Abstract: Systems and methods for managing activities among collocated mobile devices include means for determining a set of tasks to be performed collectively by the two or more collocated mobile devices while collocated and during a period of time in the future, the two or more collocated devices being configured to communicate with one another; means for assigning a first task of the set of tasks to be performed by a first mobile device of the two or more collocated mobile devices; and means for assigning a second task of the set of tasks to be performed by a second mobile device of the two or more collocated mobile devices; wherein the first mobile device and the second mobile device are different from one another with regard to at least one subsystem, and are each capable of performing the first task and the second task.

Abstract: Systems, devices and techniques for processing received QPSK modulated optical signals include sampling the received signal at twice the baud rate, thereby producing samples that are then processed as 9-QAM symbols using a decision directed least squares optimization method. A third stage of channel equalization is filtering performs channel equalization to mitigate linear filtering effects along the transmission link. Data bits are then recovered from the resulting symbol estimates. The received optical signal may also include dual polarized signals for increased bandwidth capacity.

Abstract: A digital system has a dielectric core waveguide that has a longitudinal dielectric core member. The core member has a body portion and a transition region, with a cladding surrounding the dielectric core member. The body portion of the core member has a first dielectric constant. The transition region of the core member has a graduated dielectric constant value that gradually changes from the first dielectric constant value adjacent the body portion to a third dielectric constant.

Abstract: A reconfigurable and redundant electro-optical connector and corresponding method are provided. The connector may include a first plurality of transducers in communication with a first port and a second plurality of transducers in communication with a second port, the first port and the first transducers defining a first channel and the second port and the second transducers defining a second channel. The connector may include a selective combiner to combine the first optical signals and the second optical signals, and a controller in communication with each of the transducers. The controller may transmit at least a first portion of a first datalink on at least the first channel in a first configuration. The controller may redistribute the first portion of the first datalink onto at least the second channel in a second configuration.

Abstract: Methods and systems for constellation shaping of modulation formats in optical communication systems may involve enabling an optical transport network to activate/deactivate constellation shaping on a per channel basis for a given optical path using universal programmable transceivers. Then, constellation shaping may be activated to increase the reach of optical channels by improving signal-to-noise ratio over the optical path.

Abstract: A method for activating a mobile hotspot operation includes detecting, at a mobile device, an event associated with activating a mobile hotspot operation on the mobile device. In response to the detection of the event, a mobile hotspot operation is activated on the mobile device. A connection request to access the mobile device as a mobile hotspot is received from an additional device. In response to the connection request, the access to the additional device is granted.

Abstract: A method and system that provides for execution of a first calibration sequence, such as upon initialization of a system, to establish an operation value, which utilizes an algorithm intended to be exhaustive, and executing a second calibration sequence from time to time, to measure drift in the parameter, and to update the operation value in response to the measured drift. The second calibration sequence utilizes less resources of the communication channel than does the first calibration sequence. In one embodiment, the first calibration sequence for measurement and convergence on the operation value utilizes long calibration patterns, such as codes that are greater than 30 bytes, or pseudorandom bit sequences having lengths of 2N?1 bits, where N is equal to or greater than 7, while the second calibration sequence utilizes short calibration patterns, such as fixed codes less than 16 bytes, and for example as short as 2 bytes long.

Abstract: An optical line terminal (OLT) device and an implementation method thereof, relate to the field of a passive optical network (PON). The OLT device includes an interface unit for receiving data in an Ethernet format sent by a service processing apparatus, performing protocol processing on the received data in the Ethernet format, converting the data after the protocol processing into a transmission signal corresponding to a sending interface, and then transmitting the transmission signal to an external device, as well as receiving message data sent by the external device, converting the message data for protocol processing corresponding to the service processing apparatus, converting the signal after the protocol processing into data in the Ethernet format, and transmitting the data to the service processing apparatus; the service processing apparatus performing service processing on the data transmitted by the interface unit, and transmitting the processed data to the interface unit.

Abstract: A modulating system (14) adapted to generate a multi-level quadrature amplitude modulation, includes: a first number of first optical channels (24_1), each of the first optical channels (24_1) including a modulating device (28), and a second number of first optical channels (24_1) each including a first phase shifting unit capable of introducing a phase shift of ?, and a first number of second optical channels (24_2), each of the second optical channels (24_2) being associated bijectively with one of the first optical channels (24_1), each of the second optical channels (24_2) including the same elements as the first optical channel (24_1) with which the second optical channel (24_2) is associated and a second phase shifting unit able to introduce a phase shift of ?/2.

Abstract: The present disclosure relates to a system having a plurality of electronic devices interconnected by way of dielectric waveguides. In some embodiments, the system has a plurality of electronic devices respectively including a data element and a multiplexing element. The data element has a plurality of electronic device terminals that output and receive data. The multiplexing element provides the data output from the plurality of electronic device terminals to a transceiver element, which generates a wireless signal that transmits the data in a manner that distinctly identifies data from different electronic device terminals. A plurality of dielectric waveguides are disposed at locations between the plurality of electronic devices. The plurality of dielectric waveguides convey the wireless signal between the plurality of electronic devices. By interconnecting electronic devices using dielectric waveguides, disadvantages associates with metal interconnect wires can be mitigated.

