Patent application number | Description | Published |
20090131076 | Method and Apparatus for Location Determination in a Wireless Assisted Hybrid Positioning System - Methods and apparatuses for location determination in wireless assisted positioning systems. In one aspect of the disclosed method and apparatus, a method to determine a position of a mobile device in a positioning system includes: computing a second estimated position of a mobile device using a first assumed geometric relationship for a location of the mobile device in relation to a navigational transmitter (e.g., a basestation, a pseudolite, or a Satellite Positioning System (SPS) satellite). The first geometric relationship is linearly independent from the altitude of the mobile device (e.g., obtained from an altitude aiding) and a second geometric relationship based on range information (e.g., a range from the mobile device to the navigational transmitter, a pseudorange, an arrival time, or a round trip time) measured with respect to the navigational transmitter. In another embodiment of the disclosed method and apparatus, the method to determine a position of a mobile device in a positioning system includes: determining an estimated clock bias from a strength indicator of a signal transmitted from a navigational transmitter to the mobile device. | 05-21-2009 |
20090280775 | Providing Base Station Almanac to Mobile Station - The subject matter disclosed herein relates to a hierarchal base station almanac received at a mobile station. | 11-12-2009 |
20090295630 | METHOD AND APPARATUS FOR POSITION DETERMINATION WITH EXTENDED SPS ORBIT INFORMATION - A method and system for assisting mobile stations to locate a satellite use an efficient messaging format. A server computes a correction between coarse orbit data of a satellite and precise orbit data of the satellite. A coordinate system is chosen such that variation of the correction is substantially smooth over time. The server further approximates the correction with mathematical functions to reduce the number of bits necessary for transmission to a mobile station. The mobile station, upon receiving the coefficients, evaluates the mathematical functions using the coefficients and a time of applicability (e.g., the current time), converts the evaluated result to a standard coordinate system, and applies the conversion result to the coarse orbit data to obtain the precise orbit data. | 12-03-2009 |
20100178934 | ENVIRONMENT-SPECIFIC MEASUREMENT WEIGHTING IN WIRELESS POSITIONING - The subject matter disclosed herein relates to a system and method for estimating a location of a mobile station based, at least in part, on one or more measurements obtained from the mobile station based at least in part on one or more signals received by the mobile station from one or more signal sources. Such measurements may be combined based, at least in part, on estimates of measurement errors associated with the signal sources. In a particular implementation, such error estimates may be updated to account for changes in an operational environment. | 07-15-2010 |
20110059756 | SPARSE NETWORK ALMANAC - The subject matter disclosed herein relates to creation, maintenance, communication, and/or use of sparse network almanac information that may be located in a mobile station. | 03-10-2011 |
20110065457 | TRANSMITTER POSITION INTEGRITY CHECKING - The subject matter disclosed herein relates to determining whether a reported position of a wireless transmitter is sufficiently accurate in accordance with an accuracy metric based at least in part on a calculated range between an estimated position of a mobile station and the reported position and also based at least in part on one or more measurements taken from one or more signals transmitted by the wireless transmitter. | 03-17-2011 |
20110105149 | SELECTING A POSITION FIX TO DETERMINE THE LOCATION OF A WIRELESS COMMUNICATION DEVICE - Different types of position fixes may be used to determine the location of a mobile station in a wireless communication system. The position fixes include terrestrial, or network, based techniques, and non-network based techniques, such as satellite, based techniques. An apparatus and method are presented by which different position fixes may be selected, based on the performance of a particular position fix in a particular mobile remote unit. | 05-05-2011 |
20110279324 | COMPRESSED SENSING FOR NAVIGATION DATA - Methods, apparatuses, and systems are provided for processing positioning signals to obtain navigation information by applying compressed sensing. | 11-17-2011 |
20110291885 | ALMANAC MAINTENANCE FOR MOBILE STATION POSITIONING - An almanac data management system at a location remote from a cell phone ( | 12-01-2011 |
20110312320 | SATELLITE-ASSISTED POSITIONING IN HYBRID TERRESTRIAL-SATELLITE COMMUNICATION SYSTEMS - Mobile device positioning includes a mobile device receiving a prompt to discover its position. In response to this prompt, the mobile device searches for communication signals between the mobile device and one of the communication satellites of the hybrid terrestrial-satellite communication system. If such signals are found, the mobile device accesses a communication satellite almanac to retrieve a location associated with the coverage area of the satellite spot beam in which the mobile device is currently located. Using this coverage area location information, the mobile device may access a satellite positioning system to obtain more accurate position data. | 12-22-2011 |
20120252425 | WIRELESS COMMUNICATION DEVICES IN WHICH OPERATING CONTEXT IS USED TO REDUCE OPERATING COST AND METHODS FOR OPERATING SAME - A mobile device has operating resources available to it. A measurement generator provides measurements of the operating resources and a context awareness engine identifies which of the operating resources may be efficiently utilized by a service application in view of context conditions in which the mobile device is operating. A selection controller selects, based on the measurements, at least one of the identified operating resources for use by the service application to improve or optimize a cost of the mobile device. | 10-04-2012 |
