公开(公告)号：US10805959B2

公开(公告)日：2020-10-13

申请号：US16037693

申请日：2018-07-17

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Makesh Pravin John Wilson ,  Tao Luo ,  Sumeeth Nagaraja

IPC: H04W74/08 ,  H04W72/04 ,  H04W72/08 ,  H04W16/28 ,  H04W88/02

Abstract: Certain aspects of the present disclosure provide techniques for random-access channel (RACH) communication. For example, certain aspects provide a method for providing an indication, via a first uplink transmission, of a preferred beam for a subsequent (uplink or downlink) transmission.

公开(公告)号：US10791579B2

公开(公告)日：2020-09-29

申请号：US16240162

申请日：2019-01-04

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Tao Luo ,  Linhai He

IPC: H04W4/00 ,  H04W74/08 ,  H04B7/06 ,  H04B7/0408 ,  H04L1/18 ,  H04L27/26 ,  H04W36/30 ,  H04L5/00

Abstract: Wireless communications systems and methods related to performing a random access procedure are provided. A first wireless communication device receives a random access response monitoring configuration for a plurality of random access opportunities associated with a random access attempt. The first wireless communication device transmits, to a second wireless communication device, one or more random access preambles associated with the plurality of random access opportunities. The first wireless communication device monitors for a random access response for each of the one or more random access preambles based on the random access response monitoring configuration.

公开(公告)号：US10707923B2

公开(公告)日：2020-07-07

申请号：US16158272

申请日：2018-10-11

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Sony Akkarakaran ,  Sumeeth Nagaraja ,  Xiao Feng Wang ,  Juan Montojo ,  Shengbo Chen ,  Wooseok Nam ,  Yan Zhou

IPC: H04W72/04 ,  H04B7/024 ,  H04L5/00 ,  H04B7/08 ,  H04B7/022 ,  H04W4/70 ,  H04W76/27 ,  H04B7/06 ,  H04W4/20 ,  H04W80/02

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a base station may communicate with a user equipment (UE) using multiple antennas. Data streams may be mapped to the antennas using antenna ports. In some cases, a base station may transmit a transmission configuration indication (TCI) to a UE to indicate quasi co-location (QCL) relationships between antenna ports used for downlink communication with a UE. The UE may use these QCL relationships to identify appropriate techniques for decoding a downlink transmission from the base station. In some cases, it may be appropriate for a base station to update one or more TCI states configured for indicating, to a UE, QCL relationships between antenna ports used for downlink communication with the UE. As described herein, a base station may support techniques for dynamically updating such TCI states (e.g., via downlink control information (DCI) signaling).

公开(公告)号：US10674351B2

公开(公告)日：2020-06-02

申请号：US16007771

申请日：2018-06-13

Applicant: QUALCOMM Incorporated

Inventor： Jay Kumar Sundararajan ,  Alexandros Manolakos ,  Naga Bhushan ,  Joseph Binamira Soriaga ,  Sumeeth Nagaraja

IPC: H04W8/24 ,  H04B7/0404 ,  H04B7/08 ,  H04B7/06 ,  H04W72/12 ,  H04W88/02

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) capable of supporting multiple antenna ports may determine that some combinations of antenna ports can be used simultaneously. The UE may make this determination by evaluating the relationships between the physical antennas and the transmit chains included in the UE. Upon determining that the combinations of antenna ports can be used simultaneously, the UE may send a message to a base station. The message may indicate whether two or more antenna ports can be used at the same time. The UE may communicate simultaneously over one or more antenna ports based on the scheduling information from the base station which takes into account the ability of the combination of antenna ports to be used concurrently.

公开(公告)号：US10666347B2

公开(公告)日：2020-05-26

申请号：US15914733

申请日：2018-03-07

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Sumeeth Nagaraja ,  Tao Luo ,  Makesh Pravin John Wilson ,  Ajay Gupta ,  Arumugam Chendamarai Kannan

IPC: H04B7/08 ,  H04W24/10 ,  H04W52/02 ,  H04B7/06 ,  H04W76/25 ,  H04W76/28 ,  H04B7/26

Abstract: A user equipment (UE) may operate in a reception mode that includes a set of sleep cycles and a set of wake cycles. During a sleep cycle of the UE, a signal quality of an active beam carrying a control channel or a data channel may degrade. This may result in the UE failing to decode the control channel or the data channel during a subsequent wake cycle. In some aspects, the UE may perform a measurement of one or more beams, of a set of beams, prior to the wake cycle. In some aspects, the UE may identify a beam, of the one or more beams, to use for communication with a base station (BS). In this way, the UE reduces a delay in data transfer associated with performing beam recovery after failing to decode the control channel or data channel during the wake cycle.

