Octoscope Inc.

Spirent Communications, Inc.

Ron Cook

Andrew Stephen McGarry

Michael Haley

Fanny Mlinarsky

James Sozanski

A wireless link monitor is configured to operate as an active client that can send and/or receive wireless traffic to and/or from wireless devices-under-test (DUTs) in the network. When the wireless link monitor operates as an active client, the DUTs can send respective wireless traffic to the wireless link monitor. This ensures that the wireless link monitor receives the wireless traffic even when the DUTs transmit their wireless signals narrowly (e.g., in adaptive beamforming technologies).

Multi-functional wireless link monitor

A computer-implemented method for synchronizing wireless testing devices includes (a) in a protocol analyzer located in an RF-isolated test chamber, capturing first network packets transmitted to or from a wireless device-under-test (DUT) to generate protocol test data, (b) in the protocol analyzer, determining if any of the first network packets satisfy a trigger rule, (c) in the protocol analyzer, generating a trigger output signal when the trigger rule is satisfied, (d) sending the trigger output signal from the protocol analyzer to an RF analyzer in electrical communication with the DUT, (e) capturing second network packets with the RF analyzer based on the trigger output signal to generate RF test data, the second network packets transmitted to or from the DUT, and (f) in the protocol analyzer, time-aligning the first and second network packets in the protocol test data and the RF test data, respectively.

System and method for synchronizing protocol and RF analyzers during wireless testing

Systems and methods for design and testing of RF components are described. One or more RF isolation chambers are used to house MU-MIMO capable devices under test, including wireless access points and client devices. Spatial and angular positioning of the antennas within a chamber and controlled power of the signals into each antenna via RF combiners and RF attenuators to achieve a controllable apparent/virtual angular spread among the respective client device signals is described.

Controllable multi-user MIMO testbed

The present disclosure is directed to systems and methods for operating, designing, testing and verifying the performance of wireless communication devices. Specifically, the present systems and methods can passively attenuate unwanted electromagnetic interference (EMI) without degrading signal quality of predetermined frequency using a novel versatile module including a RF absorbing material in a composite medium surrounding the conducting signal lines. Utilizing varying permeability media, the present invention offer a robust platform to eliminate unwanted noise while maintaining a desirable control and power interfaces used for testing of wireless communication systems.

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Groton, MA, United States of America

Ron Cook