Symbol Technologies, LLC

View, Inc.

General Electric Company

Zih Corporation

Mahender R Vangati

Ajay Malik

Darrel Q Pham

Vinh-Phuong Tra Le

Michael Edgar Larson

Daniel Dah Tai

Edward W Geiger

David Tan Nguyen

Richard Lawerance Woodburn

Matthew James Cannell

Yu Wan

Sunalini Sankhavaram

Nicholas J Ford

Sudhakar Reddy

Christopher Wuest

Guy Solimine

A messaging system for exchanging messages between nodes in a network via a broker that uses a publish-subscribe message protocol, which nodes have object identifications (IDs). Messages between the nodes are routed using the object IDs of the nodes. Secure communication is provided using authentication according to digital certificates being used as first and second tiers by a commissioning broker and a data broker, respectively, in which the second tier certificate used by the data broker has a shorter lived expiration time.

Access and messaging in a multi client network

Methods, systems and apparatus for detecting object location and generating alerts are disclosed herein. An example disclosed method includes determining an assigned area for an object being handled by a loader; detecting a first location of the loader; determining whether the first location corresponds to the assigned area for the object; and in response to the first location not corresponding to the assigned area for the object, generating a first output indicative of a difference between the first location and the assigned area for the object.

Methods, systems and apparatus for detecting object location and generating alerts

Beacon devices and associated components, methods, etc., are disclosed. An example beacon device includes a memory, a communication interface, and a processor to execute instructions with respect to configuration information to control the communication interface and operation of the processor based on a mode in which the beacon device is set to operate, the processor to dynamically transition among a plurality of modes based on an operating condition of the beacon device and a communication received from at least one of the receiver or the controller. In certain examples, the plurality of modes includes a configuration mode and a broadcast mode. When in the configuration mode, the operation of the processor is to process the communication received from the controller to adjust the configuration information. When in the broadcast mode, the operation of the processor is to generate a beacon signal to transmit to at least one of the receiver or the controller via the communication interface.

Healthcare beacon device configuration systems and methods

A method for optimizing RF coverage includes dividing a floor plan according to a plurality of grids. Radio frequency coverage for each of the plurality of grids is calculated to render a plurality of coverages. First data representative of the plurality of coverage grids is provided to a client. Second data representative of an incremental change in radio frequency coverage for a first grid of the plurality of grids is provided to the client.

Optimization of displayed RF coverage

A method for displaying RF coverage information includes providing formatting data for displaying the radio frequency coverage information on a client. The formatting data is executed on the client. First radio frequency coverage raw data is provided to the client. The first radio frequency coverage raw data is utilized by the formatting data to construct an overall radio frequency coverage representation of a site. Subject to a subsequent request from the client, second radio frequency coverage raw data representative of radio frequency coverage is provided for a portion of the site. The second radio frequency coverage raw data is utilized by the formatting data on a supplemental basis.

Optimized RF coverage using AJAX and SVG

Methods and systems are provided for determining the location of a first wireless device (e.g., a mobile unit) within a wireless network comprising a plurality of second wireless devices (e.g., access points). The method includes identifying an overlap area corresponding to the intersection of RF ranges for the one or more second wireless devices then computing a set of signal strength values, each associated with a measure of RF signal strength (e.g., RSSI) received by the plurality of second wireless devices from the first wireless device. A decision metric is evaluated for a plurality of locations within the overlap area based on the set of signal strength values. The location of the first wireless device is determined by selecting, from the plurality of locations, a location having the optimum value of the decision metric within the overlap area. The decision metric may utilize a minimum mean square error (MMSE) calculation. A weighting function may be used to remove redundant or weak signal strength values. The systems and methods are applicable, for example, to networks operating in accordance with 802.11, RFID, WiMax, WAN, Bluetooth, Zigbee, UWB, and the like.

Methods and apparatus for locationing in a wireless network using statistical weighting

Methods and systems are provided for determining the location of a first wireless device (e.g., a mobile unit) within a wireless network comprising a second wireless device (e.g., an access point). The method includes determining a signal strength contour associated with RF communication between the access point and the mobile unit, and adding a correction factor to the signal strength contour to produce a corrected signal strength contour, wherein the correction factor includes the sums of the differences between the transmit power and the antenna gain associated with the mobile unit and the access point. In an alternate scheme involving stored fingerprint data, a correction factor is introduced based on the differences between antenna gains and transmit power associated with the mobile unit under consideration and the mobile unit used for generating the fingerprint data. The systems and methods disclosed herein are applicable, for example, to networks operating in accordance with 802.11, RFID, WiMax, WAN, Bluetooth, Zigbee, UWB, and the like.

Growing community of inventors

San Jose, CA, United States of America

Mahender R Vangati