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1.发明公开公开(公告)号：US20240155622A1
公开(公告)日：2024-05-09
申请号：US18053473
申请日：2022-11-08
发明人： Chih-Hao Liu , Xiaoxia Zhang , Jing Sun , Giovanni Chisci
CPC分类号： H04W72/14 , H04L1/1816 , H04L1/1848 , H04L1/1854 , H04W74/0808
摘要： Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive, while operating in a discontinuous reception mode, a grant scheduling a sidelink data message for the UE over a shared radio frequency spectrum band, the grant indicating a set of feedback channel occasions associated with the sidelink data message. The UE may transmit at least one feedback message indicating a feedback status of the sidelink data message during at least one feedback channel occasion of the set of feedback channel occasions. The UE may initiate, based at least in part on the at least one feedback channel occasion, a round-trip timer associated with the at least one feedback message during which the UE suppresses monitoring for a retransmission of the sidelink data message.
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公开(公告)号：US11974318B2
公开(公告)日：2024-04-30
申请号：US17249250
申请日：2021-02-24
发明人： Giovanni Chisci , Yisheng Xue , Jing Sun , Arumugam Chendamarai Kannan , Vinay Chande , Xiaoxia Zhang
IPC分类号： H04W74/02 , H04W16/14 , H04W72/0446
CPC分类号： H04W74/02 , H04W16/14 , H04W72/0446
摘要： Wireless communications systems and methods related to performing contention credit-based listen-before-talk (LBT) for communications over a shared radio frequency band (e.g., in a shared spectrum or in an unlicensed spectrum) are provided. A wireless communication device performs a first clear channel assessment (CCA) including a first countdown. The wireless communication device transmits, after a gap period from the first countdown, a first communication signal. The wireless communication device performs a second CCA including a second countdown. The wireless communication device transmits, beginning before an end of the second countdown, a second communication signal based on at least a first contention credit associated with the gap period.
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公开(公告)号：US20240064799A1
公开(公告)日：2024-02-22
申请号：US17889344
申请日：2022-08-16
发明人： Yisheng Xue , Jing Sun , Chih-Hao Liu , Xiaoxia Zhang , Giovanni Chisci
CPC分类号： H04W74/0808 , H04W16/14 , H04W72/0406 , H04W56/001
摘要： This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for sidelink control signaling using unlicensed spectrum. Wireless devices may perform a listen-before-talk (LBT) procedure before accessing a channel of the unlicensed spectrum, and may be unable to access the unlicensed spectrum in some circumstances. In some implementations, a wireless device may leverage resources available for transmitting a sidelink synchronization signal block (S-SSB) for additionally transmitting control signaling. For example, a wireless device may multiplex (such as frequency domain multiplexing) a control signal with a S-SSB, which may be transmitted in accordance with a relaxed LBT threshold. In some implementations, the control signal may include information such as an indication of LBT failure or an LBT status, or may be used to detect a radio link failure (RLF), or may be used the short control signal to synchronize sidelink clusters, among other examples.
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公开(公告)号：US11729726B2
公开(公告)日：2023-08-15
申请号：US17397741
申请日：2021-08-09
发明人： Vinay Chande , Arumugam Chendamarai Kannan , Srinivas Yerramalli , Giovanni Chisci , Xiaoxia Zhang , Jing Sun , Tao Luo
CPC分类号： H04W52/16 , H04W52/146 , H04W52/30
摘要： A configuration to configure an apparatus to perform a clear channel assessment based on one or more transmission power levels. The apparatus measures at least one energy sensing measurement over an operating channel. The apparatus determines whether the operating channel is available for transmission based on a threshold determination for one or more transmission power levels. The apparatus transmitting on the operating channel upon the determination that the operating channel is available for transmission for the one or more transmission power levels, wherein the one or more transmission power levels are less than the threshold determination.
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公开(公告)号：US20240349340A1
公开(公告)日：2024-10-17
申请号：US18577613
申请日：2021-09-22
发明人： Siyi Chen , Giovanni Chisci , Arumugam Chendamarai Kannan , Xiaoxia Zhang , Jing Sun , Rajat Prakash , Hao Xu , Changlong Xu , Luanxia Yang , Shaozhen Guo
IPC分类号： H04W74/0816 , H04L27/26 , H04W28/02 , H04W92/18
CPC分类号： H04W74/0816 , H04L27/2605 , H04W28/0278 , H04W92/18
摘要： This disclosure provides systems, methods, and devices for wireless communication that support mechanisms for sidelink channel occupancy time (COT) sharing request signaling in a wireless communication system. A sidelink transmitting user equipment (UE) transmits a COT sharing request to a sidelink initiator UE. The COT sharing request indicates to the initiator UE to initiate sharing of a COT acquired by the initiator UE with the transmitting UE. The initiator UE, in response to receiving the COT sharing request, determines to acquire the COT, and initiates COT sharing by transmitting, to the transmitting UE, COT sharing information including information to facilitate access to the COT by the transmitting UE. The transmitting UE, based on the COT sharing information received from the initiator UE, access the sidelink channel during the COT and transmits data over the sidelink channel.
