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    142.
    发明专利
    未知

    公开(公告)号：NO20031445L

    公开(公告)日：2003-05-20

    申请号：NO20031445

    申请日：2003-03-28

    Applicant: QUALCOMM INC

    Inventor： HOLTZMAN JACK M ,  BAO GANG

    IPC: H04B7/005 ,  H04B7/26 ,  H04W52/22 ,  H04W52/34 ,  H04B

    Abstract: Techniques to (more accurately) estimate the transmit power available for data service in a future time period (e.g., the next frame). In accordance with one aspect, variation in the available transmit power over time is estimated. A first margin is then computed and used to account for the estimated variation in the available transmit power. The available transmit power at a future time instance (e.g., the beginning of the next frame) is predicted and reduced by the first margin to derive a more accurate estimate of the available transmit power for the next frame. In accordance with another aspect, variation in the required transmit power for a particular data user is estimated and used in scheduling data transmission to this data user. A second margin can be computed and used to account for the estimated variation in the required transmit power for the data user. Whereas the first margin accounts for variation in the (overall) available transmit power, the second margin is specific to the particular link conditions experienced by the data user.

    Method and apparatus for reducing peak-to-average ration in a cdma communication system.
    143.
    发明专利
    Method and apparatus for reducing peak-to-average ration in a cdma communication system. 未知

    公开(公告)号：HK1041750A1

    公开(公告)日：2002-07-19

    申请号：HK02103351

    申请日：2002-05-03

    Applicant: QUALCOMM INC

    Inventor： WILLENEGGER SERGE ,  HOLTZMAN JACK M ,  SHANBHAG ABHIJIT

    IPC: H04B1/707 ,  H04J11/00 ,  H04Q7/38 ,  H04B ,  H04J

    Abstract: The present invention is a novel and improved method and apparatus for reducing peak to average ratio in a system using auxiliary pilot channels as described in the TIA/EIA TR45.5 "cdma2000 ITU-R RTT Candidate Submission" to the ITU for consideration in the third generation wireless communication systems. A first method proposed in the present invention to deal with the above stated problem is to alter the phase of the auxiliary pilot channels to reduce to prevent the auxiliary pilot channels from adding constructively. A second method proposed in the present invention to deal with the above stated problem is to gate out the portion of the auxiliary pilot channels that add constructively. The present invention also proposes a novel demodulator design for receiving signals using the modified auxiliary pilot signals.

    Method and apparatus for scheduling packet data transmissions in a wireless communication system
    145.
    发明专利
    Method and apparatus for scheduling packet data transmissions in a wireless communication system 未知

    公开(公告)号：AU1779702A

    公开(公告)日：2002-06-11

    申请号：AU1779702

    申请日：2001-11-20

    Applicant: QUALCOMM INC

    Inventor： RAZOUMOV LEONID ,  HOLTZMAN JACK M

    IPC: H04L29/06 ,  H04L1/00 ,  H04M11/00 ,  H04W16/14 ,  H04W72/10 ,  H04W72/12 ,  H04W74/00 ,  H04L12/56

    Abstract: A method (18) for scheduling packet data transmissions in a wireless communication system wherein a per-user Priority Function (PF) (24) is based on a channel condition indicated by a Rate Request Indicator (RRI). The method also considers fairness criteria dictated by predetermined Quality of Service (QOS) requirements. In one embodiment, the rate request indicator is a Data Rate Request (DRR). In another embodiment, the rate request indicator is Carrier-to-Interference (C/I) information. In the exemplary embodiment, the base station calculates a Priority Function (PF) for the multiple mobile users. Each PF is a function of the rate request indicator and the projected throughput of a given mobile user. The PF values allow the base station to schedule active mobile units having pending data. The scheduling produces an approximately equal share of the allocated transmission time to the multiple mobile stations.

    146.
    发明专利
    未知

    公开(公告)号：NO20082303L

    公开(公告)日：2002-06-05

    申请号：NO20082303

    申请日：2008-05-20

    Applicant: QUALCOMM INC

    Inventor： CHEN TAO ,  HOLTZMAN JACK M

    IPC: H04B7/005 ,  H04B7/26 ,  H04W52/16 ,  H04W52/22 ,  H04W52/26 ,  H04W52/50 ,  H04L

    Abstract: A method and apparatus for selecting a favored transmission slot for communicating non-voice data in conjunction with a voice-data communication. The slot, reflecting a favored power level and transmission rate for transmitting the non-voice data on a supplemental channel, is selected based upon the transmission power levels for voice-data transmitted by a base station to a remote station on a fundamental channel. The favored transmission slot is selected without the remote station messaging information to the base station concerning frequency channel or interference information for the supplemental channel.

    149.
    发明专利
    未知

    公开(公告)号：NO20021653D0

    公开(公告)日：2002-04-08

    申请号：NO20021653

    申请日：2002-04-08

    Applicant: QUALCOMM INC

    Inventor： RAZOUMOV LEONID ,  HOLTZMAN JACK M ,  LUNDBY STEIN A

    IPC: H04L1/00 ,  H04B7/005 ,  H04B7/26 ,  H04L1/16 ,  H04L1/18 ,  H04B

    Abstract: Method and apparatus for transmitting a signal at a predetermined level of reliability using retransmission of erroneously transmitted frames so as to minimize total transmission energy. The transmitting station evaluates the frame error rate (FER) as a function of energy. Next, the transmitting station determines a combination of initial transmission energies and retransmission energies that will provide the target level of reliability while minimizing the total transmission energy employed in the initial transmission and the retransmissions. The transmitting station transmits a frame with an initial transmission energy. Employing conventional feedback methods the transmitting station is alerted to the occurrence of frame errors at the receiving station. The transmitting station upon notification of a frame error retransmits the frame with an energy determined to minimize the total energy required to transmit the frame with a predetermined level of reliability.

    Time offset technique for increasing the capacity of a cdma system.
    150.
    发明专利
    Time offset technique for increasing the capacity of a cdma system. 未知

    公开(公告)号：HK1038451A1

    公开(公告)日：2002-03-15

    申请号：HK01109179

    申请日：2001-12-28

    Applicant: QUALCOMM INC

    Inventor： LUNDBY STEIN A ,  TIEDEMANN EDWARD G JR ,  HOLTZMAN JACK M ,  TERASAWA DAISUKE

    IPC: H04B1/707 ,  H04B1/7097 ,  H04B7/005 ,  H04B ,  H04L

    Abstract: A method for limiting peak transmit power in a CDMA communication system by transmitting a first communication signal having a first high transmit power region, and transmitting a second communication signal having a second high transmit power region. A first and a second communication signal are time offset to prevent the first and second high transmit power regions from occurring simultaneously. Time shifting only a portion of the first and second communication signals is also taught. The first and second communication signals can also include respective first and second low transmit power regions. The time offset can be selected to align one of the first and second high transmit power regions with one of the first and second low transmit power regions. The total transmit power signal can be determined and the time offset can be selected to minimize a peak level of the total transmit power signal. The communication signals are separated into a plurality of portions and portions of the first and second communication signals are time offset to re-order the sequence of transmission of the plurality of portions.

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