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公开(公告)号：JP2002039751A
公开(公告)日：2002-02-06
申请号：JP2001137266
申请日：2001-05-08
Applicant: LUCENT TECHNOLOGIES INC
Inventor： VANNUCCI GIOVANNI , WOLNIANSKY PETER WASILY
Abstract: PROBLEM TO BE SOLVED: To provide a communication equipment and a method for indicating altitude of it. SOLUTION: Based on a first application example, a first communication equipment comprises a pressure sensor which measures a local atmospheric pressure at its place and a transceiver for communication with a second communication equipment. The transceiver accepts the atmospheric calibration information for calibrating local atmospheric pressure measured with the first communication equipment, and transmits the measured local atmospheric pressure to the second communication equipment. The first communication equipment further comprises a processor which estimates altitude where the equipment is placed using the measured local atmospheric pressure and the received atmospheric pressure calibration information.
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公开(公告)号：JP2001194443A
公开(公告)日：2001-07-19
申请号：JP2000343097
申请日：2000-11-10
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BARROSO CHRISTOPHER BURKE , HUA CHEN BYRON , VANNUCCI GIOVANNI
Abstract: PROBLEM TO BE SOLVED: To provide a method for obtaining an accurate global positioning satellite(GPS) by calibrating a frame boundary, while GPS timing is set as a reference. SOLUTION: Calibration of time is possible, by determining a time difference Δt between the GPS reference time (or a pulse) and an n-th frame boundary. The time difference Δt and a frame boundary identifier are supplied to all devices or a part of devices which are equipped with GPS receivers. As a result, the device equipped with the GPS itself be made to be synchronized with the GPS timing. When the device is synchronized with the GPS timing, it can retrieve a GPS signal, by using information which a geographical position server, such as a WAG server, supplies.
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公开(公告)号：JP2001183438A
公开(公告)日：2001-07-06
申请号：JP2000366456
申请日：2000-12-01
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BARROSO CHRISTOPHER BURKE , HUA CHEN BYRON , VANNUCCI GIOVANNI
Abstract: PROBLEM TO BE SOLVED: To provide a method for obtaining an accurate satellite navigation system (GPS) by particularly calibrating a frame boundary to the GPS timing in the geographical location in a radiocommunication system. SOLUTION: This method is typically composed of a stage for deciding calibration time by using a pseudo-range and a local time reference related to at least four detected artificial satellite signals and a stage for transmitting the calibration time, and this local time reference has the already known relationship with artificial satellite time. Time calibration is attained by deciding a time difference Δt between reference GPS time (or a pulse) and an (n)-th frame boundary.
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公开(公告)号：JPH11174142A
公开(公告)日：1999-07-02
申请号：JP25283498
申请日：1998-09-07
Applicant: LUCENT TECHNOLOGIES INC
Inventor： VANNUCCI GIOVANNI
Abstract: PROBLEM TO BE SOLVED: To obtain a wireless terminal that is less expensive than a conventional wireless terminal, can receive a weaker signal than that of the conventional wireless terminal, and can speedily determine a position. SOLUTION: A task for acquiring and treating a signal that is required for a conventional wireless terminal is divided between a wireless terminal 501 and an auxiliary system 505. Especially, conditions that are normally required in the conventional wireless terminal are shifted to the auxiliary system 505. The auxiliary system 505 provides information that is useful for the wireless terminal 501 through a wireless communication link 504. The auxiliary system 505 acquires information regarding an ephemeris of a satellite, partially treats it, and transmits it to a wireless terminal 501 in a format that is useful for the wireless terminal 501.
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公开(公告)号：JP2002006023A
公开(公告)日：2002-01-09
申请号：JP2001131568
申请日：2001-04-27
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DA REN , VANNUCCI GIOVANNI
Abstract: PROBLEM TO BE SOLVED: To provide a method by which the position of a radio terminal can be decided in a short time. SOLUTION: This invention is conceived by combining the code acquiring techniques for frequency domain and time domain with each other. This invention obtains the accurate timing basis of the radio terminal by detecting one GPS signal by using the technique for frequency domain and, thereafter, another GPS signal from the same or another satellite by using the technique for time domain. When this invention is used, such an advantage is obtained that the signals can be detected without maintaining any accurate and detailed timing basis in the radio terminal nor requiring high computational ability.
