Dual-Uplink EN-DC Power Sharing Under Timing and TX Power Limits
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Solution Overview
Problem
Existing dual-uplink EN-DC networks face challenges in determining optimal transmission powers for LTE and NR signals, leading to performance compromises due to equal power sharing or fixed power configurations, which do not account for dynamic power requirements and timing constraints.
Innovation Solution
A dynamic power sharing (DPS) mechanism that dynamically adjusts LTE and NR transmission powers based on real-time grants and network conditions, considering maximum power reduction (MPR) and additional MPR (A-MPR) to optimize dual-uplink performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If dynamic power sharing is implemented in dual connectivity, then energy efficiency is improved, but system complexity increases
Solution Approach 1:
The patent implements dynamic power sharing by allowing the UE to flexibly adjust the split ratio between first and second cells based on real-time channel conditions, QoS requirements, and battery status. This dynamic adaptation enables the system to optimize energy efficiency across varying operational conditions while managing complexity through automated decision-making algorithms.
Solution Approach 2:
The system changes key parameters including the power split ratio, active cell selection, and transmission mode (intra-band or inter-band) to optimize energy consumption. By dynamically modifying these parameters based on measured channel quality indicators and QoS metrics, the system achieves improved energy efficiency without requiring complete system redesign.
2Use of energy by moving object
If power split ratio is dynamically adjusted, then energy efficiency is improved, but control complexity increases
Solution Approach 1:
The patent employs feedback mechanisms where the UE continuously monitors channel quality indicators, QoS metrics, and battery status, then uses this information to adjust the power split ratio. The network receives reports from the UE and provides guidance on optimal power distribution, creating a closed-loop control system that automates complexity management while optimizing energy efficiency.
Solution Approach 2:
The UE autonomously performs measurements of channel conditions and QoS metrics, and automatically determines appropriate power split ratios based on predefined algorithms and policies. This self-service capability reduces the burden of complex manual control while maintaining optimal energy efficiency through automated decision-making.
3Adaptability or versatility
If intra-band and inter-band power sharing is supported, then network flexibility is improved, but implementation complexity increases
Solution Approach 1:
The patent creates a universal power sharing framework that handles both intra-band and inter-band scenarios through a unified control mechanism. The same basic algorithm and interface can manage different frequency band combinations, allowing the system to achieve network flexibility across multiple configurations without requiring separate specialized implementations for each scenario.
Solution Approach 2:
The system segments the power sharing decision process into distinct modules: channel quality measurement, QoS evaluation, power split ratio calculation, and transmission mode selection. This segmentation allows complex implementation requirements to be managed through modular components that can be independently developed, tested, and optimized for different intra-band and inter-band scenarios.
Data Source
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AI summary
Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for determining dynamic power sharing in a dual-uplink E-UTRA (Evolved Universal Terrestrial Radio Access) - new radio dual connectivity (EN-DC) network, and/or other new radio (NR) related networks. Various embodiments describe how to determine or configure respective transmission (TX) power levels for LTE and NR uplink signals in the dual-uplink EN-DC network. The NR uplink signal may or may not be transmitted based on a certain timeline threshold and/or power scaling threshold. Other embodiments may be described and claimed.