Multi-Slot UL-SCH Multiplexing for High-Resolution CSI Reporting
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Solution Overview
Problem
Existing wireless communication technologies face challenges in efficiently multiplexing uplink shared channel (UL-SCH) data with channel state information (CSI) reports for multiple transmission reception points, leading to increased power consumption, processing, and signaling resource usage, particularly in scenarios involving high-resolution CSI reporting for NR-Light UEs.
Innovation Solution
A method and apparatus for multiplexing UL-SCH data and CSI reports across multiple slots using a single DCI message, optimizing resource allocation and reducing computational complexity by determining a schedule that allocates resources efficiently across multiple transmission time intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-resolution CSI reporting for multiple transmission reception points is implemented, then measurement precision is improved, but use of energy by moving object increases
Solution Approach 1:
The patent segments the CSI reporting process across multiple slots, dividing the transmission of CSI parts into different time intervals. This allows the UE to spread out the processing and transmission tasks over time rather than concentrating them in a single slot, thereby reducing peak power consumption while maintaining high-resolution reporting capabilities
Solution Approach 2:
The patent implements periodic CSI reporting where different parts of the CSI are transmitted in alternating slots (e.g., CSI Part 1 in even slots, CSI Part 2 in odd slots). This periodic distribution of reporting tasks reduces the energy burden in any single slot while achieving complete high-resolution CSI feedback over the reporting period
2Measurement precision
If high-resolution CSI reporting for multiple transmission reception points is implemented, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent maintains continuous useful action by ensuring that CSI reporting occurs in every slot (alternating between Part 1 and Part 2), rather than having idle slots. This continuous utilization of transmission opportunities reduces the overall reporting time while maintaining high-resolution feedback through the distributed transmission of complete CSI information
3Ease of operation
If multiple DCI messages are used for scheduling CSI and UL-SCH, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent merges the scheduling function into a single DCI message that simultaneously schedules both CSI reporting and UL-SCH transmission. This consolidation reduces the number of DCI messages from multiple to one, thereby reducing processing complexity at the UE while maintaining scheduling flexibility through the unified message structure that includes both CSI request and UL grant information
Data Source
AI summary
Various aspects of the present disclosure generally relate to multi-slot transmission time interval based channel state information (CSI) and uplink shared channel (UL-SCH) multiplexing. In some aspects, a user equipment (UE) may receive a downlink control information (DCI) message and determine, based at least in part on the DCI message, a schedule for multiplexing UL-SCH data and one or more components of uplink control information (UCI) in a plurality of slots on a physical uplink shared channel (PUSCH). The components may include a CSI report for a plurality of transmission reception points. The UE may multiplex the UL-SCH data and the one or more components into the plurality of slots based at least in part on the schedule. Numerous other aspects are provided.