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Systems and methods for using protocol information to trigger waveform analysis

  • US 9,369,369 B2
  • Filed: 03/05/2013
  • Issued: 06/14/2016
  • Est. Priority Date: 03/05/2013
  • Status: Active Grant
First Claim
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1. A system for testing a data communication device under test (DUT), comprising:

  • a wireless traffic, protocol, and signal analyzer including;

    a packet transmission datapath for encoding and transmitting packetized data streams to said DUT;

    a packet reception datapath for receiving and decoding packetized data streams from said DUT;

    a protocol engine coupled to said packet transmission datapath and said packet reception datapath, and operative to implement a communication protocol;

    a trigger signal generator coupled to said protocol engine, said packet transmission datapath, and said packet reception datapath for receiving indications from said protocol engine, said packet transmission datapath, and said packet reception datapath, configured to generate a trigger signal based on one or more of said indications and operative to indicate a predetermined step within said communication protocol;

    a receive waveform analyzer coupled to said trigger signal generator, configured to couple to said DUT, and operative to perform a signal capture and a signal analysis function on said DUT, wherein a time and a duration of said signal capture are determined based on said trigger signal;

    wherein said trigger signal causes said receive waveform analyzer to perform said signal analysis function, and wherein said wireless traffic, protocol and receive waveform analyzer is configured to perform signal waveform analysis based on a variety of conditions associated with a plurality of wireless communication protocols implemented by said DUT and further to coordinate the signal waveform analysis with the wireless communication protocols, traffic flows, and data packets carried therein; and

    wherein said receive waveform analyzer checks to determine whether said trigger signal has been received from said trigger signal generator and if said trigger signal has not been received, refrains from performing said signal analysis function.

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