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Adaptive voltage modification (AVM) controller for mitigating power interruptions at radio frequency (RF) antennas

專利號
US10868471B2
公開日期
2020-12-15
申請人
T-Mobile USA, Inc.(US WA Bellevue)
發(fā)明人
Steve Fischer
IPC分類
H02M3/335; H01Q1/00; G01R27/02; G05F1/62
技術(shù)領(lǐng)域
avm,rru,voltage,power,controller,may,dc,antennas,boost,metadata
地域: WA WA Bellevue

摘要

This disclosure describes techniques to identify and mitigate an effect of a power interruption that impacts the operation of Radio Frequency (RF) antennas associated with a telecommunications network. More specifically, an Adaptive Voltage Modification (AVM) controller is described that is configured to monitor and detect a change in voltage that occurs during a power transmission from a Direct Current (DC) power source to a Remote Radio Unit (RRU). A power interruption may include a power disruption or a power surge. The AVM controller may be configured to cause a potential transformer that is coupled between the DC power source and the RRU to incrementally step-up or step-down the voltage of a power transmission from the DC power source. In this way, the AVM controller may preemptively mitigate an impact of a power interruption on Quality of Service (QoS) parameters associated with signal data transmitted by the RF antennas.

說明書

In doing so, the AVM controller may further determine a voltage-reduction reaction time that is required to implement a determined voltage-reduction, based at least in part on the voltage step-down rate of the potential transformer. Thus, the AVM controller may cause the potential transformer to initiate the voltage-reduction at a point-in-time that occurs prior to the inferred power surge by a time interval equal to or greater than the voltage-reduction reaction time.

In a non-limiting example, an AVM controller may infer that a power surge is likely to occur within a predetermined time interval, such as ten minutes. The AVM controller may further determine that the voltage-reduction reaction time associated with the potential transformer is greater than the predetermined time interval (i.e. ten minutes), based at least in part on the step-down voltage rate of the potential transformer. In the event that the AVM controller determines that it is unable to implement the voltage-reduction before the power surge occurs, the AVM controller may transmit a power cut-off control signal to the DC power source that causes the DC power source to cease power transmissions. In doing so, the AVM controller may protect the hardware and software elements of the RF antennas (i.e. baseband unit and RRU) from the impact of the power surge.

Further, the term “techniques,” as used herein, may refer to system(s), method(s), computer-readable instruction(s), module(s), algorithms, hardware logic, and/or operation(s) as permitted by the context described above and throughout the document.

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