Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas

• US 20060202888A1
• Filed: 02/23/2006
• Published: 09/14/2006
• Est. Priority Date: 02/25/2002
• Status: Abandoned Application

• Current Assignee: TeleCommunication Systems Inc (Comtech Telecommunications Corporation)
• Original Assignee: TeleCommunication Systems Inc (Comtech Telecommunications Corporation)
• Inventors: Pitt, Lance Douglas, Lamprecht, Leslie Johann, Martin, Jeffrey Thomas
• Application Number:
  US11/359,583
• Publication Number:
  US 20060202888A1
• Time in Patent Office: Days
• US Class Current: 342/357.420
• CPC Class Codes: F16M 11/041 Allowing quick release of the apparatus
• CPC Class Codes: F16M 11/105 the horizontal axis being the roll axis, e.g. for creating a landscape-portrait rotation
• CPC Class Codes: F16M 11/2021 around a horizontal axis F16M11/2035 takes precedence
• CPC Class Codes: F16M 13/00 Other supports for positioning apparatus or articles heads thereof F16M11/02 ; undercarriages thereof F16M11/20 ; adapted to be stuck in the ground A45F3/44 ; sockets or holders for poles or posts E04H12/22; Means for steadying hand-held apparatus or articles supports for measuring instruments G01D11/30; supports for casings of remote control switching devices H01H9/025
• CPC Class Codes: F16M 2200/024 by positive interaction, e.g. male-female connections
• CPC Class Codes: F16M 2200/044 for balancing rotational movement of the undercarriage
• CPC Class Codes: F16M 2200/08 Foot or support base
• CPC Class Codes: Y10S 248/919 Adjustably orientable video screen support
• CPC Class Codes: Y10S 248/922 Angular

Abstract

Locating satellites (e.g., GPS) are culled into a preferred group having a longest dwell time based on a time passing through an ellipsoid arc path through a cone of space, and communicated to mobile devices within a particular region (e.g., serviced by a particular base station). The culled locating satellites may select those visible, or more preferably those locating satellites currently within a cone of space above the relevant base station are selected for communication by a mobile device within the service area of the base station. The inverted cone of space may be defined for each antenna structure for any given base station, and each has 360 degrees of coverage, or less than 360 degrees of coverage, with relevant locating satellites. Thus, cell sites may be specifically used as reference points for culling the ephemeris information used to expedite Assisted GPS location determinations.

Claims

1. A method of culling a plurality of locating satellites into a sub-plurality for communication via a wireless base station, comprising:

defining an inverted cone above a reference point physically distant from a relevant mobile device;

culling said plurality of locating satellites to a culled group of locating satellites within said inverted cone above said reference point; and

passing an identity of said culled group of locating satellites to said relevant mobile device.

2-16. -16. (canceled)