Indoor trilateralization using digital off-air access units
AssigneeDali Systems Co. Ltd.
InventorsDaryl Meerkerk, Shawn Patrick Stapleton
Life of this patent
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Abstract
A system for indoor localization using satellite navigation signals in a Distributed Antenna System. The system includes a plurality of Off-Air Access Units (OAAUs), each operable to receive an individual satellite navigation signal from at least one of a plurality of satellite navigation systems (e.g., GPS, GLONASS, Galileo, QZSS, or BeiDou) and operable to route signals optically to one or more DAUs. The system further includes a plurality of remote DRUs located at a Remote location that are operable to receive signals from a plurality of local DAUs. Moreover, the system includes an algorithm to delay each individual satellite navigation signal for providing indoor localization at each of the plurality of DRUs.
Claims17
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 having directional antennas, wherein each of the plurality of OAAUs are operable to receive an individual satellite navigation signal from at least one of a plurality of satellites;
- one or more Digital Access Units (DAUs), wherein the plurality of OAAUs are communicatively coupled to at least one of the one or more DAUs;
- a plurality of Digital Remote Units (DRUs) located at a remote location, each having multiple directional antennas, wherein each DRU of the plurality of DRUs is operable to:
- receive one or more satellite navigation signals from the one or more DAUs;
- and
- delay each individual satellite navigation signal of the one or more satellite navigation signals based on a positional offset;
- a feedback system communicatively coupled to a first DRU of the plurality of DRUs;
- and
- a GPS receiver at the remote location communicatively coupled to the feedback system, wherein the GPS receiver transmits a measured GPS position to the feedback system.
A system for indoor localization using GPS signals in a Distributed Antenna System, the system comprising:
- a plurality of Multiple Input Off-Air Access Units (MIOAAUs), each having a plurality of directional antennas, wherein each of the plurality of directional antennas is operable to receive an individual GPS satellite signal from at least one of a plurality of GPS satellites;
- one or more local Digital Access Units (DAUs), wherein each of the plurality of MIOAAUs is communicatively coupled to at least one of the one or more local DAUs;
- a plurality of Digital Remote Units (DRUs) located at a remote location with multiple directional antennas, wherein each DRU of the plurality of DRUs is operable to:
- receive one or more GPS satellite signals from the one or more local DAUs;
- and
- delay each individual GPS satellite signal of the one or more GPS satellite signals based on a positional offset;
- a feedback system communicatively coupled to a first DRU of the plurality of DRUs;
- and
- a GPS receiver at the remote location communicatively coupled to the feedback system, wherein the GPS receiver transmits a measured GPS position to the feedback system.
Dependencies are inferred from the claim text.