公开(公告)号：US20220094487A1

公开(公告)日：2022-03-24

申请号：US17421791

申请日：2020-01-11

Applicant: Apple Inc.

Inventor： Bishwarup Saso MONDAL ,  Prerana RANE ,  Yongjun KWAK ,  Daewon LEE

IPC: H04L5/00 ,  H04B7/06 ,  H04W72/04

Abstract: Disclosed herein are system, method, and computer program product embodiments for performing Synchronization Single Block (SSB) transmission using a number of SSB beams. An embodiment operates by determining a SSB index for a SSB based on a candidate position in a set of candidate positions and the number of SSB beams. The embodiment determines a shift value for the SSB index based on the candidate position and the number of SSB beams. The embodiment determines a frame timing for the SSB based the SSB index and the shift value for the SSB index. The embodiment then transmits, by radio front end circuitry, the SSB to a user equipment (UE) based on the frame timing for the SSB.

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：US20210410086A1

公开(公告)日：2021-12-30

申请号：US16625131

申请日：2018-06-20

Applicant: Apple Inc.

Inventor： Alexei Vladimirovich DAVYDOV ,  Avik SENGUPTA ,  Gang XIONG ,  Hong HE ,  Yongjun KWAK ,  Debdeep CHATTERJEE ,  Dae Won LEE

IPC: H04W56/00 ,  H04L5/00 ,  H04L1/00 ,  H04W72/04

Abstract: A user equipment (UE) can include processing circuitry configured to decode synchronization information within a synchronization signal (SS) block, the SS block received within a SS burst set and occupying a subset of a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols within a slot. At least one of the symbols in the subset coincides with a pre-defined symbol location associated with a demodulation reference signal (DM-RS) of a physical downlink shared channel (PDSCH). A synchronization procedure can be performed with a next generation Node-B (gNB) based on the synchronization information within the SS block. The DM-RS can be detected within the slot, where the DM-RS starts at a symbol location that is shifted from the pre-defined symbol location and following the subset of symbols. Downlink data received via the PDSCH is decoded based on the detected DM-RS.

公开(公告)号：US20240314709A1

公开(公告)日：2024-09-19

申请号：US18671540

申请日：2024-05-22

Applicant: Apple Inc.

Inventor： Yongjun KWAK ,  Daewon LEE ,  Gregory MOROZOV ,  Seunghee HAN

IPC: H04W56/00 ,  H04L5/00 ,  H04W52/36 ,  H04W72/23 ,  H04W74/0833

CPC classification number: H04W56/001 ,  H04L5/0048 ,  H04W52/36 ,  H04W72/23 ,  H04W74/0833

Abstract: Methods, systems, and storage media are described for random access procedures triggered based on physical downlink control channel (PDDCH) orders. Other embodiments may be described and/or claimed.

公开(公告)号：US20240276598A1

公开(公告)日：2024-08-15

申请号：US18646364

申请日：2024-04-25

Applicant: Apple Inc.

Inventor： Gang XIONG ,  Debdeep CHATTERJEE ,  Alexey KHORYAEV ,  Sergey PANTELEEV ,  Hong HE ,  Yushu ZHANG ,  Yongjun KWAK

IPC: H04W88/06 ,  H04L1/00 ,  H04L1/1607 ,  H04L1/1812 ,  H04L1/1867 ,  H04L5/00 ,  H04W24/08 ,  H04W72/0446

CPC classification number: H04W88/06 ,  H04L1/0013 ,  H04L1/0061 ,  H04L1/1664 ,  H04L1/1819 ,  H04L1/1887 ,  H04L5/0007 ,  H04L5/0055 ,  H04W24/08 ,  H04W72/0446

Abstract: Described is an apparatus of a User Equipment (UE). The apparatus may comprise a first circuitry, a second circuitry, and a third circuitry. The first circuitry may be operable to process one or more configuration transmissions from the gNB carrying a rule for Uplink (UL) collisions and process a first Downlink (DL) transmission and a second DL transmission. The second circuitry may be operable to identify a first UL transmission for the first DL transmission and a second UL transmission for the second DL transmission, the first UL transmission overlapping with the second UL transmission in at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol. The third circuitry may be operable to generate at least one of the first UL transmission and the second UL transmission in accordance with the rule for UL collisions.

公开(公告)号：US20240008099A1

公开(公告)日：2024-01-04

申请号：US18369706

申请日：2023-09-18

Applicant: Apple Inc.

