System for Testing an Embedded Wireless Transceiver

• US 20080287117A1
• Filed: 08/16/2007
• Published: 11/20/2008
• 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, Petersen, Peter
• Granted Patent: US 7,865,147 B2
• Time in Patent Office: Days
• US Class Current: 455/423
• CPC Class Codes: H04B 17/0085 using test signal generators
• CPC Class Codes: H04B 17/15 Performance testing
• CPC Class Codes: H04B 17/29 Performance testing
• CPC Class Codes: H04L 1/16 in which the return channel carries supervisory signals, e.g. repetition request signals
• CPC Class Codes: H04L 1/24 Testing correct operation
• CPC Class Codes: H04L 43/50 Testing arrangements
• CPC Class Codes: H04W 24/06 Testing, supervising or monitoring using simulated traffic
• CPC Class Codes: H04W 52/48 during retransmission after error or non-acknowledgment
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A test equipment for testing a wireless communication device includes a wireless transceiver and a controller. The wireless transceiver transmits a first series of packets while operating in a first mode. The wireless transceiver transmits a second series of packets while operating in a second mode. The wireless transceiver receives acknowledgment packets. The controller controls the transceiver to transmit the first series of packets. The controller counts the acknowledgment packets received by the transceiver in response to transmitting each of the first series of packets. The controller controls the transceiver to transmit the second series of packets when the count exceeds a predetermined count.

Claims

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

a wireless transceiver that is operative to transmit a first series of packets while operating in a first mode, to transmit a second series of packets while operating in a second mode, and to receive acknowledgment packets; and

a controller that is operative to control said transceiver to transmit said first series of packets, to count said acknowledgment packets received by said transceiver in response to transmitting each of said first series of packets, and to control said transceiver to transmit said second series of packets when said count exceeds a predetermined count.

2. The test equipment of claim 1 wherein said transceiver transmits at a first power level when in said first mode and a second power level when in said second mode.

3. The test equipment of claim 2 wherein said controller sets said first power level to a predetermined power level when said transceiver transmits a predetermined number of packets without receiving at least one of said acknowledgment packets in response to transmitting said first series of packets.

4. The test equipment of claim 1 wherein said transceiver transmits using a first modulation technique when in said first mode and a second modulation technique when in said second mode.

5. The test equipment of claim 1 wherein said transceiver transmits at a first data rate when in said first mode and a second data rate when in said second mode.

6. The test equipment of claim 1 further comprising memory operative to store information that includes at least one of said first mode, said second mode, a total number of packets transmitted, a total number of packet type acknowledgement packets, and a total number of waveform acknowledgment packets received.

7. The test equipment of claim 6 wherein said controller is operative to transfer said information to an analysis system after a predetermined number of packets have been transmitted and after receiving a last acknowledgement packet.

8. The test equipment of claim 7 wherein said analysis system is operative to determine at least one of a sensitivity value and a packet error rate based on said information.

9. 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 and transmits said acknowledgement packets when each of said first series of packets are received.

10. A method of testing a wireless communication device, comprising:

transmitting a first series of packets, separated by a predetermined threshold, while operating in a first mode;

receiving an acknowledgement packet in response to transmitting each of said first series of packets;

counting said acknowledgement packets received; and

transmitting a second series of packets, while operating in said second mode, when said count exceeds a predetermined count.

11. The method of claim 10 further comprising transmitting at a first power level when operating in said first mode and transmitting at a second power level when operating in said second mode.

12. The method of claim 11 further comprising setting said first power level to a predetermined power level when a predetermined number of packets have been transmitted without receiving at least one of said acknowledgement packets in response to transmitting said first series of packets.

13. The method of claim 10 further comprising transmitting using a first modulation technique when operating in said first mode and transmitting using a second modulation technique when operating is said second mode.

14. The method of claim 10 further comprising transmitting at a first data rate when operating in said first mode and transmitting at a second data rate when operating in said second mode.

15. The method of claim 10 further comprising storing information that includes at least one of said first mode, said second mode, a total number of packets transmitted, a total number of packet type acknowledgement packets, and a total number of waveform acknowledgment packets received.

16. The method of claim 15 further comprising transferring said information to an analysis system after a predetermined number of packets have been transmitted and after receiving a last acknowledgement packet.

17. The method of claim 15 further comprising determining at least one of a sensitivity value and a packet error rate based on said information.