GPS assistance data delivery method and system

• US 6,625,458 B2
• Filed: 02/15/2002
• Issued: 09/23/2003
• Est. Priority Date: 05/07/1999
• Status: Expired due to Fees

• Current Assignee: Nokia Mobile Phones UK Limited (Nokia Corporation)
• Original Assignee: Nokia Mobile Phones UK Limited (Nokia Corporation)
• Inventors: Pirilä, Hannu, Pihl, Kari
• Primary Examiner(s): VO, NGUYEN THANH
• Application Number:
  US10/076,968
• Publication Number:
  US 20020077126A1
• Time in Patent Office: 585 Days
• Field of Search: 455/456, 455/461, 455/457, 342/357.06, 342/357.12, 701/200, 701/213
• US Class Current: 455/456.1
• CPC Class Codes: G01S 19/05 providing aiding data
• CPC Class Codes: G01S 19/07 providing data for correcting measured positioning data, e.g. DGPS [differential GPS] or ionosphere corrections
• CPC Class Codes: G01S 5/0045 Transmission from base station to mobile station G01S5/009 takes precedence
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A Network Assisted Mobile Terminal GPS system includes a plurality of GPS-capable mobile terminals (10) each having a transceiver, and a wireless telecommunications network (32) having at least one base site transceiver (30) for transmitting GPS Assistance Data to individual ones of the plurality of GPS-capable mobile stations using a point-to-point signalling protocol. In the illustrative embodiment described herein the point-to-point signalling protocol is comprised of at least one of an IMSI (International Mobile Subscriber Identity) Attach, a Normal Location Update, or a Periodic Location Update signalling protocol.

Claims

1. A Network Assisted Mobile Terminal GPS system, comprising:

a plurality of GPS-capable mobile terminals each comprising a transceiver; and

a wireless telecommunications network comprising at least one base site transceiver for transmitting GPS Assistance Data to individual ones of said plurality of GPS-capable mobile stations using a point-to-point signalling protocol, where the GPS Assistance Data is transmitted in response to a message that is received from an individual one of said mobile stations, where the message that is received from the mobile station is defined for a purpose other than for requesting GPS Assistance Data.

2. A system as in claim 1, wherein the message is comprised of at least one of an IMSI (International Mobile Subscriber Identity) Attach, a Normal Location Update, or a Periodic Location Update signalling protocol.

3. A system as in claim 1, wherein the GPS Assistance Data has a lifetime that is greater than one hour.

4. A method for providing GPS Assistance data to a mobile station, comprising steps of:

making a request for the GPS Assistance Data with a mobile station; and

transmitting the requested GPS Assistance Data from a wireless network to the mobile station using at least one point-to-point message, where the GPS Assistance Data is requested by the mobile station as a part of a transmission of a message to the wireless network that is required to be periodically received from the mobile station by the wireless network, where the message that is required to be periodically received is defined for a purpose other than for requesting GPS Assistance Data.

5. A system for providing GPS Assistance data to a mobile station, comprising:

circuitry in said mobile station for making a request for the GPS Assistance Data using a Mobile Originated Location Request after a Location Update with a Follow-On Request pending; and

circuitry in a wireless network for delivering the requested GPS Assistance Data to the mobile station in a point-to-point manner using a Follow-On procedure.

6. A system as in claim 5, where the Location Update is one of an IMSI (International Mobile Subscriber Identity) Attach, a Normal Location Update, or a Periodic Location Update.

7. A wireless communication system, comprising:

a mobile station comprising means for making a request for GPS Assistance Data using a Mobile Originated Location Request after a Location Update with a Follow-On Request pending; and

a wireless network comprising means for sending the requested GPS Assistance Data to the mobile station in a point-to-point manner using a Follow-On procedure.

8. A wireless communication system as in claim 7, where the Location Update is one of an IMSI (International Mobile Subscriber Identity) Attach, a Normal Location Update, or a Periodic Location Update.