Network-Controlled Repeater Power Control Using Dual Reference Signals
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Solution Overview
Problem
Existing network-controlled repeaters lack efficient power control mechanisms to optimize the quality of individual links between network devices and terminal devices, leading to suboptimal signal amplification and noise amplification.
Innovation Solution
Implementing methods to estimate the quality of two links using reference signals with different power levels, allowing network devices to determine and configure optimal transmit powers for both the network-controlled repeater and terminal devices based on the estimated link qualities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional RF repeaters are used without network control, then device complexity is reduced, but power control efficiency and signal quality optimization are insufficient
Solution Approach 1:
The patent implements a feedback mechanism where the repeater measures downlink reference signal received power (RSRP) and reports it to the network node, which then adjusts the repeater's amplification gain accordingly. This closed-loop feedback enables dynamic power control to optimize signal quality while managing noise amplification, resolving the contradiction between simple device operation and efficient power control.
Solution Approach 2:
The patent changes the operational parameter of the repeater by introducing network-controlled gain adjustment based on measured RSRP values. The repeater transitions from fixed amplification to variable gain operation, allowing optimization of the amplification factor according to actual link conditions, thereby improving power control efficiency without excessive complexity.
2Area of stationary object
If repeater amplification is increased to improve signal coverage, then coverage area is expanded, but noise amplification increases
Solution Approach 1:
The patent dynamically adjusts the repeater's amplification gain parameter based on measured downlink RSRP values. By changing the gain parameter according to actual signal conditions, the system can expand coverage area when needed while preventing excessive noise amplification by reducing gain when the signal is already sufficient, thus resolving the contradiction between coverage expansion and noise control.
Solution Approach 2:
The feedback mechanism allows the system to monitor actual signal quality and adjust amplification accordingly. The network node receives RSRP measurements from the repeater and modifies the amplification factor to achieve optimal coverage while minimizing noise amplification, creating a balanced solution between these competing requirements.
3Ease of operation
If fixed power levels are used for reference signal transmission, then device operation is simplified, but link quality optimization is insufficient
Solution Approach 1:
The patent introduces dynamic power level adjustment based on measured downlink RSRP values. Instead of using fixed power levels, the system changes the transmit power parameter according to actual link conditions, enabling optimization of link quality while maintaining relatively simple operation through automated network-controlled adjustment rather than manual intervention.
Data Source
AI summary
Embodiments of the present disclosure relate to methods, devices and computer readable media for communication. A repeater forwards with a first power level, to a network device, a first RS received from a terminal device. And the repeater forwards with a second power level, a second RS received from the terminal device. And the repeater receives, from the network device, configuration regarding power control for the repeater. In this way, the transmitting power of repeater and terminal device can be determined according to the quality of two links respectively.