Abstract:
PROBLEM TO BE SOLVED: To provide methods and apparatuses to obtain an ordered set of satellite positioning system (SPS) satellites, in view of a mobile SPS receiver, via one- or two-way communication with the mobile SPS receiver.SOLUTION: The mobile SPS receiver receives an ordered set of SPS satellites from a cellular transmission site. The ordered set of satellites are those in view of the mobile SPS receiver at a given time such that the mobile SPS receiver may search for the SPS satellites according to an order of the ordered set of SPS satellites. The order of the ordered set may be obtained by various methods one of which is by minimizing the geometric dilution of precision. Health data may be included in the transmission.
Abstract:
PROBLEM TO BE SOLVED: To provide a system and method for providing a multimodal list of transceiver devices to a remote terminal.SOLUTION: A positioning unit determines a location of a remote terminal (608). A processor identifies transceivers for communicating in at least a first communication mode and a second communication mode according to the location of the remote terminal (612). The processor retrieves information about the identified transceivers from a database and generates a multimodal list (618). The processor causes a transceiver to transmit the multimodal list of transceiver devices to the remote terminal using a communication mode of the remote terminal (620).
Abstract:
PROBLEM TO BE SOLVED: To collect and/or process sensor data from multiple sensors such as acceleration, angular-velocity, and magnetic-field sensors.SOLUTION: A multi-sensor measurement processing unit 100 includes a processor 120, one or more sensors 130, 140 connected to the processor, and a wireless interface unit 110 which is connected to the processor and receives measurement information from external sensors. The processor is used for evaluating one or more navigation states based on the measurement information.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and apparatus for determining a position of a base station in a wireless communication network that includes a mobile station in communication with base stations.SOLUTION: A BTS calibration server is network-connected with base stations. A BTS calibration program is programmed into a group of mobile stations that have position location capabilities. Using the BTS calibration program, calibration information may be requested by the BTS calibration server, or a session may be initiated by the mobile station. The BTS calibration program also provides privacy features that allow a user of the mobile station to prevent it from being used for specifying base station location. If authorized, the BTS calibration program determines the position of the mobile station (54), and provides calibration information, such as position and base station phase measurements, to the server (56). The calibration information may be used to calibrate the base station almanac.
Abstract:
PROBLEM TO BE SOLVED: To provide a methods and an apparatus for controlling distribution of location information. SOLUTION: A mobile system communicates its location information to a server system and sends permission criteria defining which other mobile systems are allowed to access its location. In the case where the mobile system does not provide its location, the server determines the location using the other position information. The server system receives a request from another mobile system for the location and sends the location to other mobile systems in accordance with the permission criteria. If no permission criterion has been sent, the server system queries the mobile system for the permission criteria. If no permission criterion is sent by the mobile system, or if the permission criterion denies the request, the server system can, alternately, not reply to the request or reply with an error message. The permission criteria can include additional access limitations such as dates or times during which access is permitted or denied, and geographic areas in which access is permitted or denied. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide methods and apparatuses for position determination and other operations.SOLUTION: A mobile station 407 uses radio signals from a plurality of wireless networks (e.g., with different air interfaces and/or operated by different service providers) for position determination. Mobile stations are used to harvest statistical data about wireless access points (e.g., the locations of mobile stations that have received signals from the wireless access points, such as from cellular base stations, wireless local area network access points, repeaters for positioning signals, or other wireless communication transmitters) and to derive location information (e.g., positions and coverage areas of the wireless access points) for the wireless networks from the collected statistical data.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and a device for removing an influence of mutual correlation regarding calculation of a position of a satellite positioning system.SOLUTION: An SPS signal is received from an SPS satellite in a visual field to determine whether or not a first measurement value is removed from a set of measurement values to be used for releasing a position of a mobile SPS receiver for a first SPS satellite shown as a sound satellite. This determination includes a step of testing whether or not the first measurement value is derived from the SPS signal. In one embodiment, a signal from the first SPS satellite may be weaker than a signal from a second SPS satellite shown as an unsound satellite.
Abstract:
PROBLEM TO BE SOLVED: To provide a telecommunication device and a telecommunication method which enable communication with a remotely situated low duty cycle device even if the telecommunication device is in a sleep mode in order to conserve battery power.SOLUTION: Remote monitoring of operations includes monitoring operational status information and transmitting the operational status information to a remotely situated low duty cycle device via radio frequency signals as short messages. The low duty cycle device is activated from a hibernating state in synchronization with the transmission of messages.
Abstract:
PROBLEM TO BE SOLVED: To reduce datalink requirements for a method and a system in which a network location specification server specifies a location of a mobile station is specified.SOLUTION: Data link requirements are reduced by two methods. A method 1 includes: (i) a step 132 for acquiring a raw measurement value; (ii) a step 134 for updating estimation based on the raw measurement value and a previous raw measurement value and/or combination of estimation; (iii) and a step 136 for transmitting the updated estimation to a location specification server. A method 2 includes: (i) a step for acquiring a raw measurement value from a plurality of signals at various time instances; (ii) a step for updating estimation based on the raw measurement value; (iii) a step for performing extrapolation at a certain common time instance; (iiii) and a step for transmitting the extrapolation to the location specification server.
Abstract:
PROBLEM TO BE SOLVED: To remove effects of cross-correlation on a calculation of position of satellite positioning system.SOLUTION: Information on health of a satellite is used in an attempt to avoid using cross-correlation results or detect such results. A method receives SPS signals from in view SPS satellites and determines whether a first measurement, corresponding to a first SPS satellite which has been indicated to be a healthy satellite, is to be removed from a set of measurements to be used to solve for a position of a mobile SPS receiver. The determination tests whether the first measurement is derived from the SPS signals.