公开(公告)号：US20210250786A1

公开(公告)日：2021-08-12

申请号：US17169290

申请日：2021-02-05

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Wooseok Nam ,  Sungwoo Park

IPC: H04W24/02 ,  H04B17/318

Abstract: Methods, systems, and devices for wireless communications are described for joint communications among a UE and multiple transmission-reception points (TRPs) in which a subset of the multiple TRPs transmit periodic tracking reference signals (TRSs) for use in measurement and beam management at the UE and the multiple TRPs. The subset of TRPs may include TRPs having a relatively large contribution to signals received at the UE, and may transmit periodic (or semi-persistent) TRSs to be measured at the UE. One of the TRPs may provide configuration information to the UE of which TRPs are included in the subset of TRPs, or the UE may determine which TRPs are included in the subset of TRPs based on a signal quality of transmissions associated with each TRP.

公开(公告)号：US20210227526A1

公开(公告)日：2021-07-22

申请号：US17119845

申请日：2020-12-11

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W24/02

Abstract: Methods, systems, and devices for signaling for configuring downlink transmissions are described. A user equipment (UE) may receive a configuration message from a base station indicating that a control resource set (CORESET) for a downlink control channel is associated with a set of transmission configuration indicator (TCI) states. The UE may subsequently receive a control message from the base station activating one or more of the TCI states. The UE may decode the downlink control channel based on the configuration message and the one or more activated TCI states. The UE may identify one or more TCI states (e.g., associated with the CORESET) to apply to a reception of a physical downlink shared channel (PDSCH) transmission. The UE may determine to apply one or more of the TCI states activated by the control message. The UE may determine to apply one or more different TCI states.

公开(公告)号：US20210227525A1

公开(公告)日：2021-07-22

申请号：US17118970

申请日：2020-12-11

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L25/02 ,  H04B7/26 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a base station may transmit a control channel such as a PDCCH using one or more control resource sets (CORESETs). A CORESET may be associated with a number of different transmission configuration indicator (TCI) states which may specify information that a UE may use to receive the PDCCH. In some cases, the UE may identify an association between resources of the CORESET and a number of TCI states assigned to a CORESET using various different multiplexing techniques, such as time division multiplexing (TDM). Some associations between the resources of the CORESET and the TCI states may include a mapping of the resources of the CORESET to the different TCI states. The UE may decode the PDCCH based on the different TDM techniques used to configure the CORESET.

公开(公告)号：US20210219335A1

公开(公告)日：2021-07-15

申请号：US17105321

申请日：2020-11-25

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Mostafa Khoshnevisan ,  Wooseok Nam ,  Tao Luo ,  Jing Sun ,  Sungwoo Park ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Hua Wang ,  Yongbin Wei

IPC: H04W74/00 ,  H04W76/28 ,  H04W52/02

Abstract: Methods, systems, and devices for wireless communications are described. A base station may configure a user equipment (UE) with a multiple listen-before-talk (LBT) bandwidths, where each LBT bandwidth is associated with one or more downlink control channel candidates of a search space for a control resource set. The UE may monitor the LBT bandwidths during a wakeup signal period for a wakeup signal from the base station. The UE may be configured with a total number of blind hypotheses in the set of blind hypotheses which is equal to or greater than a total number of LBT bandwidths. The UE may determine whether to wake up and monitor an on duration of a discontinuous reception cycle based on detection of the wakeup signal.

公开(公告)号：US20210195555A1

公开(公告)日：2021-06-24

申请号：US17102956

申请日：2020-11-24

Applicant: QUALCOMM Incorporated

Inventor： Tianyang Bai ,  Junyi Li ,  Sungwoo Park ,  Wooseok Nam ,  Tao Luo

IPC: H04W72/00 ,  H04L5/00 ,  H04L1/18 ,  H04B1/713

Abstract: Methods, systems, and devices for wireless communications are described. Some wireless communications networks may implement aspects of a single frequency network (SFN), which may support multicast and broadcast transmissions. In some cases, a base station may use directional beamforming techniques to transmit a message to a user equipment (UE) using a first frequency configuration of the SFN. The base station may adjust the first frequency configuration to a second frequency configuration, and may transmit a retransmission of the message to the UE using the second frequency configuration.

