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：US20220256353A1

公开(公告)日：2022-08-11

申请号：US17732279

申请日：2022-04-28

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Dawei Zhang ,  Haijing Hu ,  Longda Xing ,  Murtaza A. Shikari ,  Sethuraman Gurumoorthy ,  Sree Ram Kodali ,  Srinivasan Nimmala ,  Srirang A. Lovlekar ,  Xu Ou ,  Yuqin Chen

IPC: H04W16/14 ,  H04L5/00 ,  H04W8/24 ,  H04W76/30 ,  H04W88/06 ,  H04W76/11

Abstract: Apparatuses, systems, and methods for a wireless device to perform methods to implement mechanisms for non-stand-alone unlicensed band cells that support single carrier capable UEs. A UE may camp on a licensed band cell of a RAN and transmit a request to connect. The UE may receive, from the licensed band cell, a connection setup message indicating a switch to an unlicensed band cell of the RAN and receive, from the unlicensed band cell, a reference signal. The UE may transmit to the unlicensed band cell and in response to confirming, based at least in part of the reference signal, radio quality and/or downlink timing of the unlicensed band cell, a connection complete/connection resume message.

公开(公告)号：US11356842B2

公开(公告)日：2022-06-07

申请号：US16923835

申请日：2020-07-08

Applicant: Apple Inc.

Inventor： Srirang A. Lovlekar ,  Sethuraman Gurumoorthy ,  Murtaza A. Shikari ,  Srinivasan Nimmala ,  Sree Ram Kodali ,  Fangli Xu ,  Haijing Hu ,  Yuqin Chen ,  Dawei Zhang ,  Longda Xing ,  Zhiwei Wang ,  Yaoqi Yan ,  Muthukumaran Dhanapal ,  Huarui Liang

IPC: H04W48/18 ,  H04W8/18 ,  H04W88/06 ,  H04W12/72

Abstract: A user equipment (UE) includes first and second subscriber identity modules (SIMs), possibly subscribed to different carriers. When the first SIM is in a connected state and the second SIM is in an idle state, the UE may need to periodically tune away a radio from a first frequency used for communication under the first SIM to a second frequency used for idle mode activity under the second SIM. The UE may provide to the network of the first SIM the second SIMs traffic activity pattern and/or serving frequency so that the network may provide coordinated configuration and/or scheduling for the UE device, e.g., in order to make the action of tuning away (and tuning back) the radio more efficient and/or to decrease the network impact of such radio tune aways (e.g., to decrease wasted uplink scheduling and wasted downlink transmissions for the first SIM).

公开(公告)号：US11350260B2

公开(公告)日：2022-05-31

申请号：US16500846

申请日：2018-08-07

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Haijing Hu ,  Dawei Zhang ,  Yuqin Chen ,  Srirang A. Lovlekar ,  Xu Ou ,  Sethuraman Gurumoorthy ,  Srinivasan Nimmala ,  Longda Xing ,  Sree Ram Kodali ,  Murtaza A. Shikari

IPC: H04W4/90 ,  H04W4/12 ,  H04W68/00

Abstract: This disclosure relates to detecting duplicate public warning system messages in a cellular communication system. A wireless device may receive a public warning system indication from a cellular base station during a paging occasion. The public warning system indication may indicate that system information provided by the cellular base station includes a public warning system message. The wireless device may determine whether the public warning system message is a duplicate public warning system message. The wireless device may determine whether to decode the system information including the public warning system message based at least in part on whether the public warning system message is a duplicate public warning system message. The system information including the public warning system message may not be decoded if the public warning system message is determined to be a duplicate public warning system message.

公开(公告)号：US11252778B2

公开(公告)日：2022-02-15

申请号：US16918164

申请日：2020-07-01

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Haijing Hu ,  Dawei Zhang ,  Longda Xing ,  Murtaza A. Shikari ,  Sethuraman Gurumoorthy ,  Sree Ram Kodali ,  Srinivasan Nimmala ,  Srirang A. Lovlekar ,  Xu Ou ,  Yuqin Chen

IPC: H04W76/27 ,  H04W76/10 ,  H04W68/00 ,  H04W74/08 ,  H04W36/04 ,  H04W36/00 ,  H04L29/06

Abstract: This disclosure relates to performing data communication while in an inactive state in a cellular communication system.

公开(公告)号：US11218924B2

公开(公告)日：2022-01-04

申请号：US16479628

申请日：2018-08-28

Applicant: Apple Inc.

