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公开(公告)号:US20180124789A1
公开(公告)日:2018-05-03
申请号:US15635000
申请日:2017-06-27
Applicant: QUALCOMM Incorporated
Inventor: Srinivas YERRAMALLI , Tamer KADOUS , Chih-Hao LIU , Chirag PATEL , Alberto RICO ALVARINO
CPC classification number: H04W72/0453 , H04B1/713 , H04L1/12 , H04L1/189 , H04L5/001 , H04L5/0023 , H04L5/0048 , H04L5/14 , H04L67/12 , H04W4/70 , H04W16/14 , H04W28/26 , H04W72/0413 , H04W72/042 , H04W72/0446 , H04W72/048 , H04W74/0808 , H04W88/02 , H04W88/08
Abstract: A method and apparatus for wireless communication in the unlicensed spectrum between an eNB and UEs having different bandwidths, e.g., between a narrowband UE and a wideband eNB. A base station apparatus may perform a dual CCA procedure for a frame, wherein the dual CCA procedure comprises a first type of CCA procedure followed by a second type of CCA procedure when the first type of CCA procedure is unsuccessful. The apparatus may transmit during the frame when at least one CCA procedure of the dual CCA procedure is successful and may refrain from transmitting during the frame when both CCA procedures of the dual CCA procedure are unsuccessful. In performing the dual CCA procedure, the apparatus may perform CCA for a first period of time then perform eCCA for a second period of time following the CCA, when the CCA is unsuccessful.
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公开(公告)号:US20180124770A1
公开(公告)日:2018-05-03
申请号:US15635051
申请日:2017-06-27
Applicant: QUALCOMM Incorporated
Inventor: Srinivas YERRAMALLI , Tamer KADOUS , Chih-Hao LIU , Chirag PATEL , Alberto RICO ALVARINO
Abstract: A method and apparatus for wireless communication in the unlicensed spectrum between an eNB and UEs having different bandwidths, e.g., between a narrowband UE and a wideband eNB. A base station apparatus performs an LBT procedure at a beginning of frames and transmits a plurality of repetitions of a transmission. When the plurality of repetitions span multiple frames and the LBT procedure is not successful for a first frame, the base station drops or postpones at least one repetition in the first frame until a second frame when the LBT procedure is successful. A UE receives the plurality of repetitions and may combine a plurality of repetitions across multiple frames. The UE may determine whether the base station drops the at least one repetition in the first frame or postpones the at least one repetition in the first frame until a second frame.
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公开(公告)号:US20250097861A1
公开(公告)日:2025-03-20
申请号:US18467573
申请日:2023-09-14
Applicant: QUALCOMM Incorporated
Inventor: Chih-Hao LIU , Jing SUN , Xiaoxia ZHANG , Qingjiang TIAN
Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may participate in sidelink communication using a sidelink slot structure that includes a set of periodic automatic gain control (AGC) candidate transmission time intervals (TTIs) that are common across a wireless network. The UE may monitor for a sidelink message during an interval in accordance with the set of common, periodic AGC TTIs, and the UE may transmit a sidelink feedback message in response to the sidelink message. The UE may transmit the sidelink feedback message over a set of resource blocks (RBs) of the sidelink slot structure if a format of the sidelink feedback message is associated with an uplink control channel format 0. Alternatively, the UE may transmit the sidelink feedback message over more than two symbols of the sidelink slot structure if the format is associated with an uplink control channel format 2.
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公开(公告)号:US20250056433A1
公开(公告)日:2025-02-13
申请号:US18447815
申请日:2023-08-10
Applicant: QUALCOMM Incorporated
Inventor: Chih-Hao LIU , Xiaoxia ZHANG , Jing SUN , Yisheng XUE , Giovanni CHISCI
IPC: H04W52/52 , H04W52/32 , H04W72/232 , H04W72/25
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment may receive a signal in an automatic gain control resource and may receive a physical sidelink feedback channel message based on a gain for reception of the first physical sidelink feedback channel message, where the gain is based on receiving the signal. In some aspects, the first physical sidelink feedback channel message may be one of a set of physical sidelink feedback channel messages time-division multiplexed over a set of contiguous time resources. Additionally, or alternatively, the user equipment may receive a sidelink message after receiving the physical sidelink feedback channel message using a second gain, where the second gain is based on receiving a second signal in a second automatic gain control resource that occurs before the first automatic gain control resource.
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公开(公告)号:US20240259962A1
公开(公告)日:2024-08-01
申请号:US18452982
申请日:2023-08-21
Applicant: QUALCOMM Incorporated
Inventor: Chih-Hao LIU , Jing SUN , Giovanni CHISCI , Xiaoxia ZHANG , Zhifei FAN
CPC classification number: H04W52/52 , H04W52/383 , H04W52/42
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter wireless communication device may transmit a plurality of automatic gain control (AGC) symbols associated with one or more sidelink communications. The transmitter wireless communication device may transmit the one or more sidelink communications after transmitting the plurality of AGC symbols. Numerous other aspects are described.
