to applying a rate-matching pattern to an uplink communication. In certain aspects, a wireless node may obtain an indication of a rate-match pattern. In certain aspects, the wireless node may output, via subband full duplex (SBFD) resources, signaling for transmission according to the rate-match pattern.