Wireless Power Control for Component Carrier Priority
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Solution Overview
Problem
Wireless communication systems face challenges in efficiently controlling transmission power when transmitting multiple signals, particularly when the sum of transmission powers exceeds the maximum allowed power, leading to potential interference and reduced performance.
Innovation Solution
A method and device for controlling transmission power in wireless communication systems by prioritizing channels and adjusting powers dynamically, using Transmit Power Control (TPC) commands to ensure that the total transmission power does not exceed the maximum limit, while maintaining effective communication through techniques like power allocation and attenuation coefficients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple signals are transmitted simultaneously with high power, then communication reliability is improved, but transmission power overload occurs when the sum exceeds maximum allowed power
Solution Approach 1:
The patent dynamically adjusts transmission power parameters based on signal priority and current power conditions. When the sum of transmission powers exceeds maximum allowed power, the system changes power parameters by applying attenuation coefficients to lower-priority signals, thereby resolving the power overload while maintaining communication reliability for high-priority signals
Solution Approach 2:
The patent applies different power allocation strategies to different signals based on their priority levels. High-priority signals receive full or enhanced power allocation while low-priority signals receive reduced power through attenuation coefficients, creating a differentiated power distribution that resolves the contradiction between maintaining reliability and avoiding power overload
2Reliability
If transmission power is increased to maintain communication quality, then signal quality is improved, but interference to other signals increases
Solution Approach 1:
The patent applies differentiated power allocation where high-priority signals receive sufficient power for quality maintenance while low-priority signals receive attenuated power through coefficients, thereby maintaining signal quality for critical communications while reducing interference generated by non-critical signals
3Reliability
If power allocation is optimized for critical signals, then communication reliability is improved, but power management complexity increases
Solution Approach 1:
The patent manages power allocation complexity by systematically changing power parameters through pre-defined attenuation coefficients based on signal priority. This parameter-based approach provides a structured method for optimizing critical signal reliability without requiring complex real-time decision-making algorithms
Data Source
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AI summary
A method for a communication apparatus controlling a transmission power in a wireless communication system supporting a plurality of component carriers is proposed, which comprises: controlling transmission powers for one or more channels per each component carrier; when a PUSCH transmission on a first component carrier and a SRS transmission on a second component carrier are configured in a time interval, checking whether a total transmission power of the PUSCH transmission on the first component carrier and the SRS transmission on the second component carrier exceeds a maximum transmission power configured for the communication apparatus; and if the total transmission power of the PUSCH transmission on the first component carrier and the SRS transmission on the second component carrier exceeds the maximum transmission power configured for the communication apparatus, prioritizing transmission power allocation for the PUSCH transmission than transmission power allocation for the SRS transmission.