公开(公告)号：US11463885B2

公开(公告)日：2022-10-04

申请号：US16914794

申请日：2020-06-29

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tanumay Datta ,  Kapil Bhattad ,  Ananta Narayanan Thyagarajan ,  Xiaoxia Zhang

IPC: H04W16/14 ,  H04W72/04 ,  H04L5/00 ,  H04L25/02 ,  H04L1/00 ,  H04L27/26 ,  H04W8/24 ,  H04W74/08

Abstract: A user equipment (UE) may employ an extended cyclic prefix, a postfix, or both for sounding reference signal (SRS) transmissions, such that gaps between SRS transmissions are long enough for UE antenna switching operations, but shorter in duration than any maximum channel vacancy time durations set by a wireless communications system. Further, UEs may transmit SRSs to base stations in accordance with an SRS configuration. For example, a base station may provide SRS configuration information to a UE that indicates, for example, information related to SRS scheduling, subband information, a cyclic prefix length, a cyclic postfix length, listen-before-talk (LBT) type information, an SRS trigger, an SRS cancellation procedure, or any combinations thereof. Based on such SRS configuration information, a UE may perform partial subband SRS techniques, subband selection techniques, SRS bandwidth adaptation techniques, LBT type configuration techniques, etc.

公开(公告)号：US11463195B2

公开(公告)日：2022-10-04

申请号：US16830132

申请日：2020-03-25

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Jing Sun ,  Kapil Bhattad ,  Xiaoxia Zhang

IPC: H04L1/00 ,  H04L1/18 ,  H04W24/08 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described to enable a user equipment (UE) to identify one or more missed downlink control messages. The UE may use indicators received with downlink control messages to order the downlink control messages and determine if a message is missing. Indicators in different downlink control messages may be transmitted using different numbers of bits, and the UE may use methods to compare the indicators with different bit sizes. The UE may compare all the indicators using the smallest indicator bit size or may compare indicators in sequential pairs, using a shared bit size for indicators having a same bit size and using a smallest bit size for indicators having different bit sizes. After comparing indicators and determining if one or more messages are missing, the UE may notify the base station of any missing downlink control messages using a feedback message.

公开(公告)号：US11463192B2

公开(公告)日：2022-10-04

申请号：US16799515

申请日：2020-02-24

Applicant: QUALCOMM Incorporated

Inventor： Heechoon Lee ,  Peter Gaal ,  Jing Sun ,  Wanshi Chen

IPC: H04L1/00 ,  H04L5/00 ,  H04W72/04

Abstract: Techniques for monitoring for control information in sets of downlink control channel resources are described, where multiple sets of downlink control channel resources may overlap. The described techniques include monitoring for one or more search spaces in a set of downlink control channel resources by rate matching downlink control channel resources independently of other sets of downlink control channel resources. Alternatively, overlapping sets of downlink control channel resources may be rate-matched accounting for reference signals of overlapping sets of downlink control channel resources.

公开(公告)号：US20220312380A1

公开(公告)日：2022-09-29

申请号：US17213165

申请日：2021-03-25

Applicant: QUALCOMM Incorporated

Inventor： Yitao Chen ,  Mostafa Khoshnevisan ,  Jing Sun ,  Xiaoxia Zhang ,  Tao Luo ,  Wooseok Nam ,  Peter Gaal

IPC: H04W72/02 ,  H04W72/12 ,  H04W24/08 ,  H04W72/04

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for maintaining, between a user equipment (UE) and a component of a base station (BS), a mutual understanding of a set of linked physical downlink control channel (PDCCH) candidates if the UE selects to monitor a subset of the linked PDCCH candidates. In one aspect, the UE may monitor the subset of the linked PDCCH candidates, and the UE and the component of the BS may select a reference PDCCH candidate from which to define scheduling information in accordance with the UE monitoring the subset of the linked PDCCH candidates. In some examples, the UE and the component of the BS may select the reference PDCCH candidate in accordance with one or more mutually understood rules or procedures such that the UE and the component of the BS may select a same reference PDCCH candidate.

公开(公告)号：US11456904B2

公开(公告)日：2022-09-27

申请号：US17214027

申请日：2021-03-26

Applicant: QUALCOMM Incorporated

Inventor： Mehmet Izzet Gurelli ,  Qiang Wu ,  Jing Sun ,  Xiaoxia Zhang ,  Tao Luo ,  Iyab Issam Sakhnini ,  Jun Ma ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Juan Montojo ,  Peter Gaal

IPC: H04L27/26

Abstract: Orthogonal frequency-division multiplexing (OFDM) numerologies that maintain symbol boundary alignment while distributing excess cyclic prefixes (CPs) among OFDM symbols. Communication is established using a first sub-carrier spacing (SCS) and a first OFDM numerology, such as an exemplary numerology that distributes excess CP duration among a set of symbols that occupy a time interval within or equal to a corresponding time interval of a symbol of a second OFDM numerology with a second lower SCS. The first SCS may be, e.g., 960 kHz. The second SCS may be, e.g., 120 kHz. Another exemplary OFDM numerology described herein distributes the excess CP as prefix and postfix portions to one of the symbols, such as the first symbol of a set. Communication then proceeds using the first OFDM numerology at the first SCS and, in illustrative examples, using the second OFDM numerology at the second SCS or other OFDM numerologies at other SCSs.

