Patent application number | Description | Published |
20090121928 | Suppression of Multipath Effects for Received SPS Signals - The subject matter disclosed herein relates to suppressing the effects of multipath signals. For an example, a signal comprising at least one binary offset carrier (BOC) modulation signal is received. The BOC modulation signal is modulated with a pseudorandom noise sequence comprising a plurality of chips, wherein each of the chips has a set interval. The received signal is correlated with portions of the plurality of chips to provide a power signal and to remove at least a portion of a multipath component in the received signal from the power signal. The portions of the chips are less than the set interval. | 05-14-2009 |
20090219202 | Satellite Time Determination for SPS Receiver - Methods and apparatus for improving position location performance, especially in weak coverage areas, are described herein. A SPS receiver is able to solve for position location in situations where at least two satellite signals can be received but only one time stamp can be successfully demodulated. The receiver can utilize the successfully decoded time reference to determine a time associated with bit edge transitions for signals from that satellite. The receiver utilizes the bit edge transition with the known time to set the time for at least one bit edge transition for signals from other satellites for which the time stamp is not demodulated. The receiver sets the time hypothesis to bit edge transitions occurring within a predetermined window including the bit edge transition with the known time. A position can be determined based on the time hypothesis. The time hypothesis and window placement can be modified following invalid position solutions. | 09-03-2009 |
20090256745 | System and/or Method for Obtaining a Time Reference for a Received SPS Signal - The subject matter disclosed herein relates to a system and method for obtaining time references for signals received from transmitters in a satellite and/or terrestrial navigation system. | 10-15-2009 |
20090318167 | LOCATION SPECIFIC SEARCH FOR REGIONAL SATELLITE VEHICLES - A position location system, method, and apparatus are disclosed. A wireless device receives a first signal and obtains an identifier indicative of a first location from the first signal. The first signal can be received from a cellular base station and the first identifier can be a mobile country code. The wireless device uses the identifier to determine the availability of signals from a regional satellite system at the first location. If signals from the regional satellite system are available at the first location, the wireless device retrieves information associated with one or more satellite vehicles in the regional satellite system. The information can include pseudo-random number codes and a Doppler search range corresponding to the first location. The wireless device receives a second signal and processes the second signal to obtain first satellite signal information. The wireless device determines its position at least partially based on the first satellite signal information. | 12-24-2009 |
20100085250 | METHOD FOR PROCESSING COMBINED NAVIGATION SIGNALS - The subject matter disclosed herein relates to a system and method for processing multiple navigation signal components received from multiple global navigation satellite systems (GNSS′). In a particular implementation, a code phase in a first navigation signal component may be detected based, at least in part, on information in a second navigation signal component. | 04-08-2010 |
20100117897 | METHOD FOR POSITION DETERMINATION WITH MEASUREMENT STITCHING - A mobile communications device uses a method for determining position that involves a positioning filter, such as a Kalman filter, which is initialized with measurements from reference stations such as satellite vehicles and/or base stations which may be acquired during different epochs. Accordingly, the positioning filter may be used for position estimation without the need to first acquire at least three different signals during the same measurement epoch. | 05-13-2010 |
20100135365 | METHOD AND APPARATUS FOR MULTIPATH MITIGATION - An apparatus and method for short multipath mitigation. In one aspect the method comprises subtracting a first stronger path from a correlation function to obtain a first residual signal, wherein one component of the first residual signal is a weaker path; applying reconstruction on the first residual signal to obtain a first reconstructed weaker path; subtracting the first reconstructed weaker path from the correlation function to obtain a second residual signal; and applying reconstruction on the second residual signal to obtain a second stronger path. In one aspect, the apparatus includes an antenna for receiving a composite receive RF signal, a receiver front-end for converting the composite receive RF signal into a composite receive digital signal; and a processor for performing signal correlation on the composite receive digital signal to obtain a correlation function and for processing the correlation function to obtain a desired signal. In one aspect, the short multipath is identified by computing a Left Edge Height Ratio Indicator (LEHRI). | 06-03-2010 |
20100149026 | DGNSS CORRECTION FOR POSITIONING - Techniques for supporting positioning with differential corrections are described. In an aspect, differential correction for a satellite may include (i) a user differential range error (UDRE) indicating an uncertainty in a pseudo-range correction for the satellite, (ii) a UDRE growth rate, which may be a scaling factor for the UDRE, and (iii) a time of validity for UDRE growth rate, which may be a time unit used to apply the scaling factor. In one design, a terminal may send a request message to ask for differential correction information and may receive a response message. The terminal may obtain differential correction (e.g., a UDRE, a UDRE growth rate, and a time of validity for UDRE growth rate) for each of at least one satellite from the response message. The terminal may derive a location estimate for itself based on the differential correction for each satellite. | 06-17-2010 |
