1
Ari Kangas, Erik Larsson, Sven Fischer, Patrik Lundqvist, Mats Cedervall: Downlink observed time difference measurements. Telefonaktiebolaget LM Ericsson, Jenkens & Gilchrist, March 12, 2002: US06356763 (107 worldwide citation)

A mobile communication station in a wireless communication network is used to measure the respective times of arrival of radio signals respectively transmitted by a plurality of radio transmitters in the network. The mobile communication station is provided with real time difference information indi ...


2
Ari Kangras, Sven Fischer: Calibration of positioning systems. Telefonaktiebolaget LM Ericsson, October 18, 2005: US06957072 (103 worldwide citation)

Mobile station positioning methods are calibrated using an error bias estimation for refining the determination of the mobile station location which does not require any added hardware to the telecommunications system. The position of the mobile station is calculated assuming no bias errors and a fi ...


3
Sven Fischer, Ari Kangas, Patrik Lundqvist, Erik Larsson: Methods and arrangements for locating a mobile telecommunications station. Telefonaktiebolaget LM Ericsson, Jenkens & Gilchrist A Professional Corporation, September 25, 2001: US06295455 (94 worldwide citation)

In a mobile telecommunications network, a mobile station (MS) is configured to generate and uplink transmit position measuring data prior to and/or during a call connection, without noticeably interrupting the user or degrading the quality of service provided. Position measuring data can be uplink t ...


4
Ari Kangas, Erik Larsson, Sven Fischer, Patrik Lundqvist: Downlink observed time difference measurements. Telefonaktiebolaget LM Ericsson, Jenkens & Gilchrist a Professional Corporation, December 3, 2002: US06490454 (78 worldwide citation)

A mobile communication station in a wireless communication network is used to measure the respective times of arrival of radio signals respectively transmitted by a plurality of radio transmitters in the network. The mobile communication station is provided with real time difference information indi ...


5
Erik Larsson, Ari Kangas, Sven Fischer: Selection of location measurement units for determining the position of a mobile communication station. Telefonaktiebolaget L M Ericsson, Jenkens & Gilchrist P C, August 28, 2001: US06282427 (76 worldwide citation)

In selecting location measurement units for measuring an uplink signal received from a mobile communication station operating in a wireless communication network in order to locate the position of the mobile communication station in the wireless communication network, a possible position of the mobi ...


6
Hans Grubeck, Sven Fischer, Patrik Lundqvist: Method and system for determining position of mobile radio terminals. Telefonaktiebolaget L M Ericsson, Jenkens & Gilchrist P C, December 28, 1999: US06009334 (62 worldwide citation)

A method and apparatus are disclosed for determining more accurately, in a radio environment with time dispersion, the distance between a radio receiver and radio transmitter, by special processing of received radio signals that have been transmitted repeatedly from the same radio transmitter and ar ...


7
Hans Dieter Schotten, Sven Fischer: Method and apparatus for location determination of a wireless device within an environment. QUALCOMM Incorporated, William Marcus Hooks, Thomas R Rouse, September 16, 2008: US07426197 (55 worldwide citation)

A method and apparatus for determining a location of a wireless device within an environment. A wireless device, which is operable in a wireless communication system, comprises a transmitter for transmitting a first signal to a transponder, where the transponder operates independent of the wireless ...


8
Peter Gaal, Sven Fischer, Stephen W Edge: Global navigation satellite system. QUALCOMM Incorporated, Jimmy Cheng, August 3, 2010: US07768449 (38 worldwide citation)

Each of a first and a second navigation satellite system (NSS) are adapted to operate according to a first and a second specification, respectively, and each includes a first and a second plurality of satellite vehicles (SV), respectively. Each of the first and the second plurality of SVs are adapte ...


9
Kirk Allen Burroughs, Stephen W Edge, Sven Fischer: Method and apparatus for performing position determination with a short circuit call flow. QUALCOMM Incorporated, Jimmy Cheng, Andrea L Mays, July 5, 2011: US07974639 (20 worldwide citation)

For a call flow to perform position determination, a network sends to a user equipment (UE) an indication (e.g., a request for permission) to perform a position fix for the UE. The UE responds by sending to the network an acknowledgment (e.g., a grant of permission) to perform the position fix. The ...


10
Peter Gaal, Sven Fischer, Stephen W Edge: Global navigation satellite system. QUALCOMM Incorporated, Jimmy Chang, Arnold J Gum, December 18, 2012: US08334807 (19 worldwide citation)

Each of a first and a second navigation satellite system (NSS) are adapted to operate according to a first and a second specification, respectively, and each includes a first and a second plurality of satellite vehicles (SV), respectively. Each of the first and the second plurality of SVs are adapte ...