公开(公告)号：US20180139618A1

公开(公告)日：2018-05-17

申请号：US15812810

申请日：2017-11-14

Applicant: QUALCOMM Incorporated

Inventor： Srinivas YERRAMALLI ,  Tamer KADOUS ,  Chirag Sureshbhai PATEL ,  Chih-Hao LIU ,  Alberto RICO ALVARINO

IPC: H04W16/14 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12

CPC classification number: H04W16/14 ,  H04B1/713 ,  H04J2011/0016 ,  H04L1/1671 ,  H04L1/1812 ,  H04L1/1896 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0055 ,  H04L5/0057 ,  H04L27/0006 ,  H04L27/2602 ,  H04W72/042 ,  H04W72/1215 ,  H04W72/14 ,  H04W74/0808

Abstract: Certain aspects of the present disclosure provide techniques for transmitting and receiving self-contained transmissions for enhanced machine type communications (eMTC) in unlicensed spectrum (eMTC-U). An exemplary method includes a BS determining, based on a listen before talk (LBT) procedure, that a first portion of unlicensed radio frequency spectrum is available for a frame, transmitting, on the first portion of the unlicensed radio frequency spectrum, a control channel indicating a frame format of the frame or a grant of the first portion of the unlicensed radio frequency spectrum for the frame, and communicating with a user equipment (UE) according to the frame format or the grant during the frame.

公开(公告)号：US20250113376A1

公开(公告)日：2025-04-03

申请号：US18801041

申请日：2024-08-12

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/02 ,  H04W74/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a consistent listen-before-talk (LBT) failure indication that includes a bitmap, wherein a bit in the bitmap corresponds to a resource block (RB) set, and the bit indicates whether the RB set is associated with consistent LBT failure. The UE may perform a sidelink communication based at least in part on scheduling, wherein the scheduling is based at least in part on the consistent LBT failure indication. Numerous other aspects are described.

公开(公告)号：US20250106871A1

公开(公告)日：2025-03-27

申请号：US18830216

申请日：2024-09-10

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/25 ,  H04W72/0453

Abstract: Devices, systems, and methods for configuring and indicating sidelink resources for shared or unlicensed frequency bands include configuring PSFCH resource sets using frequency interlaces of one or more PRBs. A first wireless communication device may transmit a plurality of sidelink PRB bitmaps, each associated with a PSFCH occasion or candidate. Each bit in the bitmap may indicate one PRB in the configured resource pool. The PSFCH resource sets may be partitioned by indexing the PRBs according to an interlace-first indexing sequence, and selecting contiguous subsets of indices to form the PSFCH resource sets.

公开(公告)号：US20250097865A1

公开(公告)日：2025-03-20

申请号：US18468026

申请日：2023-09-15

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao LIU ,  Jing SUN

IPC: H04W56/00 ,  H04W76/10

Abstract: A method for wireless communication at a relay user equipment (UE) includes receiving, from a network node, a first message indicating one or more parameters associated with a relay synchronization signal block (SSB). The method also includes receiving, from the network node, a second message instructing the relay UE to transmit the relay SSB in accordance with the one or more parameters. The method further includes transmitting, to one or more out-of-coverage (OOC) sidelink (SL) UEs via an SL channel, a third message including the relay SSB in accordance with receiving the second message.

公开(公告)号：US20250056602A1

公开(公告)日：2025-02-13

申请号：US18745123

申请日：2024-06-17

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/0808 ,  H04W92/18

Abstract: Methods, systems, and devices for wireless communication are described. A non-sidelink synchronization signal (SLSS)-transmitting user equipment (UE) may initiate a channel occupancy time (COT) including multiple contiguous slots and a gap slot. The non-SLSS UE may detect an SLSS UE (capable of transmitting sidelink synchronization signal blocks (S-SSBs)) and assume that the gap slot will be filled with an S-SSB. The non-SLSS may transmit a sidelink message during the COT after the gap slot, based on the assumption. Alternatively, based on the SLSS UE indicating that it is capable of transmitting the S-SSB, the non-SLSS UE may schedule transmission of the S-SSB such that the gap slot is filled. If the SLSS UE is incapable of transmitting the S-SSB, the non-SLSS UE may determine a method for transmitting the sidelink message during the already-initiated COT or during another COT.

