| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 342357640 | Involving aiding data received from a cooperating element; e.g., assisted GPS (IPC) | 30 |
| 20100328152 | METHOD AND APPARATUS FOR PROCESSING SATELLITE POSITIONING SYSTEM SIGNALS - Method and apparatus for processing a satellite positioning system (SPS) signal is described. In one example, a timing reference related to a SPS time of day is obtained from a wireless communication signal received by a mobile receiver. A bias in a local clock of the mobile receiver with respect to a frame timing of a repeating code broadcast by the satellite is compensated for in response to the timing reference. An expected code delay window is obtained for the SPS signal at the mobile receiver. The SPS signal is correlated with a reference code within the expected code delay window. In another example, an expected code delay window is obtained at the mobile receiver. The mobile receiver selects a sampling resolution in response to a size of the expected code delay window. The SPS signal is sampled at the selected sampling resolution and then correlated with a reference code. | 12-30-2010 |
| 20110032146 | Providing Positioning Assistance Data - For supporting the use of positioning assistance data, a positioning assistance server collects positioning assistance data from at least one mobile device and Provides the collected positioning assistance data for distribution to at least one other device. | 02-10-2011 |
| 20110068978 | Method and Apparatus for Processing Location Service Messages in a Satellite Position Location System - Method and apparatus for processing location service messages in a satellite position location system is described. In one example, a mobile receiver includes a satellite signal receiver, wireless circuitry, and at least one module. The satellite signal receiver is configured to receive satellite positioning system signals, such as Global Positioning System (GPS) signals. The wireless circuitry is configured to communicate location service messages between the mobile receiver and a server through a cellular communication network. The location service messages may include any type of data related to A-GPS operation, such as assistance data, position data, request and response data, and the like. The at least one module is configured to provide a user-plane interface and a control-plane interface between the satellite signal receiver and the wireless transceiver. The at least one module is capable of processing location service messages communicated using either the control-plane signaling or user-plane signaling mechanisms. | 03-24-2011 |
| 20110074629 | TECHNIQUES FOR BAR CODE ASSISTED POSITIONING - A method and apparatus for generating a bar code and for using a bar code to assist with positioning are provided. The method for generating a bar code to assist with positioning includes obtaining Global Positioning System (GPS) assistance data, generating a bar code with the GPS assistance data encoded therein, and displaying the bar code. The method for using a bar code to assist with positioning includes scanning a bar code, obtaining GPS assistance data from the scanned bar code, receiving and locking onto one or more GPS signals by using the GPS assistance data, and determining a position using the received one or more GPS signals. | 03-31-2011 |
| 20110109505 | GNSS SATELLITE FREQUENCY IS IN GNSS ASSISTANCE DATA STANDARDS - Systems and methods are provided to allow for the use of existing satellite identification parameters generically, so as to allow for Global Navigation Satellite System (GLONASS) identification. In addition, an optional or conditional parameter is linked to the satellite identification parameter for a frequency identification, where frequency identification is indicative of a Frequency Division Multiple Access (FDMA) frequency value. Such a frequency identification parameter is optional as it is needed only for current GLONASS and/or near-future GLONASS (e.g., GLONASS-M) satellites. Hence, utilization of the frequency identification parameter maybe unnecessary and therefore, not included/not linked when considering next generation GLONASS satellites, e.g., GLONASS-K satellites. Additionally, signals supported by particular global positioning system (GPS) satellites can be indicated with the use of generic satellite identification. | 05-12-2011 |
| 20110133984 | Devices, Systems and Methods for Locating a Positioning Satellite - A mobile communication device is disclosed which receives a Base Station Transceiver (BTS) broadcast that identifies the serving cell coordinates, PLMN information, etc. The device determines an approximate location in Europe, and uses this information to invoke an almanac containing information about GALILEO satellites rather than GPS satellites. Consequently, broadcast network identifiers are used to determine an appropriate satellite constellation. | 06-09-2011 |
| 20110140962 | Devices, Systems and Methods for Providing Location Information Over a Cellular Network - The disclosure provides devices, systems, and methods for approximating the location of a mobile communication device. A base station transceiver (BTS) broadcasts assistance data across a control channel. The assistance data is received by a mobile communication device in communication with the BTS. The assistance data includes location information for the BTS, and Public Land Mobile Network (PLMN) information associated with the BTS. The assistance data can be broadcast by incorporating these fields in a control channel between the BTS and the mobile communication device. A-GPS devices correlate the received assistance data with a GPS almanac in order to connect to a set of positioning satellites. Devices without a GPS receiver or devices unable to connect to a satellite correlate the received assistance data to a known approximate location, by referring to a database stored on the device or on the network. | 06-16-2011 |