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Patent Agency Ranking
公开(公告)号：JPH11160412A
公开(公告)日：1999-06-18
申请号：JP25283398
申请日：1998-09-07
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RICHTON ROBERT ELLIS , VANNUCCI GIOVANNI
Abstract: PROBLEM TO BE SOLVED: To obtain an auxiliary system which mostly prevents costs and limitation in a conventional system, which decides the position of a wireless terminal, which is low-cost as compared with a conventional wireless terminal, which can receive a weak signal as compared with the conventional wireless terminal, and which realizes the wireless terminal capable of deciding the position quickly as compared with the conventional wireless terminal. SOLUTION: A task of signal acquisition and signal processing which are required by a conventional wireless terminal is divided into a wireless terminal 501 and an auxiliary system 505. Especially, a condition which is required normally from the conventional wireless terminal is shifted to the auxiliary system 505. The auxiliary system 505 provides information useful for the wireless terminal 501 through a wireless communication link 504. The auxiliary system 505 acquires information regarding the astronomical ephemeris of, a satellite, it processes the information partially, and it transmits the information to the wireless terminal 501 in a form which is useful for the wireless terminal 501.
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公开(公告)号：JPH10209914A
公开(公告)日：1998-08-07
申请号：JP1003098
申请日：1998-01-05
Applicant: LUCENT TECHNOLOGIES INC
Inventor： MACLELLAN JOHN AUSTIN , R ANTHONY SHOVER , VANNUCCI GIOVANNI , WRIGHT GREGORY ALAN
IPC: H04B5/02 , G06K7/00 , H04B1/59 , H04L27/20 , H04L27/233
Abstract: PROBLEM TO BE SOLVED: To eliminate the influence of noises, etc., of an oscillator by using an orthogonal phase shift key and also to extend this key to a higher dimension in an MBS(modulation back scatter) system. SOLUTION: An application processor 101 communicates with the question units 103 and 104 via a LAN 102, and the units 103 and 104 communicate with one or plural ones of tags 105 to 107. The unit 103 receives and fetches an information signal from the processor 101 and sends a message (down link message) and then the continuous wave radio signals to the tags. The tags modulate the received continuous wave radio signals via an MBS system. An antenna is switched to a reflector state from an absorber state for radiation of the radio frequency by a modulation signal. Thus, the communication to the question units from the tags via the MBS system is made possible.
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公开(公告)号：JP2001272454A
公开(公告)日：2001-10-05
申请号：JP2001026210
申请日：2001-02-02
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DA REN , VANNUCCI GIOVANNI
Abstract: PROBLEM TO BE SOLVED: To provide a device and a method, using navigation data, which enable even a weak GPS signal affected by an obstacle such as a structure, etc., to be used for position measurement. SOLUTION: A radio terminal increases its total signal detection sensitivity by increasing integration intervals (e.g. >=20 ms) by performing data wipe-off operation by using estimated navigation data. After an intense GPS signal is detected, the intense GPS signal is demodulated to compute a satellite position table including navigation data. Then the demodulated navigation data are matched against known features of navigation data to estimate navigation data as to a weak GPS signal. Then the estimated navigation data are used to increase the integration intervals of the weak GPS signal, so that even the weak GPS signal can be detected by the ratio terminal.
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9.发明专利
公开(公告)号：JP2001108736A
公开(公告)日：2001-04-20
申请号：JP2000262275
申请日：2000-08-31
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DA REN , VANNUCCI GIOVANNI
Abstract: PROBLEM TO BE SOLVED: To facilitate detection for plural satellites even when an integration time of a correlator of a GPS receiver is long. SOLUTION: An area for a satellite signal searched by the GPS receiver and a code phase searching range are effectively narrowed based on information accumulated in the last search and a search message to facilitate the detection for the satellites, and the satellites are thereby searched successively.
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公开(公告)号：JPH11312928A
公开(公告)日：1999-11-09
申请号：JP5782399
申请日：1999-03-05
Applicant: LUCENT TECHNOLOGIES INC
Inventor： VANNUCCI GIOVANNI
Abstract: PROBLEM TO BE SOLVED: To prevent a bad influence of nonlinear distortion of an amplifier at the time of amplifying a signal by monitoring the signal and generating a waveform for correction to delay the signal at the time of excess of the amplitude of this signal over a threshold and adding the waveform for correction and the delayed signal. SOLUTION: The amplitude of an RF signal being processed by a distortion giving device 510 is monitored at the entrance of the distortion giving device 510 by a clip detector 514. If it is judged that the monitored amplitude of the RF signal exceeds a clip threshold, the clip detector 514 sends a numerical value and a generation timing, which correspond to the monitored peak amplitude of the RF signal, to a pulse generator 516. The pulse generator 516 receives the output from the clip detector 514, and it generates a pulse output if it exceeds the clip threshold. Though the RF signal for correction is distorted, the distortion is adjusted before or after amplification in an RF power amplifier 540.
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