公开(公告)号：US11991562B2

公开(公告)日：2024-05-21

申请号：US17438353

申请日：2020-10-29

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Haijing Hu ,  Naveen Kumar R. Palle Venkata ,  Ralf Rossbach ,  Sarma V. Vangala ,  Sethuraman Gurumoorthy ,  Srinivasan Nimmala ,  Sudeep Manithara Vamanan ,  Yuqin Chen

IPC: H04W36/00 ,  H04W4/06 ,  H04W36/02 ,  H04W36/08

CPC classification number: H04W36/0007 ,  H04W4/06 ,  H04W36/0235 ,  H04W36/08

Abstract: Techniques are described for improving service continuity for Multicast and Broadcast Services (MBS) communications during handover. Techniques are included for supporting lossless handover and data forwarding during handover for peer-to-multiple (PTM) MBS transmission. Lossless handover may be achieved in part by the user equipment (UE) providing to the target base station an indication of the next packet of the MBS session to be received following an RRC reconfiguration message, and an indication of any MBS packets provided by the source base station prior to the RRC reconfiguration message that were not properly received by the UE. Data forwarding may be performed from the source base station to the target base station if the MBS session was not configured on the target base station prior to the handover. Data forwarding may be omitted if the MBS session was configured on the target base station prior to the handover.

公开(公告)号：US11943722B2

公开(公告)日：2024-03-26

申请号：US17439451

申请日：2021-03-31

Applicant: Apple Inc.

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

IPC: H04W56/00 ,  H04W24/08 ,  H04W74/08 ,  H04W76/15

CPC classification number: H04W56/0005 ,  H04W24/08 ,  H04W74/0833 ,  H04W76/15

Abstract: Aspects are presented herein of apparatuses, systems, and methods for secondary cell group (SCG) addition. A wireless device may establish communication with a first base station that is comprised in a master cell group (MCG) and a second base station that is comprised in the SCG. The wireless device may maintain timing advance (TA) parameters for performing uplink communication with the second base station. The wireless device may perform a plurality of signal quality measurements after receiving an indication to deactivate the SCG. The wireless device may determine whether to reuse the TA parameters for communicating with the second base station after receiving an indication. The determination may be based on comparing one or more signal quality measurements of the second base station to one or more signal quality thresholds.

公开(公告)号：US20230268984A1

公开(公告)日：2023-08-24

申请号：US17440865

申请日：2020-10-22

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Sarma V. Vangala ,  Chunxuan Ye ,  Haijing Hu ,  Krisztian Kiss ,  Murtaza A. Shikari ,  Naveen Kumar R. Palle Venkata ,  Ralf Rossbach ,  Sree Ram V. Kodali ,  Srinivasan Nimmala ,  Vijay Venkataraman ,  Yuqin Chen ,  Zhibin Wu

IPC: H04B7/185 ,  H04W48/16 ,  H04W48/20

CPC classification number: H04B7/1851 ,  H04W48/16 ,  H04W48/20

Abstract: Systems, methods, and devices are provided for performing cell selection or reselection in networks that include earth moving beams. In one example, a method includes receiving, via a satellite, control information transmitted by a base station indicating that a beam associated with a cell ID has been redirected; in response, measuring a beam strength of the redirected beam; and performing cell re-selection based on the measured beam strength.

公开(公告)号：US20230261738A1

公开(公告)日：2023-08-17

申请号：US17441093

申请日：2020-11-03

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Sarma V. Vangala ,  Chunxuan Ye ,  Haijing Hu ,  Krisztian Kiss ,  Murtaza A. Shikari ,  Naveen Kumar R. Palle Venkata ,  Ralf Rossbach ,  Sree Ram Kodali ,  Srinivasan Nimmala ,  Vijay Venkataraman ,  Yuqin Chen ,  Zhibin Wu

IPC: H04B7/185 ,  H04W48/16 ,  H04W68/02

CPC classification number: H04B7/18519 ,  H04W48/16 ,  H04W68/02 ,  H04W84/06

Abstract: Techniques discussed herein may enable effective cell identification and paging within a non-terrestrial network (NTN). A base station may map logical cell identifiers, corresponding to satellites, to physical cell identifiers, corresponding to physical or geographic cells. The techniques enable cell identification and paging in both Earth-fixed cell scenarios and Earth-moving cell scenarios, and in scenarios where the satellite moves between countries.

公开(公告)号：US20230076746A1

公开(公告)日：2023-03-09

申请号：US17871865

申请日：2022-07-22

Applicant: Apple Inc.

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

IPC: H04W36/32 ,  H04W36/00

Abstract: The present application relates to devices and components including apparatus, systems, and methods for control-plane signaling for UE associations in wireless networks.

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：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：US20220303730A1

公开(公告)日：2022-09-22

申请号：US17437826

申请日：2020-10-22

Applicant: Apple Inc.

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

IPC: H04W4/06 ,  H04W76/10 ,  H04L1/16

Abstract: This disclosure relates to techniques for supporting switching between point to point and point to multipoint delivery with service continuity for broadcast and multicast services in a wireless communication system. A cellular base station and a wireless device may establish a wireless link. The cellular base station may provide information configuring an over the air delivery type with which to receive a broadcast or multicast service, which may be received by the wireless device. The cellular base station may transmit the service using the configured delivery type, and the wireless device may correspondingly receive the service. The cellular base station may provide information configuring the wireless device to switch to a different over the air delivery type, with service continuity. The cellular base station may then transmit the service using that delivery type, and the wireless device may correspondingly receive the service.

公开(公告)号：US20250150218A1

公开(公告)日：2025-05-08

申请号：US19011771

申请日：2025-01-07

Applicant: Apple Inc.

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

IPC: H04L1/1829 ,  H04L1/1825 ,  H04W84/06

Abstract: Techniques, described herein, include solutions for managing hybrid automatic repeat request (HARQ) processes and communications for non-terrestrial networks (NTNs) (e.g., a wireless communication network that includes a satellite network component). A user equipment (UE) may receive a request for capability information of the UE and in response, transmit a message indicating the capability information of the UE, wherein the capability information includes HARQ disablement information indicating whether the UE supports disabled HARQ feedback.

公开(公告)号：US12253611B2

公开(公告)日：2025-03-18

申请号：US17438324

申请日：2021-08-04

Applicant: Apple Inc.

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

IPC: G01S19/25 ,  H04M15/00 ,  H04W76/20 ,  H04W84/04 ,  H04W84/06

Abstract: The present application relates to devices and components including apparatus, systems, and methods for ephemeris signaling in wireless networks.