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    11.
    发明专利
    未知

    公开(公告)号：DE60213772D1

    公开(公告)日：2006-09-21

    申请号：DE60213772

    申请日：2002-02-21

    Applicant: QUALCOMM INC

    Inventor： JOSHI ABHAY ,  ACHOUR BAAZIZ ,  GLAZKO SERGUEI

    IPC: H04L25/02 ,  H04B7/26 ,  H04L12/56 ,  H04L29/08 ,  H04W28/22 ,  H04W72/04

    Abstract: The present invention provides a method and apparatus for maximizing throughput of a data call in a wireless communication system in which data is transmitted from a wireless station, such as a mobile station, on multiple assigned channels in accordance with a known transmission standard, such as IS-95B. The multiple assigned channels include a fundamental channel and at least one supplemental channel. Data is formatted into variable rate data frames and transmitted on the fundamental channel and the supplemental channel. A wireless receiver, such as a base station, receives the multiple assigned channels. The wireless receiver demodulates and decodes data frames associated with each of the multiple assigned channels. The wireless receiver determines a likely initial data rate for each demodulated and decode data frame. The wireless receiver correlates all of the likely data rates, by comparison to one another and to a relevant transmission protocol standard, to determine a maximum likelihood combination of data rates. The maximum likelihood combination of data rates includes a maximum likelihood data rate corresponding to each likely data rate. Decoded data frames are invalidated and erased when the likely data frame rates do not match corresponding maximum likelihood data rates.

    12.
    发明专利
    未知

    公开(公告)号：BR0207391A

    公开(公告)日：2004-12-28

    申请号：BR0207391

    申请日：2002-02-21

    Applicant: QUALCOMM INC

    Inventor： JOSHI ABHAY ,  ACHOUR BAAZIZ ,  GLAZKO SERGUEI

    IPC: H04B7/26 ,  H04L12/56 ,  H04L29/08 ,  H04W28/22 ,  H04W72/04 ,  H04L25/02

    Abstract: The present invention provides a method and apparatus for maximizing throughput of a data call in a wireless communication system in which data is transmitted from a wireless station, such as a mobile station, on multiple assigned channels in accordance with a known transmission standard, such as IS-95B. The multiple assigned channels include a fundamental channel and at least one supplemental channel. Data is formatted into variable rate data frames and transmitted on the fundamental channel and the supplemental channel. A wireless receiver, such as a base station, receives the multiple assigned channels. The wireless receiver demodulates and decodes data frames associated with each of the multiple assigned channels. The wireless receiver determines a likely initial data rate for each demodulated and decode data frame. The wireless receiver correlates all of the likely data rates, by comparison to one another and to a relevant transmission protocol standard, to determine a maximum likelihood combination of data rates. The maximum likelihood combination of data rates includes a maximum likelihood data rate corresponding to each likely data rate. Decoded data frames are invalidated and erased when the likely data frame rates do not match corresponding maximum likelihood data rates.

    13.
    发明专利
    未知

    公开(公告)号：BR0114302A

    公开(公告)日：2004-08-24

    申请号：BR0114302

    申请日：2001-09-27

    Applicant: QUALCOMM INC

    Inventor： CHEN QINGXIN ,  ACHOUR BAAZIZ

    IPC: H04W36/08 ,  H04Q7/38

    Abstract: A method and apparatus for decreasing the probability of dropping a call during a hard handoff procedure in a wireless communication system. The two primary functions of the candidate frequency (CF) search method and apparatus of the present invention are to detect the strong pilots on a candidate frequency in the area of the mobile station and to maintain adequate service quality during the CF search.

    RADIO LINK PROTOCOL SYNC PROCEDURE
    14.
    发明专利
    RADIO LINK PROTOCOL SYNC PROCEDURE 未知

    公开(公告)号：CA2509370A1

    公开(公告)日：2004-06-24

    申请号：CA2509370

    申请日：2003-12-10

    Applicant: QUALCOMM INC

    Inventor： ABROL NISCHAL ,  SHEN LEI ,  VEEREPALLI SIVARAMAKRISHNA ,  HO SAI YIU DUNCAN ,  ACHOUR BAAZIZ

    IPC: H04L1/16 ,  H04L1/18 ,  H04L12/56 ,  C12N5/10 ,  C12N15/00 ,  C12N15/85

    Abstract: To mitigate re-syncs, RLP sync control frames associated with a packet data session can be sequence numbered. A single sequence number can be assigned f or an entire sync procedure associated with the initiation of a packet data session. For example, the sequence number can remains the same on all sync control frames (SYNC, SYNC/ACK, ACK) of a particular packet data session. Wh en a sync frame is received out of order within a single sequence, it can be ignored under certain conditions. For example, if a SYNC frame with a sequen ce number 0 is received out of order after an ACK frame with sequence number 0 is received, the mobile station can ignore the out of order SYNC frame. Thus, a n RLP re-sync is avoided due to out of order RLP sync packets.

    19.
    发明专利
    未知

    公开(公告)号：AT552713T

    公开(公告)日：2012-04-15

    申请号：AT02776054

    申请日：2002-09-27

    Applicant: QUALCOMM INC

    Inventor： ACHOUR BAAZIZ ,  KHARE ARJUN ,  MUDIGONDA RAVISHANKER ,  YOON STEVEN

    IPC: H04W28/18 ,  H04W28/26

    Abstract: A system and a corresponding method for controlling transmission of a non-zero supplemental channel request message, denoted SCRM, by a wireless communication device are described, wherein the system comprising means for selectively enabling transmission of a non-zero reverse supplemental channel SCRM, denoted R-SCH SCRM, wherein transmission of a non-zero R-SCH SCRM is selectively enabled based in part on a predetermined characteristic of a reverse supplemental channel, R-SCH, burst.

    20.
    发明专利
    未知

    公开(公告)号：AT466421T

    公开(公告)日：2010-05-15

    申请号：AT01950704

    申请日：2001-06-28

    Applicant: QUALCOMM INC

    Inventor： GLAZKO SERGUEI ,  ACHOUR BAAZIZ ,  LIN YU-CHUAN

    IPC: H04J3/17 ,  H04B7/26 ,  H04J3/14 ,  H04L1/20 ,  H04Q7/38 ,  H04W4/00

    Abstract: A system and method for detecting discontinuous transmission (DTX) frames. The inventive method includes the steps of receiving data transmitted in a plurality of frames; classifying each of the frames; analyzing the classification of a number of successive frames of the received data and providing a metric with respect thereto; and determining, in response to the metric, if a frame is a discontinuous frame. In the illustrative embodiment, the step of classifying includes the step of error checking the frames using a cyclic redundancy check (CRC) error checking protocol. The received frames are classified as good frames (G), erasure frames (E), or discontinuous frames (D). A numerical value is assigned to each of the frames based on the classification thereof. Next, the frames are filtered to provide an output Yn=Yn-1+Xn where 'n' is a frame number, Yn is the filter output for a given frame n, Yn-1 is the filter output for a previous frame, and Xn is a stream of input frames. A threshold is set for the output Yn to facilitate the detection of discontinuous frames. That is, a detection of a discontinuous transmission frame is indicated when a frame is classified as an 'erasure' and the filter output exceeds the threshold. On the detection of a discontinuous frame, the classification of the frame is changed from 'erasure' to 'discontinuous'. By reclassifying improperly classified erasure frames, the mobile receiver is inhibited from requesting retransmission of the frames or a change in the transmit power level. Consequently, network throughput and capacity are optimized and system power is conserved.

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