| 20110148700 | METHOD AND SYSTEM FOR MOBILE DEVICE BASED GNSS POSITION COMPUTATION WITHOUT EPHEMERIS DATA - A GNSS enabled mobile device receives GNSS assistance data comprising acquisition assistance data, from an A-GNSS server and calculates a relative GNSS position using the receive acquisition assistance data and a local code delay measurement, without using ephemeris data. The received GNSS assistance data comprises an approximate position, acquisition assistance data, satellite almanac data, and/or satellite azimuth and elevation fields, but no ephemeris data. The A-GNSS server calculates corresponding acquisition assistance data at a current time instant and/or one or more future time instants for the approximate position. The satellite azimuth and elevation fields are calculated using local GNSS measurements together with the acquisition assistance data in the received GNSS assistance data are used to calculate the relative GNSS position, which is added to the approximate position to generate an actual GNSS position. | 06-23-2011 |
| 20110148701 | Precise Absolute Time Transfer From A Satellite System - Systems and methods according to one or more embodiments are provided for obtaining a precise absolute time using a satellite system. The precise absolute time may be used, for example, as an aid for positioning systems including navigation in attenuated or jammed environments. A method of obtaining precise absolute time transfer from a satellite according to an embodiment comprises: receiving a precision time signal from a satellite, wherein the precision time signal comprises a periodic repeating code; determining a timing phase of the code; receiving additional aiding information; and using the timing phase and the additional aiding information to determine a precise absolute time. | 06-23-2011 |
| 20110199262 | ESTIMATING FREQUENCY OF A GNSS ENABLED DEVICE BASED ON TIME STAMPS - A GNSS enabled device that is communicatively coupled to a network, receives time stamps via the network. The time stamps are generated based on reference clock signals within the network. GNSS receiver clock signal frequency may be adjusted based on the time stamps. When GNSS satellite signals and/or SRN signals are not available, the time stamps enable synchronization with GNSS satellites. Network clock signals and/or time stamps may be generated by an access point, a DSL modem, a cable modem and/or a primary reference clock within the network. A series of time stamps may be utilized for adjusting frequencies. Clock signals may be generated for adjusting frequencies based on a comparison between time stamps and oscillator or mixer output. Clock signals are generated for baseband, intermediate and/or RF frequency signal processing. GNSS satellite signals may be demodulated, correlated with a pseudonoise code sequence and/or synchronized based on the time stamps. | 08-18-2011 |
| 20110273331 | GLOBAL POSITIONING SYSTEM RECEIVER WITH PHASE OFFSET COMPENSATION - An electronic device such as a cellular telephone may include transceiver circuitry for handling wireless communications. The transceiver circuitry may include a transceiver such as a cellular telephone transceiver or a wireless local area network receiver and may include a satellite positioning system receiver. Radio-frequency circuitry may be used to couple the transceiver circuitry to antenna structures. When operating the transceiver in different modes of operation, the radio-frequency circuitry may be adjusted to optimize performance. Adjustments to the radio-frequency circuitry may impose phase offsets on satellite positioning system signals that are received through the antenna structures and radio-frequency circuitry. These phase offsets which would otherwise cause degradation in the satellite positioning system receiver can be compensated by applying stored compensating phase offset values to the satellite positioning system receiver during operation. | 11-10-2011 |
| 20110279315 | METHOD AND APPARATUS FOR DETERMINING GNSS TIME FOR A GNSS RECEIVER WITHOUT ACCURATE TIME INFORMATION - A method and an apparatus for determining a Global Navigation Satellite System (GNSS) time for a GNSS receiver are provided. The method includes storing ephemeris information into a non-volatile memory, and utilizing the ephemeris information to determine a GNSS time without referring a real time clock (RTC). The apparatus includes a storage module and a processing module coupled to the storage module. The storage module is utilized for storing data. The stored data in the storage module is non-volatile. The processing module stores ephemeris information into the storage module and utilizes the ephemeris information to determine a GNSS time without referring a real time clock (RTC). | 11-17-2011 |
| 20120001799 | GEOPOSITIONING METHOD USING ASSISTANCE DATA - In order to enable a geopositioning receiver of a user to resolve phase ambiguities without necessarily using multi-frequency observations, assistance data is developed thanks to measurements made at a reference network ( | 01-05-2012 |
