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    MULTI-ANTENNA TRANSMISSION FOR SPATIAL DIVISION MULTIPLE ACCESS
    52.
    发明专利
    MULTI-ANTENNA TRANSMISSION FOR SPATIAL DIVISION MULTIPLE ACCESS 未知

    公开(公告)号：SG150535A1

    公开(公告)日：2009-03-30

    申请号：SG2009012105

    申请日：2004-11-12

    Applicant: QUALCOMM INC

    Inventor： WALTON J RODNEY ,  KETCHUM JOHN W ,  SMEE JOHN EDWARD ,  WALLACE MARK S ,  HOWARD STEVEN J

    IPC: H04B7/06 ,  H04J11/00 ,  H04J99/00 ,  H04L5/02 ,  H04Q7/36

    Abstract: MULTI-ANTENNA TRANSMISSION FOR SPATIAL DIVISION MULTIPLE ACCESS An uplink channel response matrix is obtained for each terminal and decomposed to obtain a steering vector used by the terminal to transmit on the uplink. An 'effective' uplink channel response vector is formed for each terminal based on its steering vector and its channel response matrix. Multiple sets of terminals are evaluated based on their effective channel response vectors to determine the best set (e.g., with highest overall throughput) for uplink transmission. Each selected terminal performs spatial processing on its data symbol stream with its steering vector and transmits its spatially processed data symbol stream to an access point. The multiple selected terminals simultaneously transmit their data symbol streams via their respective MIMO channels to the access point. The access point performs receiver spatial processing on its received symbol streams in accordance with a receiver spatial processing technique to recover the data symbol streams transmitted by the selected terminals.

    Quality of service scheduler for a wireless network
    54.
    发明专利
    Quality of service scheduler for a wireless network 未知

    公开(公告)号：AU2004310994B2

    公开(公告)日：2008-12-11

    申请号：AU2004310994

    申请日：2004-11-24

    Applicant: QUALCOMM INC

    Inventor： NANDA SANJIV ,  WALTON J RODNEY

    IPC: H04L12/28 ,  H04L12/56 ,  H04L47/20 ,  H04L47/2475 ,  H04L47/30 ,  H04L47/56 ,  H04L47/6275 ,  H04L47/765 ,  H04L47/80 ,  H04W8/18 ,  H04W28/18 ,  H04W28/26 ,  H04W72/04 ,  H04W72/12

    Abstract: In one aspect of the invention, a communication device, operable with a plurality of remote devices, and operable with an admission profile comprising a capacity reservation for zero or more remote devices, comprises a scheduler for determining if a remote device corresponding to the data transmission indicator has a capacity reservation in the admission profile and for allocating capacity in accordance with the data transmission indicator. In another aspect, data indicators correspond to one or more service levels. Remaining capacity may be allocated in priority of increasing size of data transmission requirement. In yet another aspect, an admission profile is updated to accept a new flow, characterized by flow parameters, in accordance with available system capacity. Various other aspects are also presented.

    HIGH SPEED MEDIA ACCESS CONTROL AND DIRECT LINK PROTOCOL
    60.
    发明专利
    HIGH SPEED MEDIA ACCESS CONTROL AND DIRECT LINK PROTOCOL 未知

    公开(公告)号：CA2753322A1

    公开(公告)日：2005-04-28

    申请号：CA2753322

    申请日：2004-10-15

    Applicant: QUALCOMM INC

    Inventor： WALTON J RODNEY ,  NANDA SANJIV

    IPC: H04W74/02 ,  H04B1/76 ,  H04B7/005 ,  H04L12/28 ,  H04L12/56 ,  H04L12/66 ,  H04L29/06 ,  H04L29/08 ,  H04W24/00 ,  H04W52/38 ,  H04W72/04 ,  H04W72/12

    Abstract: Techniques for MAC processing for efficient use of high throughput systems that may be backward compatible with various types of legacy systems are disclosed. In one aspect, a data frame is formed comprising a common portion for transmission in a format receivable by various stations, such as access points and remote stations. The data frame also comprises a dedicated portion, formatted for transmission to a specified remote station. In another aspect, the common portion is unsteered, and the dedicated portion is steered. In another aspect, an access point schedules an allocation in response to a data indication included in a common portion of a data frame transmitted from one remote station to another. In another aspect, a first station transmits a reference to a second station, which measures the reference and generates feedback therefrom.

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