20120252495 | POSITIONING SYSTEM USING LIGHT INFORMATION - An apparatus and method for initiating a search mode of a mobile device based on the light information in the environment of the mobile device is described herein. The light information may include at least one of color temperature or illuminance, which may be used to determine if the environment of the mobile device is indoors or outdoors. A threshold may be predetermined or adjusted based on received position assistance information. The position assistance information may include at least one of time, day, solar angle, motion information, location information, or weather information. | 10-04-2012 |
20130017840 | POSITION ESTIMATING FOR A MOBILE DEVICE - Disclosed are methods, techniques and/or systems for selecting and/or determining a strategy and/or approach for searching for signals at a mobile device. Characteristics of and/or information obtained from such searched signals may be used in estimating a location of the mobile device. In one particular example, a strategy and/or approach for searching for wireless signals may be based, at least in part, on an availability of resources at a mobile device. | 01-17-2013 |
20130201056 | METHOD AND APPARATUS FOR POSITION DETERMINATION WITH EXTENDED SPS ORBIT INFORMATION - A method and system for assisting mobile stations to locate a satellite use an efficient messaging format. A server computes a correction between coarse orbit data of a satellite and precise orbit data of the satellite. A coordinate system is chosen such that variation of the correction is substantially smooth over time. The server further approximates the correction with mathematical functions to reduce the number of bits necessary for transmission to a mobile station. The mobile station, upon receiving the coefficients, evaluates the mathematical functions using the coefficients and a time of applicability (e.g., the current time), converts the evaluated result to a standard coordinate system, and applies the conversion result to the coarse orbit data to obtain the precise orbit data. | 08-08-2013 |
20130201059 | METHOD AND APPARATUS FOR POSITION DETERMINATION WITH EXTENDED SPS ORBIT INFORMATION - A method and system for assisting mobile stations to locate a satellite use an efficient messaging format. A server computes a correction between coarse orbit data of a satellite and precise orbit data of the satellite. A coordinate system is chosen such that variation of the correction is substantially smooth over time. The server further approximates the correction with mathematical functions to reduce the number of bits necessary for transmission to a mobile station. The mobile station, upon receiving the coefficients, evaluates the mathematical functions using the coefficients and a time of applicability (e.g., the current time), converts the evaluated result to a standard coordinate system, and applies the conversion result to the coarse orbit data to obtain the precise orbit data. | 08-08-2013 |
20140106789 | PROVIDING BASE STATION ALMANAC TO MOBILE STATION - The subject matter disclosed herein relates to a hierarchal base station almanac received at a mobile station. | 04-17-2014 |
20140221005 | TERRESTRIAL POSITIONING SYSTEM CALIBRATION - Embodiments disclosed aggregate a plurality of crowdsourced measurement sets for antennas received from a plurality of Mobile Stations (MS) with a Base Station Almanac (BSA), based on a measurement location estimate and a measurement location uncertainty estimate associated with each measurement set. A map comprising a plurality of map layers may be obtained, where each map layer associates locations in the BSA with spatially variable Forward Link Calibration (FLC) values for the antenna derived from the updated BSA data, wherein each spatially variable FLC value is associated with a corresponding location in the updated BSA data. Map layers, which may also include multipath map and/or received signal strength layers, may be provided to MS′ as location assistance data. | 08-07-2014 |
20140232601 | POSITION ESTIMATION ASSISTANCE INFORMATION FOR MOBILE STATION - The subject matter disclosed herein relates to providing assistance information to a mobile station for performing position estimation operations. | 08-21-2014 |
20150018009 | METHOD AND APPARATUS FOR WIRELESS NETWORK HYBRID POSITIONING - Methods and apparatuses for position determination and other operations. In one embodiment of the present invention, a mobile station uses wireless signals from a plurality of wireless networks (e.g., with different air interfaces and/or operated by different service providers) for position determination (e.g., for data communication, for obtaining time and/or frequency information, for range measurement, for sector or altitude estimation). In one embodiment of the present invention, 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., position and coverage area of the wireless access points) for the wireless networks from the collected statistical data. | 01-15-2015 |
20150057018 | WIRELESS NETWORK HYBRID POSITIONING - Methods and apparatuses for position determination and other operations. In one embodiment of the present invention, a mobile station uses wireless signals from a plurality of wireless networks (e.g., with different air interfaces and/or operated by different service providers) for position determination (e.g., for data communication, for obtaining time and/or frequency information, for range measurement, for sector or altitude estimation). In one embodiment of the present invention, 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., position and coverage area of the wireless access points) for the wireless networks from the collected statistical data. | 02-26-2015 |