User Terminal Power Allocation for Dual Connectivity Throughput
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Solution Overview
Problem
In dual connectivity scenarios of next-generation mobile communication systems, the independent control of uplink transmission power by multiple radio base stations leads to a decrease in uplink throughput and deterioration of communication quality.
Innovation Solution
A user terminal prioritizes uplink signal transmission power allocation, giving higher preference to signals transmitted through the master cell group over those transmitted through secondary cell groups, and implements power control strategies to manage transmission power effectively across multiple radio base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radio base stations independently control uplink transmission power in dual connectivity scenarios, then each base station can manage its own cell group autonomously, but uplink throughput decreases and communication quality deteriorates
Solution Approach 1:
The patent introduces a priority management mechanism as an intermediary layer between multiple base stations and the user terminal. This mediator assigns different priorities to uplink signals from different cell groups, enabling coordinated power control without requiring direct base station coordination, thus maintaining independent control while improving throughput
Solution Approach 2:
The patent changes the parameter of signal priority assignment to resolve the contradiction. By dynamically adjusting priority levels of uplink signals based on service requirements and channel conditions, the system can optimize power distribution across multiple base stations, improving overall uplink throughput while maintaining autonomous control capabilities
2Ease of operation
If uplink transmission power is distributed equally across multiple cell groups, then power allocation is simple, but communication quality deteriorates due to insufficient power for high-priority signals
Solution Approach 1:
The patent applies local quality by assigning different priority levels to different uplink signals based on their specific requirements. High-priority signals (e.g., control channels) receive preferential power allocation while low-priority signals (e.g., data channels) receive remaining power, ensuring communication quality without complex centralized control
Solution Approach 2:
The patent implements partial action by allocating power preferentially to essential high-priority signals first, then distributing remaining power to lower-priority signals. This ensures that critical communication functions maintain quality while simplifying the overall power allocation process
Data Source
AI summary
The present invention relates to reducing the decrease of uplink throughput in the event a user terminal connects with a plurality of radio base stations. In one aspect of the claimed invention, a user terminal includes a transmitter that performs transmission in a first cell group (CG) and a second CG, and a processor that, if the transmitter reports user terminal capability information indicating that the user terminal is capable of sharing transmission power dynamically and if transmission in the first CG overlaps in time with transmission in the second CG, scales transmission power of the second CG so that total transmission power of the transmission in the first CG and the transmission in the second CG does not exceed maximum allowable power.