Multi-Panel Uplink Transmission with Dynamic Panel Selection
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Solution Overview
Problem
Existing wireless communication systems face challenges in optimizing transmission and reception with multiple panels, particularly in determining antenna ports, precoding, and power allocation for simultaneous multi-panel operations, which can lead to inefficiencies and suboptimal performance.
Innovation Solution
A wireless transmit/receive unit (WTRU) is configured to dynamically determine subsets of antenna panels for simultaneous multi-panel (SMP) transmission, select antenna ports, and apply power scaling factors, using indicators and precoding matrixes based on operation mode, to enhance transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple panels are used for simultaneous transmission, then transmission efficiency and throughput are improved, but device complexity and configuration difficulty increase
Solution Approach 1:
The patent implements dynamic panel selection where the WTRU determines subsets of antenna panels for SMP transmission based on real-time conditions. The processor dynamically selects antenna ports for SMP and non-SMP modes, and dynamically determines power scaling factors, allowing the system to adapt panel configuration to current operational requirements rather than using fixed configurations
Solution Approach 2:
The patent changes operational parameters by introducing power scaling factors that can be dynamically adjusted for different panel combinations. The system modifies transmission parameters such as power allocation, panel selection, and mode switching (SMP vs non-SMP) based on downlink transmissions and scheduling information, enabling optimized performance across varying conditions
2Productivity
If dynamic panel selection is implemented, then transmission optimization is improved, but processing requirements and control complexity increase
Solution Approach 1:
The patent employs feedback mechanisms where the WTRU determines panel selection and transmission parameters based on received downlink transmissions. The processor uses scheduling information from downlink control information to determine which panels to activate for uplink transmission, creating a closed-loop system that optimizes based on actual network conditions and scheduling decisions
Solution Approach 2:
The patent performs preliminary configuration by pre-establishing sets of antenna panels and transmission modes. The WTRU is configured with capability information indicating support for SMP transmission, and the system pre-determines power scaling factors and panel subsets based on downlink transmissions before actual uplink transmission occurs, reducing real-time processing burden
3Use of energy by moving object
If power scaling factors are applied to multiple panels, then power allocation efficiency is improved, but control parameter complexity increases
Solution Approach 1:
The patent applies power scaling factors selectively rather than uniformly to all panels. The processor determines specific power scaling factors for selected panel subsets based on transmission mode and scheduling information, applying power control only where needed for optimal performance rather than managing power for all possible panels, thus reducing control complexity
Data Source
AI summary
A wireless transmit/receive unit (WTRU) may receive configuration information that indicates a first SRS resource set and a second SRS resource set. The WTRU may receive first DCI comprising a first UL grant. The first DCI may include a first indication to transmit with multiple panels simultaneously. The first DCI may include a second indication associating each of the multiple panels with a respective one of the first or second SRS resource sets for the first UL grant. The second indication may indicate that the first SRS resource set is to be used for first transmission using the first panel and the second SRS resource set is to be used for a second transmission using the second panel, or vice versa. The WTRU may simultaneously transmit the first transmission via the first panel and the second transmission via the second panel, in accordance with the first and second indications.