PUSCH Transmission Reliability via Dynamic DCI Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current communications systems face low reliability in PUSCH transmission due to unchanged control information used for multiple transmissions, which limits the effectiveness of scheduling Physical Uplink Shared Channel (PUSCH) transmissions.
Innovation Solution
A method where a terminal receives downlink control information (DCI) to schedule multiple times of PUSCH transmission, determines a target identifier for each PUSCH, and sends the PUSCH based on target control information from the DCI, ensuring that the control information differs for at least twice in the scheduled transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the same control information is used for multiple PUSCH transmissions, then the device complexity is reduced, but the reliability of PUSCH transmission deteriorates
Solution Approach 1:
The control information in DCI is segmented into multiple groups, where each group contains control information for a specific PUSCH transmission. The DCI includes multiple indication fields (first indication field, second indication field, etc.) that correspond to different transmission instances, allowing the terminal to select appropriate control information for each PUSCH transmission based on the target identifier
Solution Approach 2:
The control information becomes dynamic by introducing variation across multiple transmissions. The terminal determines a target identifier for each PUSCH transmission and selects control information from different groups based on this identifier, making the control information adaptive to each transmission instance rather than static and identical across all transmissions
2Reliability
If different control information is used for multiple PUSCH transmissions, then the reliability of PUSCH transmission is improved, but the device complexity increases
Solution Approach 1:
The network device performs preliminary action by pre-configuring multiple groups of control information in the DCI before the PUSCH transmissions occur. Each group is prepared in advance with specific control parameters, and the terminal simply needs to select the appropriate group based on the target identifier, reducing the complexity of real-time control information generation
Solution Approach 2:
The DCI contains multiple copies of control information in different groups, each copy tailored for specific transmission instances. Instead of generating different control information from scratch for each transmission, the system uses pre-prepared copies that the terminal can selectively apply, reducing the computational complexity while maintaining reliability
Data Source
AI summary
A physical uplink shared channel (PUSCH) transmission method, a terminal, and a network device are provided. The method includes: receiving downlink control information (DCI), where the DCI is used to schedule M times of PUSCH transmission, and M is an integer greater than 1; determining a target identifier associated with each PUSCH; and sending the PUSCH based on target control information that is in the DCI and that corresponds to the target identifier; where target control information corresponding to PUSCHs in at least twice in the M times of PUSCH transmission is different.