公开(公告)号：AU2017254388A1

公开(公告)日：2018-09-27

申请号：AU2017254388

申请日：2017-03-27

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  LUO TAO ,  SADIQ BILAL ,  CEZANNE JUERGEN ,  SUBRAMANIAN SUNDAR ,  LI JUNYI

IPC: H04B7/0417 ,  H04B7/06

Abstract: When beamforming (e.g., via a millimeter wave system (mmW)) is used for wireless communication, a base station may transmit beams that are directed to certain directions. Due to the directional nature of the beams in the mmW system, an approach to determine a beam that provides a desirable gain is studied. The apparatus may be a user equipment (UE). The apparatus receives, from a base station, a plurality of signals through a plurality of beams of the base station, each of the plurality of beams corresponding to a respective antenna port of a plurality of antenna ports of the base station, where the plurality of signals include a plurality of beam reference signals, a plurality of beam refinement reference signals, a plurality of channel state information reference signals (CSI-RSs), or a combination thereof. The apparatus performs channel estimation for each beam of the plurality of beams from the plurality of antenna ports based on the plurality of signals.

公开(公告)号：AU2017252176A1

公开(公告)日：2018-09-27

申请号：AU2017252176

申请日：2017-03-27

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  LUO TAO ,  SADIQ BILAL ,  CEZANNE JUERGEN ,  SUBRAMANIAN SUNDAR ,  LI JUNYI

IPC: H04B7/0417 ,  H04B7/06 ,  H04B7/08

Abstract: When beamforming (e.g., via a millimeter wave system (mmW)) is used for wireless communication, a base station may transmit beams that are directed to certain directions. Due to the directional nature of the beams in the mmW system, an approach to determine a beam that provides a desirable gain is studied. The apparatus may be a user equipment (UE). The apparatus receives, from a base station, a plurality of signals through a plurality of beams of the base station, each of the plurality of beams corresponding to a respective antenna port of a plurality of antenna ports of the base station. The apparatus performs channel estimation for each beam of the plurality of beams from the plurality of antenna ports based on the plurality of signals. The apparatus transmits, to the base station, a feedback signal including information about one or more beams selected from the plurality of beams, the feedback signal further including one or more candidate uplink precoders.

公开(公告)号：AU2017249059A1

公开(公告)日：2018-09-27

申请号：AU2017249059

申请日：2017-03-31

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  LUO TAO ,  CEZANNE JUERGEN ,  SUBRAMANIAN SUNDAR ,  SAMPATH ASHWIN ,  SADIQ BILAL ,  LI JUNYI

IPC: H04B7/0417 ,  H04B7/06

Abstract: A first apparatus may communicate with a user equipment (UE) through an active beam. The first apparatus may transmit, to the UE, information indicating a periodicity at which control information is to be communicated on a control channel through a control-information beam. The first apparatus may communicate, with the UE, the control information on the control channel through the control-information beam at the periodicity. Further, the first apparatus may receive a request to change the active beam, which may indicate a beam index corresponding to a second beam, and the first apparatus may change the active beam to the second beam corresponding to the beam index indicated by the request.

公开(公告)号：AU2017247135A1

公开(公告)日：2018-09-20

申请号：AU2017247135

申请日：2017-03-06

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMED NAZMUL ,  SUBRAMANIAN SUNDAR ,  LUO TAO ,  CEZANNE JUERGEN ,  SADIQ BILAL ,  LI JUNYI

IPC: H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a sounding reference signal (SRS) configuration for user equipment (UE). The base station may transmit an SRS grant message to a UE indicating the SRS configuration. An indication of SRS parameters may be included in the SRS grant message, and may include the SRS parameters or a location of the SRS parameters. That is, SRS parameters may be transmitted in a control channel with the SRS grant message or may be separately sent in a data channel as indicated by the indication of SRS parameters. In some cases, SRS parameters may be determined based on previously received UE feedback regarding channel conditions or power limitations. Alternatively, the base station may make its own environment measurements or assign SRS parameters autonomously. The UE may signal SRS transmissions to the base station according to the SRS grant message.

公开(公告)号：AU2017247134A1

公开(公告)日：2018-09-20

申请号：AU2017247134

申请日：2017-03-06

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  SUBRAMANIAN SUNDAR ,  LUO TAO ,  CEZANNE JUERGEN ,  SADIQ BILAL ,  LI JUNYI

IPC: H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a sounding reference signal (SRS) configuration for user equipment (UE). The base station may transmit an SRS grant message to a UE indicating the SRS configuration. An indication of SRS parameters may be included in the SRS grant message, and may include the SRS parameters or a location of the SRS parameters. That is, SRS parameters may be transmitted in a control channel with the SRS grant message or may be separately sent in a data channel as indicated by the indication of SRS parameters. In some cases, SRS parameters may be determined based on previously received UE feedback regarding channel conditions or power limitations. Alternatively, the base station may make its own environment measurements or assign SRS parameters autonomously. The UE may signal SRS transmissions to the base station according to the SRS grant message.

