Patent ID: 8571574

Claim:
A method to provide wireless network services using three-dimensional access zones, comprising: determining distances associated with multiple signals collected from a wireless device at multiple reference point devices having known three-dimensional positions within a three-dimensional network space of a wireless network; determining directional information associated with one or more of the multiple signals collected from the wireless device at the multiple reference point devices, wherein multiple individual spheres are centered at the multiple reference point devices based on the determined distances associated with the multiple signals collected from the wireless device; identifying a circular arc where the circular arc extends between the intersections of the multiple individual spheres and extends within the volume of one or more of the multiple individual spheres, wherein the circular arc provides multiple possible positions for the wireless device; excluding an arc of the multiple possible positions along the circular arc based on the determined directional information associated with the one or more of the multiple signals that one or more of the multiple reference point devices collected from the wireless device; and determining a three-dimensional position for the wireless device within the three-dimensional network space, wherein the three-dimensional position for the wireless device comprises one of the multiple possible positions along the circular arc other than the arc of the multiple possible positions that was excluded based on the determined directional information.