Inventor： Srirang A. Lovlekar ,  Longda Xing ,  Srinivasan Nimmala ,  Dawei Zhang ,  Yuqin Chen ,  Fangli Xu ,  Haijing Hu ,  Sethuraman Gurumoorthy ,  Murtaza A. Shikari

IPC: H04W36/00 ,  H04W12/04 ,  H04W36/02 ,  H04W40/36 ,  H04W36/18

Abstract: Techniques are disclosed relating to handover between cellular base stations. In some embodiments that use dual-connectivity handover, disclosed techniques may facilitate synchronization of a security configuration switch. In some embodiments, the base station and/or mobile device determine activation sequence numbers for the security configuration switch (e.g., by estimating when a path switch will occur). In some embodiments, the security configuration switch is implicitly detected based in deciphering failure. In some embodiments, the security configuration switch is explicitly signaled and is checked based on deciphering failure. In some embodiments that use make before break handover techniques, a source base station may be retained after the path switch.

公开(公告)号：US20210368318A1

公开(公告)日：2021-11-25

申请号：US16500846

申请日：2018-08-07

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Haijing Hu ,  Dawei Zhang ,  Yuqin Chen ,  Srirang A. Lovlekar ,  Xu Ou ,  Sethuraman Gurumoorthy ,  Srinivasan Nimmala ,  Longda Xing ,  Sree Ram Kodali ,  Murtaza A. Shikari

IPC: H04W4/90 ,  H04W4/12 ,  H04W68/00

Abstract: This disclosure relates to detecting duplicate public warning system messages in a cellular communication system. A wireless device may receive a public warning system indication from a cellular base station during a paging occasion. The public warning system indication may indicate that system information provided by the cellular base station includes a public warning system message. The wireless device may determine whether the public warning system message is a duplicate public warning system message. The wireless device may determine whether to decode the system information including the public warning system message based at least in part on whether the public warning system message is a duplicate public warning system message. The system information including the public warning system message may not be decoded if the public warning system message is determined to be a duplicate public warning system message.

公开(公告)号：US20210345455A1

公开(公告)日：2021-11-04

申请号：US16478951

申请日：2018-08-03

Applicant: Apple Inc.

Inventor： Sree Ram Kodali ,  Sethuraman Gurumoorthy ,  Murtaza A. Shikari ,  Haijing Hu ,  Srinivasan Nimmala ,  Yuqin Chen ,  Xu Ou ,  Longda Xing ,  Srirang A. Lovlekar ,  Fangli Xu ,  Dawei Zhang

IPC: H04W88/18 ,  H04W68/00 ,  H04W52/02

Abstract: A device may operate within a specified frequency band within a specified coverage area of a wireless cellular network served by a cell. The device may monitor, during a cell-specific paging window, paging messages transmitted by the cell within the cell-specific paging window to devices operating within the specified coverage area and targeted to receive paging messages. The device may enter an idle state if the monitoring indicates that the paging messages do not include a respective paging message intended for the device. If the monitoring indicates that the paging messages include a paging message intended for the device, the device may process the paging message. Furthermore, the device may indicate to the cell, when attaching to the cell, whether the device has a capability to support standalone operation within the specified frequency band. If the indication is that the device does not support such standalone operation, the cell may not issue paging messages to the device.

公开(公告)号：US11166336B2

公开(公告)日：2021-11-02

申请号：US16264885

申请日：2019-02-01

Applicant: Apple Inc.

Inventor： Sethuraman Gurumoorthy ,  Srirang A. Lovlekar ,  Murtaza A. Shikari ,  Srinivasan Nimmala ,  Haijing Hu ,  Fangli Xu ,  Yuqin Chen ,  Longda Xing ,  Xu Ou ,  Li Su ,  Vijay Venkataraman ,  Dawei Zhang ,  Muthukumaran Dhanapal ,  Sree Ram Kodali ,  Srinivas Burugupalli

IPC: H04W76/27 ,  H04W76/28 ,  H04W76/38

Abstract: This disclosure relates to performing implicit radio resource control state transitions in a cellular communication system. A wireless device may establish a radio resource control (RRC) connection with a cellular base station. A data inactivity timer length and a target RRC state for implicit RRC transitions may be determined. A data inactivity timer having the determined data inactivity timer length may be initiated. It may be determined that the data inactivity timer has expired. The wireless device may transition to the target RRC state based at least in part on determining that the data inactivity timer has expired.

公开(公告)号：US10986491B2

公开(公告)日：2021-04-20

申请号：US16603411

申请日：2017-04-07

Applicant: Apple Inc.

Inventor： Vijay Venkataraman ,  Srinivasan Nimmala ,  An Chan ,  Zhiwei Wang ,  Srirang A. Lovlekar ,  Srinivas Burugupalli

IPC: H04W8/24 ,  H04W76/10 ,  H04W8/08 ,  H04W88/06

Abstract: Method and apparatus for adaptive data collection operations where a first user equipment (UE) is paired to a second UE. The first UE may receive capability data from the second UE, the capability data comprising cellular capabilities of the second UE. The first UE may further collect service history data for the second UE, where the service history data corresponds to the cellular capabilities indicated by the capability data. The first UE may further transmit the service history data to the second UE.