Abstract: Wi-Fi-based location determination methods may include receiving location information and/or identifier information regarding a Wi-Fi hot spot, at a database. The methods may include transmitting the location information and/or identifier information regarding the Wi-Fi hot spot, from the database to a positioning receiver. Related systems are also described.

Abstract: An automatic, stand-alone, hand-held ultrasound blood-vessel examination device (100) requires a reduced number of transducer elements (126) and presents a simplified user interface (136-140), without the need for displaying an image of any of the vessels. The probe, in one embodiment, acquires and examines a volume of interest (106), searches for a target vessel, tests the vessel for normality of blood flow, and reports the diagnosis, all automatically and without need for user intervention. In another embodiment, the probe finds a body vessel (108-112) in a volume, and extracts a clinical Doppler parameter, all automatically and without need for user intervention.

Abstract: Compositions and methods are described for detecting enzyme activity in a live organism (e.g., animal) are provided.

Abstract: A method of communicating data between a first transceiver and any of a plurality of second transceivers, wherein areas serviced by each of the plurality of second transceivers either overlap or are adjacent. The method comprises operating the first transceiver and the plurality of second transceivers in an overlapping frequency range. Each of the plurality of second transceivers operates in a time period different from a time period of another of the plurality of second transceivers.

Abstract: A system (10) and method (50 or 70) of dynamic allocation of spectrum for a communication device where a UHF band is currently unused for licensed television broadcasting involves determining (51) a location of a user device, determining (52) which UHF television broadcast channels are available for use by the user device and determining (53) a maximum allowed transmission power for a given channel based on signal strength for the given channel and on adjacent channels before transmitting (54) the maximum allowed transmission power and location by the user device to a remote server. The method can receive (55) polygon endpoints from a television broadcast defining the location of usable reception of the television broadcast.

Abstract: A signal strength that is associated with a first wireless communications channel is detected. Electromagnetic energy is transmitted over the first wireless communications channel in response to the signal strength being sufficiently weak. A determination is made whether a handoff should be made to a second wireless communications channel having a signal that is weaker than a signal of the first wireless communications channel. Related systems and methods are described.

Abstract: A SAS expander for use in a SAS topology includes a receiving portion and a controller. The receiving portion is configured to receive a remote RAID instruction from a root host bus adapter. The controller is configured to execute the instruction to manage a RAID volume in accordance with a RAID management task specified by the instruction.

Abstract: An enhanced-range beacon signal transmitted from a wireless terminal in a frequency band used by the wireless OFDM communications system for OFDM communications. The beacon may be received at each of a plurality of base stations of the wireless OFDM communications system. A location of the wireless terminal may be determined responsive to reception of the beacon signal at the plurality of base stations. In some embodiments, the beacon signal includes a narrowband beacon signal, which may be centered at a frequency offset with respect to a set of subcarriers used in the wireless OFDM communications system, for example, between adjacent subcarriers of the wireless OFDM system and/or in a guard band of the OFDM frequency band.

Abstract: Multivalent fluorescent probes and methods of using these multivalent fluorescent probes for in vitro and in vivo imaging are described.

Abstract: A system (10) and method (50 or 70) of dynamic allocation of spectrum for a communication device where a UHF band is currently unused for licensed television broadcasting involves determining (51) a location of a user device, determining (52) which UHF television broadcast channels are available for use by the user device and determining (53) a maximum allowed transmission power for a given channel based on signal strength for the given channel and on adjacent channels before transmitting (54) the maximum allowed transmission power and location by the user device to a remote server. The method can receive (55) polygon endpoints from a television broadcast defining the location of usable reception of the television broadcast.

Abstract: An apparatus for communicating between a mobile device, and a plurality of transceivers. The apparatus includes a first transceiver which transmits to the mobile device on any one of a plurality of channels. The apparatus further includes a second transceiver which transmits to the mobile device on any one of the plurality of channels.

Abstract: Positioning systems and methods comprise a network of transmitters that broadcast positioning signals comprising ranging signals and positioning system information. A ranging signal comprises information used to measure a distance to a transmitter broadcasting the ranging signal. A reference sensor array comprising at least one reference sensor unit is positioned at a known location. A remote receiver includes an atmospheric sensor collecting atmospheric data at a position of the remote receiver. A positioning application is coupled to the remote receiver and generates a reference pressure estimate at the position of the remote receiver using the atmospheric and reference data from the reference sensor array. The positioning application computes the position of the remote receiver using the reference pressure estimate and information derived from at least one of the positioning signals and satellite signals that are signals of a satellite-based positioning system. The position includes an elevation.

