公开(公告)号：US20220416884A1

公开(公告)日：2022-12-29

申请号：US17939158

申请日：2022-09-07

Applicant: Apple Inc.

Inventor： Yuchul Kim ,  Wei Zeng ,  Xiangying Yang ,  Dawei Zhang ,  Haitong Sun

IPC: H04B7/26 ,  H04W72/04 ,  H04L5/00 ,  H04L5/14 ,  H04W72/12

Abstract: Embodiments are presented herein of apparatuses, systems, and methods for utilizing a flexible slot indicator in wireless communication. A base station (BS) may establish communication with a first user equipment device (UE). The BS may determine a transmission direction for each of a plurality of symbols included in one or more slots. The BS may transmit a slot format indicator (SFI) to the UE. The SFI may indicate the transmission direction for each of the plurality of symbols included in one or more slots. The BS and the UE may perform communication during the one or more slots according to the determined transmission direction.

公开(公告)号：US20220399929A1

公开(公告)日：2022-12-15

申请号：US17893356

申请日：2022-08-23

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Dawei Zhang ,  Haijing Hu ,  Yuqin Chen ,  Haitong Sun ,  Wei Zeng

IPC: H04B7/06 ,  H04W76/19 ,  H04W76/27 ,  H04W74/08 ,  H04W80/02 ,  H04W88/08

Abstract: This disclosure relates to performing beam failure recovery using a contention based random access procedure in a cellular communication system. A wireless device and a cellular base station may establish a cellular link. Beam configuration information indicating an active beam for downlink communications may be provided. The wireless device may detect beam failure for the active beam. The wireless device may perform a contention based random access procedure based at least in part on detecting beam failure for the active beam. An indication of the detected beam failure may be provided to the cellular base station by the wireless device as part of the contention based random access procedure.

公开(公告)号：US20220377662A1

公开(公告)日：2022-11-24

申请号：US17267855

申请日：2020-02-12

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Jie Cui ,  Yang Tang ,  Dawei Zhang ,  Zhibin Wu ,  Fangli Xu ,  Hong He

IPC: H04W52/02 ,  H04W24/10 ,  H04W76/28

Abstract: Techniques discussed herein can facilitate configuration of a User Equipment (UE) with two or more Discontinuous Reception (DRX) configurations. A first set of techniques can facilitate configuration of the UE with independent DRX configurations for Frequency Range 1 (FR1) and for Frequency Range 2 (FR2). A second set of techniques can facilitate configuration of the UE with independent DRX configurations for a first set of one or more Component Carriers (CCs) associated with a first frequency band of a supported band combination and for a second set of one or more CCs associated with a second frequency band of the supported band combination. Various embodiments can employ techniques of one or more of the first set of techniques or the second set of techniques.

公开(公告)号：US20220361007A1

公开(公告)日：2022-11-10

申请号：US17757312

申请日：2020-12-15

Applicant: APPLE INC.

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

IPC: H04W16/28 ,  H04L5/00 ,  H04W56/00 ,  H04W74/08

Abstract: Methods and apparatus are provided for a UE to determine a UL spatial relation for an UL transmission in response to an unknown UL spatial relation switch. The UE may determine whether the UL spatial relation is based on an SRS transmission in UL, a CSI-RS in DL, or an SSB in the DL. If the UL spatial relation is based on the SRS transmission, the UE may select the UL spatial relation for the UL transmission corresponding to a Tx beam of the SRS transmission. If the UL spatial relation is based on the CSI-RS or the SSB, the UE may select the UL spatial relation for the UL transmission based on whether the unknown UL spatial relation switch s due to a corresponding resource for beam training not being configured by a communication network or a corresponding beam information being expired.

公开(公告)号：US11490397B2

公开(公告)日：2022-11-01

申请号：US16591542

申请日：2019-10-02

Applicant: Apple Inc.

Inventor： Wanping Zhang ,  Sachin J. Sane ,  Faraz Faheem ,  Wei Zhang ,  Dawei Zhang ,  Wei Zeng ,  Haitong Sun ,  Yuqin Chen ,  Haijing Hu ,  Ping Wang

IPC: H04W72/10 ,  H04W74/00 ,  H04W76/27 ,  G05D1/02 ,  G05D1/00 ,  H04W4/40 ,  H04W76/28 ,  H04W4/029 ,  G08G1/16 ,  H04W4/02 ,  H04W8/08 ,  H04W52/02 ,  H04W72/12

Abstract: Embodiments are presented herein for adjusting the conduct of routine communications of safety messages in V2X networks in order to conserve resources in participating power-limited devices while satisfying V2X system latency demands. Scheduling (e.g., timing and/or frequency) of safety message communications performed by certain UE devices participating in a V2X network may be dynamically adjusted according to various criteria, such as factors relating to the DRX cycle schedule, motion or mobility, traffic environment, and/or battery or power capabilities of the UE devices, which may conserve UE resources and power consumption. Certain UE devices may efficiently transmit safety messages to the V2X network using one of several proposed RACH-based procedures. In some embodiments, the size of safety message communications may be reduced through various compression techniques, and/or by reducing the amount of contained information, e.g., by omitting certain parameters, which may reduce the resources consumed by performing safety message communications.

公开(公告)号：US11489567B2

公开(公告)日：2022-11-01

申请号：US17224915

申请日：2021-04-07

Applicant: Apple Inc.

