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    METHOD FOR IDENTIFYING GEOGRAPHIC POSITION OF PATTERN RECOGNITION BASE
    1.
    发明专利
    METHOD FOR IDENTIFYING GEOGRAPHIC POSITION OF PATTERN RECOGNITION BASE 失效

    公开(公告)号：JP2000092556A

    公开(公告)日：2000-03-31

    申请号：JP23767999

    申请日：1999-08-25

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： HUA CHEN BYRON ,  CHING CHIANG TUNG ,  FREIDENFELDS JOHN

    IPC: G01S5/02 ,  G01S19/48 ,  H04W64/00 ,  H04Q7/34

    Abstract: PROBLEM TO BE SOLVED: To identify the position of a mobile equipment caller in a cellular service area under various RF propagation conditions. SOLUTION: This method identifies the geographic position of a mobile terminal 30. The technology includes a step for receiving the characteristics of a set from the terminal 30, a step for comparing the characteristics of the set received from the terminal 30 with the attributes of the set for each cell and a step for identifying one of subcells having attributes most coincident with the characteristics of the set out of plural subcells as a subcell located on the terminal 30. Discrete RF attributes such as average pilot intensity, chip offset and pilog intensity are included in the attributes of the set. A continuous attribute such as a signature waveform can be also used as an attribute of the set.

    NETWORK EXPANSION BY UTILIZATION OF GEOGRAPHIC POSITION INFORMATION
    2.
    发明专利
    NETWORK EXPANSION BY UTILIZATION OF GEOGRAPHIC POSITION INFORMATION 失效

    公开(公告)号：JP2001211474A

    公开(公告)日：2001-08-03

    申请号：JP2000356855

    申请日：2000-11-24

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： HUA CHEN BYRON ,  CHIANG TUNG CHIN ,  FREIDENFELDS JOHN ,  TEKIN IBRAHIM

    IPC: G01S5/12 ,  H04B7/06 ,  H04B7/08 ,  H04B7/10 ,  H04B7/26 ,  H04L12/28 ,  H04W24/00 ,  H04Q7/36 ,  H04Q7/22 ,  H04Q7/34

    Abstract: PROBLEM TO BE SOLVED: To provide a method and a device which expand the network performance of a radio network by utilizing generally obtainable geographic position information. SOLUTION: This method is for expanding the network performance of the radio network and consists of a step in which the current position of a mobile device in the radio network is decided and a step in which the network performance of the radio network is expanded by utilizing the current position of the mobile device. For more detailed information, signal quality in an area where calls are discarded is improved by deciding the area where the calls are discarded due to the use of the geographical position information. An intelligent antenna is further formed by utilizing the geographic position information for beam steering so that capacity increase and interference reduction can be accomplished. They can also be accomplished by utilizing the geographic position information in a down tilt technique.

    TIMING CALIBRATION METHOD
    3.
    发明专利
    TIMING CALIBRATION METHOD 失效

    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

    IPC: G01C21/00 ,  G01S1/00 ,  G01S5/12 ,  G01S19/14 ,  G01S19/25 ,  G04G7/02 ,  H04B7/155 ,  G01S5/14

    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.

    TIMING CALIBRATION METHOD
    4.
    发明专利
    TIMING CALIBRATION METHOD 失效

    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

    IPC: G01S3/46 ,  G01S19/06 ,  G01S19/23 ,  G01S5/14

    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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