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

IPC: H04W74/08 ,  H04W76/19 ,  H04W72/0453 ,  H04W72/1263 ,  H04W74/00

CPC classification number: H04W74/0841 ,  H04W76/19 ,  H04W74/0866 ,  H04W72/1263 ,  H04W74/006 ,  H04W72/0453

Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. The UE may receive, from a gNB, configuration information related to a 2-step random access (RA) procedure between the UE and the gNB in unlicensed spectrum. The 2-step RA procedure may include: an uplink MsgA message that includes, within a random access occasion (RO), a MsgA preamble and a MsgA payload; and a downlink MsgB message that includes, within another RO, a MsgB PDCCH and a MsgB payload. The configuration information may indicate: resources allocated for the MsgA preamble; and a mapping between the resources allocated for the MsgA preamble and the MsgA payload. The UE may determine the resources allocated for the MsgA pay load based on the resources allocated for the MsgA preamble and the mapping.

公开(公告)号：US20220201757A1

公开(公告)日：2022-06-23

申请号：US17599697

申请日：2020-03-30

Applicant: Apple Inc.

Inventor： Tom CRUZ ,  Yingyang LI ,  Yongjun KWAK

IPC: H04W74/08 ,  H04W74/00 ,  H04L1/18 ,  H04L5/00 ,  H04L1/16

Abstract: An approach is described for a user equipment (UE) for transmission of hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback in communication with a next-generation NodeB (gNB) using new radio unlicensed (NR-U) in an unlicensed spectrum. The UE receives downlink (DL) data in a first channel occupancy time (COT). The UE also receives a triggering downlink control indicator (DCI) during a second COT, the triggering DCI providing an indication of a HARQ feedback that is pending for a corresponding HARQ process, and the second COT carrying no scheduled DL data. In addition, the UE receives a triggering downlink control indicator (DCI) during a second COT, the triggering DCI providing an indication of a HARQ feedback that is pending for a corresponding HARQ process, and the second COT carrying no scheduled DL data. The UE transmits the HARQ feedback based on the triggering DCI.

公开(公告)号：US20220183053A1

公开(公告)日：2022-06-09

申请号：US17440678

申请日：2020-04-29

Applicant: Apple Inc.

Inventor： Yingyang LI ,  Salvatore TALARICO ,  Yongjun KWAK ,  Jose Armando OVIEDO ,  Hong HE ,  Gang XIONG

IPC: H04W74/00 ,  H04W74/08

Abstract: Systems, methods, and apparatuses disclosed herein can perform uplink (UL) transmission in new radio (NR) systems operating on an unlicensed spectrum. These systems, methods, and apparatuses can receive a downlink (DL) signal comprising information associated with listen before talk (LBT) type. These systems, methods, and apparatuses can perform the UL transmission based on the LBT type.

公开(公告)号：US20220110152A1

公开(公告)日：2022-04-07

申请号：US17429571

申请日：2020-02-12

Applicant: Apple Inc.

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

IPC: H04W74/00 ,  H04W74/08

Abstract: A mode of operation is provided for user equipment (UE) communicating in unlicensed carrier (e.g., NR-unlicensed). The UE is configured to operate in one or more modes of operation, including FBE and LBE. The UE can be configured to operate in FBE, where the equipment has a fixed frame period according to CCA, or in LBE, where the equipment determines whether the channel is idle or not and transmits only when the channel is clear. The UE is configured to operate in a mode of operation to be used in the communicating with a communication network (e.g., a cellular network), where the UE can transmit and/or receive one or more listen before talk (LBT) messages with the communication network through a Radio Access Network (RAN) based on the mode of operation.

公开(公告)号：US20220061116A1

公开(公告)日：2022-02-24

申请号：US17275404

申请日：2019-09-16

Applicant: Apple Inc.

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

IPC: H04W76/19 ,  H04W24/08 ,  H04L5/00 ,  H04L12/24

Abstract: Systems and methods of in-sync/out-of-sync (IS/OOS) determination in the unlicensed band are described. Reference signals are measured on the unlicensed band. If the UE determines that at least one of the reference signals is missing, the IS/OOS condition is evaluated on that basis. If the missing signals are ignored when determining the IS/OOS condition, and the IS/OOS condition is unable to evaluated, the L1 sends an indication to the RRC layer. If the number of indications exceeds a threshold, the UE performs re-establishment or sends a report to the base station for adjustment of the reference signal resources. If the missing signals are counted, the missing signals are weighted based on proximity to the noise floor or a number of adjacent signals that are missing.