142.
    发明专利
    未知

    公开(公告)号:BRPI0717954A2

    公开(公告)日:2013-11-05

    申请号:BRPI0717954

    申请日:2007-11-06

    Applicant: QUALCOMM INC

    Abstract: Techniques for supporting MIMO transmission with layer permutation are described. In one aspect, a base channel quality indicator (CQI) and a delta CQI for a multiple-input multiple-output (MIMO) transmission comprising multiple codewords are determined; and the base CQI and the delta CQI are sent as feedback information for the MIMO transmission.

    CYCLIC DELAY DIVERSITY AND PRECODING FOR WIRELESS COMMUNICATION

    公开(公告)号:CA2675254C

    公开(公告)日:2013-07-09

    申请号:CA2675254

    申请日:2008-02-06

    Applicant: QUALCOMM INC

    Abstract: Techniques for sending a MIMO transmission using a combination of cyclic delay diversity and precoding are described. A set of delays (e.g., zero delay, small delay, and large delay) for cyclic delay diversity and a set of precoding matrices may be supported. In one design, a Node B may select a delay specifically for a UE or for a set of UEs served by the Node B. In another design, a UE may evaluate different combinations of precoding matrix and delay, determine the combination with the best performance, and send this combination of precoding matrix and delay to the Node B. The Node B may perform precoding with the precoding matrix and then processing for cyclic delay diversity based on the selected delay. Alternatively, the Node B may perform processing for cyclic delay diversity based on the selected delay and then precoding with the precoding matrix.

    ACQUISITION IN FREQUENCY DIVISION MULTIPLE ACCESS SYSTEMS

    公开(公告)号:CA2659466C

    公开(公告)日:2013-04-16

    申请号:CA2659466

    申请日:2007-08-23

    Applicant: QUALCOMM INC

    Abstract: Systems and methods allow cell acquisition in a wireless communication system in frequency division multiple access mode of operation. Code sequences transmitted over primary synchronization channel (P-SCH) enable detection of symbol boundary, cyclic prefix duration, and indication of broadcast channel bandwidth. Sequences transmitted over secondary synchronization channel (S-SCH) afford radio frame boundary detection, cell identification, and broadcast channel bandwidth indication. Cell identification can be conveyed jointly between P-SCH and S-SCH codes. Broadcast channel sequences convey cyclic prefix timing, system bandwidth, and other system information. Relay of cell acquisition information, as well as multiple-cell acquisition when wireless system operates with frequency reuse are described.

    CODING AND MULTIPLEXING OF CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:SG183706A1

    公开(公告)日:2012-09-27

    申请号:SG2012058822

    申请日:2008-08-13

    Applicant: QUALCOMM INC

    Abstract: CODING AND MULTIPLEXING OF CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEMTechniques for sending control information in a wireless communication system are described. In an aspect, a UE spreads control information across frequency with a DFT and across time with an orthogonal sequence to obtain output data for the control information. In one design, the UE receives codewords for N HARQ processes in N downlink subframes, determines an ACK value for each HARQ process, codes N ACK values for the N HARQ processes to obtain ACK information, generates output data for the ACK information, and sends the output data in one of M uplink subframes. In another aspect, first control information is processed based on a first coding and multiplexing scheme utilizing code division multiplexing in time and frequency domains. Second control information is processed based on a second coding and multiplexing scheme utilizing code division multiplexing in time domain and spreading in frequency domain.Figure 7

    CODING AND MULTIPLEXING OF CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:SG183705A1

    公开(公告)日:2012-09-27

    申请号:SG2012058814

    申请日:2008-08-13

    Applicant: QUALCOMM INC

    Abstract: CODING AND MULTIPLEXING OF CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEMTechniques for sending control information in a wireless communication system are described. In an aspect, a UE spreads control information across frequency with a DFT and across time with an orthogonal sequence to obtain output data for the control information. In one design, the UE receives codewords for N HARQ processes in N downlink subframes, determines an ACK value for each HARQ process, codes N ACK values for the N HARQ processes to obtain ACK information, generates output data for the ACK information, and sends the output data in one of M uplink subframes. In another aspect, first control information is processed based on a first coding and multiplexing scheme utilizing code division multiplexing in time and frequency domains. Second control information is processed based on a second coding and multiplexing scheme utilizing code division multiplexing in time domain and spreading in frequency domain.Figure 7

    MIMO ПЕРЕДАЧА С ЯВНОЙ И НЕЯВНОЙ ЦИКЛИЧЕСКОЙ ЗАДЕРЖКОЙ

    公开(公告)号:UA98636C2

    公开(公告)日:2012-06-11

    申请号:UAA200909128

    申请日:2008-02-06

    Applicant: QUALCOMM INC

    Abstract: Описаныспособыдляпередачиданных, которыеиспользуюткомбинациюявнойциклическойзадержкии неявнойциклическойзадержки. Передатчикможетвыполнятьпервуюобработкудляразносас циклическойзадержкой (илиобработкуявнойциклическойзадержки) наосновепервогонаборазначенийциклическойзадержки, известныхприемнику. Передатчикможетвыполнятьпредварительноекодированиенаосновематрицыпредварительногокодированиянакакперед, таки послеобработкиявнойциклическойзадержки. Передатчикможетвыполнятьвторуюобработкудляразнесенияс циклическойзадержкой (илиобработкунеявнойциклическойзадержки) наосновевторогонаборазначенийциклическойзадержки, неизвестныхприемнику. Передатчикможетвыполнятьобработкукакявнойциклическойзадержки, таки неявнойциклическойзадержки, дляданных, иможетвыполнятьтолькообработкунеявнойциклическойзадержкидляпилотногосигнала. Одинобъектможетвыбиратьпервыйнаборзначенийциклическойзадержкии информироватьдругойобъект. Передатчикможетсамостоятельновыбиратьвторойнаборзначенийциклическойзадержкибезинформированияприемника.

    POWER CONTROL AND RESOURCE MANAGEMENT IN ORTHOGONAL WIRELESS SYSTEMS

    公开(公告)号:CA2644418C

    公开(公告)日:2012-03-20

    申请号:CA2644418

    申请日:2007-03-27

    Applicant: QUALCOMM INC

    Abstract: A method for controlling power in a wireless network is provided. The method includes determining a relative power parameter at a wireless device such as a mobile wireless terminal and receiving a load parameter at the wireless device, where the load parameter is associated with at least one other wireless cell. The method includes adjusting transmit power of the wireless device in view of the relative power parameter and the load parameter. In another embodiment, the transmit power can be controlled in view of an absolute power spectral density parameter.

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