INDOOR LOCALIZATION USING ANALOG OFF-AIR ACCESS UNITS
A system for indoor localization using GPS 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 a GPS signal from at least one of a plurality of GPS satellites and operable to route signals optically to one or more HUBs. The system also includes a plurality of remote units (RUs) located at a Remote location. The plurality of RUs are operable to receive signals from a plurality of local HUBs. The system further includes an algorithm to delay each individual GPS satellite signal to provide indoor localization at each of the plurality of RUs.
1 . A system for indoor localization using GPS 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 a GPS signal from at least one of a plurality of GPS satellites and operable to route signals optically to one or more local HUBs;
a plurality of remote units (RUs) located at Remote locations, wherein the plurality of RUs are operable to receive signals from one or more of the plurality of local HUBs; and
a delay unit operable to delay GPS satellite signal to provide indoor localization at each of the plurality of RUs.
2 . The system of claim 1 wherein the delay unit includes an algorithm to delay each individual GPS satellite signal.
3 . The system of claim 1 wherein the plurality of local HUBs are coupled via at least one of a Ethernet cable, Optical Fiber, or Wireless Link.
4 . The system of claim 1 wherein the plurality of OAAUs are connected to a plurality of HUBs via at least one of Ethernet cable, Optical Fiber, RF Cable or Wireless Link.
5 . The system of claim 1 wherein the OAAUs are Multiple Input Off-Air Access Units.
6 . A system for indoor localization using GPS signals in a Distributed Antenna System, the system comprising:
a plurality of Off-Air Access Units (OAAUs), each of the plurality of OAAUs:
being connected together via a daisy chain configuration;
receiving a GPS signal from at least one of a plurality of GPS satellites; and
being operable to route signals optically to one or more HUBs;
a plurality of remote units (RUs) located at one or more Remote locations, wherein the plurality of RUs are operable to receive signals from a plurality of local HUBs; and
a delay block operable to delay the GPS signal.
7 . The system of claim 6 wherein the delay block includes an algorithm operable to delay each individual GPS satellite signal for providing indoor localization at each of the plurality of RUs.
8 . The system of claim 6 wherein the plurality of Off-Air Access Units (OAAUs) are coupled via at least one of Ethernet cable, Optical Fiber, RF Cable or Wireless Link.
9 . A system for indoor localization using GPS signals in a Distributed Antenna System, the system comprising:
a plurality of 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 HUBs;
a plurality of remote units (RUs) located at one or more Remote locations, wherein the plurality of RUs are operable to receive signals from one or more of a plurality of local HUBs;
a de-multiplexer to extract one of the GPS satellite signals and time delay it at each of the plurality of RUs; and
an algorithm for determining the delay at each of the plurality of RUs to provide indoor localization.