公开(公告)号：US20220225428A1

公开(公告)日：2022-07-14

申请号：US17442506

申请日：2020-06-05

Applicant: Apple Inc.

Inventor： Gang XIONG ,  Seau S. LIM ,  Yushu ZHANG ,  Yujian ZHANG ,  Sergey SOSNIN

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/04 ,  H04W72/14 ,  H04W72/12 ,  H04L1/18 ,  H04L5/00 ,  H04L1/00

Abstract: Systems, devices, and techniques for random access in a wireless communication network are described. A described technique performed by a user equipment (UE) includes transmitting a first message of a two-step random access procedure to a node of a wireless communication network; receiving, in response to the first message, a downlink control information (DCI) message via a physical downlink control channel (PDCCH) and a second message of the two-step random access procedure via a physical downlink shared channel (PDSCH) in accordance with the DCI message; determining, by the UE, a physical uplink control channel (PUCCH) resource based on the second message; and transmitting, by the UE, hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback for the second message on the determined PUCCH resource.

公开(公告)号：US20220183049A1

公开(公告)日：2022-06-09

申请号：US17440737

申请日：2020-05-01

Applicant: Apple Inc.

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

IPC: H04W72/14 ,  H04W72/12 ,  H04L1/08 ,  H04W76/20

Abstract: Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for improving configured grant for new radio (NR) unlicensed. For example, some embodiments are directed to an electronic device including radio front end circuitry and processor circuitry. The processor circuitry can be configured to receive, using the radio front end circuitry, a message from a base station and, based on the received message, determine whether to use a lowest Channel Access Priority Class (CAPC) or a highest Units (SDUs) that are multiplexed in one or more MAC Protocol Data Units (PDUs) for an uplink (UL)transmission. The processor circuitry transmits, using the radio front end circuitry, the MAC PDU to the base station.

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：US20220104306A1

公开(公告)日：2022-03-31

申请号：US17427167

申请日：2020-02-10

Applicant: Apple Inc.

Inventor： Bharat SHRESTHA ,  Seau S. LIM ,  Marta MARTINEZ TARRADELL

IPC: H04W76/27 ,  H04L1/18 ,  H04W76/34 ,  H04L5/00

Abstract: Some embodiments of this disclosure include apparatuses and methods for facilitating a transmission, retransmission, and hybrid automatic repeat request (HARQ) process using preconfigured uplink resources (PUR) in IDLE mode. In some embodiments, user equipment (UE) may establish a first PUR and a second PUR to use in IDLE mode. The UE may transmit uplink data using the first PUR using a HARQ process. The UE may start a PUR retransmission timer and monitor a control channel for an acknowledgement message. The UE may identify an expiration of the PUR retransmission timer prior to receiving the acknowledgement message, and in response, may retransmit the uplink data using the second PUR.

公开(公告)号：US20210368572A1

公开(公告)日：2021-11-25

申请号：US17279267

申请日：2019-09-24

Applicant: Apple Inc.

Inventor： Seau S. LIM ,  Candy YIU ,  Youn HEO

IPC: H04W76/16 ,  H04W24/10 ,  H04W56/00 ,  H04L27/26

Abstract: Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for adequate failure secondary cell group (SCG) reporting in New Radio (NR) involved networks. Various embodiments describe how to generate a sufficient SCG failure report so that a master node (MN) in the network may acknowledge the corresponding failed reference signal including its frequency and subcarrier spacing. In accordance, the MN may configure the UE and network communication effectively. Other embodiments may be described and claimed.

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：US20220150973A1

公开(公告)日：2022-05-12

申请号：US17430595

申请日：2020-02-13

Applicant: Apple Inc.

Inventor： Seau S. LIM ,  Yujian ZHANG ,  Anthony LEE ,  Youn Hyoung HEO ,  Gang XIONG ,  Sudeep PALAT

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

Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media for use in a wireless network for facilitating radio access synchronization. The method includes receiving, from a user equipment (UE) a message having a media access control (MAC) control element (CE) format and comprising a MAC protocol data unit (PDU) structure, the message being formed by multiplexing one or more MAC service data units (SDUs). The method further includes generating a response message to the received message by multiplexing a MAC random access response (RAR) with one or more MAC SDUs. The method then transmits the response message to the UE

公开(公告)号：US20210337432A1

公开(公告)日：2021-10-28

申请号：US16479891

申请日：2018-03-29

Applicant: Apple Inc.

Inventor： Anthony LEE ,  Huaning NIU ,  Seau S. LIM

IPC: H04W36/00

Abstract: Herein described are apparatuses, systems, and methods related to handover operations of user equipment within a wireless network. An apparatus for an evolved NodeB (eNB) may include circuitry to determine one or more candidate eNBs available to provide service to a user equipment (UE) based on cell information received from one or more other eNBs, and generate an autonomous handover (HO) information message for transmission to the UE, wherein the autonomous HO information message includes an indication of the one or more candidate eNBs. The apparatus may further include memory to store the indication of the one or more candidate eNBs. Other embodiments may be described and/or claimed.

公开(公告)号：US20250151128A1

公开(公告)日：2025-05-08

申请号：US19018142

申请日：2025-01-13

Applicant: Apple Inc.

Inventor： Gang XIONG ,  Yujian ZHANG ,  Yushu ZHANG ,  Sergey SOSNIN ,  Seau S. LIM

IPC: H04W74/0833 ,  H04W72/23 ,  H04W72/566 ,  H04W74/00

Abstract: A method and device are disclosed for performing collision resolution in a two-step random access channel (RACH) process. In such a process, an MsgA PUSCH signal and a grant based PUSCH signal may collide. When such a collision is detected, either the MsgA PUSCH signal or the grant based PUSCh signal are dropped. The other of the two signals is then transmitted. The determination regarding which signal to drop can be based on a set of rules stored in memory.

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.