Information transfer in a multi-mode global positioning system used with wireless network
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01C-021/26
G01C-021/28
G01C-021/34
G01C-021/36
출원번호
US-0385198
(2003-03-10)
발명자
/ 주소
Garin, Lionel Jacques
Chadha, Kanwar
Turetzky, Gregory Bret
Pande, Ashutosh
출원인 / 주소
Sirf Technology, Inc.
인용정보
피인용 횟수 :
173인용 특허 :
35
초록▼
The present invention discloses a GPS system that can operate in different modes depending on the network facilities and bandwidth available, the GPS information that can be acquired, or user or system requirements. The modes comprise standalone mode, where a mobile communications device computes th
The present invention discloses a GPS system that can operate in different modes depending on the network facilities and bandwidth available, the GPS information that can be acquired, or user or system requirements. The modes comprise standalone mode, where a mobile communications device computes the position of the device, an autonomous mode, where the mobile communications device transmits the computed position to a server, application, or PSAP in a communications network, a network aided mode, where the network aides the mobile communications device in determining the position of the device, a network based mode, and other modes.
대표청구항▼
1. A geolocation system, comprising:a geolocation server, wherein the geolocation server receives at least one signal from at least one GPS satellite; and a wireless communications device, comprising a GPS receiver section, the GPS receiver being selectively switchable between a standalone mode and
1. A geolocation system, comprising:a geolocation server, wherein the geolocation server receives at least one signal from at least one GPS satellite; and a wireless communications device, comprising a GPS receiver section, the GPS receiver being selectively switchable between a standalone mode and at least one other mode for determining a geolocation of the wireless communications device, and the wireless communication device can selectively send the determined geolocation of the wireless communication device to the geolocation server, wherein the wireless communications device periodically transmits a frequency reference message to the GPS receiver. 2. The geolocation system of claim 1, wherein the at least one other mode is selected from a group comprising an autonomous mode, a network aided mode, a network centric mode, and a reverse aiding mode.3. The geolocation system of claim 2, wherein the frequency reference message comprises an error in frequency between a call processing clock and a base station clock.4. The geolocation system of claim 3, wherein a GPS clock in the GPS receiver is periodically compared to the call processing clock to determine a frequency offset of the GPS clock.5. The geolocation system of claim 4, wherein the periodic transmission of the frequency reference message and the periodic comparison of the GPS clock to the call processing clock have the same period.6. The geolocation system of claim 5, wherein the GPS receiver switches between the standalone mode and the at least one other mode when a predetermined event occurs.7. The geolocation system of claim 6, wherein the predetermined event is initial acquisition of at least one GPS satellite signal.8. The geolocation system of claim 7, wherein the selective switching of the GPS receiver switches the receiver from the at least one other mode to standalone mode.9. The geolocation system of claim 6, wherein the selective switching of the GPS receiver switches the receiver from standalone mode to the at least one other mode.10. The geolocation system of claim 9, wherein the predetermined event is a lapse of a predetermined amount of time without acquiring at least one GPS satellite signal.11. The geolocation system of claim 6, wherein the wireless communications device can receive information from a second source, the second source selected from a group comprising a bluetooth network, a Specialized Mobile Radio network, a Personal Communication System (PCS) network, a wireless Local Area Network, an infrared network, a paging network, a two-way paging network, and an FM broadcast network.12. The geolocation system of claim 2, wherein the frequency reference message steers the call processing clock onto the base station clock, and the frequency reference message is only sent once to the wireless communications device.13. The geolocation system of claim 12, wherein a GPS clock in the GPS receiver is periodically compared to the call processing clock to determine a frequency offset of the GPS clock.14. The geolocation system of claim 13, wherein the GPS receiver switches between the standalone mode and the at least one other mode when a predetermined event occurs.15. The geolocation system of claim 14, wherein the predetermined event is initial acquisition of at least one GPS satellite signal.16. The geolocation system of claim 15, wherein the selective switching of the GPS receiver switches the receiver from the at least one other mode to standalone mode.17. The geolocation system of claim 14, wherein the selective switching of the GPS receiver switches the receiver from standalone