公开(公告)号：US20240381426A1

公开(公告)日：2024-11-14

申请号：US18636029

申请日：2024-04-15

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao LIU ,  Giovanni CHISCI ,  Jing SUN ,  Xiaoxia ZHANG

IPC: H04W74/0816 ,  H04L5/00 ,  H04W52/52 ,  H04W72/25 ,  H04W74/08

Abstract: A method for wireless communication at a first user equipment (UE) includes performing, in a shared radio frequency band, a listen-before-talk (LBT) procedure for a channel occupancy time (COT). The method also includes selecting a first or second starting symbol for an initial slot based on a timing associated with the LBT procedure indicating a clearance, the initial slot having a first or second total number of symbols in accordance with selecting the first starting symbol or the second starting symbol. The method further includes selecting either a first or second demodulation reference signal (DM-RS) pattern from a group of DM-RS patterns in accordance with the initial slot having the first total number of symbols or the initial slot having the second total number of symbols. The method also includes transmitting, during the COT, sidelink information to a second UE via a sequence of slots that include the initial slot.

公开(公告)号：US20240349100A1

公开(公告)日：2024-10-17

申请号：US18417524

申请日：2024-01-19

Applicant: QUALCOMM Incorporated

Inventor： Chu-Hsiang HUANG ,  Chih-Hao LIU ,  Jae Ho RYU

IPC: H04W24/10 ,  H04L5/00 ,  H04W72/40

CPC classification number: H04W24/10 ,  H04L5/0058 ,  H04W72/40

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine whether a sidelink synchronization signal (SLSS) is received from a synchronization reference (SyncRef) UE during a measurement evaluation period, the measurement evaluation period being based at least in part on a quantity of sidelink synchronization signal block (S-SSB) periods in which the SLSS from the SyncRef UE is not available. The UE may perform an initiation or a cease of an SLSS transmission of the UE based at least in part on whether the SLSS is received from SyncRef UE during the measurement evaluation period. Numerous other aspects are described.

公开(公告)号：US20240323871A1

公开(公告)日：2024-09-26

申请号：US18187980

申请日：2023-03-22

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao LIU ,  Jing SUN ,  Xiaoxia ZHANG ,  Giovanni CHISCI

IPC: H04W52/52 ,  H04L27/26 ,  H04W72/25

CPC classification number: H04W52/52 ,  H04L27/26025 ,  H04W72/25

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may transmit, to a second UE, one or more automatic gain control (AGC) symbols at an AGC candidate location based at least in part on an AGC slot structure for a sidelink frequency range. The first UE may transmit, to the second UE, one or more of a physical sidelink control channel (PSCCH) transmission, a physical sidelink shared channel (PSSCH) transmission, or a physical sidelink feedback channel (PSFCH) transmission based at least in part on the AGC slot structure for the sidelink frequency range. Numerous other aspects are described.

公开(公告)号：US20240314792A1

公开(公告)日：2024-09-19

申请号：US18670432

申请日：2024-05-21

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/23 ,  H04L1/1867 ,  H04W24/08 ,  H04W72/0446 ,  H04W74/0808

CPC classification number: H04W72/23 ,  H04L1/1896 ,  H04W24/08 ,  H04W72/0446 ,  H04W74/0825

Abstract: Methods, systems, and devices for wireless communications are described. In some examples, a base station may transmit, to a secondary user equipment (UE), a first grant to conditionally transmit one or more data messages over a first set of resources upon completion of a detection procedure. The detection procedure may include monitoring a second set of resources for over-the-air (OTA) signals transmitted by a primary UE pursuant to a second grant, where the first set of resources at least partially overlaps the second set of resources. The UE may monitor for the OTA signals from the primary UE, determine that one or more conditions for transmission of the one or more data messages have been satisfied, and transmit the one or more data messages over the first set of resources.

公开(公告)号：US20240284335A1

公开(公告)日：2024-08-22

申请号：US18567735

申请日：2021-08-30

Applicant: QUALCOMM Incorporated

Inventor： Luanxia YANG ,  Jing SUN ,  Changlong XU ,  Aleksandar DAMNJANOVIC ,  Xiaoxia ZHANG ,  Shaozhen GUO ,  Chih-Hao LIU

IPC: H04W52/02 ,  H04W72/40

CPC classification number: H04W52/0235 ,  H04W72/40

Abstract: A method of wireless communication by a sidelink user equipment (UE) includes selecting a sidelink wakeup signal (WUS) resource from a dedicated sidelink WUS resource pool. The sidelink WUS resource pool differs from a sidelink data transmission resource pool. The method also includes transmitting, to a receiver, a WUS on the selected sidelink WUS resource.

