Method and apparatus for testing assisted position location capable devices

• US 20030148761A1
• Filed: 02/04/2002
• Published: 08/07/2003
• Est. Priority Date: 02/04/2002
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Gaal, Peter
• Granted Patent: US 6,760,582 B2
• Time in Patent Office: Days
• US Class Current: 455/423
• CPC Class Codes: G01S 19/05 providing aiding data
• CPC Class Codes: G01S 19/23 Testing, monitoring, correcting or calibrating of receiver elements
• CPC Class Codes: G01S 19/25 involving aiding data received from a cooperating element, e.g. assisted GPS
• CPC Class Codes: G01S 2013/466 by Trilateration, i.e. two antennas or two sensors determine separately the distance to a target, whereby with the knowledge of the baseline length, i.e. the distance between the antennas or sensors, the position data of the target is determined

Abstract

A method and apparatus for testing assisted position location capable devices that includes providing a position determination entity (PDE) simulator that is in communication with a base station simulator simulating one or more base stations and connecting an assisted position location capable device under test (DUT) to the base station simulator and a global positioning system (GPS) simulator. Then, initiating a test sequence wherein the DUT receives a set of predetermined GPS signals and at a desired time the DUT requests assistance data from the base station simulator and the base station simulator requests assistance data from the PDE simulator, wherein the PDE simulator provides data that is independent of the GPS simulator data to the base station and the base station transfers the PDE data to the DUT. The PDE data is a set of predetermined responses to any one of a plurality of DUT requests indexed by elapsed test time.

Claims

1. A method for testing assisted position location capable devices, the method comprising:

providing a position determination entity (PDE) simulator that is in communication with a base station simulator;

connecting an assisted position location capable device under test (DUT) to the base station simulator and a global positioning system (GPS) simulator; and

initiating a test sequence wherein the DUT receives a set of predetermined GPS signals and at a desired test sequence time the DUT requests assistance data from the base station simulator, and the base station simulator requests assistance data from the PDE simulator, wherein the PDE simulator provides data that is produced in accordance with the DUT message type and system elapsed time, and is produced independently of the GPS simulator data, to the base station and wherein the base station transfers the PDE data to the DUT.

2. A method as defined in claim 1, wherein the PDE data is a set of predetermined responses to any one of a plurality of DUT requests indexed by elapsed test time.

3. A method for testing assisted position location capable devices, the method comprising:

providing a position determination entity (PDE) simulator that is in communication with a base station simulator;

connecting an assisted position location capable device under test (DUT) to the base station simulator and a global positioning system (GPS) simulator; and

initiating a test sequence wherein the PDE simulator provides acquisition assistance data that is produced in accordance with system elapsed time and independently of the GPS simulator, and a request for the DUT to make pseudo-range measurements, and the DUT receives the assistance data and the request and using the assistance data makes a pseudo-range measurement and provides the pseudo-range measurement to the base station simulator.

4. A method as defined in claim 3, wherein the PDE data is a set of predetermined responses indexed by elapsed test time.

5. A method for testing assisted position location capable devices, the method comprising:

providing a position determination entity (PDE) simulator that is in communication with a base station simulator;

connecting an assisted position location capable device under test (DUT) to the base station simulator and a global positioning system (GPS) simulator; and

initiating a test sequence wherein the PDE simulator provides acquisition assistance data that is produced in accordance with system elapsed time and independently of the GPS simulator, and a request for the DUT to make a location request, and the DUT receives the assistance data and the request and using the assistance data makes a location measurement and provides the location measurement to the base station simulator.

6. A method as defined in claim 5, wherein the PDE data is a set of predetermined responses indexed by elapsed test time.

7. A position determination entity simulator comprising:

a controller configured to receive location assistance responses and to output a location assistance response;

a database populated with predetermined location assistance responses corresponding to a set of predetermined of assistance requests, wherein an appropriate response is selected from the database in accordance with the a received type of assistance request and the elapsed test duration.

8. The position determination entity simulator as defined in claim 7 wherein the location assistance responses correspond to global positioning system (GPS) data.

9. The position determination entity simulator as defined in claim 7 wherein the location assistance responses correspond to advanced forward link trilateration (AFLT) data.

10. A system for testing assisted position location capable devices, the method comprising:

means for providing a position determination entity (PDE) simulator that is in communication with a base station simulator simulating at least one base station;

means for connecting an assisted position location capable device under test (DUT) to the base station simulator and a global positioning system (GPS) simulator; and

means for initiating a test sequence wherein the DUT receives a set of predetermined GPS signals and at a desired time the DUT requests assistance data from the base station simulator and the base station simulator requests assistance data from the PDE simulator, wherein the PDE simulator provides data that is independent of the GPS simulator data to the base station and the base station transfers the PDE data to the DUT.

11. A system for testing assisted position location capable devices, the method comprising:

means for providing a position determination entity (PDE) simulator that is in communication with a base station simulator simulating at least one base station;

means for connecting an assisted position location capable device under test (DUT) to the base station simulator and a global positioning system (GPS) simulator; and

means for initiating a test sequence wherein the PDE simulator provides acquisition assistance data and a request for the DUT to make pseudo-range measurements, and the DUT receives the assistance data and the request and using the assistance data makes a pseudo-range measurement and provides the pseudo-range measurement to the base station simulator.