Repeater Power Headroom Reporting for Wireless Link Control

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Solution Overview

Problem

In wireless communications systems with repeaters, the base station lacks information about the absolute gain each repeater should apply to optimize end-to-end link budget and key performance indicators, leading to suboptimal power efficiency and system performance.

Innovation Solution

Implement repeater power headroom reports (RPHR) to provide the base station with information on repeater capabilities, allowing for optimized power management and improved system performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If repeaters are deployed to extend coverage and improve signal transmission, then the coverage area and signal reliability are improved, but the base station lacks information about repeater power capabilities leading to suboptimal power efficiency

Engineering Contradiction:
Improvesignal transmission reliabilityVSAvoidrepeater power efficiency
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements a feedback mechanism where repeaters report their power headroom information to the base station. This allows the base station to receive feedback about available repeater power resources and adjust transmission parameters accordingly, optimizing the overall power efficiency of the wireless communication system while maintaining reliable signal transmission through deployed repeaters.

Inventive Principle:
Principle #23Feedback

2Reliability

If the base station transmits with higher power to improve link budget, then the link reliability is improved, but the overall system power consumption increases

Engineering Contradiction:
Improvelink budgetVSAvoidbase station power consumption
Core Design Contradiction:
ReliabilityVSUse of energy by stationary object

Solution Approach 1:

The patent enables dynamic parameter changes by allowing the base station to adjust transmission parameters based on reported repeater power headroom information. Instead of always transmitting at maximum power, the base station can optimize transmission parameters according to available repeater power resources, thereby improving link budget reliability while reducing overall system power consumption.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12483996B2Power headroom report and control for repeaters
Publication Date: 2025.11.25 QUALCOMM INC
  • US12483996B2 patent drawing
  • US12483996B2 patent drawing
  • US12483996B2 patent drawing

AI summary

Certain aspects of the present disclosure provide a method for wireless communication by a network entity, generally including receiving a repeater power headroom report (RPHR) for at least a first repeater and performing one or more actions, based on the RPHR, to maintain a link between a user equipment (UE) and the network entity or another UE.