Transport Block Size Determination in 5G Wireless Systems
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Solution Overview
Problem
Current 5G communication systems face challenges in effectively determining the size of transport blocks, code blocks, and performing rate matching, which affects the transmission of data and control information, particularly in wireless communication systems.
Innovation Solution
A method and apparatus that involve a user equipment (UE) transmitting capability information to a base station to determine the transport block size (TBS) based on the product of allocated resource elements, code rate, modulation order, and the number of allocated layers, with the maximum TBS considered over multiple slots, and limiting values such as the number of resource elements, code rate, or modulation order.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transport block size is determined based on the product of allocated resource elements, code rate, modulation order, and number of allocated layers, then the data transmission capacity is improved, but the complexity of determining and configuring the TBS increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the TBS based on multiple variables including allocated resource elements (NRE), code rate (R), modulation order (Qm), and number of allocated layers (v). The formula TBS = NRE × R × Qm × v demonstrates how changing these parameters allows flexible adaptation of transmission capacity to channel conditions and resource availability, resolving the contradiction between transmission capacity and configuration complexity through systematic parameter management
Solution Approach 2:
The patent implements dynamics by making the TBS determination adaptive rather than static. The system dynamically calculates TBS based on real-time channel conditions, resource allocation, and modulation schemes. This dynamic approach allows the system to optimize data transmission capacity while managing complexity through algorithmic determination rather than fixed configurations
2Productivity
If the maximum TBS is considered over multiple slots, then the resource utilization efficiency is improved, but the difficulty of detecting and measuring the TBS increases
Solution Approach 1:
The patent applies preliminary action by determining the maximum TBS over multiple slots in advance, before actual data transmission. This allows the system to pre-calculate optimal resource allocation and TBS values based on predicted channel conditions and resource availability, improving resource utilization efficiency while simplifying real-time measurement and detection during actual transmission
3Reliability
If values such as number of resource elements, code rate, or modulation order are limited, then the reliability of communication is improved, but the data transmission capacity decreases
Solution Approach 1:
The patent applies parameter changes by establishing specific constraints on key parameters: limiting NRE to maximum values based on frequency and subcarrier spacing, constraining code rate R within reliable ranges, and capping modulation order Qm. These parameter limitations ensure communication reliability by preventing overly aggressive configurations, while the system maintains adequate transmission capacity through optimized parameter combinations and multi-slot aggregation
Data Source
AI summary
A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes transmitting, to a base station, capability information of the UE, and receiving configuration information associated with a transport block size (TBS). The TBS is determined based on a value of NRE·R·Qm·v. The NRE corresponds to a number of allocated resource elements, the R corresponds to a code rate, and the Qm corresponds to a modulation order, and the v corresponds to a number of allocated layers. A maximum value of the TBS is considered for transport block over multiple slots (TBoMS), and the maximum value of the TBS is determined by limiting at least one of a value of the NRE, the R, the Qm, or the v.