CSI Reporting Slot Offset Selection for Aperiodic PUSCH Timing
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Solution Overview
Problem
Current mobile communication systems face challenges in efficiently managing high-speed data services due to resource shortages and the need for advanced techniques to support increased data traffic, user connections, low latency, and energy efficiency, particularly in determining optimal times for Channel State Information (CSI) reporting.
Innovation Solution
A method for determining a slot offset associated with CSI reporting by receiving RRC signaling and DCI, forming lists of time offsets, and transmitting CSI reports based on indexed list entries, allowing for aperiodic CSI reporting with index values of 00, 01, 10, or 11, to optimize CSI transmission timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple reporting settings are configured for CSI reporting, then the system can support diverse reporting requirements and improve adaptability, but determining the slot offset becomes more complex and time-consuming
Solution Approach 1:
The patent segments the slot offset determination process by dividing it into multiple candidate values (first value, second value, third value) stored in separate lists. Each list corresponds to different reporting settings, allowing the system to handle diverse reporting requirements while maintaining a structured, manageable approach to selecting the appropriate offset.
Solution Approach 2:
The patent applies preliminary action by pre-configuring multiple candidate slot offset values in lists before actual CSI reporting occurs. The UE receives RRC signaling that configures these reporting settings and candidate values in advance, so when DCI triggers a CSI report, the UE can quickly retrieve and select from the pre-prepared candidate values using the indicated index, avoiding complex real-time calculations.
2Measurement precision
If the UE determines slot offset from multiple candidate values, then the timing accuracy for CSI reporting is improved, but the processing time and computational complexity increase
Solution Approach 1:
The patent resolves this contradiction by pre-configuring multiple candidate slot offset values through RRC signaling before CSI reporting is needed. When DCI triggers a CSI report with an index value, the UE simply retrieves the corresponding pre-configured value from the appropriate list, achieving accurate timing selection without complex real-time processing.
Solution Approach 2:
The patent uses copying by maintaining multiple lists of candidate slot offset values, where each list is a copy of possible timing options for different reporting settings. The UE copies the relevant candidate value from the appropriate list based on the DCI index, avoiding the need to recalculate or complexly determine the slot offset at reporting time.
3Productivity
If aperiodic CSI reporting is implemented with DCI triggering, then the reporting flexibility and resource efficiency are improved, but the coordination between multiple reporting settings becomes more difficult
Solution Approach 1:
The patent applies universality by designing a unified mechanism that handles multiple reporting settings through a common DCI triggering approach. The same DCI format and index-based selection method works across different reporting settings, allowing the system to maintain resource efficiency while coordinating multiple configurations through a single versatile procedure.
Solution Approach 2:
The patent uses the DCI message as an intermediary that coordinates between multiple reporting settings. The DCI contains an index value that mediates the selection process, translating the need for flexible aperiodic reporting across multiple settings into a simple retrieval operation from pre-configured lists, thereby simplifying the coordination complexity.
Data Source
AI summary
The present invention provides a method of reporting, by a UE, CSI in a wireless communication system, the method comprising: receiving, from a base station, a RRC signaling that comprises a plurality of reporting settings, wherein each reporting setting comprises a corresponding list of first values representing time offsets for transmitting a CSI report, forming a plurality of lists of first values; receiving, from the base station, DCI triggering the CSI report, wherein the DCI comprises an index value related to a time at which to transmit the CSI report on a PUSCH; determining, based on the DCI, a plurality of list entries; determining a second value that is largest among the plurality of list entries; and transmitting, to the base station, the CSI report on the PUSCH based on the second value.