5G TBS Determination via Dynamic Resource Overhead Mapping
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Solution Overview
Problem
In 5G wireless communication systems, determining the optimal Transport Block Size (TBS) for data transmission is challenging due to varying resource overheads caused by different control channel resources, Channel State Information-Reference Signals, and Demodulation Reference Signals, which complicates the mapping between Modulation and Coding Scheme (MCS), Physical Resource Block (PRB) numbers, and resource overheads.
Innovation Solution
A data transmission method that determines transmission parameters including target Modulation and Coding Scheme (MCS), Physical Resource Block (PRB) number, and PRB resource overhead, allowing for the calculation of a target Transport Block Size (TBS) by referencing mapping relationships between PRB numbers and resource overhead groups, enabling flexible adjustment based on resource usage ratios and overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed resource overhead assumption is used for TBS determination, then the system complexity is reduced and ease of operation is improved, but the adaptability to different 5G system configurations and traffic types deteriorates
Solution Approach 1:
The patent introduces dynamic resource overhead information that varies according to different 5G system configurations, including control channel resources, CSI-RS, DMRS density, and antenna ports. This dynamic parameter allows the TBS determination process to adapt to changing system conditions while maintaining a structured approach through pre-defined resource overhead groups and mapping relationships.
Solution Approach 2:
The patent changes the parameter of resource overhead from a fixed value to a variable parameter that can take different values based on system configuration. By introducing resource overhead groups with different overhead values and their corresponding mapping relationships with PRB numbers and MCS, the system can adjust the resource overhead parameter to match different traffic types and channel conditions.
2Measurement precision
If multiple resource overhead factors are considered in 5G systems, then the accuracy of TBS determination is improved, but the device complexity and difficulty of detecting and measuring increases
Solution Approach 1:
The patent segments the resource overhead into distinct components including control channel resources, CSI-RS resources, DMRS resources, and antenna port configurations. By dividing the overall resource overhead into these segments and assigning specific overhead values to each segment, the system can accurately account for total resource overhead while maintaining manageable complexity through modular calculation.
Solution Approach 2:
The patent introduces resource overhead groups as an intermediary layer between the physical resource parameters and the TBS determination process. These groups act as mediators that pre-package combinations of resource overhead factors and their corresponding TBS values, simplifying the determination process while maintaining precision by selecting the appropriate group based on system configuration.
3Productivity
If resource overhead information is dynamically adjusted based on system configuration, then the productivity and data transmission efficiency is improved, but the loss of information about fixed mapping relationships increases
Solution Approach 1:
The patent performs preliminary action by pre-establishing mapping relationships between resource overhead groups, PRB numbers, MCS values, and corresponding TBS values. These pre-defined mappings are prepared in advance and stored in the system, allowing for rapid TBS determination during actual data transmission without requiring complex real-time calculations, thus maintaining both efficiency and information integrity.
Solution Approach 2:
The patent provides beforehand cushioning by creating multiple resource overhead groups with different overhead values and their corresponding TBS mappings in advance. This preparation ensures that when system configuration changes occur, the appropriate pre-calculated mappings are already available to cushion against the need for complex real-time reconfiguration, maintaining both adaptability and information reliability.
Data Source
AI summary
Disclosed in the present application are a data transmission method and a communication device. The method includes: obtaining transmission parameters for transmitting a transport block, wherein the transmission parameters comprise Modulation and Coding Scheme (MCS), a Physical Resource Block (PRB) number, and PRB resource overhead information; determining a Transport Block Size (TBS) for the transport block according to the transmission parameters; and transmitting the transport block or receiving the transport block according to the TBS; wherein the PRB resource overhead information is determined based on at least one of: Demodulation Reference Signal (DMRS), Channel State Information-Reference Signals (CSI-RS), and control channel information.