Feedback based indoor localization using digital off-air access units
First Claim
1. A system for indoor localization using satellite navigation signals in a Distributed Antenna System, the system comprising:
- a plurality of Off-Air Access Units (OAAUs), each of the plurality of OAAUs operable to receive an individual satellite navigation signal from at least one of a plurality of satellites and operable to route signals optically to one or more digital access units (DAUs);
a plurality of remote digital remote units (DRUs) located at a remote location, wherein the plurality of remote DRUs are operable to receive signals from a plurality of local DAUs;
an algorithm to delay each individual satellite navigation signal for providing indoor localization at each of the plurality of DRUs; and
a global positioning system (GPS) receiver at the remote location used in a feedback loop with the DRU to control the delays.
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Accused Products
Abstract
A system for indoor localization using satellite navigation signals in a Distributed Antenna System includes a plurality of Off-Air Access Units (OAAUs). Each of the plurality of OAAUs is operable to receive an individual satellite navigation signal from at least one of a plurality of satellites and operable to route signals optically to one or more DAUs. The system also includes a plurality of remote DRUs located at a remote location. The plurality of remote DRUs are operable to receive signals from a plurality of local DAUs. The system further includes an algorithm to delay each individual satellite navigation signal for providing indoor localization at each of the plurality of DRUs and a GPS receiver at the remote location used in a feedback loop with the DRU to control the delays.
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Citations
10 Claims
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1. A system for indoor localization using satellite navigation signals in a Distributed Antenna System, the system comprising:
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a plurality of Off-Air Access Units (OAAUs), each of the plurality of OAAUs operable to receive an individual satellite navigation signal from at least one of a plurality of satellites and operable to route signals optically to one or more digital access units (DAUs); a plurality of remote digital remote units (DRUs) located at a remote location, wherein the plurality of remote DRUs are operable to receive signals from a plurality of local DAUs; an algorithm to delay each individual satellite navigation signal for providing indoor localization at each of the plurality of DRUs; and a global positioning system (GPS) receiver at the remote location used in a feedback loop with the DRU to control the delays. - View Dependent Claims (2, 3, 4, 5)
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6. A system for indoor localization using GPS signals in a Distributed Antenna System, the system comprising:
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a plurality of Off-Air Access Units (OAAUs) connected together via a daisy chain configuration and operable to receive a global positioning system (GPS) signal from at least one of a plurality of GPS satellites, and operable to route signals optically to one or more digital access units (DAUs); a plurality of remote digital remote units (DRUs) located at a remote location, wherein the plurality of remote DRUs are operable to receive signals from at least one of the one or more DAUs; an algorithm to delay the GPS signals received at the plurality of OAAUs for providing indoor localization at each of the plurality of remote DRUs; and a GPS receiver at the remote location used in a feedback loop with the plurality of remote DRUs to control the delays. - View Dependent Claims (7)
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8. A system for indoor localization using global positioning system (GPS) signals in a Distributed Antenna System, the system comprising:
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a plurality of Multiple Input Off-Air Access Units (OAAUs), receiving a GPS signal from at least one of a plurality of GPS satellites and operable to route signals optically to one or more digital access units (DAUs); a plurality of remote digital remote units (DRUs) located at a remote location, wherein the plurality of remote DRUs are operable to receive signals from one or more of the one or more DAUs; an algorithm to delay each individual GPS satellite signal for providing indoor localization at each of the plurality of DRUs; and a GPS receiver at the remote location used in a feedback loop with the DRU to control the delays. - View Dependent Claims (9, 10)
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Specification