| 20120019412 | GPS TERMINAL, POSITIONING METHOD, COMMUNICATION SYSTEM, AND PROGRAM - A GPS terminal, comprises: a communication unit that receives assist data from a network, the assist data used for positioning via GPS (Global Positioning System); and a GPS positioning unit that receives a GPS signal using the assist data and outputs a positioning result. A communication session with the network is released without waiting for said GPS positioning unit to complete positioning. | 01-26-2012 |
| 20120133556 | MOBILE APPARATUS - A mobile apparatus is provided. The mobile apparatus comprises a transceiver and a processor. The transceiver receives a nearby signal from a nearby mobile apparatus, wherein the nearby signal carries a nearby positioning information. The processor electrically connected to the transceiver estimates a nearby received signal strength of the nearby signal according to the nearby signal, and generates a host positioning information according to the nearby received signal strength and the nearby positioning information. | 05-31-2012 |
| 20120154216 | METHOD OF DETERMINING APPROPRIATENESS OF SATELLITE ORBIT MODELING, METHOD OF PROVIDING LONG-TERM PREDICTED ORBIT DATA, AND DEVICE FOR DETERMINING APPROPRIATENESS OF SATELLITE ORBIT MODELING - A method of determining the appropriateness of satellite orbit modeling is provided. The method includes calculating values of parameters, that the predetermined model has, on the basis of predicted position data including a first predicted position at a first point of time and a second predicted position at a second point of time of a positioning satellite in time series, calculating a first and a second calculated positions of the positioning satellite derived from the predetermined model by using the values of the parameters; and determining the appropriateness of the predetermined model using the values of the parameters, on the basis of first difference between the first predicted position and the first calculated position, and seconded difference between the second predicted position and the second calculated position. The predetermined model is used when approximating a satellite orbit of the poisoning satellite. | 06-21-2012 |
| 20120268322 | GPS POSITIONING SYSTEM, GPS POSITIONING METHOD, AND GPS POSITIONING TERMINAL - A GPS positioning system including: a storage unit for storing therein assist data for GPS positioning; a determination unit for determining whether the stored assist data stored in the storage unit is valid or invalid; an autonomous positioning unit for, when the stored assist data is determined to be valid, based on the stored assist data determined to be valid without communicating with a base station, performing GPS positioning; an A-GPS positioning unit for, when the stored assist data is determined to be invalid, based on assist data acquired by communication with the base station, performing GPS positioning; and an updating unit for, when the GPS positioning succeeds, based on a result of the positioning, updating the stored assist data and, when the GPS positioning fails, based on the assist data acquired by communication with the base station, updating the stored assist data. | 10-25-2012 |
| 20130021202 | Systems and Methods of Communication in an Assisted Navigation System - Provided herein are methods and systems for efficient communication between a server and a client in an assisted navigation system. In one or more embodiments, the server transmits a set of parameters for a satellite to the client, e.g., a GPS receiver, via a wireless or wired connection. The set of parameters includes a force parameter, initial condition parameters and time correction coefficients for the satellite. The receiver uses the received parameters in a numerical integration to compute the position of the satellite at a desired time. The set of parameters needed for the integration is small. To further reduce the amount of data transmitted, reference parameters may be subtracted from the original parameters before transmission from the server. The receiver is able to reconstruct the original parameters from the received parameters and the identically computed reference parameters. The parameters may be further compressed using data compression techniques. | 01-24-2013 |
| 20130194132 | SATELLITE RECEIVER AND SYSTEM EMPLOYING SERVER FOR IDENTIFYING SATELLITE STATE - Provided is a system and method for transmitting a satellite state to a satellite receiver to determine use or non-use of a satellite signal in positioning estimation. A satellite navigation system includes at least one satellite, a satellite control center for controlling the at least one satellite, and a server. The server transmits satellite state information about the at least one satellite identified through the satellite control center to the satellite receiver. The satellite receiver restricts the use of the satellite signal for positioning estimation when the satellite state is identified as erroneous. | 08-01-2013 |
| 20130271318 | ADVANCED GLOBAL NAVIGATION SATELLITE SYSTEMS (GNSS) POSITIONING USING PRECISE SATELLITE INFORMATION - A method is provided for estimating parameters useful to determine the position of a global navigation satellite system (GNSS) receiver or a change in the position thereof. The method includes the steps of: obtaining at least one GNSS signal received at the GNSS receiver from each of a plurality of GNSS satellites; obtaining, from at least one network node, precise satellite information on: (i) the orbit or position of at least one of the plurality of GNSS satellites, and (ii) a clock offset of at least one of the plurality of GNSS satellites; identifying, among the obtained GNSS signals, a subset of at least one GNSS signal possibly affected by a cycle slip, the identified subset being hereinafter referred to as cycle-slip affected subset; and estimating parameters useful to determine the position of the GNSS receiver or a change in the position of the GNSS receiver using at least some of the obtained GNSS signals which are not in the cycle-slip affected subset, and the precise satellite information. | 10-17-2013 |
