5G UE Power Control via Multi-Panel Threshold Sharing
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Solution Overview
Problem
Current wireless cellular networks face challenges in efficiently managing power control across diverse frequency bands and spectrum types, particularly in 5G and beyond networks, which affects spectral efficiency and user equipment (UE) performance.
Innovation Solution
Implementing advanced power control mechanisms that include open-loop and closed-loop power control methods, using path loss measurements and power sharing techniques across multiple antenna panels, to dynamically adjust transmission power based on reference signal received power (RSRP) and beamforming configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If advanced power control mechanisms are implemented to optimize transmission power, then spectral efficiency is improved, but device complexity increases
Solution Approach 1:
The power control mechanism is segmented into multiple independent components: open-loop power control for baseline power setting, closed-loop power control for dynamic adjustment, path loss measurement for channel estimation, and power sharing for multi-panel coordination. Each component handles a specific aspect of power control, making the overall complex system manageable and modular.
Solution Approach 2:
The power control mechanism serves multiple functions simultaneously: it optimizes transmission power for spectral efficiency, manages interference through power sharing across antenna panels, adapts to different frequency bands, and coordinates between multiple antenna panels. This multi-functionality consolidates what would otherwise require separate systems into a unified power control framework.
2Productivity
If power control is optimized for high carrier frequency bands, then spectral efficiency improves, but implementation difficulty increases
Solution Approach 1:
The mechanism adapts power control parameters dynamically based on frequency band characteristics. Different power control parameters are applied for high carrier frequency bands compared to lower bands, allowing optimization for mmWave frequencies while maintaining compatibility with existing implementations. The system adjusts path loss measurements, power sharing ratios, and control loop parameters according to the operating frequency.
3Reliability
If multiple antenna panels are used for power sharing, then UE performance improves, but device complexity increases
Solution Approach 1:
Multiple antenna panels are merged into a unified power control system that shares power resources across panels. Instead of independently controlling each panel, the system combines them into a coordinated structure where power is dynamically allocated based on channel conditions, beamforming requirements, and interference considerations. This merging reduces the complexity of managing individual panels while improving overall UE performance.
Solution Approach 2:
A feedback mechanism is implemented that continuously monitors the performance of multiple antenna panels and adjusts power distribution accordingly. The system uses measurements from different panels to determine optimal power sharing strategies, automatically adapting to changing channel conditions. This feedback loop enables the system to manage multiple panels intelligently without requiring manual configuration or complex fixed control logic.
Data Source
AI summary
A computer-readable storage medium stores instructions to configure a UE for a power control procedure in a 5G NR and beyond wireless network. The instructions cause the UE to perform operations including decoding RRC signaling received from a base station. The RRC signaling includes one or more open-loop power control parameters. A reference signal received power (RSRP) is determined. The RSRP is associated with a reference signal received from the base station using a receive beam. A path loss associated with the receive beam is determined based on the RSRP. A transmission (Tx) power is determined using the one or more open-loop power control parameters and the path loss. The Tx power is adjusted based on a power threshold shared between at least two antenna panels of a plurality of antenna panels. Uplink data is encoded for transmission to the base station according to the adjusted Tx power.