mode to the at least one other mode.18. The geolocation system of claim 17, wherein the predetermined event is a lapse of a predetermined amount of time without acquiring at least one GPS satellite signal.19. The geolocation system of claim 14, wherein the wireless communications device can receive information from a second source, the second source selected from a group comprising a bluetooth network, a Specialized Mobile Radio network, a Personal Communication System (PCS) network, a wireless Local Area Network, an infrared network, a paging network, a two-way paging network, and an FM broadcast network.20. A method for determining the geolocation of a device, comprising:receiving at least one signal from at least one GPS satellite at the device, wherein the device can be selectively switched between a standalone mode and at least one other mode; periodically transmitting a frequency reference message to the device; and determining the geolocation of the device using the at least one signal and the frequency reference message. 21. A geolocation system having a call processing clock and base station clock, the geolocation system comprising:a geolocation server, wherein the geolocation server receives at least one signal from at least one GPS satellite; and a wireless communications device, comprising a GPS receiver section, the GPS receiver being selectively switchable between a standalone mode and at least one other mode for determining a geolocation of the wireless communications device, the at least one other mode is selected from a group comprising an autonomous mode, a network aided mode, a network centric mode, and a reverse aiding mode, the wireless communications device periodically transmit a frequency reference message to the GPS receiver section, and wherein the frequency reference message steers the call processing clock onto the base station clock. 22. The geolocation system of claim 21, wherein the frequency reference message comprises an error in frequency between the call processing clock and the base station clock.23. The geolocation system of claim 22, wherein a GPS clock in the GPS receiver is periodically compared to the call processing clock to determine a frequency offset of the GPS clock.24. The geolocation system of claim 23, wherein the periodic transmission of the frequency reference message and the periodic comparison of the GPS clock to the call processing clock have the same period.25. The geolocation system of claim 24, wherein the GPS receiver switches between the standalone mode and the at least one other mode when a predetermined event occurs.26. The geolocation system of claim 25, wherein the predetermined event is initial acquisition of at least one GPS satellite signal.27. The geolocation system of claim 26, wherein the selective switching of the GPS receiver switches the receiver from the at least one other mode to standalone mode.28. The geolocation system of claim 27, wherein the selective switching of the GPS receiver switches the receiver from standalone mode to the at least one other mode.29. The geolocation system of claim 28, wherein the predetermined event is a lapse of a predetermined amount of time without acquiring at least one GPS satellite signal.30. The geolocation system of claim 25, wherein the wireless communications device can receive information from a second source, the second source selected from a group comprising a bluetooth network, a Specialized Mobile Radio network, a Personal Communication System (PCS) network, a wireless Local Area Network, an infrared network, a paging network, a two-way paging network, and an FM broadcast network.31. The geolocation system of claim 21, wherein the frequency reference message is only sent once to the wireless communications device.32. The geolocation system of claim 31, wherein a GPS clock in the GPS receiver is periodically compared to the call processing clock to determine a frequency offset of the GPS clock.33. The geolocation system of claim 32, wherein the GPS receiver switches between the standalone mode and the at least one other mode when a predetermined event occurs.34. The geolocation system of claim 33, wherein the predetermined event is initial acquisition of at least one GPS satellite signal.35. The geolocation system of claim 34, wherein the selective switching of the GPS receiver switches the receiver from the at least one other mode to standalone mode.36. The geolocation system of claim 33, wherein the selective switching of the GPS receiver switches the receiver from standalone mode to the at least one other mode.37. The geolocation system of claim 36, wherein the predetermined event is a GPS lapse of a predetermined amount of time without acquiring at least one GPS satellite signal.38. The geolocation system of claim 33, wherein the wireless communications device can receive information from, a second source, the second source selected from a group comprising a bluetooth network, a Specialized Mobile Radio network, a Personal Communication System (PCS) network, a wireless Local Area Network, an infrared network, a paging network, a two-way paging network, and an FM broadcast network.39. A geolocation system having a call