公开(公告)号：US20230171779A1

公开(公告)日：2023-06-01

申请号：US17911118

申请日：2020-03-23

Applicant: QUALCOMM Incorporated

Inventor： Changlong XU ,  Jing SUN ,  Xiaoxia ZHANG

IPC: H04W72/21

CPC classification number: H04W72/21

Abstract: A base station (BS) may cancel an uplink transmission that was previously scheduled for a user equipment (UE). For example, after scheduling a first UE for an uplink transmission on a particular resource, a BS may elect to schedule a second UE with higher priority traffic on at least a portion of that same resource. In this case, the BS may send an uplink cancelation indication (UL CI) to instruct the first UE to cancel its transmission. In some examples, for uplink transmissions on unlicensed radio frequency spectrum where an interlace structure and resource block (RB) sets are used for frequency-domain resource allocation, an UL CI may indicate interlace and/or RB set parameters for the frequency domain

公开(公告)号：US20230139558A1

公开(公告)日：2023-05-04

申请号：US17917530

申请日：2020-04-16

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao LIU ,  Yisheng XUE ,  Jing SUN ,  Xiaoxia ZHANG ,  Changlong XU

IPC: H04L5/00

Abstract: Wireless communication devices are adapted to facilitate discovery reference signal transmissions. According to one example, a wireless communication device can schedule a discovery reference signal (DRS) window including a plurality of synchronization signal blocks (SSBs) per QCL'd beam, a first coreset, and a second coreset. The wireless communication device may further transmit the generated DRS window. Additional wireless communication devices may receive a wireless transmission including a DRS window with a plurality of SSBs on each of a plurality of QCL'd beams, a first coreset, and a second coreset. At least one SSB and at least the first coreset may be detected, and a PDCCH may be decoded. Other aspects, embodiments, and features are also included.

公开(公告)号：US20230131862A1

公开(公告)日：2023-04-27

申请号：US17918794

申请日：2020-04-30

Applicant: QUALCOMM Incorporated

Inventor： Yisheng XUE ,  Jing SUN ,  Chih-Hao LIU ,  Xiaoxia ZHANG ,  Ozcan OZTURK ,  Changlong XU

IPC: H04W72/25 ,  H04W72/02 ,  H04W28/02

Abstract: Wireless communications systems and methods related to stand-alone sidelink communication are provided. A first user equipment (UE) transmits a sidelink system information signal including an indication of a first preconfigured profile of a plurality of preconfigured profiles. The first UE communicates, with a second UE, a first sidelink transmission based at least in part on the first preconfigured profile.

公开(公告)号：US20230090832A1

公开(公告)日：2023-03-23

申请号：US17759553

申请日：2020-03-26

Applicant: QUALCOMM Incorporated

Inventor： Changlong XU ,  Jing SUN ,  Xiaoxia ZHANG

IPC: H04W74/08 ,  H04W72/14 ,  H04W72/12 ,  H04L27/26

Abstract: Wireless communications systems and methods related to uplink (UL) transmissions with CP extensions. A user equipment (UE) receives, from a base station (BS), one or more grants for a plurality of uplink transmissions in a shared radio frequency band. The UE determines a cyclic prefix (CP) extension length for a first uplink transmission of the plurality of uplink transmissions such that a first gap duration between a second uplink transmission of the plurality of uplink transmissions and the first uplink transmission satisfies a first time threshold for transmitting the first uplink transmission in the shared radio frequency band without a listen-before-talk (LBT), the second uplink transmission preceding the first uplink transmission. The UE transmits, to the BS in the shared radio frequency band, one or more uplink transmissions of the plurality of uplink transmissions, where the first uplink transmission with the first CP extension is transmitted without performing the LBT.

公开(公告)号：US20230072054A1

公开(公告)日：2023-03-09

申请号：US17759620

申请日：2020-03-13

Applicant: QUALCOMM Incorporated

Inventor： Kangqi LIU ,  Changlong XU ,  Jian LI ,  Liangming WU ,  Hao XU

IPC: H04L9/40 ,  H04L1/00 ,  H04W28/04

Abstract: Methods, systems, and devices for wireless communications are described. An encoding device may encode a set of source symbols using one or more raptor codes to generate a first set of encoded symbols and may transmit the first set of encoded symbols to a decoding device. The decoding device may successfully recover a source symbol of the set of source symbols from the first set of encoded symbols and may transmit an indication of the source symbol to the encoding device. The encoding device may encode one or more source symbols of the set of source symbols using the one or more raptor codes to generate a second set of encoded symbols based on receiving the indication of the source symbol and may transmit the second set of encoded symbols to the decoding device.

