Qualcomm Incorporated

Yisheng Xue

Xiaoxia Zhang

Jing X Sun

Chih-Hao Liu

Tao Luo

Aleksandar Damnjanovic

Yongbin Wei

Ozcan Ozturk

Piyush Gupta

Peter S Gaal

Juan Montojo

Sony Akkarakaran

Junyi Li

Tamer Adel Kadous

Xiaojie Wang

Rajat Prakash

Seyed Ali Akbar Fakoorian

Shuanshuan Wu

Lik Hang Silas Fong

Giovanni Chisci

Arumugam Chendamarai Kannan

Siddhartha Mallik

Weiliang Zeng

Hua Wang

Mostafa Khoshnevisan

Ahmed Kamel Sadek

Changlong Xu

Yi Huang

Taesang Yoo

Linhai He

Wanshi Chen

Jing Lei

Maarten Menzo Wentink

Michael Mingxi Fan

Iyab Issam Sakhnini

Seyong Park

Sungwoo Park

Arthur Gubeskys

Jiye Liang

Jung Ho Ryu

Gabi Sarkis

Tien Viet Nguyen

Mingxi Fan

Qingsi Wang

Tingfang Ji

Seyedkianoush Hosseini

Joseph Binamira Soriaga

Wei Jennifer Yang

Qing Li

Ahmed Elshafie

Vinay Chande

Jian Li

Marco Papaleo

Morteza Soltani

Enoch Shiao-Kuang Lu

Sanaz Barghi

Yin Huang

Karoly Becze

Yan Zhou

Kapil Gulati

Wooseok Nam

Krishna Kiran Mukkavilli

Jelena Damnjanovic

George Cherian

Shailesh Patil

Shimman Arvind Patel

Olufunmilola Omolade Awoniyi-Oteri

Qingjiang Tian

Pouriya Sadeghi

Haitao Zhang

Ruiming Zheng

Supratik Bhattacharjee

Lorenzo Ferrari

Jae Ho Ryu

Peter Gaal

Jing Sun

Hai Jiang

Sam Liu

Wireless communications systems and methods related to communicating control information are provided. A method of wireless communication performed by a sidelink user equipment (UE) may include receiving, from a base station (BS), a configuration indicating a listen-before-talk (LBT) window, wherein the configuration indicates a start and an end associated with the LBT window, performing, during the LBT window, an LBT for a channel occupancy time (COT) in a shared radio frequency band, and transmitting, to another sidelink UE, based on the LBT being successful, one or more transport blocks (TBs) during the COT.

Channel occupancy time contention grant for sidelink communications

This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for distance-based channel occupancy time (COT) sharing. In one aspect, a first device, such as a user equipment (UE), may determine an approximate distance between itself and a second device. The first device may receive a COT sharing configuration including a set of COT sharing parameters for sharing a COT of the communications link with the second device based on the distance between the two devices. The first device may determine conditions for sharing the COT based on the COT sharing configuration and the approximate distance between the two devices. Additionally, or alternatively, the first device may determine conditions for sharing the COT based on the COT sharing configuration and a power metric of communications between the two devices.

Distance-based channel occupancy time (COT) sharing

Aspects of the disclosure relate to a user equipment (UE) for establishing a sidelink communication channel and receive mapped channel state information-reference signals (CSI-RS) over a plurality of PSSCH resource blocks. The mapped CSI-RS may be interlaced with resource elements in at least a portion of the plurality of PSSCH resource blocks. The CSI-RS received over the plurality of PSSCH blocks is then processed to determine a channel quality of the sidelink channel from the portion of the plurality of PSSCH resource blocks including the mapped CSI-RS.

Interlaced sidelink data for communication

Methods, systems, and devices for wireless communication are described. In some cases, a first user equipment (UE) may perform a listen-before-talk (LBT) procedure to identify a channel occupancy time (COT). The COT may include some slots for transmitting a sidelink message and some sidelink synchronization signal block (S-SSB) slots for transmitting S-SSBs. In some examples, to fill a gap created by the S-SSB slots within the COT and thus maintain the COT across the S-SSB slots, the first UE or the second UE may transmit some signaling to provide transmissions in the S-SSB slots. For example, the first UE may transmit a padding signal, the second UE may transmit S-SSBs, or the UEs may use a gap control procedure. Upon filling the gap, the first UE may transmit a sidelink message to the second UE in slots of the COT excluding the S-SSB slots.

Maintaining channel occupancy time across sidelink synchronization signal block slots in unlicensed sidelink

A method of wireless communication performed by a first wireless communication device may maintain a channel occupancy time (COT) in a shared frequency band during at least one physical sidelink feedback channel (PSFCH) instance. In some aspects, the method includes transmitting, in a first portion of a COT based on a listen-before talk (LBT), a first sidelink (SL) communication comprising SL communication information (SCI), the SCI indicating a second wireless communication device to transmit a signal in at least one gap symbol preceding a PSFCH resource. The method further includes receiving, from the second wireless communication device, the signal during the at least one gap symbol. The method further includes transmitting, in a second portion of the COT based on the LBT, a second SL communication, wherein the second portion of the COT is subsequent to the PSFCH resource.