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公开(公告)号:US20240155676A1
公开(公告)日:2024-05-09
申请号:US18499161
申请日:2023-10-31
Applicant: QUALCOMM Incorporated
Inventor: Chih-Hao LIU , Jing SUN , Giovanni CHISCI , Stelios STEFANATOS , Xiaoxia ZHANG
IPC: H04W74/08
CPC classification number: H04W74/0808
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiving user equipment (UE) may receive, from a transmitting UE, a first communication associated with a channel occupancy time (COT) of the transmitting UE and at least one of a cast type or a channel type. The UE may transmit a second communication in the COT of the transmitting UE based at least in part on the cast type or the channel type of the first communication. Numerous other aspects are described.
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公开(公告)号:US20240072986A1
公开(公告)日:2024-02-29
申请号:US17823345
申请日:2022-08-30
Applicant: QUALCOMM Incorporated
Inventor: Yisheng XUE , Jing SUN , Chih-Hao LIU , Giovanni CHISCI , Xiaoxia ZHANG
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may transmit, to a set of second UEs, information indicating a duplexing pattern of the first UE, wherein the duplexing pattern indicates one or more reception intervals of the first UE and one or more transmission intervals of the first UE. The UE may communicate in accordance with the duplexing pattern. Numerous other aspects are described.
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公开(公告)号:US20230354304A1
公开(公告)日:2023-11-02
申请号:US18163959
申请日:2023-02-03
Applicant: QUALCOMM Incorporated
Inventor: Chih-Hao LIU , Giovanni CHISCI , Jing SUN , Yisheng XUE , Xiaoxia ZHANG
IPC: H04W72/1263 , H04L27/26
CPC classification number: H04W72/1263 , H04L27/2605
Abstract: A method of wireless communication performed by a first wireless communication device includes: receiving, in first sidelink (SL) resources of a shared frequency band comprising a first interlace of resource blocks (RBs) within one or more first RB-sets, a first SL communication in a first slot and a second SL communication in a second slot; and transmitting, in second SL resources of the shared frequency band comprising the one or more first RB-sets and a second interlace of RBs, a first SL feedback communication for the first SL communication and a second SL feedback communication for the second SL communication, wherein the transmitting the first SL feedback communication and the second SL feedback communication is based on a mapping of the first SL communication and the second SL communication to the second interlace of RBs in the one or more first RB-sets.
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公开(公告)号:US20230319873A1
公开(公告)日:2023-10-05
申请号:US17710642
申请日:2022-03-31
Applicant: QUALCOMM Incorporated
Inventor: Chih-Hao LIU , Yisheng XUE , Jing SUN , Xiaoxia ZHANG
CPC classification number: H04W74/0808 , H04W74/02
Abstract: Disclosed are techniques for performing wireless communication. In some aspects, a first user equipment (UE) may determine that one or more physical sidelink feedback channel (PSFCH) instances are scheduled during a channel occupancy time (COT) corresponding to a sidelink transmission by the first UE to a second UE. In some examples, the first UE may transmit a COT maintenance signal during the one or more PSFCH instances, wherein at least one PSFCH symbol in the COT maintenance signal has a cyclic prefix extension.
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公开(公告)号:US20230319745A1
公开(公告)日:2023-10-05
申请号:US17923760
申请日:2020-05-29
Applicant: QUALCOMM Incorporated
Inventor: Chih-Hao LIU , Jing SUN , Xiaoxia ZHANG , Yisheng XUE , Changlong XU , Ozcan OZTURK , Peter GAAL , Juan MONTOJO , Tao LUO
IPC: H04W56/00 , H04W72/1263 , H04W72/02 , H04W72/25 , H04L1/00
CPC classification number: H04W56/0015 , H04W72/1263 , H04W72/02 , H04W72/25 , H04L1/0038
Abstract: Wireless communications systems and methods related to multiplexing a sidelink-synchronization signal block (S-SSB) transmission with a physical sidelink control channel (PSCCH)/physical sidelink shared channel (PSSCH) transmission for occupancy channel bandwidth (OCB) fulfilment are provided. A user equipment (UE) determines a multiplex configuration for multiplexing a sidelink transmission with a S-SSB transmission in a sidelink bandwidth part (BWP). The UE communicates, in the sidelink BWP during a sidelink slot, the S-SSB transmission and the sidelink transmission are communicated by multiplexing the sidelink transmission and the S-SSB transmission based on the multiplex configuration.
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