TBS Determination Using Reference Scaling for 5G Resource Flexibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for determining Transport Block Sizes (TBS) in wireless communication systems, particularly in 5G and NR systems, face challenges due to the variability of resource parameters such as the number of Physical Resource Blocks (PRBs) and time-domain resource units, which are not effectively addressed by the legacy TBS methods used in LTE systems.
Innovation Solution
A method where a terminal device determines a first TBS based on a preset resource parameter and a TBS mapping relationship, and then adjusts it according to a second resource parameter using numerical relationships or resource coefficients to ensure accurate data transmission, allowing for flexibility in resource allocation and expansion to larger transmission ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the legacy TBS determination method from LTE system is used, then the implementation complexity is low, but it cannot meet the requirement when resource parameters vary flexibly in 5G/NR systems
Solution Approach 1:
The patent segments the TBS determination process into multiple steps: first determining a reference TBS based on reference resource parameters, then calculating a scaling factor based on the ratio between actual and reference resource parameters, and finally obtaining the actual TBS by scaling. This segmentation allows the system to handle flexible resource parameters while reusing the legacy TBS determination framework, thus improving adaptability without proportionally increasing complexity.
Solution Approach 2:
The patent introduces dynamic parameter changes by allowing resource parameters (such as number of PRBs, time-domain resource units, and transmission layers) to vary flexibly. The TBS determination method adapts to these parameter changes by calculating scaling factors based on the ratios of actual parameters to reference parameters, enabling the system to accommodate 5G/NR flexibility requirements while maintaining a systematic approach.
2Adaptability or versatility
If multiple resource parameters (PRBs, time-domain units, transmission layers) are allowed to vary flexibly, then the system adaptability improves, but the TBS determination accuracy deteriorates under legacy methods
Solution Approach 1:
The patent implements a feedback mechanism where the determination of actual TBS depends on both the reference TBS (determined through legacy methods) and the scaling factor (calculated based on actual resource parameters). This feedback loop ensures that TBS determination accuracy is maintained by continuously adjusting the TBS value according to the actual resource allocation, while still allowing flexible variation of resource parameters for improved adaptability.
Solution Approach 2:
The patent performs preliminary determination of reference TBS based on reference resource parameters before the actual transmission. This preliminary action establishes a baseline TBS value that can then be scaled according to actual resource parameters, ensuring that the TBS determination process is both systematic and adaptable to flexible resource allocation scenarios.
3Adaptability or versatility
If the legacy TBS method is used, then the implementation complexity remains low, but the forward compatibility with larger resource ranges is limited
Solution Approach 1:
The patent creates a universal TBS determination method that can handle both legacy LTE scenarios and new 5G/NR scenarios with flexible resource parameters. By combining the legacy TBS determination approach with a scaling factor mechanism, the system achieves multi-functionality: it maintains compatibility with existing LTE methods while extending support to 5G/NR flexible resource allocation, thus improving forward compatibility without requiring complete redesign.
Solution Approach 2:
The patent introduces dynamics into the TBS determination process by making the scaling factor adjustable based on actual resource parameters. This dynamic adjustment allows the system to adapt to different resource allocation scenarios (LTE, 5G, various numerologies) while maintaining a consistent underlying framework, thereby improving forward compatibility with minimal increase in implementation complexity.
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
Disclosed are a method for transmitting data, a terminal device and a network device. The method comprises: a terminal device determining an MCS level used to transmit a current target transmission block; the terminal device, according to the MCS level and a TBS mapping relationship when a pre-set first resource parameter is met, determining a first TBS corresponding to the MCS level, wherein the TBS mapping relationship comprises a mapping relationship between the MCS level and the TBS; the terminal device, according to a second resource parameter used to transmit the target transmission block and the first TBS, determining a second TBS; and the terminal device, according to the second TBS, sending the target transmission block to a network device, or receiving the target transmission block sent according to the second TBS of the network device. In this way, the terminal device can effectively obtain TBS information in the case that a value range of the resource parameter used to transmit data is relatively large.