Transport Block Size Determination Using Adaptive Overhead
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Solution Overview
Problem
Accurately determining a transport block size (TBS) in communications systems is challenging due to varying quantities of available resource elements (REs) across different time-frequency resources, especially in dynamic scheduling scenarios, which affects transmission performance.
Innovation Solution
A method and apparatus that determine a transport block size by obtaining a target overhead value based on a target time-frequency resource and multiple overhead values, where each overhead value corresponds to a time-frequency resource unit, and using this value to calculate the transport block size, improving accuracy and transmission performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed overhead value is used for TBS determination, then the calculation process is simple, but the accuracy of TBS determination deteriorates in dynamic time-frequency resource scheduling scenarios
Solution Approach 1:
The patent applies dynamics by making the overhead value adaptive rather than fixed. The network device determines a target overhead value from multiple pre-configured overhead values based on the actual time-frequency resource allocation, allowing the system to dynamically adjust to different scheduling scenarios while maintaining accurate TBS determination
Solution Approach 2:
The patent changes the parameter of overhead value from a static fixed value to a selectable value from multiple options. By configuring multiple overhead values corresponding to different time-frequency resource scenarios and selecting the appropriate one based on actual conditions, the system achieves both accuracy and adaptability
2Measurement precision
If multiple overhead values are configured for different time-frequency resource units, then the accuracy of TBS determination is improved, but the system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple overhead values in advance for different time-frequency resource scenarios. This preparation work is done beforehand, so when actual scheduling occurs, the network device only needs to select from the pre-configured options, reducing real-time complexity while maintaining high accuracy
Solution Approach 2:
The patent segments the overhead value configuration into multiple discrete options, each corresponding to specific time-frequency resource units. This segmentation allows the system to handle complexity in a structured way, where each segment can be independently selected based on the actual scheduling scenario
Data Source
AI summary
Embodiments of this application provide a method and apparatus for determining a transport block size. The method includes: obtaining a target overhead value based on a target time-frequency resource and one or more of at least two overhead values, where the target time-frequency resource is used for uplink data transmission or downlink data transmission and includes one or more time-frequency resource units, and each overhead value is corresponding to at least one time-frequency resource unit; and determining a transport block size based on the target overhead value. It can be learned that, according to the method and apparatus for determining a transport block size provided in the embodiments of this application, a corresponding target overhead value may be determined for each of different target time-frequency resources. This is not only applicable to a scenario in which a dynamic time-frequency resource is scheduled, but also improves accuracy of determining the transport block size. Therefore, transmission performance is improved.