公开(公告)号：US20210120529A1

公开(公告)日：2021-04-22

申请号：US16987000

申请日：2020-08-06

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo Park ,  Wooseok Nam ,  Tao Luo ,  Kiran Venugopal ,  Tianyang Bai ,  Xiaoxia Zhang

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

Abstract: Methods, systems, and devices for wireless communications are described. A base station may use beamforming to transmit control and data transmissions to a set of user equipments (UEs). A base station may transmit downlink control information (DCI) to UEs that may indicate a set of resource allocations in which the base station may schedule a data transmission, and a respective transmission configuration indicator (TCI) state. The TCI state may indicate which transmission beam the base station may use to transmit a data transmission in a particular resource allocation. The UE may receive and decode the DCI and identify resource allocation information and an index that may indicate one or more TCI states being used for transmitting a broadcast or unicast transmission to the UE within a resource allocation. The UE may select one or more of the resource allocations to monitor for, and subsequently receive, the data transmission.

公开(公告)号：US20210037512A1

公开(公告)日：2021-02-04

申请号：US16939867

申请日：2020-07-27

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communications are described. Aspects include configuring a user equipment (UE) to receive control signals from a first transmission reception point (TRP) and a second TRP. A first TRP may transmit a control signal to the UE indicating resources for receiving a medium access control element (MAC-CE), where the control signal includes an indication that associates the MAC-CE with the first TRP. The first TRP may transmit the MAC-CE to the UE which may include a beam update indication for the first TRP. The UE may transmit an acknowledgement to the first TRP based on receiving the MAC-CE. The UE may also transmit an acknowledgment to the second TRP indicating that it has received a beam update indication from the first TRP. In some cases, the first TRP may send a MAC-CE signal to the UE including beam update information for the second TRP.

公开(公告)号：US20200382194A1

公开(公告)日：2020-12-03

申请号：US16880914

申请日：2020-05-21

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/06 ,  H04W72/08 ,  H04W72/02 ,  H04W72/04

Abstract: Techniques are described for selecting transmit beam sets in multi-stream environments as part of beam selection procedures. The selection procedures and the reporting procedures of the beam selection procedures may include reporting information about potential sources of interference for the selected transmit beams. A base station may transmit reference signals to a user equipment (UE) as part of a beam sweep of directional beams. The UE may measure signal quality parameters associated with the reference signals and may select a plurality of transmit beam set candidates based on the signal quality parameters. The UE may report to the base station information related to inter-beam interference in multi-stream environments. The base station may determine which transmit beams to use to transmit information to the UE based on the report received from the UE that include information about inter-beam interference.

公开(公告)号：US20200296667A1

公开(公告)日：2020-09-17

申请号：US16789400

申请日：2020-02-12

Applicant: QUALCOMM Incorporated

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

IPC: H04W52/02 ,  H04W76/28 ,  H04W76/27 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may monitor for transmissions during an on-duration of a discontinuous reception cycle. The UE may receive one or more go-to-sleep indications from one or more transmission/reception points (TRPs), and may discontinue monitoring for transmissions from one or more of the TRPs responsive to the one or more go-to-sleep indications. Each TRP of the two or more TRPs may transmit a separate per-TRP go-to-sleep signal that indicates that the TRP will not transmit during a time period associated the go-to-sleep signal. In other cases, a TRP may transmit a cross-TRP go-to-sleep signal that has go-to-sleep indications for multiple TRPs.

公开(公告)号：US12289611B2

公开(公告)日：2025-04-29

申请号：US17377237

申请日：2021-07-15

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo Park ,  Wooseok Nam ,  Tao Luo ,  Junyi Li ,  Juan Montojo ,  Jing Sun ,  Xiaoxia Zhang ,  Peter Gaal ,  Taesang Yoo ,  Simone Merlin ,  Srinivas Yerramalli ,  John Edward Smee

IPC: H04W16/28 ,  H04B7/06 ,  H04W24/10

Abstract: A method, apparatus, or computer-readable medium with instructions for beam management for radio frequency (RF) sensing at a wireless device. The wireless device performs a first beamsweep of an RF signal and measures a reflection of the RF signal based on the first beamsweep. The wireless device performs a second beamsweep of the RF signal, wherein the first beamsweep is based on a different parameter than the second beamsweep and measures the reflection of the RF signal based on the second beamsweep. The wireless device selects a beam for RF sensing based on the first beamsweep and the second beamsweep.