20100153040 | WAVEFORM CORRELATION RESULT PROCESSING METHODS AND APPARATUSES - Methods and apparatus are provided for use in devices adapted to perform waveform correlation result processing. An exemplary method may include accessing a plurality of collected measurement values stored in memory, establishing at least one combined measurement value based, at least in part, on at least two of the collected measurement values, and identifying at least one wireless signal within a reference waveform based, at least in part, on at least the combined measurement value. The method may also include establishing the at least one correlation result for at least one of the plurality of waveforms by correlating the at least one of the plurality of waveforms with the reference waveform. | 06-17-2010 |
20100329312 | Wideband Correlation Mode Switching Methods And Apparatuses - Methods and apparatus are provided for use in devices operatively enabled to perform waveform correlation result processing. | 12-30-2010 |
20110006947 | System And/Or Method For Reducing Ambiguities In Received SPS Signals - The subject matter disclosed herein relates to systems, apparatuses, and/or methods for resolving ambiguities associated with signals received from space vehicles (SVs) in a satellite navigation system. For example, certain methods include receiving a first SV signal from a first satellite positioning system (SPS), and reducing a bit edge ambiguity of a data signal modulating a second SV signal received from a second SPS based, at least in part, on information in the received first SV signal. | 01-13-2011 |
20110273332 | METHOD FOR PROCESSING COMBINED NAVIGATION SIGNALS - The subject matter disclosed herein relates to a system and method for processing multiple navigation signal components received from multiple global navigation satellite systems (GNSS'). In a particular implementation, a code phase in a first navigation signal component may be detected based, at least in part, on information in a second navigation signal component. | 11-10-2011 |
20110298662 | SYSTEM AND/OR METHOD FOR ACQUISITION OF GNSS SIGNALS - The subject matter disclosed herein relates to a system and method for acquiring signal received from space vehicles (SVs) in a satellite navigation system. In one example, although claimed subject matter is not so limited, information processed in acquiring a signal from a first SV may be used in acquiring a signal from a second SV. | 12-08-2011 |
20120119947 | System and/or method for reducing ambiguities in received SPS signals - The subject matter disclosed herein relates to a system and method for resolving ambiguities associated with signals received from space vehicles (SVs) in a satellite navigation system. | 05-17-2012 |
20120249369 | QUASI-COLD START SATELLITE VEHICLE SEARCH METHOD AND SYSTEM - Methods, systems, computer readable media, and mobile devices for searching for global navigation satellite system (GNSS) signals include acquiring satellite position location signals from a first SV in the GNSS from an Earth location. From an SV position list a determination is made whether any SVs in the GNSS are not-in-view of the first SV. Satellite position location signals are searched from other SVs in the GNSS, except from any SVs that have been determined not-in-view of the first SV. According to one aspect, ellipsoidal, additional, and extrapolated elimination regions are created to expand the SVs that can be eliminated as being not-in-view. | 10-04-2012 |
20120300885 | System and/or method for reducing ambiguities in received SPS signals - The subject matter disclosed herein relates to a system and method for resolving ambiguities associated with signals received from space vehicles (SVs) in a satellite navigation system. | 11-29-2012 |
20140066087 | PROVIDING LOCATION ASSISTANCE INFORMATION USING DATA FROM SMART METERS - Methods, systems, computer-readable media, and apparatuses for providing location assistance information using data from smart meters are presented. in some embodiments, a smart meter configured to measure service usage at a premises may transmit at least one data message to at least one wireless access point located at the premises, and the at least one data message may include information identifying a location of the smart meter. In addition, the at least one data message may be configured to cause the at least one wireless access point to provide, to at least one mobile device connected to the at least one wireless access point, the location of the smart meter as an estimated position of the at least one wireless access point. | 03-06-2014 |
20140155084 | MULTI-MODE WIRELESS POSITION ASSOCIATION - Position information obtained from a first wireless communication point may be associated with a second wireless communication point when signals are received from both the first and second wireless communication points, e.g., at or approximately at the same time. The wireless communication points may be, e.g., wireless network base station, access points, femto cells, etc. The position information may be a position for the first wireless communication point and a position uncertainty, which may be based on distances to the first and second wireless communication points, e.g., determined using wireless signal characteristics. The position information may be an uncertainty region determined based on position information from multiple wireless communication points. The position information associated with the second wireless communication point may be used in an application, e.g., obtaining a GPS position fix. | 06-05-2014 |
20140233624 | METHOD AND APPARATUS TO DETERMINE TIME AND DISTANCE BETWEEN TRANSCEIVERS USING PHASE MEASUREMENTS - Systems, apparatuses and methods are disclosed for estimating a signal travel time, and thus distance between transceivers, in an orthogonal frequency division multiplexing (OFDM) system. The signal travel time is measured between a transmit time (t | 08-21-2014 |
20140364143 | PROVIDING LOCATION ASSISTANCE INFORMATION USING DATA FROM SMART METERS - Methods, systems, computer-readable media, and apparatuses for providing location assistance information using data from smart meters are presented. In some embodiments, a smart meter configured to measure service usage at a premises may transmit at least one data message to at least one wireless access point located at the premises, and the at least one data message may include information identifying a location of the smart meter. In addition, the at least one data message may be configured to cause the at least one wireless access point to provide, to at least one mobile device connected to the at least one wireless access point, the location of the smart meter as an estimated position of the at least one wireless access point. | 12-11-2014 |