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    USER EQUIPMENT BASED PACKET DATA CONVERGENCE PROTOCOL (PDCP) DUPLICATION ACTIVATION AND DEACTIVATION
    41.
    发明申请
    USER EQUIPMENT BASED PACKET DATA CONVERGENCE PROTOCOL (PDCP) DUPLICATION ACTIVATION AND DEACTIVATION 有权

    公开(公告)号：US20220159514A1

    公开(公告)日：2022-05-19

    申请号：US17438656

    申请日：2020-04-30

    Applicant: Apple Inc.

    Inventor： Yujian Zhang ,  Junaid Ansari ,  Marta Martinez Tarradell

    IPC: H04W28/12 ,  H04W24/08

    Abstract: A process for execution by user equipment (UE) for activation or deactivation of a Radio Link Control (RLC) entity for Packet Data Convergence Protocol (PDCP) duplication includes identifying a set of RLC entities that are configured by a Radio Resource Control (RRC) for communication using PDCP. The process includes, for each RLC entity of the set of RLC entities: determining a network configured offset value; determining a channel condition value; and determining an RLC entity level value based on a combination of the network configured offset value and the channel condition value. The process includes comparing the RLC entity level value for each RLC entity to a threshold value; and based on comparing the RLC entity level value to the threshold value, selecting a subset of RLC entities for PDCP duplication; and activating or deactivating PDCP duplication for the selected subset of RLC entities.

    Low overhead system information acquisition for wireless communication
    42.
    发明授权
    Low overhead system information acquisition for wireless communication 有权

    公开(公告)号：US11197235B2

    公开(公告)日：2021-12-07

    申请号：US16921272

    申请日：2020-07-06

    Applicant: Apple Inc.

    Inventor： Ralf Bendlin ,  Gang Xiong ,  Jong-Kae Fwu ,  Yujian Zhang

    IPC: H04W4/00 ,  H04W48/14 ,  H04W48/10 ,  H04W48/16 ,  H04W74/00

    Abstract: A method for low overhead system information acquisition (LOSIA) is disclosed. The LOSIA method includes several techniques for transmitting common channels in a next generation Radio Access Technology (xRAT). Instead of transmitting system information in a periodic, static, cell-specific, wideband manner, the transmission is triggered by user equipment in an “on demand” manner. The LOSIA method allows the network to control the overhead, bandwidth, and periodicity, as well as other characteristics. The LOSIA method employs several different techniques to trigger the information upon which the network can act, for example, by transmitting different payloads depending on the received trigger.

    Systems, methods and devices for non-adaptive retransmission using semi-persistent scheduling resources
    43.
    发明授权
    Systems, methods and devices for non-adaptive retransmission using semi-persistent scheduling resources 有权

    公开(公告)号：US11096244B2

    公开(公告)日：2021-08-17

    申请号：US16093093

    申请日：2016-12-22

    Applicant: APPLE INC.

    Inventor： Umesh Phuyal ,  Yujian Zhang ,  Youn Hyoung Heo

    IPC: H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04W72/14 ,  H04W76/27 ,  H04W80/02 ,  H04W88/06

    Abstract: Techniques, apparatus and methods are disclosed that enable non-adaptive Hybrid Automatic Repeat Request (HARQ) retransmission using SPS resources. Non-adaptive HARQ retransmission can be enabled in a configured Uplink (UL) resource (such as SPS resources). As it may not be beneficial to allow non-adaptive HARQ retransmission on SPS resources for all kinds of traffic, options for proper configuration can be provided either by network signaling or by predefined configurations. For example, embodiments are described to enable non-adaptive retransmission using SPS resources: Always allow non-adaptive retransmission on configured UL grants; Allow non-adaptive retransmission on configured UL grants only for certain predefined conditions; Allow non-adaptive HARQ retransmissions when there is no data in the UL buffer for new transmission; Enable non-adaptive retransmissions using a configurable boolean parameter; Enable non-adaptive retransmissions using a configurable threshold parameter; and Enable non-adaptive retransmissions using a configuration sent using a system information broadcast.

