Metropolitan Beacon System

Metropolitan Beacon System (MBS) is a precise three-dimensional location and timing technology designed to provide services to entire metropolitan areas where GPS or other satellite location signals are blocked or can’t be reliably received.{{cite web|title=Metropolitan Beacon System : GPS World|url=http://gpsworld.com/tag/metropolitan-beacon-system/|website=gpsworld.com}}

NextNav is one of the early adapters and developers of MBS.{{cite web|title=NextNav and Broadcom Partner for Indoor Accuracy|url=http://gpsworld.com/nextnav-and-broadcom-partner-for-indoor-accuracy/|website=GPS World|language=en-US|date=22 October 2013}}