Protocol test device and method for operating a protocol test device

• US 10,567,264 B2
• Filed: 04/06/2017
• Issued: 02/18/2020
• Est. Priority Date: 04/06/2017
• Status: Active Grant

• Current Assignee: Rohde & Schwarz GmbH & Company KG
• Original Assignee: Rohde & Schwarz GmbH & Company KG
• Inventors: Tyrrell, Alexander, Rossetto, Francesco, Powell, William
• Primary Examiner(s): Nowlin, Eric
• Application Number:
  US15/481,322
• Publication Number:
  US 20180295046A1
• Time in Patent Office: 1,048 Days
• CPC Class Codes: H04L 43/18 Protocol analysers
• CPC Class Codes: H04L 43/50 Testing arrangements
• CPC Class Codes: H04W 24/06 Testing, supervising or monitoring using simulated traffic

Abstract

A protocol test device for testing protocol compliance of a wireless device under test comprises a wireless interface for transmitting an outgoing RF signal to the wireless device under test and/or for receiving an incoming RF signal from the wireless device under test, a processing unit for generating messages for the outgoing RF signal based on a predefined protocol and for processing messages in the incoming RF signal based on the predefined protocol, a message log memory for storing the generated messages and the received messages, and a summary message generation unit that generates a summary log message and stores the summary log message in the message log memory, wherein the summary log message comprises information about at least one of the generated messages and/or the received messages and repetitions of the respective generated message and/or the respective received message.

Claims

1. A protocol test device for testing protocol compliance of a wireless device under test, the protocol test device comprising:

a RF interface for transmitting an outgoing RF signal to the wireless device under test or for receiving an incoming RF signal from the wireless device under test,

a processing unit for generating messages for the outgoing RF signal based on a predefined protocol and for processing messages in the incoming RF signal based on the predefined protocol,

a message log memory for storing the generated messages and the received messages,

a summary message generation unit that generates a summary log message and stores the summary log message in the message log memory, wherein the summary log message comprises information about the generated messages and repetitions of the respective generated message, or information about the received messages and repetitions of the respective received message, wherein the information that the summary message generation unit includes in the summary log message about the generated messages and the repetitions of the respective generated messages, or the received messages and the repetitions of the respective received messages, comprises the number of repetitions of the respective message, wherein the number of repetitions is predefined by a communication standard, and

a protocol analyzer that analyzes the summary log message that detects non-conforming data transmissions without parsing the entire message log memory for repetitions of single messages.

2. The protocol test device according to claim 1, wherein the summary message generation unit comprises a message buffer for storing the information about predetermined types of messages and the repetitions of the messages.

3. The protocol test device according to claim 1, wherein the information that the summary message generation unit includes in the summary log message about the generated messages and the repetitions of the respective generated messages, or the received messages and the repetitions of the respective received messages comprises frame numbers or sub-frame numbers of the respective message and its repetitions.

4. The protocol test device according to claim 1, wherein the information that the summary message generation unit includes in the summary log message about the generated messages and the repetitions of the respective generated messages, or the received messages and the repetitions of the respective received messages comprises pointers to the first occurrence or the repetitions of the respective message in the message log memory.

5. The protocol test device according to claim 1, comprising a display device that displays content of the message log memory and comprises a user interface for navigating the message log memory.

6. The protocol test device according to claim 1, wherein the protocol analyzer adds respective conformity markers to the summary log message.

7. The protocol test device according to claim 6, wherein the protocol analyzer is coupled to the processing unit and receives from the processing unit configuration parameters for the communication with the wireless device under test, wherein the protocol analyzer analyzes the summary log message according to the received parameters.

8. The protocol test device according to claim 6, wherein the conformity markers comprise a binary flag or wherein the conformity markers comprise visual indications.

9. The protocol test device according to claim 1, wherein the summary message generation unit comprises at least one interface to respective layers of a communication stack implemented in the processing unit, the interfaces allowing the summary message generation unit to intercept the generated messages or the received messages.

10. A method for operating a protocol test device for testing protocol compliance of a wireless device under test, this method comprising:

transmitting an outgoing RF signal to the wireless device under test,

receiving an incoming RF signal from the wireless device under test,

generating messages for the outgoing RF signal based on a predefined protocol,

processing messages in the incoming RF signal based on the predefined protocol,

storing the generated messages and the received messages in a message log,

generating and storing a summary log message, wherein the summary log message comprises information about the generated messages and repetitions of the respective generated message, or information about the received messages and repetitions of the respective received message, wherein the information included in the summary log message about the generated messages and the repetitions of the respective generated messages, or the received messages and the repetitions of the respective received messages, comprises the number of repetitions of the respective message, wherein the number of repetitions is predefined by a communication standard, and

detecting non-conforming data transmissions without parsing the entire message log for repetitions of single messages.

11. The method according to claim 10, wherein generating comprises storing the information about predetermined types of messages and the repetitions of the messages in a temporary buffer prior to storing the summary log message.

12. The method according to claim 10, wherein the information included in the summary log message about the generated messages and the repetitions of the respective generated messages, or the received messages and the repetitions of the respective received messages comprises frame numbers or sub-frame numbers of the respective message and its repetitions.

13. The method according to claim 10, wherein the information included in the summary log message about the generated messages and the repetitions of the respective generated messages, or the received messages and the repetitions of the respective received messages comprises pointers to the first occurrence or the repetitions of the respective message in the message log.

14. The method according to claim 10, comprising displaying content of the message log and receiving a user input for navigating the message log.

15. The method according to claim 10, comprising adding respective conformity markers to the summary log message.

16. The method according to claim 15, wherein analyzing comprises receiving configuration parameters for the communication with the wireless device under test, and analyzing the summary log message according to the received parameters.

17. The method according to claim 15, wherein the conformity markers comprise a binary flag or wherein the conformity markers comprise visual indications.

18. The method according to claim 10, wherein generating the summary log message comprises intercepting the generated messages or the received messages from layers of a communication stack implemented in the protocol test device.