Access Repeater Beam Control Using Induced UE Power Response
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Solution Overview
Problem
Conventional access repeater devices face challenges in maintaining efficient communication with mobile UEs due to unpredictable movement, high power consumption, and signal attenuation, particularly in 5G and upcoming 6G environments, leading to issues with UE detection and Quality of Experience (QoE).
Innovation Solution
An access repeater device employs a dynamic power management strategy to detect UEs by periodically lowering its Tx power, inducing UEs to increase their Tx power, and using closed-loop feedback to optimize beamforming and power adjustments, ensuring consistent communication and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the repeater device transmits at high power continuously, then the signal coverage and communication reliability are improved, but the power consumption increases
Solution Approach 1:
The repeater device transmits reference signals at periodic intervals rather than continuously. The controller determines transmission periods based on UE distribution characteristics, enabling the system to maintain communication reliability through periodic signal transmission while significantly reducing overall power consumption by avoiding continuous high-power transmission.
Solution Approach 2:
The system dynamically adjusts transmission parameters including power levels and timing based on detected UE distribution. By changing these parameters adaptively, the repeater optimizes the balance between maintaining reliable communication coverage and minimizing power consumption.
2Productivity
If the repeater device uses narrow beam for precise UE tracking, then the communication efficiency is improved, but the device complexity increases
Solution Approach 1:
The system leverages UE-induced responses (such as power adjustments or signal reflections) to infer UE distribution and movement patterns. This self-service approach allows the repeater to track UEs and optimize communication without requiring complex active tracking mechanisms, thereby maintaining communication efficiency while reducing device complexity.
Solution Approach 2:
The repeater detects UE responses to transmitted reference signals and uses this feedback information to infer UE locations and adjust transmission parameters. This feedback mechanism enables efficient communication with mobile UEs without requiring complex tracking systems, as the UE's own response provides the necessary information for optimization.
3Use of energy by moving object
If the repeater device transmits at low power, then the power consumption is reduced, but the UE detection capability deteriorates
Solution Approach 1:
The repeater transmits reference signals at strategically determined periodic intervals, allowing sufficient time between transmissions for UEs to respond. This periodic transmission at optimized power levels enables the system to detect UEs effectively while maintaining lower power consumption compared to continuous transmission.
Solution Approach 2:
The system relies on detecting UE responses to reference signals to determine UE presence and distribution. By using feedback from UE responses (such as received signal strength or power adjustments), the repeater can accurately detect UEs even when transmitting at reduced power levels, as the feedback provides information about UE location and status.
Data Source
AI summary
An access repeater device that controls transmission of a first beam of radio frequency (RF) signals at a first transmit (Tx) power level. A first user equipment (UE) of a set of UEs is detected at a first distance from the access repeater device at a first instance. The access repeater device identifies that a second UE responds to the first beam of RF signals communicated in a test direction from a plurality of different test directions. The access repeater device modulates a transmit power output of the first beam of RF signals towards the second UE in the test direction.