公开(公告)号：US20220131725A1

公开(公告)日：2022-04-28

申请号：US17427498

申请日：2020-02-13

Applicant: Apple Inc.

Inventor： Yingyang LI ,  Salvatore TALARICO ,  Yongjun KWAK

IPC: H04L27/00 ,  H04L5/00 ,  H04L5/14 ,  H04W74/08

Abstract: Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for generating and using slot format indicator (SFI) and channel occupancy time (COT) structure in new radio (NR) systems operating on unlicensed spectrum. For example, some embodiments are directed to a base station that includes radio front end circuitry and processor circuitry. The processor circuitry can be configured to generate a slot format indicator (SFI) associated with a channel occupancy time (COT) structure. The SFI indicates whether one or more slots associated with the COT structure are to be used for downlink (DL) symbols, uplink (UL) symbols, or flexible symbols. The flexible symbols form one or more gaps in the COT structure in response to the flexible symbols not being overridden as a DL transmission or a UL transmission. The processor circuitry can further be configured to transmit the SFI to a user equipment (UE).

公开(公告)号：US20220086824A1

公开(公告)日：2022-03-17

申请号：US17414486

申请日：2020-01-09

Applicant: Apple Inc.

Inventor： Lopamudra KUNDU ,  Gang XIONG ,  Yongjun KWAK ,  Yingyang LI

IPC: H04W72/04 ,  H04L1/18 ,  H04B1/713

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for use in a wireless network for resource allocation during initial access. Some embodiments are directed to an apparatus including processor circuitry and radio front circuitry. The processor circuitry can be configured to determine, in accordance with a predetermined requirement, multiple physical resource blocks (PRBs) to be used for transmitting a physical uplink control channel (PUCCH) before a dedicated PUCCH resource configuration. The radio front end circuitry coupled with the processor circuitry can be configured to transmit the PUCCH using the determined PRBs and before the dedicated PUCCH resource configuration. The dedicated PUCCH resource configuration can include initial access before Radio Resource Control (RRC) connection setup.

公开(公告)号：US20210298075A1

公开(公告)日：2021-09-23

申请号：US17257716

申请日：2019-08-07

Applicant: Apple Inc.

Inventor： Salvatore TALARICO ,  Jeongho JEON ,  Gang XIONG ,  Yingyang LI ,  Carlos ALDANA

IPC: H04W74/08 ,  H04W16/14 ,  H04L1/18 ,  H04W72/04

Abstract: Systems and methods of adjusting contention window size (CWS) in a LBT procedure for both UL and DL unlicensed spectrum transmissions are described. The UE makes a HARQ-ACK determination for at least one code block group (CBG) of a transport block (TB) in a reference burst from a base station, determines whether the HARQ-ACK determination for the CBG meets a predetermined number of NACKs, transmits to the base station a single bit HARQ-ACK feedback for the TB that is dependent on whether the predetermined number of NACKs has been met, and receives or determines the adjusted CWS and uses the adjusted CWS for communication with the base station.

公开(公告)号：US20250062939A1

公开(公告)日：2025-02-20

申请号：US18935110

申请日：2024-11-01

Applicant: Apple Inc.

Inventor： Yingyang LI ,  Salvatore TALARICO ,  Yongjun KWAK

IPC: H04L27/00 ,  H04L5/00 ,  H04L5/14 ,  H04W16/14 ,  H04W74/0816

Abstract: Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for generating and using slot format indicator (SFI) and channel occupancy time (COT) structure in new radio (NR) systems operating on unlicensed spectrum. For example, some embodiments are directed to a base station that includes radio front end circuitry and processor circuitry. The processor circuitry can be configured to generate a slot format indicator (SFI) associated with a channel occupancy time (COT) structure. The SFI indicates whether one or more slots associated with the COT structure are to be used for downlink (DL) symbols, uplink (UL) symbols, or flexible symbols. The flexible symbols form one or more gaps in the COT structure in response to the flexible symbols not being overridden as a DL transmission or a UL transmission. The processor circuitry can further be configured to transmit the SFI to a user equipment (UE).

公开(公告)号：US20220104259A1

公开(公告)日：2022-03-31

申请号：US17429605

申请日：2020-02-13

Applicant: Apple Inc.