公开(公告)号：US10651995B2

公开(公告)日：2020-05-12

申请号：US16133582

申请日：2018-09-17

Applicant: QUALCOMM Incorporated

Inventor： Wooseok Nam ,  Tao Luo ,  Sony Akkarakaran ,  Makesh Pravin John Wilson ,  Sumeeth Nagaraja ,  Xiao Feng Wang ,  Shengbo Chen

IPC: H04L5/00 ,  H04W4/06 ,  H04W72/04 ,  H04W4/02 ,  H04B7/06 ,  H04B7/0408

Abstract: Aspects of the present disclosure provide for the transmission of group common control information in 5G New Radio (NR) wireless communication systems. Group common control information may be transmitted to a group or subset of user equipment (UEs) within a cell utilizing a beam-sweeping configuration. A base station may utilize a plurality of transmit beams to transmit information within the cell, and a subset of the transmit beams may be identified for use in transmitting the group common control information to the group of UEs. In addition, the base station may identify spatial quasi-colocation (QCL) relationships between reference beams corresponding in direction to the selected subset of transmit beams and resources reserved for the group common control information and provide the spatial QCL relationships to the UEs in the group.

公开(公告)号：US10548182B2

公开(公告)日：2020-01-28

申请号：US16104656

申请日：2018-08-17

Applicant: QUALCOMM Incorporated

Inventor： Jianghong Luo ,  Muhammad Nazmul Islam ,  Sumeeth Nagaraja ,  Ashwin Sampath ,  Sundar Subramanian

IPC: G08C17/00 ,  H04W76/28 ,  H04W72/04 ,  H04W72/14 ,  H04W56/00 ,  H04W52/02

Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit, to a user equipment (UE) operating in a discontinuous reception mode, a wakeup signal indicating whether data is available to be transmitted to the UE, the wakeup signal transmitted using a first set of transmit beams, which may be selected from a periodic beam management procedure, in accordance with a beam sweeping configuration. The base station may receive, from the UE and based at least in part on the wakeup signal, a response signal. The base station may perform, based at least in part on the response signal, further beam update procedures to identify a second set of transmit beams for future transmissions of the wakeup signal and/or for transmission of physical downlink control channel (PDCCH) to the UE.

公开(公告)号：US20190261422A1

公开(公告)日：2019-08-22

申请号：US16250801

申请日：2019-01-17

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Sumeeth Nagaraja ,  Amir Aminzadeh Gohari ,  Awlok Josan

IPC: H04W74/08 ,  H04W56/00 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communications for determining a minimum time gap between an received downlink message and transmission of an uplink message in response to the received downlink message. In some cases, a user equipment (UE) may receive a downlink message to perform a random access procedure. The UE may determine a minimum time gap based on an uplink transmission preparation time. The UE may transmit a random access preamble based on the minimum time gap. In some examples, the UE may receive a timing advance (TA) command and may determine a minimum time gap between receipt of the TA command and transmission of a time-adjusted uplink message.

公开(公告)号：US20190124640A1

公开(公告)日：2019-04-25

申请号：US16221265

申请日：2018-12-14

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Tao Luo ,  Makesh Pravin John Wilson

IPC: H04W72/04 ,  H04B7/06 ,  H04B17/318

Abstract: Methods, systems, and devices for wireless communication are described. Uplink resources may be allocated for transmissions of beam recovery messages. For example, a user equipment (UE) communicating in a system that supports beamformed transmissions may receive a configuration for resources from a base station, where the resources may be used for beam recovery signaling. The UE may identify a beam failure on one or more active beams used to communicate with the base station, and the UE may transmit a beam recovery message to the base station. In such cases, the beam recovery message may be transmitted according to the configuration received from the base station such that the beam recovery message is transmitted using the beam recovery resources. In some cases, the configuration may be received at the UE via radio resource control (RRC) signaling or via a system information broadcast from the base station.

公开(公告)号：US10244453B2

公开(公告)日：2019-03-26

申请号：US15149008

申请日：2016-05-06

Applicant: QUALCOMM Incorporated

Inventor： Seyed Shwan Ashrafi ,  Sumeeth Nagaraja ,  Dan Vassilovski ,  Dan Zhang ,  James Determan ,  Gene Wesley Marsh ,  Jun Ma

IPC: H04W36/24 ,  H04B17/336 ,  H04B7/185 ,  H04B7/195 ,  H04W36/30 ,  H04W84/06

Abstract: Methods and apparatuses for managing inter-satellite handovers are provided to allow a user terminal to reduce the frequency of handovers while maintaining a sufficiently high system capacity in a non-geosynchronous satellite communication system. The method and apparatus for managing inter-satellite handovers may be implemented in a gateway, in infrastructure connected to a gateway, in a user terminal, or in a satellite.