公开(公告)号：US20230045278A1

公开(公告)日：2023-02-09

申请号：US17789026

申请日：2020-01-17

Applicant: QUALCOMM Incorporated

Inventor： Changlong XU ,  Jing SUN ,  Xiaoxia ZHANG

IPC: H04W74/08 ,  H04W72/12

Abstract: Aspects described herein relate to determining a configuration indicating multiple synchronization points, in time, for contention-based communications, determining, for a given synchronization point of the multiple synchronization points, a contention window using a deterministic function based at least in part on one or more configured parameters, and transmitting, during the contention window, one or more contention-based signals in an attempt to acquire a channel for transmitting communications.

公开(公告)号：US20220416955A1

公开(公告)日：2022-12-29

申请号：US17904784

申请日：2021-04-30

Applicant: QUALCOMM Incorporated

Inventor： Yisheng XUE ,  Jing SUN ,  Xiaoxia ZHANG ,  Chih-Hao LIU ,  Ozcan OZTURK ,  Tao LUO ,  Juan MONTOJO ,  Peter GAAL ,  Mostafa KHOSHNEVISAN ,  Piyush GUPTA ,  Changlong XU

IPC: H04L1/18 ,  H04W72/12

Abstract: A method, a computer-readable medium, and an apparatus are provided for wireless communication at a user equipment (UE) and a base station. The UE receives a configuration for a plurality of semi-persistent scheduling (SPS) occasions each SPS occasion including multiple opportunities for a downlink transmission by a base station. The UE monitors for the downlink transmission during one or more opportunities of an SPS occasion. The base station transmits a packet to the UE in an opportunity of an SPS occasion based on an arrival time of the packet. In various configurations, a base station may transmit first information via a first communication opportunity and second information via a second communication opportunity of that same SPS occasion. A wireless communication device may monitor all communication opportunities of an SPS occasion to decode the information sent in two or more of the communication opportunities of the SPS occasion.

公开(公告)号：US20220386240A1

公开(公告)日：2022-12-01

申请号：US17754979

申请日：2019-11-18

Applicant: Changlong XU ,  Jing SUN ,  Xiaoxia ZHANG ,  QUALCOMM Incorporated

Inventor： Changlong XU ,  Jing SUN ,  Xiaoxia ZHANG

IPC: H04W52/02

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may monitor a subset of time resources in a wake up signal (WUS) pool, wherein the WUS pool includes contiguous candidate time resources for receiving a WUS. The UE may detect the WUS based at least in part on monitoring the subset of time resources. Numerous other aspects are provided.

公开(公告)号：US20220337337A1

公开(公告)日：2022-10-20

申请号：US17753115

申请日：2020-08-17

Applicant: QUALCOMM Incorporated

Inventor： Changlong XU ,  Ruiming ZHENG ,  Tao LUO ,  Hao XU

IPC: H04L1/00

Abstract: An apparatus, such as a base station, may determine channel conditions associated with at least two carriers on which communication with another apparatus is configured. The apparatus may encode a dataset into a set of protocol data units (PDUs) using fountain coding based on the channel conditions. The apparatus may send a first subset of the set of PDUs to the other apparatus on a first carrier of the at least two carriers. The apparatus may send a second subset of the set of PDUs to the other apparatus on a second carrier of the at least two carriers. Another apparatus, such as a user equipment (UE), may receive the set of PDUs from the apparatus over the at least two carriers, and may decode the set of PDUs to obtain a dataset using fountain coding.

公开(公告)号：US20220200634A1

公开(公告)日：2022-06-23

申请号：US17567587

申请日：2022-01-03

Applicant: QUALCOMM Incorporated

Inventor： Changlong XU ,  Jian LI ,  Chao WEI ,  Jilei HOU

IPC: H03M13/00 ,  H03M13/13

Abstract: Various aspects of the disclosure relate to rate matching techniques for block encoding. In some aspects, a decision regarding whether to use repetition-based rate matching or puncture-based rate matching is made based on a block size of information being encoded. In some aspects, repetition-based rate matching uses a bit-reversal permutation technique.