公开(公告)号：US20240267161A1

公开(公告)日：2024-08-08

申请号：US17918477

申请日：2020-05-14

Applicant: QUALCOMM Incorporated

Inventor： Changlong XU ,  Jing SUN ,  Xiaoxia ZHANG ,  Tao LUO ,  Peter GAAL ,  Juan MONTOJO ,  Rajat PRAKASH ,  Ozcan OZTURK ,  Mostafa KHOSHNEVISAN ,  Chih-Hao LIU

IPC: H04L1/1829

CPC classification number: H04L1/1861

Abstract: Wireless communications systems and methods related to communicating ACK/NACK feedbacks for multi-user and unicast physical down-link shared channel (PDSCH) communications are provided. A UE may receive a multi-user PDSCH communication including a first transport block (TB) for the UE and may receive a unicast PDSCH communication including a second TB for the UE. The UE may determine a hybrid automatic repeat request (HARQ) codebook for the first TB associated with the multi-user PDSCH communication and the second TB associated with the unicast PDSCH communication. The UE may transmit a first acknowledgement/negative-acknowledgment (ACK/NACK) feedback for the first TB and a second ACK/NACK feedback for the second TB based on the determined HARQ codebook.

公开(公告)号：US20240155686A1

公开(公告)日：2024-05-09

申请号：US18464962

申请日：2023-09-11

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao LIU ,  Xiaoxia ZHANG ,  Qing LI ,  Jing SUN ,  Giovanni CHISCI

IPC: H04W74/08

CPC classification number: H04W74/0816 ,  H04W74/0866 ,  H04W92/18

Abstract: Aspects relate to selection of a channel access priority class (CAPC) table for a sidelink channel access procedure on an unlicensed carrier in a sidelink network. A wireless communication device (e.g., a UE or sidelink device) may select between a downlink CAPC table and an uplink CAPC table based on at least one of a sidelink mode, a role of the wireless communication device in the sidelink network, a cast type of sidelink traffic to be transmitted by the wireless communication device, or a channel type of the sidelink traffic.

公开(公告)号：US20240057155A1

公开(公告)日：2024-02-15

申请号：US18057383

申请日：2022-11-21

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao LIU ,  Jing SUN ,  Xiaoxia ZHANG ,  Giovanni CHISCI

IPC: H04W74/08 ,  H04W72/0446 ,  H04W48/08

CPC classification number: H04W74/0808 ,  H04W72/0446 ,  H04W48/08

Abstract: Wireless communications systems, apparatuses, and methods are provided. A method of wireless communication performed by a first sidelink user equipment (UE) includes performing a listen-before-talk (LBT) procedure and transmitting, to a second sidelink UE based on the LBT procedure being successful, a sidelink synchronization signal block (S-SSB) in one of a plurality of candidate S-SSB locations of a slot.

公开(公告)号：US20240057141A1

公开(公告)日：2024-02-15

申请号：US17819164

申请日：2022-08-11

Applicant: QUALCOMM Incorporated

Inventor： Jae Ho RYU ,  Chih-Hao LIU ,  Hari SANKAR

IPC: H04W72/12 ,  H04W74/08 ,  H04W16/14

CPC classification number: H04W72/1252 ,  H04W74/0808 ,  H04W16/14

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a network node and via a buffer status report (BSR) or scheduling request (SR), a request indicating one or more parameters associated with sidelink communications in an unlicensed spectrum. The UE may receive, from the network node, a sidelink resource allocation indicating one or more resource block (RB) sets associated with the unlicensed spectrum. The UE may transmit, to a sidelink UE and based at least in part on the sidelink resource allocation and on a result of performing listen-before-talk (LBT), a sidelink communication. Numerous other aspects are described.

公开(公告)号：US20240057126A1

公开(公告)日：2024-02-15

申请号：US18448096

申请日：2023-08-10

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao LIU ,  Jae Ho RYU ,  Giovanni CHISCI ,  Hobin KIM ,  Jing SUN ,  Xiaoxia ZHANG

IPC: H04W72/25 ,  H04W74/08

CPC classification number: H04W72/25 ,  H04W74/0808

Abstract: A method for wireless communication at a first sidelink user equipment (UE) includes performing, in a shared radio frequency band, a listen-before-talk (LBT) for a channel occupancy time (COT). The method also includes selecting a full-slot sidelink channel waveform hypothesis associated with a first starting symbol, or a half-slot sidelink channel waveform hypothesis associated with a second starting symbol, in accordance with a timing associated with clearing the LBT. The method further includes transmitting, during the COT, sidelink information to a second sidelink UE, a transport block size (TBS) associated with the COT having a fixed number of resources, the fixed number of resources being a same number of resources for full-slot sidelink channel waveform hypothesis and the half-slot sidelink channel waveform hypothesis.