Packet-Level Rate Matching Using Redundancy-Version Code Block Selection

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Solution Overview

Problem

Existing communication systems face challenges in efficiently managing packet level rate matching, particularly in wireless transmit/receive units, due to the complexity of determining optimal combinations of coded code blocks for transmission.

Innovation Solution

A method and apparatus in a wireless transmit/receive unit (WTRU) that determines a set of candidate outer coded code blocks based on a packet level redundancy version, selecting a number of these blocks from a generated packet level mother code for transmission, ensuring linear independence and optimizing the transmission process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If packet level rate matching is implemented to optimize transmission efficiency, then communication performance is improved, but the complexity of determining optimal combinations of coded code blocks increases

Engineering Contradiction:

Improvetransmission efficiencyVSAvoidcomplexity of determining optimal combinations

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the transport block into code blocks (CBs), which are further divided into inner coded CBs and outer coded CBs. This segmentation allows the system to manage complexity by processing smaller units independently while achieving packet level rate matching through the combination of these segmented blocks.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent pre-determines the set of outer coded CBs to be transmitted based on the packet level redundancy version (RV) before actual transmission occurs. This preliminary determination of candidate outer coded CBs simplifies the transmission process by eliminating the need for real-time optimization calculations during data transmission.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If outer coded code blocks are generated from packet level mother code, then linear independence is ensured, but the number of candidate blocks to select from increases

Engineering Contradiction:

Improvelinear independenceVSAvoidnumber of candidate blocks

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent uses packet level redundancy versions (RVs) as a parameter to control and limit the number of candidate outer coded CBs. By changing the RV parameter, the system determines which specific outer coded CBs to transmit, effectively managing the quantity of candidates while maintaining linear independence through the structured code generation process.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20260025228A1Methods, architectures, apparatuses and systems for packet level rate matching

Publication Date: 2026.01.22 INTERDIGITAL PATENT HOLDINGS INC

AI summary

Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for packet level rate matching. A wireless transmit/receive unit, WTRU, determines a set of candidate outer coded code blocks, CBs, based on a determined packet level redundancy version, RV, for a transmission, wherein each outer coded CB is a different linearly independent combination of a set of source CBs, a source CB being a segment of a transport block, selects a determined number of outer coded CBs to transmit, the outer coded CBs selected from the set of candidate outer coded CBs resulting from a generated packet level mother code, and transmits the selected outer coded CBs.