Radarfind Corporation

Nortel Networks Corporation

Teletracking Technologies, Inc.

Keysight Technologies, Inc.

Ixia

Keysight Technologies Singapore (holdings) Pte. Ltd.

Hatteras Networks

Avaya Inc.

Keysight Technologies Singapore (sales) Pte. Ltd.

Overture Networks, Inc.

Keysight Technologies Singapore Pte. Ltd.

Stephen Samuel Jackson

Stanley Fisher

Jennifer G Rasimas

Ottis K Black

Alon Regev

Matthew B Squire

Franco Travostino

Abhijit Lahiri

Diane J Clayton

D Mark Durrett

Kevin J Sheehan

A method for testing wireless communications devices includes controlling a wireless environment simulator for creating a simulated wireless environment around a device under test (DUT). The DUT includes a wireless communications system. The method further includes stimulating the DUT as specified by a test case and recording, using a test monitor, one or more wireless signals transmitted between the DUT and the wireless environment simulator in response to stimulating the DUT. The method further includes generating a test result for the DUT based on comparing performance data from the wireless signals with expected performance specifications for the test case.

Methods, systems and computer readable media for stimulating and testing wireless devices

A method that occurs at a calibration system includes generating a first digital record based on a calibration of the calibration system using a calibration source; providing a copy of the first digital record to a first device under test (DUT); and providing a calibration test signal associated with a calibration of the first DUT, wherein the first DUT uses the first digital record in generating a second digital record based on the calibration of the first DUT.

Methods, systems, and computer readable media for calibration testing and traceability using a distributed ledger

Methods, systems, and computer readable media for testing software defined networks (SDNs). An example system includes a traffic generator configured for generating SDN test traffic for the SDN; a network impairment module configured for applying a plurality of impairment profiles to the SDN test traffic; and a network testing monitor configured for monitoring the SDN test traffic on the SDN. The system includes an SDN performance modeler configured for mapping, for each impairment profile, the impairment profile to SDN performance metric values based on monitoring the SDN test traffic by the network testing monitor in response to applying the impairment profile by the network impairment module.

Methods, systems, and computer readable media for testing software defined networks

An example embodiment provides a method, including: transmitting, from a hub, a request for information stored by at least one receiver, the request for information requesting information related to at least one tag affixed to a moveable object; receiving, at the hub from the at least one receiver, (i) presence information from the at least one tag affixed to a moveable object and (ii) identifying information of the at least one tag identifying the at least one tag and the moveable object corresponding to the at least one tag, wherein the presence information is received by the at least one receiver when the at least one tag is within a defined perimeter of the at least one receiver; receiving, at the hub from at least one receiver, use state information identifying a current use state of the moveable object received from the at least one tag; and storing, within a database associated with the hub, the presence information, identifying information, and use state information for the at least one tag and the moveable object, wherein the storing comprises updating a status of the at least one tag and the moveable object within the database with the presence information, identifying information, and use state information.

Tags for automated location and monitoring of moveable objects and related systems

Methods, systems, and computer readable media for monitoring, adjusting, and utilizing latency associated with accessing distributed computing resources are disclosed. One method includes measuring a first latency associated with accessing a first computing resource located at a first site. The method further includes the measuring a second latency associated with accessing a second computing resource located at a second site different from the first site. The method further includes selectively impairing transmission of packets to or processing of packets by at least one of the first and second computing resources in accordance with a performance, network security, or diagnostic goal.

Methods, systems, and computer readable media for monitoring, adjusting, and utilizing latency associated with accessing distributed computing resources

An example embodiment provides a method, including: receiving, at an identification tag associated with a moveable object and in a sleep state, a wake-up signal; waking, responsive to the wake-up signal, the identification tag; listening, while the identification tag is awake and at the identification tag, for a signal from at least one receiver, wherein the signal requests information regarding the identification tag; responsive to not receiving a signal, returning the identification tag to a sleep state after expiration of a back-off timer having a predetermined timer duration; and responsive to receiving a signal from at least one receiver, transmitting, to the least one receiver from an identification tag associated with a moveable object, information related to an environment surrounding the identification tag and information related to a location of the identification tag.

A method for network tapping and packet brokering in wireless networks includes tapping a signal in a wireless network and determining whether the signal is a valid signal according to a wireless network protocol. In response to determining that the signal is a valid signal according to the wireless network protocol, the signal is demodulated into a sequence of bits arranged according to the wireless network protocol. In response to determining that the signal is not a valid signal according to the wireless network protocol, an indication that the signal is not a valid signal according to the wireless network protocol is generated. A packet in a format compatible with a network tapping and packet brokering system is generated. At least some of the bits or the indication is inserted in the packet. The packet is transmitted to the network tapping and packet brokering system.

