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公开(公告)号：AT546750T
公开(公告)日：2012-03-15
申请号：AT08014372
申请日：2003-10-17
Applicant: QUALCOMM INC
Inventor： SHEYNBLAT LEONID , RILEY WYATT
IPC: G01S19/46 , G01S1/00 , G01S5/02 , G01S19/09 , G01S19/12 , G01S19/23 , G01S19/34 , G01S19/48 , H04W64/00
Abstract: A method and apparatus to utilize a set of measurements (either partial or compete) to improve the accuracy of an initial position estimate for a wireless terminal. The initial position estimate for the terminal is first obtained (e.g., based on a cell-ID or an enhanced cell-ID solution). Measurements are obtained for the terminal. The initial position estimate is then updated with the measurements to obtain a revised position estimate for the terminal. The updating may be performed by (1) deriving a measurement vector based on the initial position estimate and the measurements, (2) forming an observation matrix for the measurements, (3) determining a matrix of weights, (4) deriving a correction vector based on the measurement vector, the observation matrix, and the weight matrix, and (5) updating the initial position estimate with the correction vector.
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公开(公告)号：AU2003254292C1
公开(公告)日：2009-04-02
申请号：AU2003254292
申请日：2003-08-01
Applicant: QUALCOMM INC
Inventor： RILEY WYATT
Abstract: Techniques to estimate the position of a wireless terminal. In a method, the identities of a number of transmitters (e.g., BTSs) to be used to estimate the position are initially received. Expected areas for these transmitters are then determined. The expected area associated with each transmitter is indicative of an area where the terminal is likely to be located given that the signal from the transmitter is received by the terminal. Each expected area may comprise a location (e.g., the expected area center) to be used as an estimated position of the terminal and an uncertainty (or error estimate) associated with that estimated position. The expected areas for the transmitters are then combined (e.g., based on a weighted average) to determine a combined expected area, which is then provided as the estimate of the position of the terminal.
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公开(公告)号：BRPI0411915A
公开(公告)日：2006-08-08
申请号：BRPI0411915
申请日：2004-06-28
Applicant: QUALCOMM INC
Inventor： MOEGLEIN MARK , ROWITCH DOUGLAS N , RILEY WYATT , DELOACH JAMES D JR , SHEYNBLAT LEONID
Abstract: 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.
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公开(公告)号：BRPI0411911A
公开(公告)日：2006-08-08
申请号：BRPI0411911
申请日：2004-06-28
Applicant: QUALCOMM INC
Inventor： MOEGLEIN MARK , ROWITCH DOUGLAS N , RILEY WYATT , DELOACH JAMES D JR , SHEYNBLAT LEONID
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公开(公告)号：MXPA05001519A
公开(公告)日：2005-05-27
申请号：MXPA05001519
申请日：2003-08-01
Applicant: QUALCOMM INC
Inventor： RILEY WYATT
Abstract: Tecnicas para estimar la posicion de una terminal inalambrica. En un metodo, se reciben inicialmente las identidades de un numero de transmisores (es decir, BTS5) que van a ser usados para estimar la posicion. ' Entonces son determinadas las areas esperadas para estos transmisores. El area esperada asociada con cada transmisor es indicativa de un area en donde es probable que este localizada la terminal, debido a que la senal del transmisor es recibida por la terminal. Cada area esperada puede comprender una localizacion (es decir, el centro del area esperada) para ser usada como una posicion estimada de la terminal y una incertidumbre (o estimado de error) asociada con esa posicion estimada. Entonces son combinadas las areas esperadas para los transmisores (por ejemplo, basadas en un promedio ponderado) para determinar un area combinada esperada, la cual es proporcionada entonces como el estimado de la posicion de la terminal.
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Patent Agency Ranking
公开(公告)号：CA2896427A1
公开(公告)日：2005-01-13
申请号：CA2896427
申请日：2004-06-28
Applicant: QUALCOMM INC
Inventor： MOEGLEIN MARK , ROWITCH DOUGLAS N , RILEY WYATT , DELOACH JAMES D JR , SHEYNBLAT LEONID
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公开(公告)号：CA2530892A1
公开(公告)日：2005-01-13
申请号：CA2530892
申请日：2004-06-28
Applicant: QUALCOMM INC
Inventor： MOEGLEIN MARK , SHEYNBLAT LEONID , DELOACH JAMES D JR , ROWITCH DOUGLAS N , RILEY WYATT
Abstract: 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., positi on and coverage area of the wireless access points) for the wireless networks from the collected statistical data.
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公开(公告)号：BR0212400A
公开(公告)日：2004-11-23
申请号：BR0212400
申请日：2002-09-10
Applicant: QUALCOMM INC
Inventor： RILEY WYATT , MARSHALL GRANT
Abstract: A system and method are disclosed by which a base transceiver station (BTS) may be uniquely identified. When attempting to determine the location of a mobile unit using signal from multiple BTSs, it is critical that the BTSs be uniquely identified and their position accurately determined. In many cases, the signals received from the BTSs provide limited identification information and cannot be used to uniquely to identify the BTS from which a signal has been received. The present invention uses available information to generate a candidate list and to determine therefrom the most likely candidates for the Measurement BTSs. Based on this information, the system analyzes cell coverage overlap and relative phase delay to determine the likelihood of a candidate BTS being the actual BTS from which a signal is received. As candidate BTSs are uniquely identified, it is possible to use this additional identification information in an iterative process to further identify additional candidate BTSs.
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公开(公告)号：NO20043170A
公开(公告)日：2004-09-16
申请号：NO20043170
申请日：2004-07-26
Applicant: QUALCOMM INC
Inventor： RILEY WYATT , GIRERD RICHARD , BIACS ZOLTAN
IPC: G01S1/00 , G01S5/02 , G01S19/01 , G01S19/12 , G01S19/25 , G01S19/42 , G01S19/48 , H04B7/26 , H04W64/00 , H04Q7/00
CPC classification number: H04W64/003 , G01S5/0205 , G01S5/021 , G01S5/0226 , G01S5/0236 , G01S5/0242 , G01S19/06 , G01S19/46 , G01S19/48
Abstract: In a wireless communication network, base station antenna positions and time offsets are stored in a base station almanac data base along with other information used for obtaining the most reliable mobile station position fixes under a variety of conditions. The system uses the position fixes of mobile stations and terrestrial ranging information to determine base station antenna positions and base station timing offsets. The base station antenna positions are determined during normal mobile station position determinations, in order to maintain and improve the antenna location data, and to correct for change or relocation of the base station antennas. It is possible to recover quickly from a loss of cell sector identity during relocation of a base station antenna, and to ensure accuracy of mobile station position determination based on ranging from the base stations, and rapid acquisition of position data from mobile stations having global satellite receivers.
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公开(公告)号：CA2514749A1
公开(公告)日：2004-08-12
申请号：CA2514749
申请日：2004-01-30
Applicant: QUALCOMM INC
Inventor： SHEYNBLAT LEONID , AGRE DANIEL H , RILEY WYATT , CARTER STEPHEN S , MOEGLEIN MARK , DELOACH JAMES D JR
Abstract: A method of obtaining data useful for one or more network applications is described. The method is performed responsive to a triggering event, such as a dropped call, a position fix, or even expiration of a timer. A position estimate for a subscriber station is obtained responsive to the event. A record is then formed associating the position estimate for the subscriber station with an identifier of the triggering event and/or data measured or obtained responsive to the event, such as the strength of one or more pilots visible to the subscriber station. The record is either stored locally or transmitted to a remote location. In one implementation, the record is transmitted to a remote location, and stored in a database holding like records relating to other subscriber stations.
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