Abstract:
Provided are methods and systems of managing a handoff in a multimedia communication network. Embodiments include estimating the voice quality of a communication route in the network. The voice quality may be estimated by using a total voice quality metric involving subtracting various impairments to the voice signal. Impairments may result from the type of vocoder in a communication route, the error or loss associated with RF links and network links, and delays in the communication route. After subtracting the impairments to obtain the total voice quality metric for the communication route, the total voice quality metric may be compared with a threshold and/or other total voice quality metrics of other communication routes to determine whether and when a handoff should be made.
Abstract:
Provided are methods and systems of managing vertical handoffs in a wireless communication network. Embodiments include analyzing wireless device usage to determine usage patterns, which may include locations and times at which the wireless device is typically accessing the network. The network may recognize points in the usage patterns at which signal quality parameters are typically reduced. Such reductions in signal quality parameters may lead to inefficient vertical handoffs. The network may decrease adverse effects of inefficient vertical handoffs by reducing ping ponging, selecting links between wireless devices and network nodes, or indicating to a user of the wireless device that delays and/or data loss may occur.
Abstract:
The present disclosure relates to a system includes a Luneburg lens antenna system configured to selectively provide wireless communication to a plurality of stations, and one or more sensors configured to collect data related to an occupancy status of each of the plurality of stations. The system also includes a controller coupled to the Luneburg lens antenna system and the one or more sensors, wherein the controller is configured to determine the occupancy status of each of the plurality of stations based on the data collected by the one or more sensors, and the controller is further configured to change operation of the Luneburg lens antenna system based on the occupancy status of each of the plurality of stations.
Abstract:
A system includes a control system. The control system includes a processor configured to receive a first signal from a light source within an industrial facility. The first signal includes a unique identification code configured to indicate at least a partial identity of a human resource within the industrial facility. The processor is configured to determine a proximity of the human resource with respect to the light source based at least in part on a received signal strength indicator (RSSI) of the first signal, and to generate an indication of a location of the human resource within the industrial facility based on the determined proximity of the human resource to the light source.
Abstract:
A method and system for geolocation using a street light system having transponding technology. A predetermined band of radio frequencies employing spread spectrum technology is used to identify locations relative to an individual street light.
Abstract:
Provided are methods and systems of managing vertical handoffs in a wireless communication network. Embodiments include analyzing wireless device usage to determine usage patterns, which may include locations and times at which the wireless device is typically accessing the network. The network may recognize points in the usage patterns at which signal quality parameters are typically reduced. Such reductions in signal quality parameters may lead to inefficient vertical handoffs. The network may decrease adverse effects of inefficient vertical handoffs by reducing ping ponging, selecting links between wireless devices and network nodes, or indicating to a user of the wireless device that delays and/or data loss may occur.
Abstract:
Techniques are provided for increasing spectral efficiency over data channels in a storage or communication system. In some embodiments, data may be encoded and transmitted over multiple channels. The transmitted data from the multiple channels may be considered together as a channel bundle, thereby increasing the edge transitions of the group of signals to improve clock recovery and reduce coding constraints. In some embodiments, the channel bit size is reduced to maximize data rates based on the reduced coding constraints. Furthermore, the channel bundle has only one channel with timing markers, so that a receiver may receive information from the channel bundle and recover clocking based on the timing markers in the one channel.
Abstract:
A street lighting fixture and street lamp used in street lighting containing an accelerometer that is used to detect and characterize acceleration events on a street lighting fixture. The accelerometer readings may be combined with GPS technology to determine a relocation of the street lighting fixture.
Abstract:
Systems and methods for communicating ultrasound probe location and image information are provided. One system includes an ultrasound device coupled with an ultrasound probe and configured to acquire ultrasound images of a subject. The ultrasound imaging system also includes at least one camera configured to acquire (i) scene information including ultrasound imagery of the ultrasound probe with the subject during an image scan and (ii) ancillary probe data. The ultrasound imaging system further includes a processor configured to receive the ultrasound images and the ancillary probe data and a multiplexing unit configured to receive (i) the ultrasound images and ancillary probe data from the processor and (ii) the scene information from the camera, wherein the multiplexing unit is further configured to associate in time the ultrasound images, ancillary probe data and scene information. The ultrasound imaging system additionally includes a communication device.
Abstract:
A system and method for a lighting control system to control street lighting fixtures using modified geometric harmonic modulation for communications over a powerline. At least some of the lighting fixtures have another communications capability that enables RF communications. The communications may by messages be sent to the lighting fixtures to read RF enabled meters.