Cisco Technology, Inc.

Plume Design, Inc.

Igal Gutkin

Brian Donald Hart

Neil Robert Diener

David Stuart Kloper

Gary L Sugar

Sandeep Shetty

Balaji Rengarajan

Christopher Sean Johnson

Thomas Paul

Sanjeev Hemantkumar Desai

Saurabh Bhasin

Sanjeev Hemantkumar Desal

A method of evaluating an application performance metric of a Wi-Fi device that is running an application and that is receiving application data from another Wi-Fi device transmitting the application data is disclosed. An indication of a delay in one or more of a plurality of access category queues at the Wi-Fi device transmitting the application data is received. The delay over time is characterized, wherein the characterization of the delay over time includes a statistical measure of the delay determined based on the received indication of the delay in the one or more of the plurality of access category queues. An application quality-of-experience (QoE) metric is determined based on a mapping from the characterization of the delay over time to an application performance.

Application quality of experience metric

At a plurality of first devices, wireless transmissions are received at different locations in a region where multiple target devices may be emitting. Identifier data associated with reception of emissions from target devices at multiple first devices is generated. Similar identifier data associated with received emissions at multiple first devices are grouped together into a cluster record that potentially represents the same target device detected by multiple first devices. Data is stored that represents a plurality of cluster records from identifier data associated with received emissions made over time by multiple first devices. The cluster records are analyzed over time to correlate detections of target devices across multiple first devices.

Correlating multiple detections of wireless devices without a unique identifier

In an example embodiment, an apparatus selects radio channels based on persistent interference device information. The apparatus comprises a wireless transceiver operable to communicate over a plurality of channels and channel selection logic in communication with the wireless transceiver and operable to select a channel for the wireless transceiver. The channel selection logic is operable to acquire data representative of intensity, duration and rate of occurrence for at least one persistent interference device detected by the wireless transceiver operating on at least one of the plurality of channels. The channel selection logic is operable to select a channel for the wireless transceiver based on the data representative of intensity, duration and rate of occurrence for the at least one persistent interference device.

Utilizing persistent interference information for radio channel selection

A system for measuring air quality in wireless networks. In particular implementations, a method includes computing an interference severity level for a plurality of interference sources detected at an access point; aggregating one or more of the computed interference severity levels relative to the access point; and computing an air quality metric for the access point, wherein the air quality metric based at least in part on an equation: 1&#x2014;aggregated interference severity level.

Measurement of air quality in wireless networks

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Redwood City, CA, United States of America

Igal Gutkin