公开(公告)号：US20230032220A1

公开(公告)日：2023-02-02

申请号：US17442778

申请日：2020-04-01

Applicant: Apple Inc.

Inventor： Shu Guo ,  Xiangying Yang ,  Yuqin Chen ,  Fangli Xu ,  Zhibin Wu ,  Dawei Zhang ,  Huarui Liang ,  Haijing Hu

IPC: H04W12/08

Abstract: Techniques discussed herein can facilitate improved security establishment procedures for Vehicle to Everything (V2X) direct connections. Various embodiments are employable at or comprise User Equipment, and can initiate and/or receive V2X security establishment connections wherein a receiving UE can reject the connection based on the initiating UE's capabilities/policy and/or the initiating UE can make the final decision regarding the connection based at least on receiving security policy and capability information from the receiving UE.

公开(公告)号：US11546968B2

公开(公告)日：2023-01-03

申请号：US16968846

申请日：2019-08-15

Applicant: Apple Inc.

Inventor： Wei Zhang ,  Fangli Xu ,  Haitong Sun ,  Sriram Subramanian ,  Vishwanth Kamala Govindaraju ,  Johnson O. Sebeni ,  Dawei Zhang ,  Hong He ,  Yuchul Kim ,  Haijing Hu ,  Yuqin Chen ,  Wei Zeng ,  Sanjeevi Balasubramanian ,  Sandeep K. Sunkesala ,  Tarakkumar G. Dhanani ,  Madhukar K. Shanbhag ,  Shiva Krishna Narra ,  Longda Xing ,  Srinivasan Nimmala ,  Sree Ram Kodali ,  Murtaza A. Shikari ,  Sethuraman Gurumoorthy ,  Srirang A. Lovlekar ,  Xu Ou

IPC: H04W4/00 ,  H04W88/10 ,  H04W88/02 ,  H04W76/15 ,  H04W24/08 ,  H04W72/04 ,  H04W76/27

Abstract: A user equipment (UE) device may reside in a state of dual connectivity with a master cell group (MCG) and a secondary cell group (SCG), wherein the radio access technologies of the MCG and the SCG are different. While in the dual connectivity state, the UE device may transition to a mode of reduced activity (e.g., processing and/or RF activity) relative to the secondary cell group (SCG) in order to save power, e.g., when traffic flow via the SCG is below a threshold, or when scheduling activity on the SCG is low. Various mechanisms may be employed to reduce activity, e.g., mechanisms such as reduction of beam monitoring, deactivation of secondary cells of the SCG, reduction of number of active antenna elements, employment of longer periods for periodic measurement and reporting processes, etc.

公开(公告)号：US20220417972A1

公开(公告)日：2022-12-29

申请号：US17438214

申请日：2021-06-25

Applicant: Apple Inc.

Inventor： Ralf Rossbach ,  Fangli Xu ,  Sarma V. Vangala ,  Haijing Hu ,  Weidong Yang ,  Lakshmi Iyer ,  Sabine Roessel

IPC: H04W72/12

Abstract: An application layer in a device, a service data adaptation protocol (SDAP) layer in the device, and/or a media access control (MAC) layer in the device may determine that wireless communication resources allocated to the device need to be adjusted. The determination may be in response to detecting that a quality of the wireless connection of the device has deteriorated, or it may be based on advance knowledge of information pertaining to an application layer payload in the device. In response to the determination the device may transmit, in a MAC Control Element (MAC CE) to a base station, a request for an adjustment of the allocated wireless communication resources. The adjustment may lead to a temporary boost of resources for a limited period of time or to a persistent update of the allocated wireless communication resources. To allow better scheduling of multiple QoS flows mapped to the same DRB and better selection of data when constructing a MAC Packet Data Unit (PDU), a mapping between QoS flows and LCHs may also be provided to the MAC layer.

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：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：US20220312460A1

公开(公告)日：2022-09-29

申请号：US17437382

申请日：2020-08-06

Applicant: Apple Inc.

Inventor： Sarma V. Vangala ,  Tarik Tabet ,  Chunxuan Ye ,  Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Murtaza A. Shikari ,  Naveen Kumar R. Palle Venkata ,  Ralf Rossbach ,  Sreevalsan Vallath ,  Srinivasan Nimmala ,  Wei Zeng

IPC: H04W72/12 ,  H04W72/14 ,  H04W76/19

Abstract: This disclosure relates to techniques for reducing latency in a high-propagation-delay wireless communication system. A base station (BS) may receive from a user equipment (UE) a first buffer status report (BSR) indicating an amount of uplink data buffered by the UE for transmission to the BS, and may subsequently receive a first BSR update message indicating that an additional amount of uplink data has been buffered by the UE subsequent to transmission of the first BSR. The first BSR update message may be received prior to expiration of a timer authorizing transmission of a second BSR following the first BSR. In response, the BS may allocate resources for transmission to the UE, based on the first BSR and the first BSR update message. The BS may provide an uplink grant identifying the allocated resources.

公开(公告)号：US20220312221A1

公开(公告)日：2022-09-29

申请号：US17593508

申请日：2020-10-22

Applicant: APPLE INC.

Inventor： Naveen Kumar R Palle Venkata ,  Alexander Sayenko ,  Anatoliy S. Ioffe ,  Fangli Xu ,  Haijing Hu ,  Leilei Song ,  Ralf Rossbach ,  Ruoheng Liu ,  Sarma V. Vangala ,  Yuqin Chen ,  Zhibin Wu

IPC: H04W16/14 ,  H04W36/14 ,  H04W8/22

Abstract: Embodiments described herein include methods, systems, and apparatuses for allowing a user equipment (UE) that supports dynamic spectrum sharing (DSS) with uplink (UL)-shift to access a cell and barring UEs that do not support DSS with UL-shift Embodiments may use a cell barring field in a master information block and additional filters to indicate a barring state for a network node.

公开(公告)号：US20220304062A1

公开(公告)日：2022-09-22

申请号：US17437808

申请日：2020-08-05

Applicant: Apple Inc.

Inventor： Sarma V. Vangala ,  Tarik Tabet ,  Chunxuan Ye ,  Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Murtaza A Shikari ,  Naveen Kumar R Palle Venkata ,  Rafael L Rivera-Barreto ,  Ralf Rossbach ,  Sreevalsan Vallath ,  Srinivasan Nimmala ,  Wei Zeng ,  Yuqin Chen ,  Zhibin Wu

IPC: H04W74/08 ,  H04W74/00 ,  H04W24/08

Abstract: A base station may operate in a context where the propagation delay between the base station and user equipment (UE) devices is large. The base station configures UE devices with a common delay. The base station receives a random access preamble from a UE device. The base station determines a time slot in which the random access preamble was transmitted, based on a configured correspondence between allowable time slots and subsets of an available set of preambles. The base station computes a Random Access Radio Network Temporary Identifier (RA-RNTI) based on parameter values including an index, of the determined time slot. The base station employs the computed RA-RNTI to address a random access response for the UE device.