TDRA Row Configuration for Multi-PDSCH Scheduling and HARQ-ACK Clarity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing wireless communication systems face challenges in efficiently scheduling multiple PDSCHs and managing HARQ-ACK feedback, particularly when TCI states are updated without PDSCH scheduling, leading to ambiguity in HARQ-ACK codebook configurations.
Innovation Solution
The proposed solution involves receiving and transmitting configuration information related to time domain resource allocation (TDRA) rows, including a plurality of start and length indicator values (SLIVs) for physical downlink shared channels, and transmitting and receiving first downlink control information (DCI) without including downlink assignment information, and indicating a transmission configuration indicator (TCI) state, which includes transmitting and receiving HARQ-ACK corresponding to (multi) DCI for scheduling a plurality of PDSCHs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple PDSCHs are scheduled through M-DCI, then scheduling efficiency is improved, but ambiguity in HARQ-ACK codebook configuration occurs when TCI state is updated without PDSCH scheduling
Solution Approach 1:
The patent segments the TDRA configuration into multiple rows, where each row corresponds to a specific number of SLIVs. When M-DCI schedules multiple PDSCHs, the UE can identify the appropriate TDRA row based on the number of scheduled PDSCHs, thereby resolving the ambiguity in HARQ-ACK codebook configuration while maintaining high scheduling efficiency.
Solution Approach 2:
The patent pre-configures multiple TDRA rows with different numbers of SLIVs before M-DCI scheduling occurs. This preliminary configuration allows the UE to quickly determine the correct HARQ-ACK codebook structure based on the indicated TDRA row, eliminating the need for complex post-scheduling analysis and resolving the information ambiguity.
2Adaptability or versatility
If a TDRA row includes multiple SLIVs, then resource allocation flexibility is improved, but difficulty in determining the correct TDRA row increases when TCI state is updated
Solution Approach 1:
The patent divides the TDRA configuration into multiple distinct rows, with each row containing a specific number of SLIVs. This segmentation allows the UE to easily identify the correct row by matching the number of scheduled PDSCHs with the appropriate row, thereby reducing the difficulty of determining the correct TDRA row while maintaining resource allocation flexibility.
Solution Approach 2:
The patent assigns different local qualities to different TDRA rows by configuring each row with a specific number of SLIVs. This local differentiation enables the UE to quickly identify the correct row based on the scheduling requirements, reducing the difficulty of detection while preserving overall system flexibility.
Data Source
AI summary
A method and apparatus for performing communication in a wireless communication system are disclosed. In an embodiment of the present disclosure, a method for performing communication by a user equipment (UE) may include receiving, from a base station, configuration information related to at least one time domain resource allocation (TDRA) row including a plurality of start and length indicator values (SLIVs) for a physical downlink shared channel (PDSCH) and receiving, from the base station, first downlink control information (DCI), and the first DCI includes transmission configuration indicator (TCI) state indication information and does not include downlink (DL) assignment information, and a number of SLIVs in a specific TDRA row indicated by the first DCI among the at least one TDRA row is 1.