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：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.

公开(公告)号：US20220191878A1

公开(公告)日：2022-06-16

申请号：US17593079

申请日：2020-05-01

Applicant: APPLE INC.

Inventor： Zhibin YU ,  Yushu ZHANG

IPC: H04W72/08 ,  H04W72/04 ,  H04L5/00

Abstract: Systems and methods for improving the robustness of a DCI triggered beam update in 5G NR are disclosed herein. A g Node B (gNB) may associate a reference signal to a beam pattern (or beam configuration) and prepare Downlink Control Information (DCI) of a Physical Downlink Control Channel (PDCCH) that includes aperiodic Channel-State Information Reference Signal (AP CSI-RS) information indicating the beam pattern. A user equipment (UE) may decode the DCI, extract the AP CSI-RS information, update the beam pattern of a reference signal based on the AP CSI-RS information, and generate an uplink (UL) feedback message indicating that the PDCCH was successfully decoded by the UE. The gNB may then decode the uplink (UL) feedback message and, in response, update a receive (RX) beam of the gNB to correspond to the beam pattern associated to the reference signal.

公开(公告)号：US20220190902A1

公开(公告)日：2022-06-16

申请号：US17428491

申请日：2020-02-13

Applicant: Apple Inc.

Inventor： Yushu ZHANG ,  Alexei DAVYDOV ,  Gang XIONG ,  Guotong WANG

IPC: H04B7/06 ,  H04W76/19 ,  H04W56/00 ,  H04W52/36 ,  H04L5/00

Abstract: Disclosed herein are system, method, and computer program product embodiments for performing beam selection. An embodiment operates by receiving, from a base station, a request for a report for at least one uplink beam. In response, the embodiment generates the report for the at least one uplink beam. The report for the at least one uplink beam can include an indication that a resource corresponding to the at least one uplink beam is available for uplink beam indication. The resource can be a Synchronization Signal Block (SSB) resource or a Channel State Information Reference Signal (CSI-RS) resource. The embodiment transmits the report for the at least one uplink beam to the base station. The embodiment then receives, from the base station, an indication that the at least one uplink beam is selectable for uplink transmission based on the report for the uplink beam.

公开(公告)号：US20220183060A1

公开(公告)日：2022-06-09

申请号：US17593669

申请日：2020-04-29

Applicant: Apple Inc.

Inventor： Yingyang LI ,  Yushu ZHANG ,  Gang XIONG ,  Yongjun KWAK ,  Lopamudra KUNDU

IPC: H04W74/08 ,  H04W72/04

Abstract: Devices, systems and methods for a fifth generation (5G) or new radio (NR) system comprising determining a configuration for an uplink (UL) transmission resource with respect to a listen before talk (LBT) operation on an unlicensed spectrum and transmitting uplink control information (UCI) on the UL transmission resource based on the configuration subjected to the LBT operation.

公开(公告)号：US20220159740A1

公开(公告)日：2022-05-19

申请号：US17441612

申请日：2020-05-01

Applicant: Apple Inc.

Inventor： Gang XIONG ,  Yushu ZHANG ,  Sergey SOSNIN

IPC: H04W74/08 ,  H04W72/12 ,  H04W72/04 ,  H04W56/00 ,  H04L5/00

Abstract: This disclosure describes improving a 4-step RACH procedure by using a 2-step RACH procedure. A UE transmits a PRACH preamble and associated MsgA physical uplink shared channel (PUSCH) on a configured time and frequency resource. After successful detection of the PRACH preamble, and decoding of the MsgA PUSCH, the gNB transmits MsgB in the second step. Generally, a mapping is used between the PRACH preamble and the PUSCH resource unit for 2-step RACH. This disclosure describes the mapping for 2-step RACH.

公开(公告)号：US20220116969A1

公开(公告)日：2022-04-14

申请号：US17420757

申请日：2020-01-13

Applicant: Apple Inc.

Inventor： Hong HE ,  Debdeep CHATTERJEE ,  Gang XIONG ,  Yushu ZHANG

IPC: H04W72/12 ,  H04W72/04 ,  H04L27/26 ,  H04W24/08 ,  H04L5/00

Abstract: Systems, methods, and apparatuses are provided for determining a number of physical downlink control channel (PDCCH) candidates and non-overlapped control channel elements (CCEs) for a UE configured with a plurality of component carriers having more than one subcarrier spacing (SCS). The plurality of component carriers are assigned to a number of cell groups. Each cell group includes a scheduling component carrier providing scheduling information for the other component carriers in the cell group. A reference slot window is selected based on an SCS of component carriers assigned to each cell group. And a number of PDCCH candidates and non-overlapped CCEs per the reference slot window are determined based on a number of and SCS of the component carriers in each cell group. Control information in a downlink radio frame is monitored by the UE based on the number of PDCCH candidates and non-overlapped CCEs.

公开(公告)号：US20220007308A1

公开(公告)日：2022-01-06

申请号：US17282735

申请日：2019-10-04

Applicant: Apple Inc.

Inventor： Gang XIONG ,  Hong HE ,  Yushu ZHANG

IPC: H04W52/36 ,  H04W52/34 ,  H04W76/15 ,  H04W72/04

Abstract: Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for determining dynamic power sharing in a dual connectivity network. Other embodiments may be described and claimed.

公开(公告)号：US20210288708A1

公开(公告)日：2021-09-16

申请号：US17334207

申请日：2021-05-28

Applicant: Apple Inc.

Inventor： Alexei DAVYDOV ,  Sameer PAWAR ,  Wook Bong LEE ,  Yushu ZHANG ,  Victor SERGEEV ,  Joonyoung CHO ,  Dmitry DIKAREV

IPC: H04B7/06

Abstract: Herein described are apparatuses, systems, and methods for measurement and reporting of channel state information within wireless network systems. In embodiments, an apparatus for a user equipment (UE) may include memory to store a rank indicator (RI), a precoding matrix index (PMI), and a channel quality indicator (CQI) of channel state information (CSI) for the UE. The apparatus may further include circuitry to concatenate the RI, the PMI, and the CQI to produce a concatenated CSI element, generate a CSI report that includes the concatenated CSI element, and cause the CSI report to be transmitted to a base station within a single slot. Other embodiments may be described and/or claimed.