Patent ID: 9476984
Filing Date: 2016-10-25
CPC Classification: G01S

Claim Text:
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.