Inventor： Yingyang LI ,  Salvatore TALARICO ,  Yongjun KWAK ,  Jose Armando OVIEDO

IPC: H04W74/08 ,  H04W72/04 ,  H04W74/00

Abstract: Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for grant based Physical Uplink Shared Channel (PUSCH) transmission and configured grant based PUSCH transmission in new radio systems operating in an unlicensed spectrum. Some embodiments are directed to a user equipment (UE) that includes processor circuitry and radio circuitry. The processor circuitry can be configured to receive using the radio circuitry, configuration data from a source device associated with a source cell, and determine based on the configuration data, a starting position and ending position for transmitting data in multiple slots in a PUSCH within a shared channel occupancy time (COT), where the starting position depends on a listen before talk (LBT) outcome. The processor circuitry can perform the LBT, and transmit using the radio circuitry, the data at the starting position in an available slot of the COT.

公开(公告)号：US20220095301A1

公开(公告)日：2022-03-24

申请号：US17422146

申请日：2020-01-10

Applicant: Apple Inc.

Inventor： Jose Armando OVIEDO ,  Yingyang LI ,  Salvatore TALARICO ,  Yongjun KWAK

IPC: H04W72/04 ,  H04W16/14 ,  H04W74/08

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for a wireless communication system in an unlicensed spectrum. A user equipment (UE) device of the wireless communication system includes a processor circuitry and radio front end circuitry. The processor circuitry is configured to acquire a channel occupancy time (COT) in the unlicensed spectrum, and determine a number of remaining consecutive subframes allocated for physical uplink shared channel (PUSCH) transmission to a base station. The processor circuitry is configured to generate uplink control information (UCI) to indicate a COT sharing boundary occurring at an end of the remaining consecutive subframes. The radio front end circuitry is coupled to the processor circuitry and configured to transmit the UCI in the PUSCH) transmission during one of the remaining consecutive subframes. The processor circuitry is also configured to monitor downlink transmissions from the base station following the COT sharing boundary.

公开(公告)号：US20220086907A1

公开(公告)日：2022-03-17

申请号：US17420090

申请日：2020-02-16

Applicant: Apple Inc.

Inventor： Lopamudra KUNDU ,  Bishwarup MONDAL ,  Yongjun KWAK ,  Yingyang LI

IPC: H04W74/08 ,  H04L1/00 ,  H04L1/16 ,  H04L27/26

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for an access point (AP) for a wireless communication system operating in a licensed and an unlicensed spectrum. The AP includes processor circuitry configured to determine a plurality of interleaved interlaces based on a bandwidth of a physical uplink channel and a subcarrier spacing (SCS). The processor circuitry is configured to identify a plurality of resource blocks (RBs) corresponding to a first interleaved interlace of the plurality of interleaved interlaces, which are based on a number of subcarrier per RB. The processor circuitry is configured to allocate the plurality of RBs corresponding to the first interleaved interlace among one or more user equipments (UEs), and generate an indication of the allocated plurality of RBs, the first interleaved interlace, and the one or more UEs to transmit to the one or more UEs via radio front end circuitry coupled to the processor circuitry.

公开(公告)号：US20220070922A1

公开(公告)日：2022-03-03

申请号：US17420089

申请日：2020-02-10

Applicant: Apple Inc.

Inventor： Salvatore TALARICO ,  Jose Armando OVIEDO ,  Yingyang LI ,  Yongjun KWAK ,  Carlos H. ALDANA

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

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for a user equipment (UE) for a wireless communication system operating in a licensed spectrum and an unlicensed spectrum. The UE performs a listen before transmission (LBT) procedure to acquire a channel for an uplink (UL) transmission upon determination that a first LBT priority class of a first order of UL transmission is not less than a second LBT priority class of a second order of UL transmission, and a maximum channel occupancy time (MCOT) corresponding to the first order of UL transmission is at least a total length of the UL transmission comprising a first length of the first order of uplink (UL) transmission and a second length of the second order of UL transmission. In response to acquiring the channel, the UE performs the first order of UL transmission, followed by the second order of UL transmission.