Inventor： Yu Zhang ,  Dawei Zhang ,  Haitong Sun ,  Wei Zeng ,  Yuchul Kim

IPC: H04B7/0456 ,  H04B7/06

Abstract: A base station may transmit to a device an indication of codebook subset restriction (CBSR), which includes at least a restriction on a frequency basis. The device may receive the indication of CBSR, and may transmit to the base station channel state information (CSI) according to the received indication of CBSR. The indication of CBSR may also include a restriction on a spatial basis and restrict the device from reporting the CSI based on a subset of the frequency basis in addition to the spatial basis per configuration of the base station. The indication of CBSR may include a separately configured maximum allowed amplitude of a weighting coefficient for the spatial basis and the frequency basis, where the weighting coefficient is associated with a column vector of a precoding matrix used by the base station and the device. The number of frequency bases and the frequency compression units may be determined based on a number of different criteria, for example the number of antennas, the number of subbands, etc.

公开(公告)号：US20220346123A1

公开(公告)日：2022-10-27

申请号：US17655252

申请日：2022-03-17

Applicant: APPLE INC.

Inventor： Huaning Niu ,  Dawei Zhang ,  Farhan Aziz ,  Haitong Sun ,  Hong He ,  Navid Ehsan ,  Sigen Ye ,  Wei Zeng ,  Wei Zhang ,  Weidong Yang

IPC: H04W72/12 ,  H04L5/00 ,  H04W76/28

Abstract: A wireless communication system may adapt physical downlink control channel (PDCCH) monitoring behaviors using downlink control information (DCI). The change in monitoring behavior may be skipping or switching. The timeline for applying switching or skipping may be applied after a reference point and a processing time. In some embodiments, the processing time may be either based on UE processing, network processing, or a combination.

公开(公告)号：US20220322289A1

公开(公告)日：2022-10-06

申请号：US17438498

申请日：2020-10-22

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Chunhai Yao ,  Dawei Zhang ,  Haijing Hu ,  Murtaza A. Shikari ,  Naveen Kumar R. Palle Venkata ,  Ralf Rossbach ,  Sarma V. Vangala ,  Sethuraman Gurumoorthy ,  Srinivasan Nimmala ,  Srirang A. Lovlekar ,  Sudeep Manithara Vamanan ,  Wei Zeng ,  Yuqin Chen ,  Zhibin Wu

IPC: H04W72/00

Abstract: Apparatuses, systems, and methods for enhancement of MBMS transmission reliability. A UE may receive PDCP PDUs via a PTM link from a network. The UE may determine to provide feedback regarding receipt of the PDCP PDUs, e.g., based, at least in part, on an occurrence of a triggering event. The triggering event may be configured by the network and may include the UE receiving a request for feedback from the network, the UE determining that at least one PDCP PDU is missing, the UE determining that a number of missing PDCP PDUs exceeds a threshold, and/or the UE determining that a PDCP reordering window is changing based on expiration of a PDCP reordering timer. The UE may transmit feedback associated with receipt of the PDCP PDUs. The feedback may include an indication of missing PDCP PDUs, e.g., such as an indication of a sequence number associated with missing PDCP PDUs.

公开(公告)号：US20220322288A1

公开(公告)日：2022-10-06

申请号：US17438250

申请日：2020-10-22

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Haijing Hu ,  Dawei Zhang ,  Yuqin Chen ,  Chunhai Yao ,  Yushu Zhang ,  Wei Zeng

IPC: H04W72/00

Abstract: User equipment devices (UEs) may receive multimedia broadcast and multicast service (MBMS) transmissions over a bandwidth part (BWP) specifically allocated for MBMS point-to-multipoint (PTM) transmissions, or over MBMS-specific resources configured for PTM transmissions within a UE-dedicated BWP. The network (e.g. base station) may configure the MBMS-specific BWP for the UE for the PTM transmissions per serving cell. The MBMS-specific BWP may be used for downlink transmissions, and may be cell specific or UE specific per serving cell. The base station may provide MBMS PTM scheduling information per BWP to the UE, may indicate whether a UE-dedicated BWP may be used for PTM scheduling and transmission, and may provide the corresponding scheduling configuration when applicable. The UE may communicate its various capabilities related to MBMS reception and simultaneous reception of PTM and point-to-point (PTP) transmissions to the base station to aid the base station in scheduling communications of the UE.

公开(公告)号：US20220322194A1

公开(公告)日：2022-10-06

申请号：US17686172

申请日：2022-03-03

Applicant: Apple Inc.

Inventor： Zhibin Wu ,  Chunxuan Ye ,  Dawei Zhang ,  Haijing Hu ,  Haitong Sun ,  Wei Zeng

IPC: H04W36/30 ,  H04W8/00 ,  H04W52/38

Abstract: Sidelink pathloss between a remote user equipment device (UE) and a relay UE may be determined based at least on transmit power information provided by the relay UE to the remote UE. The remote UE may receive, via a sidelink discovery signal from the relay UE, a message that includes first information representative of a transmit power of the relay UE and/or second information representative of a measured receive signal power of a sidelink solicitation signal previously transmitted by the remote UE and received by the relay UE. The remote UE may determine a sidelink pathloss between the remote UE and the relay UE based at least on the first information and/or the second information. The remote UE may select/reselect a relay UE based on corresponding pathlosses determined for the respective paths between the remote UE and different respective relay UEs.