公开(公告)号：US12052764B2

公开(公告)日：2024-07-30

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: H04W74/0833 ,  H04W28/02 ,  H04W72/23 ,  H04W74/00

CPC classification number: H04W74/0833 ,  H04W28/0278 ,  H04W72/23 ,  H04W74/004

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：US20240049000A1

公开(公告)日：2024-02-08

申请号：US17593291

申请日：2021-06-28

Applicant: APPLE INC.

Inventor： Sarma V. Vangala ,  Sudeep Manithara Vamanan ,  Fangli Xu ,  Haijing Hu ,  Krisztian Kiss ,  Mona Agnel ,  Naveen Kumar R Palle Venkata ,  Ralf Rossbach ,  Sethuraman Gurumoorthy ,  Yuqin Chen ,  Zhibin Wu

IPC: H04W16/28

CPC classification number: H04W16/28 ,  H04W80/06

Abstract: Systems and methods for using integrated access and backhaul (IAB) nodes configured to provide multi-access edge computing (MEC) functionality are disclosed herein. An TAB node includes a distributed unit (DU) having a local application instance of a MEC-enabled application. The local application instance is configured for communication with a first user equipment (UE) connected to the TAB node. A mobile termination functionality (MT) of the TAB node uses a packet data convergence protocol (PDCP) layer to transport data of the local application instance between the MT and an IAB donor. Further, data of the local application instance is transported between the UE and the TAB node via one of a variety of methods, including the use of a second PDCP layer at the DU (and optionally the use of service data adaptation protocol (SDAP) layers at each of the DU and the MT), and/or via sidelink.

公开(公告)号：US20230269749A1

公开(公告)日：2023-08-24

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 ,  H04W74/08

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.

公开(公告)号：US20230217288A1

公开(公告)日：2023-07-06

申请号：US17593227

申请日：2021-04-01

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 ,  H04W74/08 ,  H04W76/28

CPC classification number: 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：US20230180336A1

公开(公告)日：2023-06-08

申请号：US17593691

申请日：2021-01-14

Applicant: APPLE INC.

Inventor： Srirang A. Lovlekar ,  Ahmed Mohamed Ibrahim Hassan ,  Amr Mostafa ,  Birgit Breining ,  Fangli Xu ,  Haijing Hu ,  Naveen Kumar R Palle Venkata ,  Sethuraman Gurumoorthy ,  Yuqin Chen

IPC: H04W76/20 ,  H04W36/00

CPC classification number: H04W76/20 ,  H04W36/00837

Abstract: Coordinated leaving for a UE having a first SIM and a second SIM may include decoding, at a baseband processor, an RRC reconfiguration message associated with the first SIM received from a first network. A communication corresponding to the second SIM received from a second network is decoded while the baseband processor is processing the received RRC reconfiguration message. The communication received from the second network is determined to comprise a higher priority than the RRC reconfiguration procedure. Based on determining, a UAI message corresponding to the first SIM is encoded by the baseband processor for transmission to the first network. The UM message is configured to inform the first network of coordinated leaving and abortion of the RRC reconfiguration procedure. The first SIM is transitioned to an idle mode. An RRC request corresponding to the second SIM is encoded by the baseband processor for transmission to the second network.

公开(公告)号：US20230180218A1

公开(公告)日：2023-06-08

申请号：US17593524

申请日：2021-01-14

Applicant: APPLE INC.

Inventor： Srirang A. Lovlekar ,  Ahmed Mohamed Ibrahim Hassan ,  Amr Mostafa ,  Birgit Breining ,  Fangli Xu ,  Haijing Hu ,  Naveen Kumar R Palle Venkata ,  Sethuraman Gurumoorthy ,  Yuqin Chen

IPC: H04W72/1268 ,  H04W8/22 ,  H04W76/19

CPC classification number: H04W72/1268 ,  H04W8/22 ,  H04W76/19 ,  H04W88/06

Abstract: Determining RRC processing delays for multi-subscriber identify module (MSIM) user equipments (UEs) may include decoding a capabilities message from a UE that indicates the UE is an MSIM UE that includes at least a first SIM and a second SIM. A communication for the first SIM of the UE may be encoded. The communication may be configured to cause the UE to perform a radio resource control (RRC) procedure. A transmission request received from the UE may be decoded. The transmission request may be associated with the RRC procedure. In response to receiving the transmission request, an uplink (UL) gram may be scheduled for the first SIM of the UE.

公开(公告)号：US20220312489A1

公开(公告)日：2022-09-29

申请号：US17437367

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 ,  H04W72/14 ,  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 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：US20220304063A1

公开(公告)日：2022-09-22

申请号：US17437819

申请日：2020-08-05

Applicant: Apple Inc

Inventor： Sarma V. Vangala ,  Tarik Tabet ,  Chunxuan Ye ,  Dawei Zhang ,  Fangli Xu ,  Haijing Hu 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 ,  H04W56/00

Abstract: A user equipment (UE) device may perform random access to a base station in the context where propagation delay between the base station and the UE device is large. The UE device randomly selects a random access preamble from an available set of preambles. The UE device selects a time slot for transmission of the random access preamble based on a configured correspondence between allowable time slots and subsets of the available set. The UE device transmits the random access preamble to a base station in the selected time slot, with timing advance to compensate for a common delay. Thus, the base station, knowing the configured correspondence, is able to determine the time slot in which the random access preamble was transmitted. The UE device receives a random access response that has been addressed with a Random Access Radio Network Temporary Identifier (RA-RNTI).

公开(公告)号：US12289645B2

公开(公告)日：2025-04-29

申请号：US17598093

申请日：2021-01-28

Applicant: Apple Inc.

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

IPC: H04W36/00

Abstract: Methods and systems are disclosed for a UE of a wireless communication network to recover from MCG radio link failures in a MR-DC system when the SCG is deactivated or otherwise not enabled. When a MCG link failure is detected and the SCG is deactivated, the UE may activate the SCG for the UE to use the SCG link to transmit and receive signaling messages or data as part of the MCG failure recovery procedure. When the MCG link failure is detected and the UE is configured to add the SCG upon the satisfaction of certain condition, but the condition has not occurred, the UE may check to determine whether one condition is MCG failure and whether the radio link quality of the SCG exceeds a threshold. If the radio link quality of the SCG exceeds the threshold, the UE may apply the SCG configuration to add the SCG.

公开(公告)号：US20250081072A1

公开(公告)日：2025-03-06

申请号：US18724385

申请日：2022-01-05

Applicant: Apple Inc.

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

IPC: H04W36/32 ,  H04W36/08 ,  H04W84/06

Abstract: A user equipment (UE) may receive a downlink message from a non-terrestrial network (NTN) which may include one or more sets of terrestrial network (TN) cell reselection information. The one or more sets of TN cell reselection information may further include location information corresponding to one or more cells of the TN. The UE may determine its location and, in response to receiving the downlink message, compare its location to the location information corresponding to the one or more cells of the TN. The UE may then select, based on the comparison, a set of the one or more sets of TN cell reselection information and further perform a cell reselection procedure based on the selection.