公开(公告)号：US20220022248A1

公开(公告)日：2022-01-20

申请号：US17290281

申请日：2019-11-01

Applicant: Apple Inc.

Inventor： Yongjun KWAK ,  Lopamudra KUNDU ,  Bishwarup MONDAL ,  Dae Won LEE

IPC: H04W74/00 ,  H04W74/08

Abstract: Devices and methods of providing channel occupancy time (COT) are described. After a gNB acquires an unlicensed channel for a COT, the gNB indicates the COT length to a UE using a PDCCH having a DCI formed in accordance with DCI format 2_0. The slot format of the last slot of the COT is indicated using a reserved slot format indicator that is reserved to indicate the end of the COT. The reserved slot format indicator indicates a last slot format of available slot formats of DCI format 2_0. Dummy bits fill the DCI after the reserved slot format indicator. Alternatively, to indicate the COT length, a COT field dedicated to providing the COT is used in the DCI or the CRC is masked using a slot format indication Radio Network Temporary Identifier.

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：US20240015698A1

公开(公告)日：2024-01-11

申请号：US18371751

申请日：2023-09-22

Applicant: Apple Inc.

Inventor： Anthony LEE ,  Seau S. LIM ,  Yongjun KWAK ,  Daewon LEE ,  Youn Hyoung HEO ,  Lopamudra KUNDU

IPC: H04W68/02

CPC classification number: H04W68/02

Abstract: Systems and methods of increasing paging opportunities when the unlicensed band is used are described. The gNB sends an RRC message that indicates multiple monitoring occasions in a paging occasion of a paging frame. The UE monitors a monitoring occasion of a PO to determine whether a PDCCH with a P-RNTI has been received in an unlicensed band. If such a PDCCH is received, the UE decodes PD SCH information in the PDCCH to determine whether the P-RNTI is a P-RNTI of the UE. If so, the UE avoids monitoring subsequent monitoring occasions of the PO. If the PDCCH does not contain a P-RNTI, the UE continues to monitor other monitoring occasions within the PO.

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.

公开(公告)号：US20220038233A1

公开(公告)日：2022-02-03

申请号：US17279948

申请日：2019-09-27

Applicant: Apple Inc.

Inventor： Lopamudra KUNDU ,  Bishwarup MONDAL ,  Gang XIONG ,  Yongjun KWAK ,  Daewon LEE

IPC: H04L5/00 ,  H04W74/08

Abstract: The present invention discloses one or more computer-readable media comprising instructions to: determine SRS resource allocation information to configure uplink resources for an SRS, the uplink resources to include a plurality of bandwidth ranges within a sounding bandwidth; perform a LET procedure in individual bandwidth ranges of the plurality of bandwidth ranges to detect at least one bandwidth range available for the SRS; and generate the SRS for transmission within the at least one bandwidth range.

公开(公告)号：US20220330208A1

公开(公告)日：2022-10-13

申请号：US17825035

申请日：2022-05-26

Applicant: Apple Inc.

Inventor： Dae Won LEE ,  Seunghee HAN ,  Gregory Vladimirovich MOROZOV ,  Alexei DAVYDOV ,  Yongjun KWAK

IPC: H04W72/00 ,  H04J11/00 ,  H04L1/00 ,  H04L1/16 ,  H04W56/00 ,  H04W72/04

Abstract: A user equipment (UE) can include processing circuitry configured to decode physical broadcast channel (PBCH) information received from a base station (BS). The decoded PBCH information includes a scrambled PBCH payload and an unscrambled bit sequence. A scrambling sequence is generated based on time information signaling within the unscrambled bit sequence. The scrambled PBCH payload is de-scrambled using the scrambling sequence, to obtain master information block (MIB) information. System information block (SIB) information is decoded based on the MIB information. The decoded PBCH information includes cyclic redundancy check (CRC) information. The scrambled PBCH payload and the unscrambled bit sequence can be verified based on the CRC information. The time information signaling includes one or more bits of a system frame number (SFN).

公开(公告)号：US20220191935A1

公开(公告)日：2022-06-16

申请号：US17439886

申请日：2020-03-26

Applicant: Apple Inc.

Inventor： Gang XIONG ,  Yongjun KWAK ,  Lopamudra KUNDU ,  Yushu ZHANG ,  Sergey SOSNIN

IPC: H04W74/08 ,  H04W16/14

Abstract: Systems and methods are described for a 2-Step Random Access Channel (RACH) for New Radio (NR) with unlicensed operation. The systems and methods include at least, generating, by a user equipment (UE), a MsgA of a random access channel (RACH) procedure associated with the NR network, the MsgA having a physical random access channel (PRACH) occasion and an associated physical uplink shared channel (PUSCH) occasion for transmission during the RACH procedure, and transmitting, by the UE, the MsgA to a base station (gNB) over unlicensed spectrum of the NR network during the RACH procedure.