Methods, systems and computer readable media for network tapping and packet brokering in wireless networks

Methods, systems, and computer readable media for monitoring and/or testing network communications are disclosed. A method for monitoring network communications includes receiving packets from a network connected device, determining features associated with either the network connected device or a communications network to which the network connected device is connected by actively or passively monitoring or testing the packets, and automatically switching between passively monitoring or testing the packets and actively monitoring or testing the packets in response to receiving a packet carrying instructions.

Methods, systems, and computer readable media for monitoring and/or testing network communications

An example embodiment provides a method, including: transmitting, to a rotatable tag affixed to a moveable object and after the rotatable tag wakes from a sleep mode, a request for presence information from at least one receiver, wherein the presence information comprises a request to determine if the rotatable tag is within a perimeter with respect to the at least one receiver; the rotatable tag comprising a tag having more than one indicator associated with a use state of the moveable object and the rotatable tag providing a visual signal representing a current use state of the moveable object; receiving, at the at least one receiver from the rotatable tag, identification information associated with the moveable object, wherein the identification information comprises information identifying the moveable object and the requested presence information; and receiving, from the rotatable tag, information identifying the current use state at the at least one receiver.

An example embodiment provides a method, including: receiving, at a rotatable tag affixed to a moveable object, a signal to wake the rotatable tag affixed to a moveable object, wherein the rotatable tag comprises a tag having more than one indicator associated with a use state of a moveable object, wherein a current use state of the moveable object is indicated by a visual indication on the rotatable tag and transmitted to at least one receiver; providing, from the rotatable tag affixed to a moveable object, identification information associated with the moveable object; transmitting, from the rotatable tag affixed to a moveable object, location data to the at least one receiver; and transmitting, from the rotatable tag affixed to a moveable object, use state information derived from the current use state of the rotatable tag and is associated with the moveable object. Related systems are also provided herein.

An example embodiment provides a method, including: receiving, at a tag affixed to a moveable object, a signal to wake the tag affixed to a moveable object; receiving, at the tag affixed to a moveable object, a request from at least one receiver for presence information associated with the moveable object; providing, from the tag affixed to a moveable object, identification information associated with the moveable object; transmitting, from the tag affixed to a moveable object, location data to the at least one receiver; transmitting, from the tag affixed to a moveable object, use state information associated with the moveable object; and returning the tag affixed to a moveable object to a sleep state. Related systems are also provided herein.

The subject matter described herein relates to method, systems, and computer readable media for detecting physical link intrusions. A method for detecting physical link intrusions includes monitoring a link delay signature associated with a physical link based on one-way link delay measurements obtained using at least one network tap. The method also includes determining whether a change in the link delay signature has met or exceeded a threshold value. The method further includes in response to determining that the change in the link delay signature has met or exceeded the threshold value, determining that a physical link intrusion has occurred.

Methods, systems, and computer readable media for detecting physical link intrusions

Methods, systems, and computer readable media for testing wireless devices is disclosed. In some examples, a system for testing wireless devices in wireless environments comprises a test server and a wireless device tester implemented on the test server. The test server includes at least one processor and memory storing, for each wireless device of different types of wireless devices, a wireless emulation waveform received from the wireless device during operation of the wireless device. The wireless device tester is configured for receiving emulation requests specifying wireless devices and wireless environments for testing. The wireless device tester is configured for transmitting, for each request, a responsive wireless emulation waveform to a wireless device emulator physically located in the specified wireless environment and determining a performance metric for the wireless device within the specified wireless environment.

Methods, systems, and computer readable media for testing wireless devices in wireless environments

An example embodiment provides a method, including: communicating, using a plurality of receivers placed throughout a hospital, with a tag affixed to a moveable object; receiving, via one or more of the plurality of receivers, location data of the tag affixed to the movable object; identifying, using data received from the tag, the movable object; determining, based on the one or more of the plurality of receivers transmitting the location data, a location within the hospital of the movable object; associating, using location information of a database, a use state for the movable object based on the location of the movable object within the hospital, the database storing the location information associated with placements of the plurality of receivers and a use state for a movable object associated with the placements; and updating, using a processor, a use state for the movable object. Related methods and products are also described and/or claimed herein.

A wireless access point or other transmitter can be configured to inject a supplemental signal into a data modulated carrier signal. In some examples, a transmitter system includes an antenna, a primary modulator, and a supplemental modulator. The primary modulator receives a baseband data signal and a carrier signal and outputting to the antenna a data modulated carrier signal according to a communications protocol. The supplemental modulator injects a supplemental signal into the data modulated carrier signal by distorting the data modulated carrier signal within an error bound of the communications protocol. A corresponding receiving system includes an antenna and a supplemental signal detector for detecting the supplemental signal by detecting the distortion within the data modulated carrier signal.

Growing community of inventors

Chapel Hill, NC, United States of America

Stephen Samuel Jackson