TBoMS LDPC Rate Matching Across Multiple Slots
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Solution Overview
Problem
Current communication networks face challenges in efficiently transmitting Transport Blocks over Multiple Slots (TBoMS) due to complexities in rate matching and redundancy version management, which affect spectral efficiency and coverage enhancement.
Innovation Solution
The method involves encoding with Low Density Parity Check (LDPC) codes and performing rate matching on each code block of TBoMS, determining the output sequence length based on specific formulas, and managing redundancy versions to optimize TBoMS transmission across multiple slots, while also handling collisions and UCI multiplexing effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If rate matching is performed per slot for TBoMS transmission, then spectral efficiency is improved, but device complexity increases due to multiple rate matching operations
Solution Approach 1:
The patent segments the TBoMS transmission into multiple slots, with each slot undergoing independent rate matching operations. This segmentation allows the transmission to be divided into manageable units that can be processed separately, improving spectral efficiency through optimized resource allocation per slot while the systematic approach to segmentation helps manage the complexity through standardized procedures.
Solution Approach 2:
The patent performs preliminary rate matching operations on each code block before final transmission across multiple slots. By pre-processing the data with rate matching in each slot, the system optimizes the transmission efficiency beforehand, reducing the need for complex real-time adjustments during transmission and thereby managing overall system complexity.
2Reliability
If redundancy versions are managed for each code block in TBoMS, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies different redundancy versions to different code blocks within the TBoMS transmission. Each code block can be assigned a specific redundancy version tailored to its requirements, improving overall transmission reliability by optimizing error protection locally for each block while maintaining manageable complexity through localized rather than global management.
Solution Approach 2:
The system changes the redundancy version parameter for different code blocks based on transmission conditions and requirements. By dynamically adjusting the redundancy version parameter for each code block, the system improves reliability adaptively while the parameter-based approach keeps complexity manageable through systematic parameter management rather than complex structural changes.
Data Source
AI summary
Various embodiments of the present disclosure provide a method for TBoMS transmission. The method which may be performed by a terminal device comprises encoding with low density parity check (LDPC) base graph on each code block (CB) of a Transport Block over Multiple Slots (TboMS), wherein the TBoMS comprises multiple slots; and performing rate matching on the LDPC code for each of the multiple slots of the TBoMS, wherein a time unit of the rate matching is per slot in the TBoMS, and wherein the TBoMS comprises one or more CBs.