公开(公告)号：AU2017246713A1

公开(公告)日：2018-09-13

申请号：AU2017246713

申请日：2017-03-27

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  LI JUNYI ,  SUBRAMANIAN SUNDAR ,  CEZANNE JUERGEN ,  LUO TAO ,  SAMPATH ASHWIN

IPC: H04W72/12

Abstract: A wireless device configured for discontinuous reception (DRX) may and operating in a system that uses directional beamforming may identify a random access time period after awaking from a DRX sleep mode. The device may then transmit a scheduling request during the random access time period. In some cases, the device may transmit the scheduling request using frequency resources also associated with random access transmissions. In other cases, the device may utilize resources that are not associated with random access. The determination of which frequency resources are used may depend on the length of the DRX. That is, if a device has been in a sleep mode for a long time, it may use random access frequency resources that are associated with a more robust transmission configuration.

公开(公告)号：AU2017246210A1

公开(公告)日：2018-09-13

申请号：AU2017246210

申请日：2017-04-01

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  LUO TAO ,  SUBRAMANIAN SUNDAR ,  CEZANNE JUERGEN ,  SADIQ BILAL ,  ABEDINI NAVID ,  LI JUNYI

IPC: H04L5/00

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for phase noise estimation in data symbols for millimeter wave (mmW). A method for wireless communications by a transmitting device is provided. The method generally includes identifying a phase noise metric associated with at least one receiving device; determining a phase noise pilot configuration based, at least in part, on the identified phase noise metric; and providing an indication of the phase noise pilot configuration to the at least one receiving device. A receiving device can receive the phase noise pilots in accordance with the configuration and determine phase noise for a data symbol based on the received phase noise pilots.

公开(公告)号：HUE036680T2

公开(公告)日：2018-07-30

申请号：HUE10010369

申请日：2003-08-07

Applicant: QUALCOMM INC

Inventor： LAROIA RAJIV ,  LI JUNYI ,  UPPALA SATHYADEV VENKATA

IPC: H04W52/02 ,  H04W76/04 ,  H04B7/005 ,  H04L12/56 ,  H04M1/73 ,  H04W24/00 ,  H04W52/08 ,  H04W52/28 ,  H04W52/60 ,  H04W56/00 ,  H04W68/02 ,  H04W72/00 ,  H04W88/02

公开(公告)号：CA3042227A1

公开(公告)日：2018-06-21

申请号：CA3042227

申请日：2017-10-23

Applicant: QUALCOMM INC

Inventor： LI CHONG ,  LI JUNYI ,  XU HAO ,  JIANG JING

IPC: H04L1/16 ,  H04L1/00 ,  H04L1/18

Abstract: A first apparatus may puncture, in at least two subslots, a first type of data or control information with a second type of data or control information. The first apparatus may bundle the least two subslots within a subframe, and the subframe may include a portion for carrying acknowledgment (ACK) / negative acknowledgment (NACK) information associated with the second type of data or control information. The first apparatus may communicate with a user equipment (UE) during the at least two subslots within the subframe. A second apparatus may receive ACK/NACK information associated with a second type of data or control information. The second apparatus may reduce a transmission power for a first type of data or control information during a subsequent subframe when the ACK/NACK information indicates a negative acknowledgement.

公开(公告)号：AU2016358930A1

公开(公告)日：2018-05-10

申请号：AU2016358930

申请日：2016-10-31

Applicant: QUALCOMM INC

Inventor： ISLAM MUHAMMAD NAZMUL ,  SUBRAMANIAN SUNDAR ,  CEZANNE JUERGEN ,  MUKKAVILLI KRISHNA KIRAN ,  SAMPATH ASHWIN ,  LI JUNYI

IPC: H04B7/06 ,  H04W16/28

Abstract: Methods, systems, and apparatuses are described for wireless communication at a base station. The base station may transmit a control message to a set of user equipments (UEs) using a directional transmission having a first beamform width. The base station may exchange, according to the control message, data messages with a first UE of the set of UEs using a directional transmission having a second beamform width. The second beamform width may be different from the first beamform width. The base station may exchange, according to the control message, data messages with a second UE of the set of UEs using a directional transmission having a third beamform width. The third beamform width may be different from the first beamform width, the second beamform width, or both.