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    Reference signals and link adaptation for massive MIMO
    41.
    发明专利
    Reference signals and link adaptation for massive MIMO 未知

    公开(公告)号：AU2017264574B2

    公开(公告)日：2022-01-27

    申请号：AU2017264574

    申请日：2017-05-03

    Applicant: QUALCOMM INC

    Inventor： SORIAGA JOSEPH BINAMIRA ,  VITTHALADEVUNI PAVAN KUMAR ,  KARAKUS CAN ,  JI TINGFANG

    IPC: H04B7/04 ,  H04B7/0452 ,  H04B7/06

    Abstract: Aspects of the present disclosure relate to wireless communications and, more particularly, to reference signals (RS) and link adaptation for massive multiple-input multiple-output (MIMO). In one aspect, a method is provided which may be performed by a wireless device such as a base station (BS). The method generally includes receiving sounding reference signals (SRS) and at least one of: feedback regarding interference or a whitening matrix from one or more user equipments (UEs), determining beamforming parameters for transmissions to a group of one or more UEs based, at least in part, on the SRS and at least one of: the feedback regarding interference or the whitening matrix, and transmitting channel state information reference signals (CSI-RS) to UEs in the group using the determined beamforming parameters.

    Reciprocal channel sounding reference signal multiplexing
    42.
    发明专利
    Reciprocal channel sounding reference signal multiplexing 未知

    公开(公告)号：AU2016233882B2

    公开(公告)日：2020-06-11

    申请号：AU2016233882

    申请日：2016-02-05

    Applicant: QUALCOMM INC

    Inventor： SORIAGA JOSEPH BINAMIRA ,  JIANG JING ,  MUKKAVILLI KRISHNA KIRAN ,  VITTHALADEVUNI PAVAN KUMAR ,  BHUSHAN NAGA ,  JI TINGFANG ,  SMEE JOHN EDWARD

    IPC: H04B7/04 ,  H04B7/06 ,  H04L5/00

    Abstract: Systems and techniques are disclosed to enhance the efficiency of available bandwidth between UEs and base stations. A UE transmits a sounding reference signal (SRS) to the base station. The base station characterizes the uplink channel based on the SRS received and, using reciprocity, applies the channel characterization for the downlink channel. In applying the channel information, the base station forms the beam to the UE based on the uplink channel information obtained from the SRS. The UE may include an array of antennas, each UE transmitting a different SRS that the base station receives and uses to characterize the downlink. Multiple UEs (or a single UE with multiple antennas) transmit SRS at the same time and frequency allocation (non-orthogonal), but with each sending its own unique SRS. Further, multiple UEs (or a single UE with multiple antennas) may send their SRS at unique time/frequency allocations (orthogonal).

    RECIPROCAL CHANNEL SOUNDING REFERENCE SIGNAL MULTIPLEXING
    43.
    发明专利
    RECIPROCAL CHANNEL SOUNDING REFERENCE SIGNAL MULTIPLEXING 未知

    公开(公告)号：AU2020202824A1

    公开(公告)日：2020-05-21

    申请号：AU2020202824

    申请日：2020-04-29

    Applicant: QUALCOMM INC

    Inventor： SORIAGA JOSEPH BINAMIRA ,  JIANG JING ,  MUKKAVILLI KRISHNA KIRAN ,  VITTHALADEVUNI PAVAN KUMAR ,  BHUSHAN NAGA ,  JI TINGFANG ,  SMEE JOHN EDWARD

    IPC: H04B7/04 ,  H04B7/06 ,  H04L5/00

    Abstract: Systems and techniques are disclosed to enhance the efficiency of available bandwidth between UEs and base stations. A UE transmits a sounding reference signal (SRS) to the base station. The base station characterizes the uplink channel based on the SRS received and, using reciprocity, applies the channel characterization for the downlink channel. In applying the channel information, the base station forms the beam to the UE based on the uplink channel information obtained from the SRS. The UE may include an array of antennas, each UE transmitting a different SRS that the base station receives and uses to characterize the downlink. Multiple UEs (or a single UE with multiple antennas) transmit SRS at the same time and frequency allocation (non-orthogonal), but with each sending its own unique SRS. Further, multiple UEs (or a single UE with multiple antennas) may send their SRS at unique time/frequency allocations (orthogonal).

