公开(公告)号：US20240032139A1

公开(公告)日：2024-01-25

申请号：US17593697

申请日：2021-08-04

Applicant: APPLE INC.

Inventor： Pavan Nuggehalli ,  Alexander Sirotkin ,  Fangli Xu ,  Haijing Hu ,  Naveen Kumar R Palle Venkata ,  Ralf Rossbach ,  Sarma V. Vangala ,  Sethuraman Gurumoorthy ,  Yuqin Chen ,  Zhibin Wu

IPC: H04W76/28 ,  H04W52/02

CPC classification number: H04W76/28 ,  H04W52/0225

Abstract: The functions of user equipment (UE), radio access network (RAN) devices, and core network (CN) devices in circumstances where a UE is expected to experience discontinuous coverage are described herein. A UE may send a CN a non-access stratum (NAS) message including a release request indicating that a UE is leaving coverage and assistance information. The CN may interrupt paging of the UE and resume the paging according to the assistance information. A UE may enter a low power usage mode upon leaving coverage, and may use one or more timers to determine when to check for coverage and send a mobility update message corresponding to the low power usage mode. A base station may receive, from a UE, a radio resource control (RRC) message comprising a release request and assistance information, send an RRC release message to the UE in response, and forward the assistance information to the CN.

公开(公告)号：US20230027953A1

公开(公告)日：2023-01-26

申请号：US17859863

申请日：2022-07-07

Applicant: Apple Inc.

Inventor： Naveen Kumar R Palle Venkata ,  Hong He ,  Jie Cui ,  Haijing Hu ,  Dawei Zhang ,  Wei Zeng

IPC: H04W48/02 ,  H04W48/08 ,  H04W8/22

Abstract: Improved network configuration options enable reduced capability (Redcap) devices to coexist with legacy devices. A master information block (MIB) cellBarred indication received in a Synchronization System Block (SSB) by a Redcap device may be ignored by the Redcap device, which may read a System Information Block1 (SIB1) to determine whether to connect to the cell defined by the received SSB. The Redcap device may consider the cell barred if the SIB1 includes a cellBarred indication targeting Redcap devices. The Redcap device may alternately search for an alternative SSB indicated by the SIB1 to determine whether to connect to the cell defined by the alternative SSB. A network node may broadcast Redcap specific and legacy specific SSBs at the same frequency location in a time-multiplexed manner, with each type of device determining cell access based on the received specific SSB. The network node may transmit SSB bursts specifically targeting Redcap devices.

公开(公告)号：US20220322446A1

公开(公告)日：2022-10-06

申请号：US17437394

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: H04W74/08 ,  H04W74/00 ,  H04W28/02 ,  H04W72/14

Abstract: This disclosure relates to techniques for reducing latency in a high-propagation-delay wireless communication system. A base station may receive from user equipment device (UE) a random access initiation message, having a characteristic that is configured to indicate to the base station a requested size of a subsequent uplink grant to be provided by the base station for transmission of uplink data by the UE. For example, the characteristic may include a predetermined preamble included in the random access initiation message, such that a requested grant size is indicated by which preamble the UE selects from a plurality of possible preambles. As another example, the characteristic may include which RACH occasion is selected by the UE to transmit the random access initiation message. In response, the base station may allocate resources for use by the UE based on the characteristic.

公开(公告)号：US20220312261A1

公开(公告)日：2022-09-29

申请号：US17437397

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: H04W28/02 ,  H04W72/12

Abstract: This disclosure relates to techniques for reducing latency in a high-propagation-delay wireless communication system. A user equipment device (UE) may transmit to a base station (BS) a first buffer status report (BSR) indicating an amount of uplink data buffered by the UE for transmission to the BS, and may subsequently transmit to the BS 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 transmitted prior to expiration of a timer authorizing transmission of a second BSR following the first BSR. The UE may receive from the BS an uplink grant allocating resources for transmission of at least a portion of the uplink data buffered by the UE. The uplink grant may have a size based on the first BSR and the first BSR update message.

公开(公告)号：US12302226B2

公开(公告)日：2025-05-13

申请号：US17766546

申请日：2021-05-08

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Zhibin Wu ,  Yuqin Chen ,  Sarma V Vangala ,  Naveen Kumar R Palle Venkata ,  Sethuraman Gurumoorthy ,  Srirang A Lovlekar ,  Haijing Hu ,  Dawei Zhang

IPC: H04W48/16 ,  H04W76/20

Abstract: A user equipment (UE) configured as a relay UE between a remote UE and a base station is disclosed. The UE comprises one or more processors configured to receive a RRC signaling to request for establishing or resuming RRC connection from the remote UE, determine whether to perform an access control check prior to forwarding the RRC Signaling of the remote UE to the base station, and forward the RRC Signaling to the base station based on the determination.

