Method For Delaying Signal Transmissions From A Device Under Test (DUT) By Transmitting Congestive Communication Channel Signals

Patent metadata

Field	Value
Publication number	US-2019190840-A1
Application number	US-201715842407-A
Country	US
Kind code	A1
Filing date	Dec 14, 2017
Priority date	Dec 14, 2017
Publication date	Jun 20, 2019
Grant date	—

Abstract

A method for testing a data packet signal transceiver device under test (DUT). Following initial signal communications with a DUT, timing of further transmissions by the DUT may be effectively controlled by transmitting congestive communication channel signals to cause the DUT to detect apparent communication channel activity and in response thereto delay its own signal transmissions.

First claim

What is claimed is:

1 . A method for testing a data packet signal transceiver device under test (DUT), comprising:
receiving, via a communication channel, a DUT data packet signal from a DUT; responding to said DUT data packet signal by transmitting, via said communication channel, a test data packet signal including first identification data related to said test data packet signal; following said responding, further transmitting, via said communication channel, at least one of
said test data packet signal, or
a channel signal excluding said first identification data and congesting at least a portion of said communication channel;
concurrently with at least a portion of said further transmitting, processing said received DUT data packet signal; and terminating said further transmitting.

2 . The method of claim 1 , wherein:
said DUT data packet signal comprises a nominal carrier signal frequency within said communication channel; and said channel signal comprises said nominal carrier signal frequency.

3 . The method of claim 1 , wherein:
said DUT data packet signal comprises a plurality of signal frequencies within said communication channel; and said channel signal comprises at least a portion of said plurality of signal frequencies.

4 . The method of claim 1 , wherein:
said DUT data packet signal comprises at least a portion of a plurality of signal frequencies; and said channel signal comprises said plurality of signal frequencies within said communication channel.

5 . The method of claim 1 , wherein said channel signal comprises another test data packet signal including second identification data different from said first identification data.

6 . A method for testing a data packet signal transceiver device under test (DUT), comprising:
receiving, via a communication channel, a DUT data packet signal from a DUT; responding to said DUT data packet signal by transmitting, via said communication channel, a test data packet signal including first identification data related to said test data packet signal; processing said received DUT data packet signal while at least partially concurrently further transmitting, via said communication channel, at least one of
said test data packet signal, or
a channel signal excluding said first identification data and congesting at least a portion of said communication channel; and
terminating said further transmitting.

7 . The method of claim 6 , wherein:
said DUT data packet signal comprises a nominal carrier signal frequency within said communication channel; and said channel signal comprises said nominal carrier signal frequency.

8 . The method of claim 6 , wherein:
said DUT data packet signal comprises a plurality of signal frequencies within said communication channel; and said channel signal comprises at least a portion of said plurality of signal frequencies.

9 . The method of claim 6 , wherein:
said DUT data packet signal comprises at least a portion of a plurality of signal frequencies; and said channel signal comprises said plurality of signal frequencies within said communication channel.

10 . The method of claim 6 , wherein said channel signal comprises another test data packet signal including second identification data different from said first identification data.

11 . A method for testing a data packet signal transceiver device under test (DUT), comprising:
conveying during each one of a first plurality of time intervals, via a communication channel, a respective one of a plurality of DUT data packet signals from a DUT; conveying during each one of a second plurality of time intervals, via said communication channel, a respective one of a plurality of test data packet signals responsive to a corresponding one of said plurality of DUT data packet signals and including first identification data related to at least a portion of said plurality of test data packet signals; and during each one of a third plurality of time intervals, processing a respective one of said plurality of DUT data packet signals while at least partially concurrently further conveying, via said communication channel, at least one of
said test data packet signal, or
a respective one of a plurality of channel signals excluding said first identification data and congesting at least a portion of said communication channel;
wherein
each one of said second plurality of time intervals follows a respective one of said first plurality of time intervals,
each one of said third plurality of time intervals follows a respective one of said second plurality of time intervals, and
each one of at least a portion of said third plurality of time intervals is followed by a subsequent respective one of said first plurality of time intervals.

12 . The method of claim 11 , wherein:
each one of said plurality of DUT data packet signals comprises a nominal carrier signal frequency within said communication channel; and each one of said plurality of channel signals comprises said nominal carrier signal frequency.

13 . The method of claim 11 , wherein:
each one of said plurality of DUT data packet signals comprises a plurality of signal frequencies within said communication channel; and each one of said plurality of channel signals comprises at least a portion of said plurality of signal frequencies.

14 . The method of claim 11 , wherein:
each one of said plurality of DUT data packet signals comprises at least a portion of a plurality of signal frequencies; and each one of said plurality of channel signals comprises said plurality of signal frequencies within said communication channel.

15 . The method of claim 11 , wherein each one of said plurality of channel signals comprises another test data packet signal including second identification data different from said first identification data.

Assignees

• Litepoint Corp

Inventors

• Cao Chen
• Olgaard Christian Volf
• Wang Ruizu

Classifications

• H04L43/10

  Active monitoring, e.g. heartbeat, ping or trace-route · CPC title

• H04L47/26

  using explicit feedback to the source, e.g. choke packets · CPC title

• H04L47/283 Primary

  in response to processing delays, e.g. caused by jitter or round trip time [RTT] · CPC title

• H04L43/50 Primary

  Testing arrangements · CPC title