Wireless TeleCommunications Location Based Services Scheme Selection

• US 20140349678A1
• Filed: 07/31/2014
• Published: 11/27/2014
• Est. Priority Date: 03/28/2002
• Status: Active Grant

• Current Assignee: TeleCommunication Systems Inc (Comtech Telecommunications Corporation)
• Original Assignee: TeleCommunication Systems Inc (Comtech Telecommunications Corporation)
• Inventors: Havlark, Arlene, Burton, Victor, Ahrens, John
• Granted Patent: US 9,599,717 B2
• Time in Patent Office: Days
• US Class Current: 455/456.1
• CPC Class Codes: G01S 19/05 providing aiding data
• CPC Class Codes: G01S 5/0054 of actual mobile position, i.e. position calculation on base station
• CPC Class Codes: G01S 5/0236 Assistance data, e.g. base station almanac
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/024 Guidance services
• CPC Class Codes: H04W 4/029 Location-based management or tracking services

Abstract

An intelligent system for choosing selection schemes to be tried in a predetermined order for determining the location of a wireless mobile client, including retrieving a last known position record from a cache, checking serving network capability, choosing an initial selection scheme according to parameters including at least the required response time and the requested location method, including a method employing navigational satellites, attempting to retrieve a current position record, trying successive untried selection schemes in turn according to a predetermined algorithm if no current position record has been retrieved, and returning the current position record and updating the last known position record, or returning an error if no current position record has been retrieved, and returning the last known position record if an error has been returned, the last known position record exists in the cache and the last known position record has not expired.

Claims

1. A method of responding in a wireless network to a location request, comprising:

determining a sensitivity of delay to a response to said location request; and

based on said determined sensitivity, selecting between a cached last known position of a relevant subscriber, and newly determined position information.

2-24. -24. (canceled)