processing clock and base station clock, the geolocation system comprising:a geolocation server, wherein the geolocation server receives at least one signal from at least one GPS satellite; and a wireless communications device, comprising a GPS receiver section, the GPS receiver comprising a GPS clock, the GPS receiver being selectively switchable between a standalone mode and at least one other mode for determining a geolocation of the wireless communications device, the GPS clock in the GPS receiver is periodically compared to the call processing clock to determine a frequency offset of the GPS clock, wherein the wireless communications device periodically transmits a frequency reference message to the GPS receiver, wherein the periodic transmission of the frequency reference message and the periodic comparison of the GPS clock to the call processing clock have the same period. 40. A geolocation system having a call processing clock and base station clock, the geolocation system comprising:a geolocation server, wherein the geolocation server receives at least one signal from at least one GPS satellite; and a wireless communications device, comprising a GPS receiver section, the GPS receiver being selectively switchable between a standalone mode and at least one other mode for determining a geolocation of the wireless communications device, wherein the at least one other mode is selected from a group comprising an autonomous mode, a network aided mode, a network centric mode, and a reverse aiding mode, wherein the wireless communications device periodically transmits a frequency reference message to the GPS receiver, wherein the frequency reference message comprises an error between a call processing clock and a base station clock, wherein a GPS clock in the GPS receiver is periodically compared to the call processing clock to determine a frequency offset of the GPS clock, and wherein the periodic transmission of the frequency reference message and the periodic comparison of the GPS clock to the call processing clock have the same period. 41. The geolocation system of claim 40, wherein the GPS receiver switches between the standalone mode and the at least one other mode when a predetermined event occurs.42. The geolocation system of claim 41, wherein the predetermined event is initial acquisition of at least one GPS satellite signal.43. The geolocation system of claim 42, wherein the selective switching of the GPS receiver switches the receiver from the at least one other mode to standalone mode.44. The geolocation system of claim 41, wherein the selective switching of the GPS receiver switches the receiver from standalone mode to the at least one other mode.45. The geolocation system of claim 44, wherein the predetermined event is a lapse of a predetermined amount of time without acquiring at least one GPS satellite signal.46. The geolocation system of claim 41, wherein the wireless communications device can receive information from a second source, the second source selected from a group comprising a bluetooth network, a Specialized Mobile Radio network, a Personal Communication System (PCS) network, a wireless Local Area Network, an infrared network, a paging network, a two-way paging network, and an FM broadcast network.47. The geolocation system of claim 40, wherein the frequency reference message steers the call processing clock onto the base station clock, and the frequency reference message is only sent once to the wireless communications device.48. The geolocation system of claim 47, wherein a GPS clock in the GPS receiver is periodically compared to the call processing clock to determine a frequency offset of the GPS clock.49. The geolocation system of claim 48, wherein the GPS receiver switches between the standalone mode and the at least one other mode when a predetermined event occurs.50. The geolocation system of claim 49, wherein the predetermined event is initial acquisition of at least one GPS satellite signal.51. The geolocation system of claim 50, wherein the selective switching of the GPS receiver switches the receiver from the at least one other mode to standalone mode.52. The geolocation system of claim 49, wherein the selective switching of the GPS receiver switches the receiver from standalone mode to the at least one other mode.53. The geolocation system of claim 52, wherein the predetermined event is a lapse of a predetermined mount of time without acquiring at least one GPS satellite signal.54. The geolocation system of claim 49, wherein the wireless communications device can receive information from a second source, the second source selected from a group comprising a bluetooth network, a Specialized Mobile Radio network, a Personal Communication System (PCS) network, a wireless Local Area Network, an infrared network, a paging network, a two-way paging network, and an FM broadcast network.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (35)
David S. Breed ; Wendell C. Johnson ; Wilbur E. Duvall, Accident avoidance system.
Bates, Cary Lee; Crenshaw, Robert James; Day, Paul Reuben; Santosuosso, John Matthew, Enhanced vehicle hazard warning and safety features integrated with an onboard navigation system.
