公开(公告)号：US10447444B2

公开(公告)日：2019-10-15

申请号：US15357791

申请日：2016-11-21

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Sundar Subramanian ,  Tao Luo ,  Juergen Cezanne ,  Bilal Sadiq ,  Junyi Li

IPC: H04L5/00 ,  H04W52/36 ,  H04W72/04 ,  H04W88/02 ,  H04W88/08

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：US10439663B2

公开(公告)日：2019-10-08

申请号：US15476511

申请日：2017-03-31

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Sundar Subramanian ,  Juergen Cezanne ,  Bilal Sadiq ,  Navid Abedini ,  Junyi Li

IPC: H04L5/00 ,  H04B1/10 ,  H04B17/336 ,  H04B7/06 ,  H04J13/00 ,  H04L1/00 ,  H04W72/04

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：US10425138B2

公开(公告)日：2019-09-24

申请号：US15488404

申请日：2017-04-14

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Bilal Sadiq ,  Tao Luo ,  Sundar Subramanian ,  Junyi Li

IPC: H04M1/00 ,  H04B7/06 ,  H04B7/0408 ,  H04B7/0417 ,  H04B7/0426 ,  H04B7/0456 ,  H04W16/28

Abstract: A UE may receive, from a base station, through a set of beams a set of BRSs. The UE may measure a signal quality of each BRS of the set of BRSs, and each measured signal quality may correspond to a beam of the set of beams. In an aspect, the UE may maintain a set of candidate beam indexes corresponding to a set of best measured signal qualities of the set of BRSs. In an aspect, the UE may transmit, to the base station, information indicating at least one measured signal quality and at least one beam index from the set of maintained candidate beam indexes, and the at least one beam index may correspond to the at least one measured signal quality.

公开(公告)号：US10411777B2

公开(公告)日：2019-09-10

申请号：US15426878

申请日：2017-02-07

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Sundar Subramanian ,  Bilal Sadiq ,  Navid Abedini ,  Junyi Li

IPC: H04W16/28 ,  H04B7/06 ,  H04W72/04 ,  H04L5/00

Abstract: There is a need for a beam tracking technique that reduces the time needed to perform a beamforming procedure and that reduces beam overhead. The apparatus may determine a mapping between a first beam associated with a first type of channel and a second beam associated with a second type of channel. In an aspect, the first type of channel may be different than the second type of channel. The apparatus may receive the first beam associated with the first type of channel and the second beam associated with the second type of channel. In an aspect, the first beam and the second beam may be received from a second device.

公开(公告)号：US10396959B2

公开(公告)日：2019-08-27

申请号：US15713074

申请日：2017-09-22

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Ashwin Sampath ,  Sumeeth Nagaraja ,  Sundar Subramanian ,  Juergen Cezanne ,  Sony Akkarakaran

IPC: H04L5/00 ,  H04B7/0408 ,  H04B7/06 ,  H04L1/00 ,  H04W16/28 ,  H04W72/04

Abstract: Certain aspects of the present disclosure provide techniques for signaling information regarding beams used for data and control transmissions to a receiving entity.

公开(公告)号：US20190261289A1

公开(公告)日：2019-08-22

申请号：US16256603

申请日：2019-01-24

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Sundar Subramanian ,  Ashwin Sampath ,  Junyi Li

IPC: H04W52/36 ,  H04W52/14 ,  H04W52/22 ,  H04W72/04

Abstract: Wireless communications systems and methods related to mitigating maximum permissible exposure (MPE) constraints based on user equipment (UE) feedback are provided. A first wireless communication device transmits, to a second wireless communication device, a plurality of reports, each report indicating an allowable transmission power level at the first wireless communication device satisfying an MPE parameter. The first wireless communication device receives, from the second wireless communication device, a first configuration based on an MPE profile associated with the first wireless communication device in response to the plurality of reports. The first wireless communication device transmits, to the second wireless communication device, a first communication signal over a first beam based on the first configuration.

公开(公告)号：US10375707B2

公开(公告)日：2019-08-06

申请号：US15412367

申请日：2017-01-23

Applicant: QUALCOMM Incorporated

Inventor： Karl Georg Hampel ,  Junyi Li ,  Sundar Subramanian ,  Muhammad Nazmul Islam ,  Navid Abedini

IPC: H04B7/00 ,  H04W72/12 ,  H04W72/04 ,  H04W92/20

Abstract: Methods, systems, and devices for wireless communication are described. In particular, a backhaul network that may be established between access nodes and/or base stations is shown and described. To support communications via the backhaul network, a synchronized frame structure and unique network topologies may be established. Resources may be allocated to different wireless communication links based on the synchronized frame structure. Occupancy/availability indications are shown and described, which enable the local redistribution of resources to account for variations in signal quality and/or variations in traffic experienced by the backhaul network.

公开(公告)号：US20190182091A1

公开(公告)日：2019-06-13

申请号：US16215196

申请日：2018-12-10

Applicant: QUALCOMM Incorporated

Inventor： Tianyang Bai ,  Juergen Cezanne ,  Sundar Subramanian ,  Junyi Li

IPC: H04L27/26 ,  G06F17/14 ,  H04B1/40 ,  H04B1/04 ,  H04B1/16

Abstract: Methods, systems, and devices for wireless communications are described for phase error estimation and correction with sub-symbol resolution. A transmitting device may precode symbols (e.g., phase tracking reference signal (PT-RS) symbols) using a discrete Fourier transform (DFT). The transmitting device may map the DFT-precoded symbols to sets of adjacent subcarriers of a wireless signal, and may map other symbols to other subcarriers of the wireless signal. A receiving device may receive the wireless signal and may compare time domain representations of the DFT-precoded symbols with time domain representations of known reference symbols. The receiving device may estimate a phase error with sub-symbol resolution in the time domain based at least in part on the comparison, and may apply a phase correction in either the time or frequency domain to the other symbols.

公开(公告)号：US20190141640A1

公开(公告)日：2019-05-09

申请号：US16178527

申请日：2018-11-01

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Xiao Feng Wang ,  Bilal Sadiq ,  Sundar Subramanian ,  Muhammad Nazmul Islam

IPC: H04W52/14 ,  H04W52/42

Abstract: Techniques are provided for power control in directional beam environments. A user equipment (UE) may determine one or more power parameters on a beam-by-beam basis. Each directional uplink transmission beam in a communication link between the UE and the base station may be independently controlled using these beam-specific power parameters. Examples of these beam-specific power parameters may include a maximum output power for a given directional uplink transmission beam and a difference between the maximum output power for the given directional uplink transmission beam and an estimated transmit power for the given directional uplink transmission beam. The UE may report one or more of these beam-specific power parameters to a base station using a beam-specific report.

公开(公告)号：US20190140811A1

公开(公告)日：2019-05-09

申请号：US16184864

申请日：2018-11-08

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Sundar Subramanian ,  Junyi Li ,  Durga Prasad Malladi ,  Karl Georg Hampel ,  Muhammad Nazmul Islam

IPC: H04L5/14 ,  H04B7/0404 ,  H04B7/06 ,  H04B7/0408 ,  H04L5/16

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may utilize different beam configurations for different signal types, traffic demand, path loss, capabilities of the wireless device or other wireless devices in the system, and the like. The wireless device also may be capable of determining different duplexing modes, which may be utilized in addition to the different beam configurations. The duplexing mode may be based on received measurement reports (e.g., from one or more reference signals) or in some instances, the duplexing mode may be determined by another node (e.g., a core network node, a base station) and transmitted to the wireless device.