公开(公告)号：US20220110156A1

公开(公告)日：2022-04-07

申请号：US17449873

申请日：2021-10-04

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Vinay Chande ,  Arumugam Chendamarai Kannan ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic

IPC: H04W74/08 ,  H04W24/08

Abstract: A method of wireless communication includes receiving, by a user equipment (UE) from a base station, a listen-before-talk (LBT) configuration message indicating whether category 2 (Cat2) LBT operations are enabled or disabled for the UE. The method further includes receiving, by the UE from the base station, a channel occupancy time (COT) message configuring the UE with a COT. The method further includes performing, by the UE, an LBT operation based on the LBT configuration message and based on the COT message.

公开(公告)号：US11296837B2

公开(公告)日：2022-04-05

申请号：US15417137

申请日：2017-01-26

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Tao Luo ,  Chirag Sureshbhai Patel ,  Tamer Adel Kadous

IPC: H04L5/00 ,  H04W84/04 ,  H04L1/00 ,  H04W28/04 ,  H04H20/18 ,  H04W48/16 ,  H04W48/10

Abstract: Techniques for broadcast channel management on a shared communication medium are disclosed. An access terminal may be configured to identify a subframe number associated with a given subframe based not only on a subframe number indicator but also a reference boundary. Conversely, an access point may be configured to set a subframe number indicator for a given subframe based not only on its subframe number but also a reference boundary.

公开(公告)号：US11240836B2

公开(公告)日：2022-02-01

申请号：US16987224

申请日：2020-08-06

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Tao Luo ,  Xiaoxia Zhang ,  Arumugam Chendamarai Kannan ,  Sungwoo Park

IPC: H04L1/02 ,  H04W72/12 ,  H04L5/00 ,  H04L5/02

Abstract: Certain aspects of the present disclosure provide techniques for making multi-transmission configuration indicator (TCI) state data scheduling more reliable. A method that may be performed by a user equipment (UE) includes receiving, from a base station (BS), a first signal indicative of a plurality of demodulation reference signal (DMRS) ports. The method may also include receiving, from the BS, a second signal indicative of a first spatial state of a physical channel and a second spatial state of the physical channel. The method may also include communicating data over the second subset and not the first subset, based on which of the plurality of DMRS ports are part of the first subset and which of the plurality of DMRS ports are part of the second subset.

公开(公告)号：US11229033B2

公开(公告)日：2022-01-18

申请号：US16855866

申请日：2020-04-22

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo Park ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Srinivas Yerramalli ,  Tao Luo ,  Xiaoxia Zhang ,  Jing Sun ,  Kaushik Chakraborty ,  Sony Akkarakaran ,  Olufunmilola Omolade Awoniyi-Oteri ,  Zhifei Fan ,  Mostafa Khoshnevisan ,  Wooseok Nam

IPC: H04W72/08 ,  H04W24/08 ,  H04W72/04 ,  H04W76/27 ,  H04W56/00 ,  H04W80/02 ,  H04W16/28

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) in communication with a serving base station may identify that the UE is a potential victim of interference from a neighboring base station. The UE may transmit an interference coordination message to the neighboring base station. The interference coordination message may request modification of one or more transmission parameters at the neighboring base station. The neighboring base station may modify its transmission parameters to decrease interference with the UE, and the UE may communicate with the serving base station after transmitting the interference coordination message.

公开(公告)号：US11219070B2

公开(公告)日：2022-01-04

申请号：US16795281

申请日：2020-02-19

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo Park ,  Makesh Pravin John Wilson ,  Vinay Chande ,  Tao Luo ,  Jing Sun ,  Xiaoxia Zhang ,  Arumugam Chendamarai Kannan ,  Wooseok Nam

IPC: H04W74/08 ,  H04W56/00 ,  H04W76/27 ,  H04W72/04 ,  H04L1/16

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may select a random access channel (RACH) signature from among one or more RACH signatures associated with a synchronization signal block (SSB). The UE may transmit, to a base station (BS), a RACH communication using the selected RACH signature. Numerous other aspects are provided.