Abstract: A safe-mode OTDR method for characterizing an optical fiber link is provided, as well as an OTDR apparatus operating under such a safe mode. The method includes performing OTDR acquisitions along the fiber link using an OTDR apparatus connected at a proximal end of the optical fiber link, and operating under OTDR acquisition conditions that have been deemed safe for a communication device at a distal end of the fiber link. The obtained reflectometric trace, representing a proximal portion of the optical fiber link, is used to determine a partial-link loss value associated with the proximal portion of the fiber link. Modified acquisition conditions that are safe for the communication device are determined based on the partial-link loss value and on loss-related maximum rating parameters for the communication device. The process is repeated using the modified OTDR acquisition conditions until the end of the link has been reached.

Abstract: Systems, device and techniques are disclosed for dynamically retrieving and monitoring geo-fence activity. A meta geo-fence may be identified based on a user device geolocation. The meta geo-fence having a radius that is dynamically generated to include previously defined geo-fences within or touching the meta geo-fence. User device geolocation may be monitored in relation to the defined geo-fences included in the radius of the meta geo-fence. A communication may be sent to the user device when the user device reports that the user device has entered or exited one of the previously defined geo-fences within or touching the radius of the meta geo-fence.

Abstract: The present invention relates to a transceiver element for an optical unit of a photoelectric barrier to such a photoelectric barrier. In particular, a transceiver element comprises at least one optical sender, at least one optical receiver and a control element, wherein said control element comprises a driver unit for driving said at least one optical sender to emit radiation and at least one receiver unit for sensing and evaluating electrical signals generated by said optical receiver.

Abstract: In one embodiment, a mobile terminal (200) transmits behavior data of the mobile terminal (200) to a monitoring server (700). The monitoring server (700) acquires the behavior data of the mobile terminal (200), and performs communication with a subscriber server (400) to update the subscriber data (410) regarding the mobile terminal (200) based on the behavior data. The subscriber server (400) updates a subscriber data (410) based on the communication with the monitoring server (700).

Abstract: A monitoring control system sequentially processing data collected from various data sources to find a possible phenomenon, producing an appropriate action for the found change or phenomenon, and outputting control information for causing a system to perform a notification or predetermined control. The monitoring control system includes a phenomenon detecting section configured to detect a phenomenon leading to a particular result from contiguous data received from data sources serving as data transmission element based on detecting rule definition data previously specifying a change attribute of contiguous time-series data pieces for each phenomenon leading to a particular result, and a determination section configured to extract action information associated with the particular result detected by the phenomenon detecting section to produce an event for a predetermined system based on action definition data previously specifying action information for each particular result.

Abstract: A user may associate a mobile device such as a smartphone with a public device by imitating a movement pattern for a target with a movement pattern of the mobile device. The physical movement of the smartphone may be compared to the movement data for the target. If there is a match, the public device and the mobile device may be associated with one another. The association may allow a user to interact with the public device using the smartphone.

Abstract: Uplink transmission from a mobile device having multiple antennas to a base station having multiple antennas includes transmitting in an open-loop single-user MIMO mode when the mobile device is at high speed, transmitting in a closed-loop single-user MIMO mode when the mobile device is at low speed, and, upon request, transmitting in a multi-user collaborative MIMO mode. The method also includes controlling uplink transmissions in a selected one of the open-loop single-user MIMO, the closed-loop single-user MIMO and the multiuser collaborative MIMO modes. Uplink transmissions from the mobile device may be transmitted using multiple antennas of the mobile device. Upon request, the mobile device may switch to transmitting in multi-user collaborative MIMO mode with a subset of the multiple antennas.

Abstract: Techniques are described for carrier frequency offset (CFO) and channel estimation of orthogonal frequency division multiplexing (OFDM) transmissions over multiple-input multiple-output (MIMO) frequency-selective fading channels. A wireless transmitter forms blocks of symbols by inserting training symbols within two or more blocks of information-bearing symbols. The transmitter applies a hopping code to each of the blocks of symbols to insert a null subcarrier at a different position within each of the blocks of symbols, and a modulator outputs a wireless signal in accordance with the blocks of symbols. A receiver receives the wireless signal and estimates the CFO, and outputs a stream of estimated symbols based on the estimated CFO.

Abstract: A configurable Clos network includes leafs and spines and a switch fabric that connects the leafs and the spines. The switch fabric couples each leaf port of each leaf to at least one spine port of each spine.

Abstract: A method, a codebook, and a Base Station (BS) for precoding are provided. The precoding method includes: obtaining a total uplink power of a User Equipment (UE); if the total uplink power is greater than ¾ of a rated total transmit power of antennas, selecting a codeword from a first codebook with imbalanced power between layers; otherwise, selecting a codeword from the first codebook and a second codebook with balanced power between layers, so as for precoding data to be transmitted according to the selected codeword.