Abstract: Terrestrial-based positioning beacon networks may include first and second terrestrial-based positioning beacons that are configured to simultaneously transmit signals to a terrestrial receiver. The first terrestrial-based positioning beacon may be configured to modify its transmissions to the terrestrial receiver in response to an identification of potential interference with the transmissions from the first terrestrial-based positioning beacon or the second terrestrial-based positioning beacon to the terrestrial receiver. Related methods, beacons, and receivers are also described.

Abstract: A system (10) and method (50) of dynamic allocation of spectrum for a communication device involves receiving (51) a user channel map (UCM) on a control channel that is outside the band of interest. The UCM can include at least boundary location information for one or more channel resources. The method can determine (52) at least an approximate location for the communication device, compare (56) the approximate location with the boundary location information, and determine (57) which channels can avoid co-channel and adjacent channel interference with licensed users and other unlicensed users based on the comparison. The method can relax communication parameters for the one or more channel resources if no licensed user signals are found in the user channel map, and tightening the communication parameters if co-channel, adjacent channel, or other interference generating channel use is found within the user channel map.

Abstract: A system (10) and method (50 or 70) of dynamic allocation of spectrum for a communication device where a UHF band is currently unused for licensed television broadcasting involves determining (51) a location of a user device using GPS or other signals (such as television broadcast signals) received at the user device using signal strength or time distance of arrival of those signals. The method can determine (52) which UHF television broadcast channels are available for use by the user device and determine (53) a maximum allowed transmission power for a given channel based on signal strength for the given channel and on adjacent channels before transmitting (54) the maximum allowed transmission power and location by the user device to a remote server for sharing information. The method can receive (55) polygon endpoints from a television broadcast defining the location of usable reception of the television broadcast.

Abstract: An apparatus for communicating between a mobile device, and a plurality of transceivers. The apparatus includes a first transceiver which transmits to the mobile device on any one of a plurality of channels. The apparatus further includes a second transceiver which transmits to the mobile device on any one of the plurality of channels.

Abstract: Computer-implemented systems and methods for determining promotion prices for a plurality of items. A system and method can be configured to receive electronic data about items for a promotion event and to receive electronic data about vehicles for a promotion event. An optimizer, which is implemented on a data processor, includes or has access to an optimization formulation for determining optimal promotion prices for the items and for determining assignments of the vehicles to the items for promoting the items during the promotion event.

Abstract: A system and method of dynamic allocation of spectrum for a communication device involves receiving a user channel map (UCM) on a control channel that is outside the band of interest. The UCM can include at least boundary location information for one or more channel resources within a UHF band and communication parameters. The method can determine at least an approximate location for the communication device, compare the approximate location with the boundary location information, and determine which channels can avoid co-channel and adjacent channel interference with licensed users and other unlicensed users based on the comparison, boundary location information, and the communication parameters. The UCM can further include communication parameters such as maximum allowable transmit power, duty cycle, and in use information by other unlicensed and licensed users. The boundary location information can include polygon endpoint calculations and associated technical communication parameters.

Abstract: A base station selectively communicates with terminals using first and second separately allocated frequency bands, e.g., separate cellular/PCS bands, of a government spectrum allocation based on propagation conditions between the base station and the terminals. The base station may transmit in the first frequency band and receive in the second frequency band during a first time slot and transmit in the second frequency band and receive in the first frequency band during a second time slot. The base station may transmit to a terminal in the first frequency band while receiving from the terminal in the second frequency band during the first time slot and may transmit to the first terminal in the second frequency band while receiving from the first terminal in the first frequency band during the second time slot.

Abstract: A method and System for communicating between a mobile device, and first and second transceivers are described. The second transceiver is positioned in an area covered by the first transceiver. The first transceiver and the mobile device can exchange data on at least one of a plurality of channels. The mobile device transmits a first signal to the first transceiver on the at least one of a plurality of channels. The second transceiver transmits a second signal to the mobile device on a channel outside of the plurality of channels.