Patent · US Active

Distributed antenna system for use along train track

US10798652B2 · kind B2 · utility

0Cited by
17References
22Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 3, 2019
Grant dateOct 6, 2020
Priority date
Expiry dateDec 3, 2039

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02D30/70
  • WIPO fieldDigital communication
  • WIPO sectorElectrical engineering

Abstract

One embodiment is directed to a distributed antenna system (DAS) configured to cause a remote antenna unit deployed near a railroad track to operate in a low-power and/or muted operational state. While the remote antenna unit is operating in the low-power and/or muted operational state, the DAS determines if a train is sufficiently close to a coverage area of the remote antenna unit to trigger a change in an operational state of the remote antenna unit. In response to such a determination, the DAS causes the remote antenna unit to operate in a normal operational state. While the remote antenna unit is operating in the normal operational state, the DAS determines if the train has exited the coverage area of the remote antenna unit. In response to such a determination, the DAS causes the remote antenna unit to operate in the low-power and/or muted operational state.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.