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6.发明公开公开(公告)号：US20240114502A1
公开(公告)日：2024-04-04
申请号：US17951539
申请日：2022-09-23
发明人： Chih-Hao Liu , Jing Sun , Xiaoxia Zhang , Yisheng Xue , Giovanni Chisci
IPC分类号： H04W72/12
CPC分类号： H04W72/121
摘要： Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may receive an inter-UE coordination request message from a second UE, the inter-UE coordination request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The first UE may transmit an inter-UE coordination response message comprising the scheduling information to the second UE, the scheduling information comprising an indication of one or more of a resource block set and interlacing pattern frequency configuration for multi-slot burst communications between the first UE and the second UE or a starting slot and slot burst length configuration for the multi-slot burst communications between the first UE and the second UE.
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公开(公告)号：US11576201B2
公开(公告)日：2023-02-07
申请号：US17116986
申请日：2020-12-09
IPC分类号： H04W72/14 , H04W72/1268 , H04W16/14 , H04W72/12
摘要： Methods, systems, and devices for wireless communications are described. A base station may transmit control signaling including a candidate uplink grant configuration to a user equipment (UE). The candidate uplink grant configuration may include an indication of multiple candidate uplink grants for an uplink grant, each candidate uplink grant indicating one or more resource block sets configured for a channel access procedure. The UE may select a candidate uplink grant for transmitting the uplink transmission based on an availability of one or more resource block sets of the selected candidate uplink grant. For example, the UE may perform a channel access procedure for the resource block sets indicated by the candidate uplink grants to determine the availability of each candidate uplink grant. The UE may transmit an uplink transmission to the base station using the one or more resource block sets indicated by the selected candidate uplink grant.
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公开(公告)号：US20220272750A1
公开(公告)日：2022-08-25
申请号：US17249250
申请日：2021-02-24
发明人： Giovanni Chisci , Yisheng Xue , Jing Sun , Arumugam Chendamarai Kannan , Vinay Chande , Xiaoxia Zhang
摘要： Wireless communications systems and methods related to performing contention credit-based listen-before-talk (LBT) for communications over a shared radio frequency band (e.g., in a shared spectrum or in an unlicensed spectrum) are provided. A wireless communication device performs a first clear channel assessment (CCA) including a first countdown. The wireless communication device transmits, after a gap period from the first countdown, a first communication signal. The wireless communication device performs a second CCA including a second countdown. The wireless communication device transmits, beginning before an end of the second countdown, a second communication signal based on at least a first contention credit associated with the gap period.
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公开(公告)号：US20220095373A1
公开(公告)日：2022-03-24
申请号：US17305829
申请日：2021-07-15
摘要： A method of wireless communication includes receiving, by a user equipment (UE) from a base station, a control message associated with a plurality of listen before talk (LBT) threshold values including a first LBT threshold value and a second LBT threshold value. The first LBT threshold value is associated with a first frequency spectrum, and the second LBT threshold value is associated with a second frequency spectrum different than the first frequency spectrum. The method further includes performing an LBT operation based on the first LBT threshold value and the second LBT threshold value. The method further includes, based on the LBT operation, performing a transmission by the UE using one or both of the first frequency spectrum or the second frequency spectrum.
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公开(公告)号：US20210298074A1
公开(公告)日：2021-09-23
申请号：US17249732
申请日：2021-03-10
发明人： Sungwoo Park , Arumugam Chendamarai Kannan , Srinivas Yerramalli , Xiaoxia Zhang , Jing Sun , Vinay Chande , Tao Luo , Aleksandar Damnjanovic , Giovanni Chisci
IPC分类号： H04W74/08 , H04B17/336
摘要： Wireless communications systems and methods related to communications in a network are provided. A first wireless communication device may communicate to a second wireless communication device, a modification to a time parameter associated with at least one of a minimum idle period (MIP) of a frame period or a maximum channel occupancy time (MCOT) of the frame period. Additionally, the first wireless communication device may communicate with the second wireless communication device, a communication signal during the frame period based on the modification to the time parameter.
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