公开(公告)号：US11664947B2

公开(公告)日：2023-05-30

申请号：US16001291

申请日：2018-06-06

Applicant: QUALCOMM Incorporated

Inventor： Heechoon Lee ,  Jing Jiang ,  Jing Sun

IPC: H04L5/00 ,  H04J11/00 ,  H04B7/0452 ,  H04W72/04

CPC classification number: H04L5/0051 ,  H04B7/0452 ,  H04J11/00 ,  H04J2011/0006 ,  H04J2011/0009 ,  H04J2011/0013 ,  H04L5/0007 ,  H04L5/0092 ,  H04W72/042

Abstract: Various aspects described herein relate to techniques for using orthogonal demodulation reference signals (DMRSs) for downlink control channels in wireless communications systems. In an aspect, a method for a user equipment (UE) includes receiving one or more DMRSs over a multi-symbol downlink control channel. The method may further include identifying a time-first control channel element (CCE)-to-resource element group (REG) mapping for the multi-symbol downlink control channel, and identifying an orthogonal DMRS of the one or more DMRSs based on the time-first CCE-to-REG mapping, and decoding the multi-symbol downlink control channel based on at least the identified orthogonal DMRS.

公开(公告)号：US11601961B2

公开(公告)日：2023-03-07

申请号：US17138720

申请日：2020-12-30

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Peter Gaal ,  Alexei Yurievitch Gorokhov ,  Tingfang Ji ,  Brian Clarke Banister ,  Wanshi Chen ,  Joseph Binamira Soriaga ,  Huilin Xu ,  John Edward Smee ,  Heechoon Lee ,  Hari Sankar

IPC: H04W4/00 ,  H04W72/1273 ,  H04W72/14 ,  H04L5/00 ,  H04W72/0453 ,  H04W72/0446

Abstract: Methods, systems, and devices for wireless communications are described. A base station may implement cross-carrier scheduling. A user equipment (UE) may identify a minimum scheduling delay and may receive a downlink grant on a first CC. The UE may further identify the slot in which a downlink data transmission corresponding to the downlink grant will be received, and may identify the slot such that the minimum scheduling delay is satisfied. The UE may the receive the downlink data transmission, as indicated in the downlink grant, in the identified slot. In some examples, the UE and the base station may alternate between a long minimum scheduling delay and a short minimum scheduling delay. In some examples, the UE and the base station may alternate between a cross-carrier mode, and a self-scheduling mode.

公开(公告)号：US11582741B2

公开(公告)日：2023-02-14

申请号：US17328455

申请日：2021-05-24

Applicant: QUALCOMM Incorporated

Inventor： Chih-Ping Li ,  Wanshi Chen ,  Heechoon Lee ,  Peter Gaal

IPC: H04W72/04 ,  H04L5/00 ,  H04W56/00 ,  H04L1/12 ,  H04W72/0453

Abstract: Aspects of the present disclose provide various methods and apparatuses for communicating, controlling, and configuring component carrier and bandwidth part (BWP). A scheduling entity receives a capability report from a user equipment (UE). The capability report indicates a capability of the UE to utilize at least one of carrier aggregation (CA) or one or more bandwidth parts. The scheduling entity transmits a command to the UE to reconfigure at least one of a CA configuration or a bandwidth part (BWP) configuration. The scheduling entity determines an anticipated response timing of an acknowledgment (ACK) of the command based on the capability report received from the UE. The scheduling entity receives the ACK according to the anticipated response timing.

公开(公告)号：US11558814B2

公开(公告)日：2023-01-17

申请号：US16739035

申请日：2020-01-09

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Gabi Sarkis ,  Peter Gaal ,  Wanshi Chen ,  Joseph Binamira Soriaga ,  Heechoon Lee ,  Seyedkianoush Hosseini ,  Huilin Xu ,  Wooseok Nam ,  Hung Dinh Ly

IPC: H04W52/02 ,  H04W72/04

Abstract: A UE may enter a dormant state, e.g., for power savings. The systems, methods, and apparatus described herein may provide ways for the UE to transition between an active state and a dormant state, as well as UE behavior in a dormant state. The apparatus may be a UE configured to receive an indication of a bandwidth part (BWP) switch for a secondary cell and to transition between an active state and a dormant state for the secondary cell based on the indication of the BWP switch.

