公开(公告)号：US20240297759A1

公开(公告)日：2024-09-05

申请号：US18655475

申请日：2024-05-06

Applicant: Apple Inc.

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

IPC: H04L5/00 ,  H04B7/06 ,  H04W72/044

CPC classification number: H04L5/005 ,  H04B7/0695 ,  H04L5/0078 ,  H04W72/044

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：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.

公开(公告)号：US20220167407A1

公开(公告)日：2022-05-26

申请号：US17430847

申请日：2020-02-16

Applicant: Apple Inc.

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

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

Abstract: Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for a shared channel occupancy time (COT) procedure in a wireless channel of unlicensed spectrum. The shared COT can be utilized among one or more user equipment (UE) and a 5G Node B (gNB). A UE contends for access to the channel to acquire the COT, and transmits in the uplink (UL) according to the UEs time-domain configuration. When the UL transmission does not utilize the entire COT, the UE can signal to the gNB that the COT can be shared. In particular, the UE transmits an indication of a COT boundary that the gNB can use to determine when to transmit DL data in the shared COT. The COT can also be shared between two or more UEs in addition to the gNB.

公开(公告)号：US20220095379A1

公开(公告)日：2022-03-24

申请号：US17420185

申请日：2020-01-10

Applicant: Apple Inc.

Inventor： Gang XIONG ,  Yushu ZHANG ,  Yongjun KWAK ,  Sergey SOSNIN ,  Hwan-Joon KWON

IPC: H04W74/08

Abstract: Some embodiments of this disclosure include apparatuses and methods for a fallback procedure for a 2-step random access channel (RACH) procedure for data transmission in a wireless communication system where the apparatuses and methods include at least generating, by a user equipment (UE), a first signal that includes a first message (MsgA) for a 2-step random access channel (RACH) procedure, transmitting, by the UE, the first signal to a next generation NodeB (gNB), determining, by the UE, whether a 4-step RACH procedure is to be used to further transmit the first signal including the MsgA, and further transmitting, by the UE, the first signal to the gNB using the 4 step RACH procedure based on determining that the 4-step RACH procedure should be used.

公开(公告)号：US20210314885A1

公开(公告)日：2021-10-07

申请号：US17267085

申请日：2019-08-09

Applicant: Apple Inc.

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

IPC: H04W56/00 ,  H04L5/00 ,  H04W74/08 ,  H04W72/04 ,  H04W52/36

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：US20200213973A1

公开(公告)日：2020-07-02

申请号：US16632416

申请日：2018-07-26

Applicant: Apple Inc.

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

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

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：US20240073942A1

公开(公告)日：2024-02-29

申请号：US18472545

申请日：2023-09-22

Applicant: Apple Inc.

Inventor： Alexei DAVYDOV ,  Seunghee HAN ,  Gang XIONG ,  Gregory V. MOROZOV ,  Yushu ZHANG ,  Joonyoung CHO ,  Dae Won LEE ,  Yongjun KWAK

IPC: H04W74/00 ,  H04L5/00

CPC classification number: H04W74/006 ,  H04L5/0091 ,  H04W74/0833

Abstract: Described is an apparatus of a User Equipment (UE) operable to communicate with a fifth-generation Evolved Node-B (gNB) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to process a message comprising an indicator to indicate a number of contention based physical random access channel (PRACH) preambles within a PRACH occasion per Synchronization Signal Block (SSB). The second circuitry may be operable to generate a first PRACH occasion, based on the indicator.

公开(公告)号：US20230036711A1

公开(公告)日：2023-02-02

申请号：US17950266

申请日：2022-09-22

Applicant: Apple Inc.

Inventor： Alexei DAVYDOV ,  Seunghee HAN ,  Gang XIONG ,  Gregory V. MOROZOV ,  Yushu ZHANG ,  Joonyoung CHO ,  Dae Won LEE ,  Yongjun KWAK

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

Abstract: Described is an apparatus of a User Equipment (UE) operable to communicate with a fifth-generation Evolved Node-B (gNB) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to process a message comprising an indicator to indicate a number of contention based physical random access channel (PRACH) preambles within a PRACH occasion per Synchronization Signal Block (SSB). The second circuitry may be operable to generate a first PRACH occasion, based on the indicator.

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：US20220116911A1

公开(公告)日：2022-04-14

申请号：US17275531

申请日：2019-09-25

Applicant: Apple Inc.

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

IPC: 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 PDSCH 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.