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：US20220303942A1

公开(公告)日：2022-09-22

申请号：US17442081

申请日：2020-07-21

Applicant: Apple Inc.

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

IPC: H04W68/00 ,  H04W76/20 ,  H04W76/10

Abstract: This disclosure relates to techniques for performing paging forwarding for remote wireless devices in a wireless communication system. A relay wireless device and a remote wireless device may establish a relay link. The relay wireless device may provide an indication of the relay link between the relay wireless device and the remote wireless device to a cellular base station. The relay wireless device may receive paging information for the remote wireless device from the cellular base station. The relay wireless device may provide the paging information to the remote wireless device via the relay link between the relay wireless device and the remote wireless device.

公开(公告)号：US20220303820A1

公开(公告)日：2022-09-22

申请号：US17442104

申请日：2020-07-24

Applicant: Apple Inc.

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

IPC: H04W28/02 ,  H04W40/22 ,  H04L47/24 ,  H04L47/34

Abstract: This disclosure relates to techniques for providing bearer configuration information for relay communication by a relay wireless device in communication with one or more remote wireless devices in a wireless communication system. A network may provide bearer configuration information to the wireless devices to establish one or more bearers for data forwarding. Based on the bearer configuration information, the relay wireless device may forward data to/from the remote wireless device(s) using the bearer(s).

公开(公告)号：US20220279583A1

公开(公告)日：2022-09-01

申请号：US17040437

申请日：2019-09-29

Applicant: Apple Inc.

Inventor： Chunhai Yao ,  Clive E. Rodgers ,  Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Haitong Sun ,  Wei Zeng ,  Yuqin Chen ,  Yushu Zhang ,  Zhibin Wu

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/12

Abstract: A wireless user equipment (UE) device may transmit a random access preamble to a base station, using a physical resource on an uplink signal. After failing to receive an initial transmission of a response message from the base station (BS), the UE device may monitor for one or more retransmissions of the response message. Each of the retransmission may include a corresponding transmission number. As an alternative, each of the retransmissions may be at least partially scrambled using a corresponding Radio Network Temporary Identifier (RNTI). As another alternative, a window for monitoring and RNTI calculation may be extended to include the one or more retransmissions. The successive retransmissions may include the same set of UE-specific payloads, or, a decreasing set of payloads over time as UE devices acknowledge successful receipt of their respective payloads.

公开(公告)号：US20220264404A1

公开(公告)日：2022-08-18

申请号：US17437803

申请日：2021-01-12

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: H04W36/08 ,  H04W74/08 ,  H04W74/04

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 a master cell group (MCG). The wireless device may receive signaling from the first base station configuring a second base station in a secondary cell group (SCG). The wireless device may establish communication with the second base station based on the signaling received from the first base station. At a first time, the wireless device may set the second base station in a deactivated state based on the signaling from the first base station configuring the second base station or establishing communication with the second base station. At a later time, the wireless device may set the second base station in an activated state and communicate with the first base station and the second base station.

公开(公告)号：US20220256490A1

公开(公告)日：2022-08-11

申请号：US17731578

申请日：2022-04-28

Applicant: Apple Inc.

Inventor： Yuqin Chen ,  Haijing Hu ,  Fangli Xu ,  Dawei Zhang

IPC: H04W56/00 ,  H04W72/12 ,  H04W74/08

Abstract: Techniques are disclosed relating to reporting channel state information (CSI) when synchronization state is altered. In some embodiments, a UE starts a timing alignment timer (TAT) in response to a time alignment command (TAC) from a cellular network for one or more serving cells. In some embodiments, the UE stores a configuration for a semi-persistent (SP) channel state information (CSI) report for the apparatus over a physical uplink shared channel (PUSCH). In some embodiments, the UE activates the SP-CSI report based on downlink control information (DCI) from the network. In some embodiments, the UE transmits one or more SP-CSI reports according to the configuration. In some embodiments, in response to expiration of the TAT, the UE deactivates all active stored configurations of SP-CSI reports that use the PUSCH and that correspond to the one or more serving cells. In some embodiments, this may avoid collisions with PUSCH transmissions from other UEs, e.g., when the UE returns to an in-sync state.

公开(公告)号：US11330538B2

公开(公告)日：2022-05-10

申请号：US16345397

申请日：2018-05-10

Applicant: Apple Inc.

Inventor： Yuqin Chen ,  Haijing Hu ,  Fangli Xu ,  Dawei Zhang

IPC: H04W56/00 ,  H04W72/12 ,  H04W74/08

Abstract: Techniques are disclosed relating to reporting channel state information (CSI) when synchronization state is altered. In some embodiments, a UE starts a timing alignment timer (TAT) in response to a time alignment command (TAC) from a cellular network for one or more serving cells. In some embodiments, the UE stores a configuration for a semi-persistent (SP) channel state information (CSI) report for the apparatus over a physical uplink shared channel (PUSCH). In some embodiments, the UE activates the SP-CSI report based on downlink control information (DCI) from the network. In some embodiments, the UE transmits one or more SP-CSI reports according to the configuration. In some embodiments, in response to expiration of the TAT, the UE deactivates all active stored configurations of SP-CSI reports that use the PUSCH and that correspond to the one or more serving cells. In some embodiments, this may avoid collisions with PUSCH transmissions from other UEs, e.g., when the UE returns to an in-sync state.

公开(公告)号：US11317375B2

公开(公告)日：2022-04-26

申请号：US16892031

申请日：2020-06-03

Applicant: Apple Inc.

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

IPC: H04W68/02 ,  H04W72/12 ,  H04W88/06

Abstract: This disclosure relates to systems, apparatuses, and methods for coordinating communication and avoiding and/or mitigating collisions for multi-subscriber identity module devices in a wireless communication system. A wireless device may coordinate communication associated with different subscriber identity modules and/or may mitigate collisions between communications associated with different subscriber identity modules. A network may provide information to improve coordination and/or mitigate collisions. A network may adjust paging schedules and/or provision of alert messages to improve coordination.

公开(公告)号：US20220124866A1

公开(公告)日：2022-04-21

申请号：US17562685

申请日：2021-12-27

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 ,  H04L69/28

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

公开(公告)号：US11284428B2

公开(公告)日：2022-03-22

申请号：US16499178

申请日：2018-08-10

Applicant: Apple Inc.

Inventor： Junsung Lim ,  Wei Zhang ,  Sami M. Almalfouh ,  Johnson O. Sebeni ,  Yuchul Kim ,  Wei Zeng ,  Haitong Sun ,  Pengkai Zhao ,  Ping Wang ,  Dawei Zhang ,  Fangli Xu ,  Yuqin Chen ,  Haijing Hu

IPC: H04W72/12 ,  H04L5/00 ,  H04W52/02

Abstract: A device may monitor a first search space (SS) corresponding to an active first component carrier (CC), and detect first control information (CI) that identifies an inactive second CC. In response to receiving the first CI, the device may activate the inactive second CC to make it an active second CC. The device may also set up a second SS corresponding to the active second CC, and may monitor the second SS to schedule the active second CC and receive a physical data channel. The first CI may also include additional scheduling information and a start time for reception of the physical data channel. The device may operate in a first bandwidth part (BWP) according to a first communication configuration associated with the first bandwidth part, and may switch to operating in a second BWP and to operating according to a second communication configuration associated with the second BWP.