Transport Block Split for Interference Avoidance in 5G

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Solution Overview

Problem

Current wireless communication systems, particularly in 5G NR, face challenges with interference and resource allocation efficiency due to overlapping downlink and uplink resources in subband full duplex (SBFD) communications, leading to suboptimal channel conditions for transport blocks (TBs) when they share the same frequency-domain resources.

Innovation Solution

Implementing a TB split strategy where one TB is mapped to resources adjacent to an uplink subband or guard band, and another TB is mapped to resources separated from the uplink subband, allowing for distinct communication parameters and resource allocations to optimize channel conditions based on interference and interference patterns.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If downlink and uplink resources overlap in subband full duplex communications, then resource allocation flexibility is improved, but interference increases and channel conditions deteriorate

Engineering Contradiction:

Improveresource allocation flexibilityVSAvoidinterference

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent segments the transport block into multiple codeblock groups, where each codeblock group can be independently mapped to different frequency-domain resources. This segmentation allows the system to allocate resources flexibly while avoiding interference by placing different codeblock groups in non-overlapping frequency regions, thus resolving the contradiction between resource allocation flexibility and interference avoidance.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by configuring different communication parameters (such as modulation and coding schemes) for different codeblock groups based on their specific channel conditions. Each codeblock group can be optimized independently for its local frequency region, allowing the system to maintain high resource allocation flexibility while adapting to local interference conditions and maximizing overall performance.

Inventive Principle:

Principle #3Local quality

2Productivity

If transport blocks share the same frequency-domain resources, then resource utilization efficiency is improved, but reliability decreases due to suboptimal channel conditions

Engineering Contradiction:

Improveresource utilization efficiencyVSAvoidtransmission reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent divides the transport block into multiple codeblock groups that can be mapped to different frequency-domain resources. This segmentation enables the system to maintain high resource utilization by efficiently packing codeblock groups into available resources while simultaneously improving reliability by placing codeblock groups in frequency regions with optimal channel conditions, avoiding persistent interference.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes communication parameters (such as modulation order and coding rate) for different codeblock groups based on their specific channel conditions. By adapting these parameters locally, the system achieves both high resource utilization efficiency and improved transmission reliability, as each codeblock group is transmitted with parameters optimized for its specific frequency region's channel quality.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If uniform communication parameters are used for all transport blocks, then system complexity is reduced, but performance deteriorates due to varying channel conditions

Engineering Contradiction:

Improvesystem complexityVSAvoidcommunication performance

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The patent segments the transport block into multiple codeblock groups, each of which can be configured with independent communication parameters. This segmentation enables the system to optimize performance by adapting parameters to local channel conditions while maintaining manageable complexity through a structured approach to parameter configuration, avoiding the need for completely independent optimization of each transport block.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20240334398A1Multiple payload regions

Publication Date: 2024.10.03 QUALCOMM INC

AI summary

Aspects of the disclosure are directed to an apparatus and method of communication between a user equipment (UE) and a network node using multiple transport blocks that are split across disjointed or overlapping resources. In one examples, the UE may receive downlink scheduling information comprising an indication of a first set of downlink resources and a second set of downlink resources within a slot, wherein the first set of downlink resources and the second set of downlink resources correspond to a first downlink subband, and wherein the first set of downlink resources include at least a first frequency-domain resource outside of a frequency-domain of the second set of downlink resources. In some examples the UE may receive a first downlink signal via the first set of downlink resources, and a second downlink signal via the second set of downlink resources.