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    11.
    发明专利
    未知

    公开(公告)号：BR9904324A

    公开(公告)日：2000-09-05

    申请号：BR9904324

    申请日：1999-09-23

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHENG TERRY SI-FONG ,  HUANG CHING YAO

    IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04Q7/38

    Abstract: A code-division multiple access power control for paging channel power and initial traffic channel power dynamically determines optimum initial channel power in accordance with pilot signal strength of a pilot signal as received at a mobile station and current forward link loading of the desired sector. The optimum initial paging channel power and initial traffic channel power may be determined either at a base station or a mobile switching center of the mobile communication system. A paging signal or call is transmitted from the base station to the mobile station over a paging channel and a traffic channel at the optimum paging channel and initial traffic channel power.

    12.
    发明专利
    未知

    公开(公告)号：BR9903623A

    公开(公告)日：2000-08-29

    申请号：BR9903623

    申请日：1999-08-12

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHENG TERRY SI-FONG ,  HUANG CHING YAO ,  KOO YUEN-YIN ,  LIN SHEN-DE ,  WEAVER CARL F

    IPC: H04B7/26 ,  H04W36/14 ,  H04Q7/36

    Abstract: A procedure for triggering a handdown or a handoff a mobile station served by a base station of a cellular wireless communication system. A tolerable path loss for signal links between the base station and a mobile station located within the base station's cell, is initially determined. A control signal is radiated at a known transmit power level from the base station over its cell. A receive power level threshold is determined for the control signal for reception by the mobile station, according to the transmit power level and the tolerable path loss. A handoff of the mobile station is triggered after deriving the received power level of the control signal at the mobile station, and determining that the received power level is less than the receive power level threshold. In one embodiment, a mobile station reports to a serving base station only after the former determines that the received power level of a control signal from the base station is less than a threshold level initially provided to the mobile station by the base station. The procedure is applicable, e.g., to base station cells of a first CDMA cellular system which cells border on cells of an analog (AMPS) or a second CDMA cellular system.

    13.
    发明专利
    未知

    公开(公告)号：BR9903398A

    公开(公告)日：2000-08-29

    申请号：BR9903398

    申请日：1999-06-30

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHENG TERRY SI-FONG ,  HUANG CHING YAO ,  JIANG FRANCES ,  YAO YUGI ,  ZHU LILY

    IPC: H04J13/02 ,  H04B7/26 ,  H04J13/00 ,  H04Q7/22 ,  H04Q7/24 ,  H04Q7/26 ,  H04Q7/30 ,  H04Q7/36

    Abstract: PURPOSE: A method is provided to control a traffic load by for a user of an existing base station. CONSTITUTION: The control method of a cell traffic load of a base station comprises steps: that a subscriber station obtains an operating code from the base station by receiving a pilot signal from the base station; of defining a pilot signal boundary about the base station; that the subscriber station obtained the pilot signal obtains a traffic channel allocation from the base station by receiving a paging signal from the base station; of monitoring a traffic load state of the base station; of changing the boundary of the valid area of the paging signal inside the pilot signal boundary.

    15.
    发明专利
    未知

    公开(公告)号：DE60120331T2

    公开(公告)日：2007-05-24

    申请号：DE60120331

    申请日：2001-06-18

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHENG TERRY SI-FONG ,  JIANG FRANCES ,  VITEBSKY STANLEY

    IPC: H04L1/00 ,  H04W28/22

    Abstract: A method for determining the reverse link data Rate Limit for mobile stations active on the reverse link of a High Data Rate system is disclosed. In the ideal case, the Rate Limit is based on only the number of mobile stations located in a common sector that are actually active on the reverse link. Currently, the Rate Limit is determined from the total number of mobile stations in a common sector where the total includes mobiles that are transmitting and receiving. Thus, the current method includes mobile stations that are active on the forward link and may not be active on the reverse link. In this invention, a more optimum method of estimating the reverse link loading is obtained from calculations which includes only the mobile stations which are active on the reverse link. An estimate of the reverse link loading of the mobile stations in a common cell is obtained by adding together the data rates of the data sent from each mobile in a common sector during a common frame. This aggregate rate of data during the frame is filtered to minimize irregularities by using the moving average of an infinite impulse response filter and then normalized. The normalized result is a percentage of the maximum achievable aggregate reverse link rate. The final result is compared with a set of threshold values to obtain the maximum Rate Limit that is then set for each mobile station.

    17.
    发明专利
    未知

    公开(公告)号：BR9903869A

    公开(公告)日：2000-08-29

    申请号：BR9903869

    申请日：1999-07-29

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHENG TERRY SI-FONG ,  HUANG CHING YAO

    IPC: H04B7/26 ,  H04W36/18 ,  H04W36/38 ,  H04Q7/36

    Abstract: A code-division multiple access base station assisted quality soft handoff algorithm screens or filters out candidate pilot signals from a pilot strength measurement message generated by a mobile station and provides the revised pilot strength measurement message to the mobile switching center of the mobile communication system. The mobile switching center subsequently conducts handoff processing in accordance with the revised pilot strength measurement message. If the combined pilot signal strength of the existing mobile station active legs is less than a first threshold, the current pilot strength measurement message is maintained. If the combined pilot signal strength of the existing mobile station active legs is greater than or equal to the first threshold, all candidate pilot signals are deleted from the pilot strength measurement message such that only pilot signals of existing mobile station active legs remain. Also, if the pilot signal strength of a candidate pilot signal is greater than a second threshold, the candidate pilot signal is added to the pilot strength measurement message. The number of handoffs per call are reduced using the revised pilot strength measurement message such that forward link power and network processing resources are conserved.

    CDMA power control for paging and initial traffic channel power
    18.
    发明专利
    CDMA power control for paging and initial traffic channel power 未知

    公开(公告)号：AU5009899A

    公开(公告)日：2000-04-06

    申请号：AU5009899

    申请日：1999-09-23

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHENG TERRY SI-FONG ,  HUANG CHING YAO

    IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04Q7/30

    Abstract: A code-division multiple access power control for paging channel power and initial traffic channel power dynamically determines optimum initial channel power in accordance with pilot signal strength of a pilot signal as received at a mobile station and current forward link loading of the desired sector. The optimum initial paging channel power and initial traffic channel power may be determined either at a base station or a mobile switching center of the mobile communication system. A paging signal or call is transmitted from the base station to the mobile station over a paging channel and a traffic channel at the optimum paging channel and initial traffic channel power.

    19.
    发明专利
    未知

    公开(公告)号：DE69909571T2

    公开(公告)日：2004-06-24

    申请号：DE69909571

    申请日：1999-09-21

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CHENG TERRY SI-FONG ,  HUANG CHING YAO

    IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26

    Abstract: A code-division multiple access power control for paging channel power and initial traffic channel power dynamically determines optimum initial channel power in accordance with pilot signal strength of a pilot signal as received at a mobile station and current forward link loading of the desired sector. The optimum initial paging channel power and initial traffic channel power may be determined either at a base station or a mobile switching center of the mobile communication system. A paging signal or call is transmitted from the base station to the mobile station over a paging channel and a traffic channel at the optimum paging channel and initial traffic channel power.

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