公开(公告)号：US20210400499A1

公开(公告)日：2021-12-23

申请号：US17466525

申请日：2021-09-03

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Aleksandar Damnjanovic

IPC: H04W16/14 ,  H04L5/00 ,  H04W72/04 ,  H04W72/14 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit to a user equipment (UE) a control signal comprising a grant for a downlink transmission. The base station may perform, during a gap between the control signal and the downlink transmission, a clear channel assessment (CCA) procedure on a shared radio frequency spectrum band associated with the downlink transmission. The base station may perform, based at least in part on a success of the CCA procedure, the downlink transmission to the UE over the shared radio frequency spectrum band.

公开(公告)号：US11140558B2

公开(公告)日：2021-10-05

申请号：US16520107

申请日：2019-07-23

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Aleksandar Damnjanovic

IPC: H04W4/00 ,  H04W16/14 ,  H04L5/00 ,  H04W72/04 ,  H04W72/14 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit to a user equipment (UE) a control signal comprising a grant for a downlink transmission. The base station may perform, during a gap between the control signal and the downlink transmission, a clear channel assessment (CCA) procedure on a shared radio frequency spectrum band associated with the downlink transmission. The base station may perform, based at least in part on a success of the CCA procedure, the downlink transmission to the UE over the shared radio frequency spectrum band.

公开(公告)号：US20210289374A1

公开(公告)日：2021-09-16

申请号：US17196891

申请日：2021-03-09

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Vinay Chande ,  Jing Sun ,  Tao Luo ,  Juan Montojo ,  Arumugam Chendamarai Kannan

IPC: H04W24/08 ,  H04W24/10 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. The methods, systems, and devices may enable a base station to transmit a measurement configuration for measuring interference (e.g., cross link interference (CLI)). The measurement configuration may include a measurement direction configuration for measuring the interference. Additionally or alternatively, the UE may select a measurement direction configuration for measuring interference based on the measurement configuration. The UE may measure interference based on the measurement configuration. The UE may transmit a measurement report to the base station. The measurement report may include an indication of the selected measurement direction configuration.

公开(公告)号：US20210266962A1

公开(公告)日：2021-08-26

申请号：US17182508

申请日：2021-02-23

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Aleksandar Damnjanovic ,  Xiaoxia Zhang ,  Vinay Chande ,  Srinivas Yerramalli ,  Jing Sun ,  Tao Luo

IPC: H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described in which a transmitting device using shared radio frequency spectrum may perform a listen before talk (LBT) procedure for at least a minimum dwell time and, upon successful completion of the LBT procedure, may occupy the spectrum for up to a duration of a channel occupancy time (COT). The transmitting device may discontinue transmitting during the COT for a gap period, and resume transmitting subsequent to the gap period without performing another LBT procedure. The minimum dwell time may be based on a periodicity of a channel reservation signal transmitted by one or more other devices using the shared radio frequency spectrum. In some cases, the transmitting device may schedule one or more receiving devices with resources for transmissions during the COT, and the receiving devices may perform a LBT that is non-adjacent with an associated transmission.

公开(公告)号：US20210258928A1

公开(公告)日：2021-08-19

申请号：US17174242

申请日：2021-02-11

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Tao Luo ,  Xiaoxia Zhang ,  Jing Sun ,  Sungwoo Park ,  Arumugam Chendamarai Kannan ,  Wooseok Nam

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/08

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a configuration message indicating that a control resource set for a downlink control channel is associated with a plurality of demodulation reference signal (DMRS) ports. The UE may determine, based at least in part on the configuration message, that a first set of DMRS resource elements in a first symbol of the control resource set correspond to a first DMRS port of the plurality of DMRS ports and a second set of DMRS resource elements in a second symbol of the control resource set correspond to a second DMRS port of the plurality of DMRS ports. The UE may decode the downlink control channel based at least in part on the determining.