Repeater Power Control for Linear-Region Signal Amplification
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in power management for network-controlled repeaters, particularly in regions where increasing base station output power does not correspond to an equal increase in the repeater's transmission power, leading to power-limited or flat regions, which affect synchronization signal strength and energy efficiency.
Innovation Solution
Implementing a method to determine the operating region of network-controlled repeaters as either power-limited or linear, and adjusting the downlink output power to operate within the linear region, ensuring consistent energy per resource element for synchronization signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If base station output power is increased to improve repeater transmission power, then signal strength is improved, but in power-limited regions the repeater cannot achieve proportional power increase leading to inefficiency
Solution Approach 1:
The system dynamically determines whether the repeater is operating in a power-limited or linear region and adjusts the base station's downlink output power accordingly. This dynamic adaptation allows the system to optimize power efficiency by keeping the repeater in the linear region where power conversion is most efficient, rather than operating in the power-limited region where increasing base station power yields diminishing returns at the repeater.
Solution Approach 2:
The invention changes the operating parameters of the base station by adjusting its downlink output power based on the determined operating region of the repeater. By modifying this parameter, the system ensures the repeater operates in the linear region, thereby improving overall power efficiency while maintaining adequate signal strength.
2Reliability
If base station output power is increased to maintain synchronization signal strength, then signal quality is improved, but energy consumption increases in power-limited regions
Solution Approach 1:
The system dynamically adjusts the base station's downlink output power based on real-time determination of the repeater's operating region. This dynamic control ensures synchronization signals maintain adequate strength while avoiding excessive energy consumption by preventing operation in the power-limited region where energy efficiency deteriorates.
Solution Approach 2:
The system implements feedback by determining the repeater's operating region and using this information to adjust the base station's transmission power. This closed-loop control ensures that synchronization signal strength is maintained at appropriate levels without wasting energy in power-limited conditions, as the base station power is optimized based on the repeater's actual operating state.
3Power
If repeater operates in power-limited region, then maximum output power is achieved, but energy efficiency and signal consistency deteriorate
Solution Approach 1:
The system dynamically monitors and determines the repeater's operating region, then adjusts the base station's downlink power to maintain operation in the linear region. This dynamic adjustment prevents the repeater from entering the power-limited region where energy efficiency is poor, ensuring consistent energy efficiency while maintaining adequate output power through optimized base station transmission.
Data Source
AI summary
A method for wireless communication at a network node and related apparatus are provided. In the method, the network node transmits, to a wireless device, a downlink (DL) signal for amplification and transmission of an amplified DL signal to a user equipment; determine an operating region of the wireless device for amplifying the DL signal. The operating region is one of a power-limited region in which a DL output power of the wireless device reaches a maximum DL output power, and a linear region, in which the DL output power of the wireless device is less than the maximum DL output power. The network node further adjusts the DL output power of the wireless device to cause the wireless device to operate at the linear region when amplifying the DL signal. The method improves the energy efficiency of the wireless device when transmitting the signals.