    RECIPROCAL CHANNEL SOUNDING REFERENCE SIGNAL MULTIPLEXING
    44.
    发明专利
    RECIPROCAL CHANNEL SOUNDING REFERENCE SIGNAL MULTIPLEXING 未知

    公开(公告)号：AU2020202822A1

    公开(公告)日：2020-05-21

    申请号：AU2020202822

    申请日：2020-04-29

    Applicant: QUALCOMM INC

    Inventor： SORIAGA JOSEPH BINAMIRA ,  JIANG JING ,  MUKKAVILLI KRISHNA KIRAN ,  VITTHALADEVUNI PAVAN KUMAR ,  BHUSHAN NAGA ,  SMEE JOHN EDWARD ,  JI TINGFANG

    IPC: H04B7/04 ,  H04B7/06 ,  H04L5/00

    Abstract: Systems and techniques are disclosed to enhance the efficiency of available bandwidth between UEs and base stations. A UE transmits a sounding reference signal (SRS) to the base station. The base station characterizes the uplink channel based on the SRS received and, using reciprocity, applies the channel characterization for the downlink channel. In applying the channel information, the base station forms the beam to the UE based on the uplink channel information obtained from the SRS. The UE may include an array of antennas, each UE transmitting a different SRS that the base station receives and uses to characterize the downlink. Multiple UEs (or a single UE with multiple antennas) transmit SRS at the same time and frequency allocation (non-orthogonal), but with each sending its own unique SRS. Further, multiple UEs (or a single UE with multiple antennas) may send their SRS at unique time/frequency allocations (orthogonal).

    REFERENCE SIGNALS AND LINK ADAPTATION FOR MASSIVE MIMO
    45.
    发明专利
    REFERENCE SIGNALS AND LINK ADAPTATION FOR MASSIVE MIMO 未知

    公开(公告)号：CA3020227A1

    公开(公告)日：2017-11-16

    申请号：CA3020227

    申请日：2017-05-03

    Applicant: QUALCOMM INC

    Inventor： SORIAGA JOSEPH BINAMIRA ,  VITTHALADEVUNI PAVAN KUMAR ,  KARAKUS CAN ,  JI TINGFANG

    IPC: H04B7/04 ,  H04B7/0452 ,  H04B7/06

    Abstract: Aspects of the present disclosure relate to wireless communications and, more particularly, to reference signals (RS) and link adaptation for massive multiple-input multiple-output (MIMO). In one aspect, a method is provided which may be performed by a wireless device such as a base station (BS). The method generally includes receiving sounding reference signals (SRS) and at least one of: feedback regarding interference or a whitening matrix from one or more user equipments (UEs), determining beamforming parameters for transmissions to a group of one or more UEs based, at least in part, on the SRS and at least one of: the feedback regarding interference or the whitening matrix, and transmitting channel state information reference signals (CSI-RS) to UEs in the group using the determined beamforming parameters.

    METHOD AND APPARATUS FOR SUPPORTING DATA TRANSMISSION IN A MULTI-CARRIER COMMUNICATION SYSTEM
    48.
    发明专利
    METHOD AND APPARATUS FOR SUPPORTING DATA TRANSMISSION IN A MULTI-CARRIER COMMUNICATION SYSTEM 未知

    公开(公告)号：CA2714446C

    公开(公告)日：2014-11-25

    申请号：CA2714446

    申请日：2009-02-27

    Applicant: QUALCOMM INC

    Inventor： ZHANG DANLU ,  YAVUZ MEHMET ,  MOHANTY BIBHU P ,  VITTHALADEVUNI PAVAN KUMAR

    IPC: H04L5/00

    Abstract: Techniques for supporting data transmission on multiple carriers in a wireless communication system are described, A user equipment (UE) may determine available transmit power for data transmission on multiple carriers. The UE may distribute the available transmit power Lo multiple carriers (e.g., using uniform power distribution, greedy filling, water filling, etc.) to obtain allocated transmit power for data for each carrier. The UE may send at least one resource request with information indicative of the allocated transmit power for each of the multiple carriers to a Node B. The UE may receive at least one resource grant with information indicative of granted transmit power for each of at least one carrier, which may be all or a subset of the multiple carriers. The UE may send data on the at least one carrier and may limit its transmit power for each carrier to the granted transmit power for that carrier.

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