公开(公告)号：US20220183064A1

公开(公告)日：2022-06-09

申请号：US17441565

申请日：2020-03-27

Applicant: Apple Inc.

Inventor： Salvatore TALARICO ,  Yongjun KWAK ,  Carlos H. ALDANA

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/12

Abstract: Systems, methods, and apparatuses disclosed herein can operate on an unlicensed spectrum. These systems, methods, and apparatuses can perform a Clear Channel Assessment (CCA) to detect transmissions within the unlicensed spectrum. Thereafter, these systems, methods, and apparatuses can transmit, in response to the unlicensed spectrum being clear of transmissions, one or more first symbols within an uplink (UL) burst portion of a frame structure. The frame structure can include a downlink (DL) burst portion and the UL burst portion separated by gap. These systems, methods, and apparatuses can receive one or more second symbols within the DL burst portion.

公开(公告)号：US20220070910A1

公开(公告)日：2022-03-03

申请号：US17420575

申请日：2020-01-11

Applicant: Apple Inc.

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

IPC: H04W72/12 ,  H04L1/16 ,  H04L1/18 ,  H04W72/14

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for a wireless communication on an unlicensed spectrum. An access point (AP) of the wireless communication system includes a processor circuitry, and radio front end circuitry coupled to the processor circuitry. The processor circuitry is configured to schedule multiple transmission time intervals (multi-TTIs) in a physical uplink shared channel (PUSCH) in the unlicensed spectrum. The processor circuitry is configured to generate a downlink control information (DCI) to include the scheduled multi-TTIs and a hybrid automatic repeat and request acknowledgement (HARQACK) assessment information associated with the scheduled multi-TTIs. The radio front end circuitry is configured to transmit the DCI to a user equipment (UE) over the unlicensed spectrum.

公开(公告)号：US20210328738A1

公开(公告)日：2021-10-21

申请号：US17259102

申请日：2019-08-09

Applicant: Apple Inc.

Inventor： Bishwarup MONDAL ,  Salvatore TALARICO ,  Seau S. LIM ,  Dae Won LEE ,  Jeongho JEON

IPC: H04L5/00 ,  H04W72/12

Abstract: An apparatus of a network (NW) configured to: encode a new radio (NR) Discovery Reference Signal (DRS) transmission, the NR DRS transmission including a synchronization signal block (SSB) and channel state information (CSI) reference signal (RS) (CSI-RS). The apparatus is further configured to configure the NW to transmit the NR DRS transmission. The RS-CSI may be a fragmented RS-CSI including a first fragmented portion and a second fragmented portion, where the apparatus is configured to encode a symbol of the NR DRS transmission to comprise the first fragmented portion, a symbol of the SSB, and the second fragmented portion, where the symbol of the SSB is encoded on a physical broadcast channel (PBCH) portion of the NR DRS transmission.

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：US20230023399A1

公开(公告)日：2023-01-26

申请号：US17947390

申请日：2022-09-19

Applicant: Apple Inc.

Inventor： Salvatore TALARICO ,  Huaning NIU ,  Wenting CHANG

IPC: H04B7/06 ,  H04B1/713 ,  H04L5/00 ,  H04W24/10 ,  H04L27/00 ,  H04W16/14

Abstract: Techniques described herein can facilitate Channel-State Information (CSI) measurement and feedback for communication in unlicensed spectrum or Sounding Reference Signal (SRS) transmission and/or channel-state estimation for communication in unlicensed spectrum. In an example, an apparatus is configured to be employed in a User Equipment (UE), and the apparatus comprises a Radio Frequency (RF) circuitry interface and processing circuitry configured to perform CSI measurement for communication in unlicensed spectrum. The apparatus further generates data for feedback according to the CSI measurement, and sends the data for feedback to RF circuitry via the RF circuitry interface. In an example, a frame structure of a data channel begins with a downlink (DL) transmission or soon after an initial signal. In an example, the CSI measurement includes measuring Channel Quality Information (CQI) for one or more sub-bands.

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：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.

公开(公告)号：US20220312481A1

公开(公告)日：2022-09-29

申请号：US17419678

申请日：2020-01-09

Applicant: Apple Inc.

Inventor： Salvatore TALARICO ,  Gang XIONG ,  Yingyang LI ,  Carlos H. ALDANA

IPC: H04W74/08 ,  H04W72/04 ,  H04L1/18 ,  H04L5/00

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for wireless communication using an unlicensed spectrum. An access point (AP) operating in the unlicensed spectrum includes a processor circuitry, a transmitter, and a receiver. The processor circuitry is configured to perform a listen before talk (LBT) procedure using an LBT parameter and a maximum channel occupancy time (MCOT) that is compatible with another wireless protocol using the unlicensed spectrum. The processor circuitry is configured to divide a transport block (TB) into a plurality of code block groups (CBGs) for transmission over the unlicensed spectrum. The transmitter is configured to transmit the plurality of CBGs to a destination, and a receiver is configured to receive hybrid automatic repeat and request acknowledgment (HARQ-ACK) information corresponding to the transmitted plurality of CBGs. The processor circuitry is further configured to determine a HARQ-ACK assessment for the TB based on the HARQ-ACK information corresponding to the transmitted plurality of CBGs, and adjust a contention window size based on the HARQ-ACK assessment for the TB.

公开(公告)号：US20220167408A1

公开(公告)日：2022-05-26

申请号：US17440673

申请日：2020-11-05

Applicant: Apple Inc.

Inventor： Anthony LEE ,  Seau S. LIM ,  Youn Hyoung HEO ,  Salvatore TALARICO ,  Yongjun KWAK ,  Bishwarup MONDAL ,  Carlos H. ALDANA

IPC: H04W74/08 ,  H04W72/04 ,  H04W76/19

Abstract: Techniques are provided for determining and processing uplink listen before talk (LBT) failures, including the determination of a consistent and systematic LBT failure associated with uplink transmissions in new radio (NR) operating over unlicensed spectrum. For example, a user equipment (UE) identifies a plurality of transmission occasions to be performed by the UE over the unlicensed spectrum. The UE further performs a plurality of listen before talk (LBT) procedures associated with respective ones of the plurality of transmission occasions to be performed by the UE, and tracks a number of LBT failures during the performance of the plurality of LBT procedures, wherein a LBT failure occurs due to a channel used for the associated LBT procedure being busy or when an LBT backoff is still running from a previous LBT failure. The UE further implements a recovery procedure in response to the LBT failures exceeding a predetermined threshold within a predetermined time period.