公开(公告)号：US20220304054A1

公开(公告)日：2022-09-22

申请号：US17442113

申请日：2020-08-05

Applicant: Apple Inc.

Inventor： Weidong Yang ,  Oghenekome Oteri ,  Sigen Ye ,  Haitong Sun ,  Hong He ,  Jie Cui ,  Chunxuan Ye ,  Wei Zeng ,  Dawei Zhang ,  Chunhai Yao ,  Yushu Zhang ,  Yang Tang

IPC: H04W74/08 ,  H04W72/04

Abstract: Apparatuses, systems, and methods for channel access scheme enhancements for systems operating in unlicensed higher frequency bands. A wireless device may perform channel access detection (CAD) measurements on a channel at a first periodicity, determine a CAD metric based on the CAD measurements at a second periodicity, and select, for the channel, a first channel access scheme from a plurality of channel access schemes based on comparison of the CAD metric to a threshold. The first channel access scheme may include a first set of channel access procedures that may define physical channels and signals to utilize respective channel procedures. In instances when the CAD metric is below the threshold, the first channel access scheme may include accessing a channel using a first listen before talk (LBT) procedure that is less restrictive than a second LTB procedure used when the CAD metric is above the threshold.

公开(公告)号：US20220303973A1

公开(公告)日：2022-09-22

申请号：US17437935

申请日：2020-10-12

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Hong He ,  Wei Zeng ,  Dawei Zhang ,  Chunxuan Ye ,  Sigen Ye ,  Weidong Yang ,  Chunhai Yao ,  Jie Cui ,  Yang Tang ,  Yushu Zhang

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/0413

Abstract: Apparatuses, systems, and methods for SRS antenna switching. A UE may transmit, to a base station, a capability message indicating an antenna configuration associated with SRS antenna switching e.g., via as RRC signaling. The capability message may indicate at least one of (and/or one or more of) a one transmit point (1T) and six receive point (6R) SRS resource set configuration, a 1T8R SRS resource set configuration, a 2T6R SRS resource set configuration, a 2T8R SRS resource set configuration, and/or a 4T8R SRS resource set configuration. The UE may receive, from the base station, a configuration message, e.g., via RRC signaling. The configuration message may indicate an SRS antenna switching configuration based, at least in part, on the capability message. The UE may transmit, to the base station, one or more SRSs, e.g., according to the SRS antenna switching configuration.

公开(公告)号：US20220303087A1

公开(公告)日：2022-09-22

申请号：US17437960

申请日：2020-10-12

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Huaning Niu ,  Hong He ,  Wei Zeng ,  Dawei Zhang ,  Chunxuan Ye ,  Weidong Yang ,  Chunhai Yao ,  Jie Cui ,  Yang Tang ,  Yushu Zhang

IPC: H04L5/00 ,  H04W72/04

Abstract: Apparatuses, systems, and methods for sounding reference signal (SRS) coverage enhancement. A user equipment device (UE) may receive a configuration for SRS time domain bundling from a base station and may transmit, to the base station, at least one SRS transmission in accordance with the configuration. The configuration may include an indication of (and/or indicate) one or more SRS transmission occasions. The configuration may be communicated via higher layer signaling or physical layer signaling. The RRC parameter may be an SRS-ResourceSet parameter or an SRS-Resource parameter and may include a nrofSlots parameter to indicate the number of slots, where a slot may correspond to an SRS transmission occasion. The MAC CE may include at least four bits indicating the number of slots. The DCI may include at least one field indicating the number of slots.

公开(公告)号：US20220279579A1

公开(公告)日：2022-09-01

申请号：US17053718

申请日：2019-11-07

Applicant: Apple Inc.

Inventor： Hong He ,  Dawei Zhang ,  Wei Zeng ,  Chunhai Yao ,  Haitong Sun ,  Yuchul Kim ,  Yushu Zhang ,  Yang Tang ,  Weidong Yang ,  Jie Cui ,  Chunxuan Ye ,  Oghenekome Oteri ,  Wei Zhang

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/04 ,  H04L27/26

Abstract: Apparatuses, systems, and methods for selecting channel access mechanisms in wireless communications, and particularly in 3GPP NR-U. For example, an appropriate listen-before talk (LBT) channel access category (Cat) may be defined for certain messages, such as certain DL and/or UL control messages and certain RACH messages. For other messages, an appropriate Cat may be signaled by the base station, e.g., in a DCI message or SIB. Mechanisms are provided for the base station to signal to the UE certain channel access profile parameters, such as an appropriate LBT Cat, CAPC, and/or CP extension. Mechanisms are also provided for adjustment of contention window duration.

公开(公告)号：US20220217707A1

公开(公告)日：2022-07-07

申请号：US17609012

申请日：2020-05-13

Applicant: Apple Inc.