公开(公告)号：US12231942B2

公开(公告)日：2025-02-18

申请号：US18494423

申请日：2023-10-25

Applicant: APPLE INC.

Inventor： Fangli Xu ,  Dawei Zhang ,  Haijing Hu ,  Naveen Kumar R Palle Venkata ,  Ralf Rossbach ,  Sarma V. Vangala ,  Sethuraman Gurumoorthy ,  Srirang A. Lovlekar ,  Yuqin Chen ,  Zhibin Wu

IPC: H04W24/10 ,  H04W74/0833 ,  H04W76/28

Abstract: Systems and methods for performing measurements of one or more cells during an small data transmission (SDT) procedure between a user equipment (UE) and a network when the UE is in a radio resource control (RRC) INACTIVE state are described herein. Beam and/or cell measurements taken during an SDT measurement period of the SDT procedure may be used to determine one or more respective cell qualities, among other possibilities. Beginnings and endings of the SDT measurement period, and the manner (timing) for taking measurements within the SDT measurement period, are also described. The cell qualities so determined can then be used to monitor, during the SDT measurement period, for a measurement event, which causes the UE to send a measurement report to the network having data determined using those cell qualities, and/or to send messaging intended to induce the network to change the RRC state of the UE.

公开(公告)号：US20250048486A1

公开(公告)日：2025-02-06

申请号：US18748507

申请日：2024-06-20

Applicant: APPLE INC.

Inventor： Fangli Xu ,  Yuqin Chen ,  Ralf Rossbach ,  Naveen Kumar R Palle Venkata ,  Peng Cheng ,  Zhibin Wu ,  Ping-Heng Kuo ,  Haijing Hu

IPC: H04W76/27 ,  H04W76/40

Abstract: Systems and methods for multicast data traffic service continuity under multicast-broadcast services (MBS) operation during a radio resource control (RRC) state or mode transition are described. In some embodiments, a user equipment (UE) receives, from a network, while in an RRC connected mode, an RRC release message comprising an RRC inactive mode point to multipoint (PTM) configuration that uses an MBS session to receive multicast data traffic while the UE is in an RRC inactive mode; enters the RRC inactive mode from the RRC connected mode in response to the RRC release message; and uses the RRC inactive mode PTM configuration to receive, from the network, the multicast data traffic of the MBS session while the UE is in the RRC inactive mode. Cases where a UE instead re-uses an RRC connected mode PTM configuration after transitioning to the RRC inactive mode are also described. Analogous network behaviors are described.

公开(公告)号：US12185160B2

公开(公告)日：2024-12-31

申请号：US17437397

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: H04W28/02 ,  H04W72/21 ,  H04W72/23

Abstract: This disclosure relates to techniques for reducing latency in a high-propagation-delay wireless communication system. A user equipment device (UE) may transmit to abase station (BS) a first buffer status report (BSR) indicating an amount of uplink data buffered by the UE for transmission to the BS, and may subsequently transmit to the BS 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 transmitted prior to expiration of a timer authorizing transmission of a second BSR following the first BSR. The UE may receive from the BS an uplink grant allocating resources for transmission of at least a portion of the uplink data buffered by the UE. The uplink grant may have a size based on the first BSR and the first BSR update message.

公开(公告)号：US12120531B2

公开(公告)日：2024-10-15

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 ,  H04W8/22 ,  H04W36/14 ,  H04W88/06

CPC classification number: H04W16/14 ,  H04W8/22 ,  H04W36/14 ,  H04W88/06

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：US12069695B2

公开(公告)日：2024-08-20

申请号：US17438271

申请日：2021-07-29

Applicant: Apple Inc.

Inventor： Naveen Kumar R Palle Venkata ,  Haijing Hu ,  Fangli Xu ,  Dawei Zhang ,  Yuqin Chen ,  Jie Cui

IPC: H04W72/232 ,  H04L5/00 ,  H04W74/0833

CPC classification number: H04W72/232 ,  H04L5/0053 ,  H04W74/0833

Abstract: This disclosure relates to techniques for physical downlink control channel handling when a secondary cell group is activated in a wireless communication system. A wireless device may establish a wireless link with a master cell group. A secondary cell group may be configured. The wireless device may receive an indication to activate the secondary cell group without performing a random access channel procedure on the secondary cell group. The wireless device may determine quasi-co-located information for a physical downlink control channel of the secondary cell group. The wireless device may perform physical downlink control channel decoding for the physical downlink control channel of the secondary cell group using the determined quasi-co-located information.