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    21.
    发明专利
    未知

    公开(公告)号：DE602004022431D1

    公开(公告)日：2009-09-17

    申请号：DE602004022431

    申请日：2004-09-21

    Applicant: QUALCOMM INC

    Inventor： JALALI AHMAD

    IPC: H04L12/56 ,  H04J11/00 ,  H04J13/00 ,  H04J13/18 ,  H04L12/24 ,  H04W28/14 ,  H04W28/22 ,  H04W28/26 ,  H04W72/02 ,  H04W74/08 ,  H04W84/06

    Abstract: In a code division multiple access (CDMA) communications system including one or more terminals (such as customer premise equipments, CPEs) that communicate with a node (such as an Internet gateway) via at least a random access channel and a reservation-oriented channel, various schemes of managing communications traffic among the channels are provided. Decisions as to the channel on which a given terminal may transmit may be based on: traffic statistics (such as packet size or average data rate over a time period), traffic content (such as packet type), the terminal's output buffer loading (queue state, or “Q-state”), a history of the terminal's output buffer loading (one or more Q-states), and so forth. In one application, decisions in managing traffic in a live user's web browsing sessions may involve intelligent ascertainment of whether a given terminal is busy based on traffic analysis or output buffer loading.

    22.
    发明专利
    未知

    公开(公告)号：DE60232721D1

    公开(公告)日：2009-08-06

    申请号：DE60232721

    申请日：2002-05-07

    Applicant: QUALCOMM INC

    Inventor： JALALI AHMAD

    IPC: H04B7/00 ,  H04B7/26 ,  H04B7/04 ,  H04B7/10 ,  H04W16/00 ,  H04W72/08

    Abstract: According to a disclosed embodiment, a first plurality of pilot signals of a first polarization is received and ranked. Subsequently, a second plurality of pilot signals of a second polarization is received and ranked. Following, a pilot signal from the first and second pluralities of pilot signals is selected based on a signal quality measurement such as a signal to interference ratio. Moreover, a system can be constructed comprising antennas configured to receive pilot signals of a first and a second polarization. The system further comprises a receiver configured to demodulate the pilot signals and a CPU configured to rank the pilot signals and to select a pilot signal based on a signal quality measurement. Communication quality is improved by communicating with the base transceiver station transmitting the pilot signal providing the highest signal quality measurement.

    Access channel with constrained arrival times
    23.
    发明专利
    Access channel with constrained arrival times 未知

    公开(公告)号：AU2005222374B2

    公开(公告)日：2009-07-09

    申请号：AU2005222374

    申请日：2005-03-08

    Applicant: QUALCOMM INC

    Inventor： FERNANDEZ-CORBATON IVAN JESUS ,  JALALI AHMAD ,  SCHIFF LEONARD NORMAN ,  ANTONIO FRANKLIN PETER

    IPC: H04W74/04 ,  H04B1/707

    Abstract: Systems, methods and apparatus for configuring and accessing a random access channel in a CDMA communication system are disclosed. The number of users supported by a random access channel can be optimized by assigning a distinct time of arrival to each of a plurality of users. Each of the users can be time synchronized and can transmit data at a time that compensates for a propagation delay to allow the data to arrive at the destination receiver at the assigned time. In a CDMA system, each of the users can transmit data that is spread with the same spreading code, provided the cross correlation properties of the code are sufficient to allow identification of a source that is time offset relative to another user. The time of arrival can be determined based on the number of active users, and can be assigned as often as each transmission by each user.

    24.
    发明专利
    未知

    公开(公告)号：AT425604T

    公开(公告)日：2009-03-15

    申请号：AT01927012

    申请日：2001-04-13

    Applicant: QUALCOMM INC

    Inventor： JALALI AHMAD ,  ESTEVES EDUARDO ,  SINDHUSHAYANA NAGABHUSHANA ,  BLACK PETER ,  ATTAR RASHID

    IPC: H04L1/18 ,  H04L1/16 ,  H04Q7/38

    Abstract: A method for wireless communication, comprising: receiving data in multiple forward link timeslots; determining a quality metric of the received data; requesting retransmission of the data via a first request scheme if the quality metric indicates the data has not been received correctly; and if retransmission is requested and the data is not received correctly, requesting retransmission of the data via a second request scheme.

    Non-wireless communication using sound
    26.
    发明专利
    Non-wireless communication using sound 未知

    公开(公告)号：AU2004306109B2

    公开(公告)日：2008-06-12

    申请号：AU2004306109

    申请日：2004-09-23

    Applicant: QUALCOMM INC

    Inventor： STEENSTRA JACK ,  JALALI AHMAD ,  JACOBS PAUL E

    IPC: H04B1/38 ,  H04M1/725

    Abstract: Method and apparatus are disclosed to allow non-wireless transmission or reception of data from one device to at least another device. More particularly, in one embodiment, a jack of a first device is configured to receive incoming analog signals encoded with digital data from the second device and to transmit outgoing analog signals encoded with digital data to the second device. The first device may also comprise a first conversion unit configured to encode digital data into the outgoing analog signals and a second conversion unit configured to recover digital data from the incoming analog signals.

    SUPPRESSING CROSS-POLARIZATION INTERFERENCE IN AN ORTHOGONALCOMMUNICATION LINK
    30.
    发明专利
    SUPPRESSING CROSS-POLARIZATION INTERFERENCE IN AN ORTHOGONALCOMMUNICATION LINK 未知

    公开(公告)号：CA2557591A1

    公开(公告)日：2005-09-09

    申请号：CA2557591

    申请日：2005-02-25

    Applicant: QUALCOMM INC

    Inventor： JALALI AHMAD ,  SCHIFF LEONARD NORMAN ,  CHAKRAVARTY SUMANTRA

    IPC: H04B1/707 ,  H04B7/14 ,  H04B7/216 ,  H04J11/00 ,  H04J13/00

    Abstract: An OCDMA transmission arrangement involves encoding both first and second nominally orthogonal polarization signals with a same long code, and transmitting the long-encoded first and second nominally orthogonal polarization signals from respective first and second transmission sources to at least one destination. A corresponding OCDMA demodulating arrangement demodulates the first and second nominally orthogonal polarization signals that were transmitted from respective first and second transmission sources after having been encoded with the same long code. The demodulation arrangement involves receiving the encoded first and second nominally orthogonal polarization signals, and applying the same long code to the received encoded first and second nominally orthogonal polarization signals.

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