Inventor： Yuhan Zhou ,  Yang Tang ,  Jie Cui

IPC: H04W72/04 ,  H04W60/04 ,  H04W76/22

Abstract: The disclosure relates to RRC based BWP switching delay and use of UE capability information to minimize the amount of schedules BWP switching delay for those UE with capabilities that can properly transmit and receive data under lower BWP switching delay constraints.

公开(公告)号：US20220191762A1

公开(公告)日：2022-06-16

申请号：US17598137

申请日：2020-07-15

Applicant: Apple Inc.

Inventor： Rui Huang ,  Zhibin Yu ,  Jie Cui

IPC: H04W36/30 ,  H04W48/16 ,  H04W48/10

Abstract: The present application relates to wireless devices and components including apparatus, systems, and methods for two-stage cell reselection in New Radio (NR) systems operating on unlicensed spectrum. In some embodiments, a user equipment may be perform a pre-check of a public land mobile network associated with a target cell prior to cell reselection.

公开(公告)号：US11363476B2

公开(公告)日：2022-06-14

申请号：US16392936

申请日：2019-04-24

Applicant: Apple Inc.

Inventor： Candy Yiu ,  Jie Cui ,  Yang Tang

IPC: H04W24/10 ,  H04W72/04 ,  H04W76/27 ,  H04W88/02 ,  H04W88/08

Abstract: Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for beam management techniques in New Radio (NR) Standalone (SA) applications. Various embodiments describe how to configure one or more measurement gaps in an NR SA network so that a UE may apply the same or different measurement gaps while operating with various technologies or services in various frequency ranges. Other embodiments may be described and claimed.

公开(公告)号：US20220166486A1

公开(公告)日：2022-05-26

申请号：US17439179

申请日：2020-02-12

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Weidong Yang ,  Yushu Zhang ,  Wei Zeng ,  Dawei Zhang ,  Yuchul Kim ,  Hong He ,  Chunhai Yao ,  Chunxuan Ye ,  Oghenekome Oteri ,  Ghaith N Hattab ,  Ismael Gutierrez Gonzalez ,  Jie Cui ,  Yang Tang ,  Yeong-Sun Hwang

IPC: H04B7/06 ,  H04B7/0417

Abstract: A base station and wireless communication (UE) may perform type II CSI-RS port selection based at least on partial reciprocity between an uplink path and a downlink path between the base station and the UE. The base station may identify dominant signal paths between the base station and the UE, based on measurements performed during uplink transmissions, and may transmit, to the UE, corresponding information indicative of CSI measurement and reporting configuration that may include a single measurement resource or multiple measurement resources. Each measurement resource may include multiple-port CSI-RS ports. The UE may indicate, to the base station, selection of a measurement resource when multiple measurement resources are configured, and may also report layer independent or layer common selection of a subset of CSI-RS ports included in the indicated single measurement resource or multiple measurement resources. Further enhancements include frequency domain compression enhancement and dynamic codebook parameter reconfiguration.

公开(公告)号：US20220159772A1

公开(公告)日：2022-05-19

申请号：US17440526

申请日：2020-05-08

Applicant: Apple Inc.

Inventor： Manasa Raghavan ,  Jie Cui ,  Yang Tang ,  Qiming Li ,  Zhibin Yu

IPC: H04W76/20

Abstract: Systems, devices, and techniques for wireless communications based on one or more transmission configuration indicator (TCI) states are described. A described technique performed by a user equipment (UE) includes receiving a first downlink channel based on a current TCI state; receiving a physical downlink shared channel (PDSCH) in a first slot, the PDSCH carrying a radio resource control (RRC) activation command in the first slot, the RRC activation command indicating a switch to a target TCI state; waiting until an end of a switching period triggered by the RRC activation command to use the target TCI state, the switching period being based on a RRC processing delay; and receiving, based on the end of the switching period, a second downlink channel based on the target TCI state in a second slot.

公开(公告)号：US20220159662A1

公开(公告)日：2022-05-19

申请号：US17440552

申请日：2020-03-20

Applicant: Apple Inc.

Inventor： Qiming Li ,  Jie Cui ,  Yang Tang ,  Hua Li ,  Rui Huang

IPC: H04W72/08 ,  H04W72/04 ,  H04W24/10 ,  H04L5/00

Abstract: Systems, devices, and techniques for measuring and reporting cross-link interference (CLI) are described. A described technique includes determining, by a first wireless device, whether to perform a CLI measurement; determining a quantity of activated transmission configuration indicator (TCI) states associated with a second wireless device; performing the CLI measurement based on the quantity of activated TCI states; and transmitting a CLI report in response to the CLI measurement.