Terminal Device Power Control for Multi-Panel Wireless Transmission
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Solution Overview
Problem
In wireless communication systems, terminals with different hardware capabilities face challenges in performing reasonable power control for uplink multi-panel transmission, as existing technologies do not effectively address how to share or distribute transmit power between different antenna panels, affecting transmission performance.
Innovation Solution
A method where a terminal device receives downlink signaling for scheduling a physical uplink shared channel (PUSCH) and determines transmit power for transmission layers using a target power control method, either by determining power separately or jointly for layers associated with different SRI or TCI states, and a network device configures the appropriate power control method based on terminal capability information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate power control is used for transmission layers on different panels, then transmission performance is improved, but device complexity increases
Solution Approach 1:
The patent segments power control into separate control processes for different antenna panels. Each panel's transmission layers are controlled independently with separate power control parameters, allowing optimized power distribution across panels while maintaining manageable complexity through modular control architecture.
Solution Approach 2:
The patent implements dynamic power control where the terminal device can flexibly adjust power distribution between panels based on real-time transmission conditions, capability information, and network configuration. This dynamic adaptation enables performance optimization without requiring overly complex static control mechanisms.
2Device complexity
If joint power control is used for transmission layers on different panels, then device complexity is reduced, but transmission performance deteriorates
Solution Approach 1:
The patent divides the power control function into separate control entities for each antenna panel, maintaining independent power control parameters and control processes. This segmentation ensures that each panel can be optimized independently, preventing performance deterioration while keeping the overall system manageable through standardized control interfaces.
Solution Approach 2:
The patent introduces a new dimension of control by adding panel-specific power control parameters and capability information exchange between terminal and network. This additional control dimension enables fine-grained power management across multiple panels without significantly increasing overall system complexity.
3Ease of operation
If terminals with different capabilities use the same power control method, then ease of operation is improved, but adaptability deteriorates
Solution Approach 1:
The patent implements dynamic power control methods that adapt to terminal capabilities in real-time. The terminal device determines its own capability information regarding power sharing between panels and flexibly adjusts power control parameters accordingly, enabling both ease of operation through automated adaptation and versatility by supporting different capability levels.
Solution Approach 2:
The patent changes power control parameters based on terminal capability information. Different terminal capabilities (power sharing ability, number of panels, hardware configurations) result in different power control parameter settings, allowing the system to maintain ease of operation while achieving high adaptability to diverse terminal types.
4Adaptability or versatility
If capability information exchange is implemented between terminal and network, then adaptability is improved, but loss of information increases
Solution Approach 1:
The patent extracts only the essential capability information needed for power control (power sharing ability, panel configuration) and exchanges this specific subset between terminal and network. This selective information exchange improves adaptability by providing necessary capability data while minimizing information overhead by excluding unnecessary details.
Solution Approach 2:
The patent implements partial capability information exchange, providing just enough capability data for effective power control without complete terminal capability disclosure. This partial action approach achieves sufficient adaptability for power control purposes while reducing information loss through minimized data exchange overhead.
Data Source
AI summary
A method of wireless communication includes: receiving by a terminal device, a downlink signaling for scheduling a PUSCH; determining by the terminal device, transmit power of the transmission layers associated with the plurality of SRI information or the plurality of TCI states by using a target power control method; where the target power control method is a first power control method or a second power control method, the first power control method is to determine the transmit power separately for the transmission layers associated with different SRI information or TCI states, and the second power control method is to determine the transmit power jointly for the transmission layers associated with different SRI information or TCI states; and transmitting by the terminal device, the plurality of transmission layers according to determined transmit power of the plurality of transmission layers.