    PDCP packet-based DDDS frame transmission
    44.
    发明授权
    PDCP packet-based DDDS frame transmission 有权

    公开(公告)号：US11006312B2

    公开(公告)日：2021-05-11

    申请号：US16299389

    申请日：2019-03-12

    Applicant: Apple Inc.

    Inventor： Jaemin Han ,  Yujian Zhang ,  Sudeep K. Palat ,  Alexander Sirotkin

    IPC: H04W28/02 ,  H04W28/04 ,  H04W92/12 ,  H04W88/08 ,  H04W80/02

    Abstract: Systems and methods of providing feedback when a specific PDU is successfully delivered or transmitted are described. The node hosting PDCP entity indicates triggering of a DDDS frame from the remote corresponding node. Rather than immediately triggering transmission of a DDDS frame, the node hosting PDCP entity indicates triggering based on successful delivery of a PDU having a specific SN, as long as in-sequence delivery or transmission of PDUs up to the specific SN was successful. The DDDS frame is transmitted once the corresponding node determines that the PDU having the SN was successfully delivered or transmitted. After reporting by the DDDS frame, the QoS flow associated with the PDUs is remapped from a source DRB to a target DRB.

    LOW OVERHEAD SYSTEM INFORMATION ACQUISITION FOR WIRELESS COMMUNICATION
    46.
    发明申请
    LOW OVERHEAD SYSTEM INFORMATION ACQUISITION FOR WIRELESS COMMUNICATION 审中-公开

    公开(公告)号：US20200374781A1

    公开(公告)日：2020-11-26

    申请号：US16921272

    申请日：2020-07-06

    Applicant: Apple Inc.

    Inventor： Ralf Bendlin ,  Gang Xiong ,  Jong-Kae Fwu ,  Yujian Zhang

    IPC: H04W48/14 ,  H04W48/10 ,  H04W48/16 ,  H04W74/00

    Abstract: A method for low overhead system information acquisition (LOSIA) is disclosed. The LOSIA method includes several techniques for transmitting common channels in a next generation Radio Access Technology (xRAT). Instead of transmitting system information in a periodic, static, cell-specific, wideband manner, the transmission is triggered by user equipment in an “on demand” manner. The LOSIA method allows the network to control the overhead, bandwidth, and periodicity, as well as other characteristics. The LOSIA method employs several different techniques to trigger the information upon which the network can act, for example, by transmitting different payloads depending on the received trigger.

    Apparatus, system and method of communication over common control channels
    50.
    发明授权
    Apparatus, system and method of communication over common control channels 有权

    公开(公告)号：US11737138B2

    公开(公告)日：2023-08-22

    申请号：US16446973

    申请日：2019-06-20

    Applicant: Apple Inc.

    Inventor： Sudeep Palat ,  Yi Guo ,  Yujian Zhang ,  Seau Sian Lim

    IPC: H04W74/08 ,  H04W84/12

    CPC classification number: H04W74/0816 ,  H04W84/12

    Abstract: Some demonstrative embodiments include devices, systems and/or methods of communication over common control channels. For example, an apparatus may include logic and circuitry configured to cause a User Equipment (UE) to determine a selected Common Control Channel (CCCH) message configuration from a first predefined message configuration and a second predefined message configuration, the first predefined message configuration having a first predefined message bit-size, the second predefined message configuration having a second predefined message bit-size; to generate an Uplink (UL) CCCH message according to the selected CCCH message configuration, the UL CCCH message comprising a Medium Access Control (MAC) header comprising a Logical Channel Identify (ID) (LCID) field having a value corresponding to the selected CCCH message configuration; and to transmit the UL CCCH message to a Next Generation Node B (gNB) over a logical channel corresponding to the selected CCCH message configuration.

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