公开(公告)号：US20220304030A1

公开(公告)日：2022-09-22

申请号：US17582473

申请日：2022-01-24

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Xiaoxia Zhang ,  Jing Sun

IPC: H04W72/12 ,  H04L5/00 ,  H04L1/08

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling identifying a scheduling configuration indicating a first search space set and a second search space set of a scheduling component carrier for scheduling communications on a scheduled component carrier, and may identify a search space set linking configuration for a group of search space sets of the scheduled component carrier based on the scheduling configuration. The UE may identify a set of decoding candidates within the first and second search space sets which are allocated for cross-carrier scheduling of the scheduled component carrier based on the search space set linking configuration. The UE may then receive at least one control message schedules a communication between the base station and the UE over the scheduled component carrier within at least one decoding candidate, and may perform the scheduled communication over the scheduled component carrier.

公开(公告)号：US20220303880A1

公开(公告)日：2022-09-22

申请号：US17696715

申请日：2022-03-16

Applicant: QUALCOMM Incorporated

Inventor： Kazuki Takeda ,  Jing Sun ,  Mostafa Khoshnevisan

IPC: H04W48/16

Abstract: Methods, systems, and devices for wireless communications are described, that provide for configuration and switching between multiple groups of search space sets based on activated serving cells or activated resources for one or more serving cells. An access network entity may configure multiple groups of search space sets, and a user equipment (UE) may monitor for control information in an activated search space set group. A first group of search space sets may be activated based on a serving cell being activated, and the UE may switch to a second group of search space sets when the serving cell is deactivated. Search space set group switching also may be performed based on one or more activated bandwidth parts (BWPs). An access network entity may trigger search space set group switching using explicit signaling, based on cell activation/deactivation, based on a timer, or any combinations thereof.

公开(公告)号：US11451323B2

公开(公告)日：2022-09-20

申请号：US17067027

申请日：2020-10-09

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Yang Yang ,  Heechoon Lee

IPC: H04L5/00 ,  H04L1/00 ,  H04W72/04 ,  H04L1/18

Abstract: A method and apparatus for determining rate matching behavior for a plurality of control resource sets (CORESETs) is provided. A base station (BS) bundles a plurality of CORESETs into a global resource set. The BS configures the global resource set for a User Equipment (UE). The BS determines resources assigned to a downlink data channel overlap at least a portion of the global resource set and determines whether data on the downlink data channel is to be rate matched around the global resource set or is to use resources in the global resource set. The BS transmits the data on the downlink data channel based on the determination of the rate matching.

公开(公告)号：US11438833B2

公开(公告)日：2022-09-06

申请号：US16716138

申请日：2019-12-16

Applicant: QUALCOMM Incorporated

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

IPC: H04W48/20 ,  H04W24/10 ,  H04W76/27 ,  H04W76/11 ,  H04W8/24

Abstract: Methods, systems, and devices for multi-transmit receive point candidate identification are described. A base station may indicate, to a user equipment (UE), one or more measurements to be performed on multiple transmit receive points (TRPs) for determination of TRP candidates for communications between the UE and the base station. The UE may perform the measurements on each of the TRPs, and transmit a report to the base station that is based on the measurements. The report may be associated with the TRP candidates. The base station may select one or more of the TRP candidates for communications with the UE, and may indicate the selected TRP candidates to the UE.

公开(公告)号：US20220279377A1

公开(公告)日：2022-09-01

申请号：US17249409

申请日：2021-03-01

Applicant: QUALCOMM INCORPORATED

Inventor： Chih-Hao Liu ,  Jing Sun ,  Yisheng Xue ,  Xiaoxia Zhang ,  Ozcan Ozturk

IPC: H04W28/02 ,  H04W72/02 ,  H04W72/14 ,  H04W72/12 ,  H04W72/04 ,  H04W80/02 ,  H04B7/06 ,  H04B7/0456

Abstract: Wireless communications systems and methods related to providing subchannel selection or recommendation and/or channel state information (CSI) for sidelink communications (e.g., operating in mode-1 radio resource allocation (RRA) via a buffer status report (BSR) are provided. A first user equipment (UE) transmits, to a base station (BS), a BSR indicating subchannel information associated with one or more UEs. The UE receives, from the BS in response to the BSR report, a grant for transmitting a first sidelink transmission to a second UE of the one or more UEs. The UE transmits, to the second UE based on the grant, the first sidelink transmission.