Multi-Antenna Uplink Power Control for Maximum UE Output
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
User equipment (UE) in wireless communication systems cannot perform uplink transmission with the maximum available output when using multiple antennas, necessitating a method to optimize and report the uplink rated output for effective multi-antenna transmission.
Innovation Solution
The UE identifies a maximum UE transmit power (PCMAX) based on the output powers of multiple power amplifiers (PAs) and transmits this information to the base station, allowing the base station to receive uplink signals based on this optimized power configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple antennas are used for uplink transmission, then transmission reliability and data rate are improved, but the UE cannot achieve maximum available output power
Solution Approach 1:
The patent introduces dynamic power allocation across multiple antennas based on channel conditions and interference levels. The UE adjusts transmit power per antenna dynamically, allowing the system to achieve near-maximum total output power while maintaining transmission reliability through adaptive power distribution rather than static equal power allocation.
Solution Approach 2:
The patent changes the power distribution parameters across multiple antennas, transitioning from equal power allocation to optimized power allocation based on channel state information, interference measurements, and quality of service requirements. This parameter optimization enables the system to achieve maximum available output power while maintaining or improving transmission reliability.
2Productivity
If transmit power is increased to maximize output, then communication performance is improved, but interference to other users and systems increases
Solution Approach 1:
The patent applies local quality optimization by allocating different power levels to different antennas based on their specific channel conditions and interference environments. Each antenna transmits with optimized power tailored to its local characteristics, achieving high communication performance in each spatial direction while minimizing overall interference through localized power control rather than uniform high power transmission.
Solution Approach 2:
The patent implements feedback mechanisms where the UE measures channel conditions, interference levels, and transmission quality, then adjusts power allocation accordingly. This closed-loop control enables the system to maintain high communication performance while dynamically reducing power when interference becomes excessive, balancing productivity and harmful effects through continuous adaptation.
3Power
If power amplifiers operate at maximum capacity, then output power is maximized, but power consumption and heat generation increase
Solution Approach 1:
The patent applies partial action by operating power amplifiers at optimized power levels rather than always at maximum capacity. By allocating power selectively based on actual transmission needs, channel conditions, and quality of service requirements, the system achieves sufficient output power for reliable communication while avoiding excessive power consumption and heat generation that would result from continuously operating amplifiers at maximum capacity.
Data Source
AI summary
The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate and coverage. A method performed by a user equipment (UE) in a communication system is provided. The method includes transmitting, to a base station, by the UE, UE capability information associated with an output power of a 3rd power amplifier (PA), identifying, by the UE, a maximum UE transmit power PCMAX based on the output power of the 3rd PA and output powers of a 1st PA and a 2nd PA, and transmitting, to the base station, by the UE, an uplink signal based on the identified PCMAX.