System for Testing an Embedded Wireless Transceiver

• US 20080293363A1
• Filed: 08/16/2007
• Published: 11/27/2008
• Est. Priority Date: 04/14/2006
• Status: Active Grant

• Current Assignee: LitePoint Corporation (Teradyne Incorporated)
• Original Assignee: LitePoint Corporation (Teradyne Incorporated)
• Inventors: Olgaard, Christian Volf
• Granted Patent: US 8,131,223 B2
• Time in Patent Office: Days
• US Class Current: 455/67.7
• CPC Class Codes: H04B 17/0085 using test signal generators
• CPC Class Codes: H04B 17/29 Performance testing

Abstract

A test equipment for testing a wireless communication device includes a wireless transceiver, memory, and a controller. The wireless transceiver transmits a first and second series of packets. The wireless transceiver receives a power level indicator that is based on at least one of the first series of packets. The memory stores the power level indicator. The controller performs a signal strength test. More specifically, the controller controls the transceiver to transmit the first series of packets at a first power level. The controller stores the power level indicator in memory when the power level indicator is received by the transceiver. The controller controls the transceiver to transmit the second series of packets at a second power level.

Claims

1. A test equipment for testing a wireless communication device, comprising:

a wireless transceiver that is operative to transmit a first and second series of packets and to receive a power level indicator that is based on at least one of said first series of packets;

memory that is operative to store said power level indicator; and

a controller that is operative to perform a signal strength test by controlling said transceiver to transmit said first series of packets at a first power level, storing said power level indicator in memory when received by said transceiver, and controlling said transceiver to transmit said second series of packets at a second power level subsequent to receiving said power level indicator.

2. The test equipment of claim 1 wherein said second power level is less than said first power level.

3. The test equipment of claim 1 wherein said second power level is greater than said first power level.

4. The test equipment of claim 1 wherein said second power level is based on said power level indicator.

5. The test equipment of claim 1 wherein said transceiver is operative to receive an acknowledgment packet in response to transmitting each of said first series of packets.

6. The test equipment of claim 5 wherein said transmitter is operative to transmit said first series of packets until a predetermined number of acknowledgement packets have been received.

7. The test equipment of claim 1 wherein said power level indicator indicates whether said first power level is one of greater than a predetermined threshold and less than said predetermined threshold.

8. The test equipment of claim 1 wherein said power level indicator comprises a plurality of power level packets and wherein a total of said plurality of power level packets indicates a signal strength of said first series of packets.

9. The test equipment of claim 1 wherein said controller is operative to determine a calibration offset based on at least one of said first power level, said power level indicator, and said second power level.

10. A wireless communication system in a test environment comprising the test equipment of claim 1 and further comprising a device under test (DUT) that is operative to receive said first series of packets, to evaluate a signal strength of at least one of said first series of packets, and to transmit said power level indicator, wherein said power level indicator is based on said signal strength.

11. The wireless communication system of claim 10 wherein said DUT is operative to transmit an acknowledgement packet in response to receiving each of said first series of packets.

12. The wireless communication system of claim 11 wherein said DUT is operative to transmit said power level indicator after transmitting a predetermined number of said acknowledgment packets.

13. A method for testing a wireless communication device, comprising:

performing a signal strength test by;

transmitting a first series of packets at a first power level;

receiving a power level indicator that is based on at least one of said first series of packets;

storing said power level indicator; and

transmitting a second series of packets at a second power level subsequent to receiving said power level indicator.

14. The method of claim 13 wherein said second power level is less than said first power level.

15. The method of claim 13 wherein said second power level is greater than said first power level.

16. The method of claim 13 wherein said second power level is based on said power level indicator.

17. The method of claim 13 further comprising receiving an acknowledgment packet in response to transmitting each of said first series of packets.

18. The method of claim 17 further comprising transmitting said first series of packets until a predetermined number of acknowledgment packets have been received.

19. The method of claim 13 wherein said power level indicator indicates whether said first power level is one of greater than a predetermined threshold and less than said predetermined threshold.

20. The method of claim 13 wherein said power level indicator comprises a plurality of power level packets and wherein a total number of said plurality of power level packets indicates a signal strength of said first series of packets.

21. The method of claim 13 further comprising calculating an offset based on at least one of said power level indicator, said first power level, and said second power level.

22. A test equipment for testing a wireless communication device, comprising:

a wireless transceiver that is operative to transmit a series of packets and to receive a power level indicator that is based on at least one of said series of packets;

memory that is operative to store said power level indicator; and

a controller that is operative to perform a signal strength test by controlling said transceiver to transmit said series of packets at a predetermined power level and storing said power level indicator in memory when received by said transceiver.

23. The test equipment of claim 22 wherein said power level indicator represents a signal strength of said at least one of said first series of packets.

24. The test equipment of claim 23 wherein said power level indicator comprises a plurality of power level packets and wherein a total of said plurality of power level packets indicates said signal strength.

25. A wireless communication system in a test environment comprising the test equipment of claim 22 and further comprising a device under test (DUT) that is operative to receive said first series of packets, to evaluate a signal strength of at least one of said first series of packets, and to transmit said power level indicator, wherein said power level indicator is based on said signal strength.

26. A method for testing a wireless communication device, comprising:

performing a signal strength test by;

transmitting a series of packets;

receiving a power level indicator that is based on at least one of said series of packets; and

storing said power level indicator when received.

27. The method of claim 26 wherein said power level indicator represents a signal strength of at least one of said series of packets.

28. The method of claim 27 wherein said power level indicator comprises a plurality of power level packets and wherein a total of said plurality of power level packets indicates said signal strength.