Aperiodic CSI Reporting Multiplexing with Dual SRS Resource Sets
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Solution Overview
Problem
Current wireless communication systems face challenges in ensuring reliable uplink communications and efficient channel state information (CSI) reporting, particularly in scenarios where single SRS resource sets are used, leading to reduced transmission reliability and efficiency.
Innovation Solution
The implementation of aperiodic CSI reporting techniques, where user equipment (UE) transmits multiple repetitions of uplink communications using different transmission beams and multiplexes CSI reports with both SRS resource sets, enhancing reliability by utilizing two SRS resource sets for PUSCH transmissions and allowing flexible multiplexing of CSI reports with either or both sets of repetitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single SRS resource set is used for PUSCH transmission, then device complexity is reduced, but transmission reliability deteriorates
Solution Approach 1:
The patent divides the SRS resource sets into two separate sets (first SRS resource set and second SRS resource set), each associated with different transmission beams. This segmentation allows the system to transmit multiple PUSCH repetitions using different beams, thereby improving uplink transmission reliability without significantly increasing device complexity through systematic resource organization.
Solution Approach 2:
The patent introduces dynamic beam selection and switching mechanisms where the UE can dynamically switch between different SRS resource sets and associated transmission beams based on channel conditions and base station feedback. This dynamic adaptation enhances transmission reliability by selecting optimal beams in real-time while maintaining manageable system complexity through standardized procedures.
2Reliability
If multiple PUSCH repetitions with different beams are transmitted, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent makes the SRS resource sets and associated beam management mechanisms universal and multi-functional, where the same framework supports both single-beam and multi-beam operations. The base station can configure one or two SRS resource sets depending on channel conditions, and the UE follows standardized procedures for beam switching and reporting, reducing the perceived complexity while maintaining reliability benefits.
Solution Approach 2:
The patent implements feedback mechanisms where the base station monitors the performance of different transmission beams and provides feedback to the UE for beam selection and adjustment. This feedback loop enables reliable transmission by continuously optimizing beam selection while keeping device complexity manageable through centralized control and standardized feedback processing procedures.
3Productivity
If CSI reports are multiplexed with both SRS resource sets, then CSI reporting efficiency is improved, but processing complexity increases
Solution Approach 1:
The patent merges the CSI reporting function with the existing PUSCH transmission framework by allowing CSI reports to be multiplexed with PUSCH repetitions associated with different SRS resource sets. This merging enables efficient CSI reporting by utilizing already-scheduled uplink resources, avoiding additional signaling overhead and reducing processing complexity through resource consolidation rather than creating separate reporting channels.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) may receive signaling scheduling a first set repetitions of a first uplink shared channel transmission associated with a first sounding reference signal (SRS) resource set and a second set of repetitions of a second uplink shared channel transmission associated with a second SRS resource set. The UE may receive a request to transmit one or more channel state information (CSI) reports and an indication that the CSI reports are to be multiplexed with one of the first set of repetitions or the second set of repetitions or with both of the first and second set of repetitions. The UE may then transmit the CSI reports in accordance with the indication by multiplexing the CSI reports with one or both of the first set of repetitions and the second set of repetitions.