公开(公告)号：US11540262B2

公开(公告)日：2022-12-27

申请号：US16929562

申请日：2020-07-15

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Piyush Gupta ,  Wanshi Chen ,  Heechoon Lee

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00 ,  H04L1/00 ,  H04W72/14 ,  H04W72/12

Abstract: Aspects of the disclosure relate to communication systems, apparatus and methods which enable or support transmitting/receiving downlink control information (DCI) carrying a downlink grant or an uplink grant. A method includes detecting a reference length based on an effective length of a downlink (DL) grant DCI and an effective length of an uplink (UL) grant DCI and calculating a length difference based on the effective DL grant DCI length and the effective UL grant DCI length. A length of a padding field in the DL grant DCI and/or the UL grant DCI is set equal to the calculated length difference such that the lengths of the DL grant DCI and UL grant DCI are both equal to the reference length. Padding bits are inserted in the padding field of the DL grant DCI and/or the UL grant DCI. Thereafter, the DL grant DCI and/or the UL grant DCI is encoded and transmitted to a scheduled entity.

公开(公告)号：US11515981B2

公开(公告)日：2022-11-29

申请号：US16995587

申请日：2020-08-17

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Heechoon Lee ,  Tao Luo ,  Peter Gaal ,  Jing Sun

IPC: H04L5/00 ,  H04W76/27 ,  H04W76/11 ,  H04W72/04 ,  H04W48/10 ,  H04W80/02 ,  H04B7/0413

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may determine updated system information for a user equipment (UE), wherein the UE is associated with an initial access bandwidth part (BWP) and a configured BWP; and transmit the updated system information to the UE using at least one of unicast signaling, multicast signaling, the configured BWP, or a particular BWP that is different from the configured BWP. Numerous other aspects are provided.

公开(公告)号：US11477826B2

公开(公告)日：2022-10-18

申请号：US16510692

申请日：2019-07-12

Applicant: QUALCOMM Incorporated

Inventor： Yeliz Tokgoz ,  Heechoon Lee ,  Tingfang Ji ,  Gavin Bernard Horn ,  Ozcan Ozturk

IPC: H04W74/08 ,  H04W72/08 ,  H04W76/10 ,  H04L5/14 ,  H04W68/02

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive system information for a first cell on a second cell, wherein the UE is camped on the second cell, and wherein the system information for the first cell is received with system information for the second cell; access an uplink of the first cell using the system information for the first cell; and establish a connection on the first cell as a serving cell. Numerous other aspects are provided.

公开(公告)号：US11456830B2

公开(公告)日：2022-09-27

申请号：US16225941

申请日：2018-12-19

Applicant: QUALCOMM Incorporated

Inventor： Heechoon Lee ,  Peter Pui Lok Ang ,  Jing Sun ,  Tao Luo ,  Peter Gaal ,  Wanshi Chen

IPC: H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A base station may determine that a triggering event associated with a user equipment (UE) has occurred. The UE may receive, based at least in part on an occurrence of a triggering event associated with the UE, a trigger signal that identifies resources to be used for transmission of an aperiodic tracking reference signal (TRS). The UE may receive the aperiodic TRS based at least in part on the trigger signal and the identified resources. The UE may perform at least one of a tracking function, or a synchronization function, or an alignment function, or a combination thereof, in response to the occurrence of the triggering event and based at least in part on the aperiodic TRS.

公开(公告)号：US11419083B2

公开(公告)日：2022-08-16

申请号：US16680211

申请日：2019-11-11

Applicant: QUALCOMM Incorporated

Inventor： Heechoon Lee ,  Hung Ly ,  Tingfang Ji ,  Haitong Sun ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu

IPC: H04W56/00 ,  H04L1/16 ,  H04W72/00 ,  H04L5/00

Abstract: Split synchronization signal configuration for unified synchronization channels and techniques for indicating communication block boundaries in wireless communication systems that use a unified synchronization signal configuration that may be used in different communication modes are described. The disclosed split synchronization signal configuration allows the same synchronization signal configuration to be used in different communication modes (or numerologies) that operate on different frequencies. The boundary indication techniques of embodiments allow efficient indication of the beginning of a communication block (such as a frame, subframe, or slot) relative to the beginning of a unified synchronization signal configuration.

公开(公告)号：US11388713B2

公开(公告)日：2022-07-12

申请号：US16725160

申请日：2019-12-23

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Heechoon Lee

IPC: H04W72/04 ,  H04W76/27 ,  H04B7/26 ,  H04L5/00 ,  H04L5/14

Abstract: Wireless communications systems and methods related to multi-slot slot format indicators (SFIs) are provided. In one embodiment, a first wireless communication device communicates, with a second wireless communication device, a first SFI for a first set of slots and a second SFI for a second set of slots overlapping with the first set of slots. The first wireless communication device communicates with the second wireless communication device based on at least one of the first SFI or the second SFI. In one embodiment, a first wireless communication device communicates, with a second wireless communication device, a configuration for a first slot and an SFI indicating slot formats for a set of slots including the first slot. The SFI indicates an unspecified slot format for the first slot. The first wireless communication device communicates with the second wireless communication device in the first slot based on the configuration.