Multi-Panel Uplink Power Allocation via SRS and DCI
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Solution Overview
Problem
Current uplink transmission technologies face challenges in efficiently managing power allocation across multiple transmission and reception points (TRPs) in user equipment (UE), leading to suboptimal performance in multi-panel transmission schemes due to limited power control and resource management.
Innovation Solution
The proposed method involves a UE that receives SRS configurations, DCI, and power headroom reports to implement a multi-panel transmission scheme, allowing flexible power allocation and reporting across multiple TRPs, enabling efficient power management and enhanced transmission capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple panels transmit simultaneously with respective maximum panel-specific power, then transmission reliability is improved, but power management complexity increases
Solution Approach 1:
The patent divides the uplink transmission into multiple independent panels, each with its own power control parameters. The network device can independently configure power headroom reporting and transmission power control for each panel, allowing separate management of power resources while maintaining overall system reliability through diversified transmission paths.
Solution Approach 2:
The patent implements dynamic power adjustment mechanisms where transmission power control parameters can be updated based on real-time channel conditions and power headroom reports. The network device dynamically adjusts power allocation across panels using DCI messages, enabling adaptive power management that responds to changing transmission conditions without requiring complex static configurations.
2Productivity
If power headroom reports are transmitted for each panel, then power allocation efficiency is improved, but uplink overhead increases
Solution Approach 1:
The patent combines power headroom reporting for multiple panels into a unified reporting mechanism. Instead of requiring separate reporting channels for each panel, the system integrates power headroom information from multiple panels into single or consolidated MAC CE messages, reducing the total number of uplink transmissions while maintaining the ability to track power status across all panels.
Solution Approach 2:
The patent creates a universal power headroom reporting framework that can handle both single-panel and multi-panel scenarios through the same mechanism. The power headroom report structure is designed to be flexible, accommodating different numbers of panels and transmission configurations without requiring separate reporting protocols, thereby reducing overhead while maintaining efficiency.
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 2C~2D
AI summary
Uplink, named UL, transmission and ULreception with multiple panels (panel#1, panel#2) related methods and user equipment, named UE (UE, UE1, UE2, 4400), are provided. The method includes: receiving a sound reference signal, named SRS, configuration; receiving a configuration for UL; receiving a downlink control information, named DCI; and transmitting one or more UL transmissions according to the DCI. The SRS configuration includes a first SRS resource set, a second SRS resource set, and a usage of the first and second SRS resource sets which is for one of codebook scheme and non-codebook scheme. The configuration for UL indicates a multi-panel transmission scheme. The DCI indicates that a first transmission configuration indicator, named TCI, state is associated with the first SRS resource set and a second TCI state is associated with the second SRS resource set for the multi-panel transmission scheme. The UL transmission includes one or more power headroom reports, named PHRs.