| 20140062781 | GNSS LONG-CODE ACQUISITION, AMBIGUITY RESOLUTION, AND SIGNAL VALIDATION - The present invention relates to a system and method using hybrid spectral compression and cross correlation signal processing of signals of opportunity, which may include Global Navigation Satellite System (GNSS) as well as other wideband energy emissions in GNSS obstructed environments. Combining spectral compression with spread spectrum cross correlation provides unique advantages for positioning and navigation applications including carrier phase observable ambiguity resolution and direct, long-code spread spectrum signal acquisition. Alternatively, the present invention also provides unique advantages for establishing the validity of navigation signals in order to counter the possibilities of electronic attack using spoofing and/or denial methods. | 03-06-2014 |
| 20140085142 | COLLABORATIVE ASSISTED GLOBAL POSITIONING SYSTEM - An system and method for assisting global positioning system (GPS) receivers in acquiring and tracking satellites. A method for assisting GPS receivers in acquiring and tracking satellites includes receiving satellite parameters of at least one satellite visible to at least one GPS receiver. The method further includes receiving a request for assistance from a requesting GPS receiver and assisting the requesting GPS receiver in acquisition and tracking using the received satellite parameters. | 03-27-2014 |
| 20140104103 | SERVER ALGORITHMS TO IMPROVE SPACE BASED AUTHENTICATION - A system and methods for location authentication are presented. An estimated server signal is estimated based on a generated known code signal, and a client received satellite signal is received from a client device. The client received satellite signal is compared to the estimated server signal to provide a comparison result. | 04-17-2014 |
| 20140240173 | HIGH SENSITIVITY SATELLITE POSITIONING SYSTEM RECEIVER - An attenuated satellite positioning system (SPS) signal is acquired using long integration over multiple navigation data bits. To produce a stable internal clock signal to perform the long integration, an external clock signal is received from a highly stable source, such as a wireless communication base station or a nearby femtocell. An internal oscillator is driven at a desired frequency that is aligned with the scaled frequency of the external clock signal to produce the stable internal clock signal. The SPS signal is received and integrated for an extended period using the internal clock signal. Predicted SPS data may be received from an external source and used to perform coherent integration. Alternatively, non-coherent integration may be performed. Additionally, a motion sensor may be used to determine if there is motion relative to the external clock source or to compensate for Doppler errors in the external clock signal due to motion. | 08-28-2014 |
| 20150061933 | AUTONOMOUS ORBIT PROPAGATION SYSTEM AND METHOD - A method of predicting a location of a satellite is provided wherein the GPS device, based on previously received information about the position of a satellite, such as an ephemeris, generates a correction acceleration of the satellite that can be used to predict the position of the satellite outside of the time frame in which the previously received information was valid. The calculations can be performed entirely on the GPS device, and do not require assistance from a server. However, if assistance from a server is available to the GPS device, the assistance information can be used to increase the accuracy of the predicted position. | 03-05-2015 |
| 20160025860 | 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. | 01-28-2016 |
| 20160025862 | 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. | 01-28-2016 |
| 20160033650 | METHOD AND SYSTEM FOR SELECTING OPTIMAL SATELLITES FOR A-GPS LOCATION OF HANDSETS IN WIRELESS NETWORKS - A system and method for determining a set of satellites for which assistance data may be provided to a wireless device. A boundary for an approximate area in which the wireless device is located may be determined and one or more sets of satellites may be determined as a function of the boundary. An optimum set of satellites from the one or more sets of satellites may then be determined using a satellite selection function on the one or more sets of satellites at predetermined points substantially on the boundary. | 02-04-2016 |
| 20160187488 | SATELLITE-BASED POSITIONING METHOD AND ASSOCIATED APPARATUS - A satellite-based positioning method includes: obtaining predicted satellite data for at least one satellite vehicles (SVs) in a global navigation satellite system (GNSS); obtaining reference satellite data for the at least one SV; calculating satellite prediction error data for each of the at least one SV according to the predicted satellite data and the reference satellite data; and utilizing a processing unit to calculate a parameter for each of the at least one SV based on the satellite prediction error data. An associated satellite-based positioning apparatus is also provided. | 06-30-2016 |
| 20170234979 | GNSS LONG-CODE ACQUISITION, AMBIGUITY RESOLUTION, AND SIGNAL VALIDATION | 08-17-2017 |