Channel occupancy time (COT) maintenance for sidelink communications in unlicensed bands

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a network entity via an optical wireless communication link, a first optical wireless signal using photodetectors positioned on a photodetector panel of the UE. The photodetector panel may include a hole around which the photodetectors are positioned and may be located a first distance from a curved optical device of the UE via which the first optical wireless signal is received. The UE may transmit, to the network entity via the optical wireless communication link, a second optical wireless signal using a light source of the UE that is located a second distance from the curved optical device via which the second optical wireless signal is transmitted. The second optical wireless signal may pass through the hole in the photodetector panel based on the second distance being greater than the first distance.

Coaxial optical front end for optical wireless communication

Wireless communications systems, apparatuses, and methods are provided. A method of wireless communication performed by a first sidelink user equipment (UE) may include transmitting, to a second sidelink UE, a configuration indicating at least one of a length associated with a sidelink synchronization signal block (S-SSB) burst, a quasi-colocation (QCL) index associated with the S-SSB burst, or a first QCL order associated with the S-SSB burst and transmitting, to the second sidelink UE, the S-SSB burst based on the at least one of the length associated with the S-SSB burst, the QCL index associated with the S-SSB burst, or the first QCL order associated with the S-SSB burst.

Dynamic synchronization signal blocks for sidelink communication

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.

Inter-user equipment (UE) coordination for sidelink in an unlicensed or shared spectrum

Wireless communications systems and methods related to communicating control information are provided. A method of wireless communication performed by a user equipment (UE) may include performing a clear channel assessment (CCA), transmitting, to a first UE based on the CCA being successful, a first transport block (TB) via a first sub-PSSCH associated with a first sub-slot, and transmitting, to at least one of the first UE or a second UE, a second TB via a PSSCH associated with a slot.

Multi-transmitter scheduling using slot-based and sub-slot based physical sidelink shared channels

Aspects described herein relate to sidelink transmissions. In an example, a first user equipment (UE) may receive, from a network entity, a first sidelink grant for a transmission between the first UE and a second UE; communicate the transmission according to the first sidelink grant to the second UE; determine initiation of a sidelink round trip timer subsequent to communicating the transmission to the second UE; and initiate an inactive mode for the first UE based on a second grant not being received from the network entity before completion of a duration of a sidelink retransmission timer that was initiated upon completion of a duration of the sidelink round trip timer, the first UE being configured out of an ON duration of a discontinuous reception (DRX) cycle, and an inactivity timer expiring before completion of the duration of the sidelink retransmission timer.

Scheduling operation with mode-1 scheduling in sidelink and sidelink unlicensed operations

This disclosure provides systems, methods and apparatus for partitioning a physical sidelink shared channel (PSSCH) into multiple shortened PSSCHs (sPSSCHs) within a slot and selecting a transmit power for each sPSSCH. In one aspect, a transmitting user equipment (UE) may select the transmit power for each sPSSCH in accordance with an open loop power control operation. In some examples, the transmitting UE may select a common transmit power for each sPSSCH. Alternatively, the transmitting UE may perform independent power control operations for each sPSSCH and may cap variation in transmit power across sPSSCHs as a result of employing lower and upper bound transmit powers. Additionally, or alternatively, the transmitting UE may provide a default beta offset for the set of receiving UEs via sidelink control information (SCI) part one (SCI-1) and may provide beta offset updates via each SCI part two (SCI-2) transmission in the multiple sPSSCHs.

Techniques for sidelink power control and beta offset updates over shortened physical sidelink shared channel-based mini-slots

Methods, systems, and devices for wireless communication are described. Some wireless communications systems may support a slot transmission detection procedure for sidelink communications. A sidelink user equipment may monitor, during a slot and within one or more subbands, for signaling associated with a first sidelink transmission that corresponds to resources that span a duration of the slot. The signaling may include sidelink control information, a demodulation reference signal, or other sidelink signaling associated with the first sidelink transmission. The user equipment may determine a signal strength or one or more other parameters associated with the signaling. The user equipment may determine whether to transmit a second sidelink transmission having a duration that is less than a first duration of the first sidelink transmission based on the signal strength, the one or more parameters, or both associated with the signaling.

Full-slot transmission detection for sidelink communications

Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may determine that that the first UE is scheduled to transmit a control signal and a synchronization signal associated with a synchronization signal block. The first UE may transmit, to a second UE during a first set of symbols within a time period, the control signal associated with a sidelink communication. In some examples, the first UE may transmit, to the second UE during a symbol subsequent to the first set of symbols, the synchronization signal associated with the synchronization signal block, and may communicate with the second UE according to the transmitted control signal and the transmitted synchronization signal.

Techniques for synchronization signal block waveform design for sidelink communications

Wireless communications systems and methods related to communicating control information are provided. A method of wireless communication performed by a first sidelink user equipment (UE) may include receiving, from a base station (BS), an indicator associated with occupancy of a channel-access gap symbol and transmitting, to a second sidelink UE, a first physical sidelink shared channel (PSSCH) communication via the channel-access gap symbol based on the indicator associated with the occupancy of the channel-access gap symbol.

Continuous transmission grants in sidelink communication networks

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may determine, within a channel occupancy time shared with a second UE, one or more contention slot starting times based at least in part on a listen before talk duration and an automatic gain control duration. The first UE may transmit a sidelink communication to the second UE at a starting time selected from one or more of the one or more contention slot starting times. Numerous other aspects are provided.

Techniques for UE-to-UE channel occupancy time sharing in unlicensed spectrum

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San Diego, CA, United States of America

Yisheng Xue