公开(公告)号：US20250056432A1

公开(公告)日：2025-02-13

申请号：US18446695

申请日：2023-08-09

Applicant: QUALCOMM Incorporated

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

IPC: H04W52/50 ,  H04L5/00 ,  H04W72/232

Abstract: Wireless communications systems and methods related to sidelink communication between user equipments (UEs). A first UE determines a power level for a physical sidelink format indicator channel (PSFCH) with multiple interlaced resource blocks (RBs) and/or a common interlace. If a reference power level is provided by a network device such as a base station, the UE may determine power levels based on the reference power level. The UE may also determine power levels based on maximum supported power levels for the UE. In some embodiments, a common interlace uses a fixed percentage of maximum UE power. In other embodiments, available transmit power is evenly split between PSFCH RBs and a common interlace. Priority PSFCH dropping rules may be implemented when scheduled PSFCHs exceed power limitations.

公开(公告)号：US20250039909A1

公开(公告)日：2025-01-30

申请号：US18361484

申请日：2023-07-28

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/40 ,  H04L1/1607

Abstract: Various aspects of the present disclosure generally relate to wireless communication. Some aspects more specifically relate to sidelink communications and PSFCH padding. In some aspects, a channel occupancy time (COT) initiating UE may obtain physical sidelink feedback channel (PSFCH) information indicating that a PSFCH transmission is to occupy a common interlace and one or more physical resource blocks. The COT initiating UE may communicate a padding signal within a PSFCH gap of the common interlace in accordance with identifying that the COT initiating UE and the responding UE are not to transmit hybrid automatic repeat request (HARQ) feedback within the PSFCH gap of the common interlace. In some other aspects, the PSFCH information may indicate that the PSFCH transmission is to occupy a dedicated interlace, and the COT initiating UE may communicate a padding signal on a PSFCH resource within the dedicated interlace.

公开(公告)号：US20250016762A1

公开(公告)日：2025-01-09

申请号：US18347466

申请日：2023-07-05

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04W72/40

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may receive scheduling information for the first UE using Layer 1 (L1) signaling, the scheduling information including a first target and a first granted resource for the first UE. The UE may transmit or receive a communication on a sidelink using L1 signaling based at least in part on the scheduling information. Numerous other aspects are described.

公开(公告)号：US20240414740A1

公开(公告)日：2024-12-12

申请号：US18715575

申请日：2022-02-18

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/25 ,  H04L1/06

Abstract: Some aspects described herein relate to receiving, from a sidelink transmitting user equipment (UE), one or more first transmissions over a first set of sidelink resources, receiving, from the sidelink transmitting UE, one or more second transmissions over a second set of sidelink resources, and transmitting, to the sidelink transmitting UE, second feedback for the one or more second transmissions in a second set of feedback resources, wherein the second feedback also includes, based on a failure associated with first feedback for the one or more first transmissions to be transmitted over a first set of feedback resources, a retransmission of at least a portion of the first feedback. Other aspects relate to receiving the second feedback with the retransmission of at least the portion of first feedback.

公开(公告)号：US20240381391A1

公开(公告)日：2024-11-14

申请号：US18316839

申请日：2023-05-12

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/40 ,  H04W72/0453

Abstract: A method of wireless communication performed by a first user equipment (UE) comprises transmitting, in a first channel occupancy time (COT), a first sidelink (SL) data communication in a first RB-set to a second UE, and a second SL data communication in a second RB-set to a third UE. The method further includes receiving, from the second UE in the first COT: a first SL feedback communication in the first RB-set; and a repetition of the first SL feedback communication in the second RB-set. The method further includes transmitting, to the second UE in the first COT after the receiving the first SL feedback communication, a third SL data communication in the first RB-set, and transmitting, to the third UE in the first COT after receiving the repetition of the first SL feedback communication, a fourth SL data communication in the second RB-set.