Schuchman Leonard (Potomac MD) Bruno Ronald (Arlington VA) Rennard Robert (San Martin CA) Moses Charles (Catonsville MD), Hybrid GPS/data line unit for rapid, precise, and robust position determination.
Garin, Lionel Jacques; Chadha, Kanwar; Turetzky, Gregory Bret; Pande, Ashutosh, Information transfer in a multi-mode global positioning system used with wireless networks.
Lionel Jacques Garin ; Kanwar Chadha ; Gregory Bret Turetzky ; Ashutosh Pande, Information transfer in a multi-mode global positioning system used with wireless networks.
Durboraw ; III Isaac Newton ; Leopold Raymond Joseph, Method and apparatus for detecting spread spectrum signals using a signal from a secondary source.
Samir S. Soliman, Method and apparatus for determining position location using reduced number of GPS satellites and synchronized and unsynchronized base stations.
Christopher H. Kingdon ; Bagher R. Zadeh ; Jan Lennert Kransmo, System and method for provisioning assistance global positioning system information to a mobile station.
Pitt, Lance Douglas; DeLapp, Daniel D.; Lawrence, Sarah Jean, Cellular augmented radar/laser detection using local mobile network within cellular network.
Pitt, Lance Douglas; Lamprecht, Leslie Johann; Martin, Jeffrey Thomas, Culled satellite ephemeris information based on limiting a span of an inverted cone for locating satellite in-range determinations.
Pitt, Lance Douglas; Lamprecht, Leslie Johann; Martin, Jeffrey Thomas, Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas.
Pitt, Lance Douglas; Lamprecht, Leslie Johann; Martin, Jeffrey Thomas, Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas.
Pitt, Lance Douglas; Lamprecht, Leslie Johann; Martin, Jeffrey Thomas, Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas.
Pitt,Lance Douglas; Lamprecht,Leslie Johann; Martin,Jeffrey Thomas, Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas.
LaMance, James W.; Eagen, Maria; Roy-MacHabee, Guylain, Distributed orbit modeling and propagation method for a predicted and real-time assisted GPS system.
LaMance, James W.; Eagen, Maria; Roy-MacHabee, Guylian, Distributed orbit modeling and propagation method for a predicted and real-time assisted GPS system.
Dickinson, Richard; Hines, Gordon John; Croy, Jonothan, Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging.
Dickinson, Richard; Hines, John Gordon; Croy, Jonathan, Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging.
Pitt,Lance Douglas; Lamprecht,Leslie Johann; Martin,Jeffrey Thomas, Other cell sites used as reference point to cull satellite ephemeris information for quick, accurate assisted locating satellite location determination.
Rhodes, Jeffrey C.; Luo, Tong; Burton, Victor; Conner, Christine, Public safety access point (PSAP) selection for E911 wireless callers in a GSM type system.
Sharp, Christopher Brooke; McCarthy, Brendan A.; Slack, Stuart; Guenther, Carsten; Lin, Jeff; Butler, Rob, Remotely receiving and communicating commands to a mobile device for execution by the mobile device.
D'Souza, Myron; Hines, Gordon John; Bartnik, David; Hannan, Joseph; Groen, Joel; Wells, William, Roaming gateway enabling location based services (LBS) roaming for user plane in CDMA networks without requiring use of a mobile positioning center (MPC).
Chang, Steve; Pande, Ashutosh; Garin, Lionel Jacques; Chadha, Kanwar; Peng, Leon Kuo-Liang; Zhang, Gengsheng; Vantalon, Nicolas Patrick; Turetzky, Gregory, System and method for providing location based services over a network.
Pitt, Lance Douglas; DeLapp, Daniel D.; Lawrence, Sarah Jean, Transmitter augmented radar/laser detection using local mobile network within a wide area network.
Mitchell, Jr., Donald L.; Marshall, Roger S.; Singer, Andrew; Aryana, Firdaus, Wireless emergency caller profile data delivery over a legacy interface.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.