公开(公告)号：US20220159729A1

公开(公告)日：2022-05-19

申请号：US17441185

申请日：2020-03-20

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Yujian Zhang ,  Yushu Zhang ,  Sergey Sosnin ,  Seau S. Lim

IPC: H04W74/08 ,  H04W72/12

Abstract: A method for handling a Message A physical uplink shared channel (PUSCH) transmission in a random access channel (RACH) procedure for use in fifth generation new radio (5G NR) wireless communication system includes determining that the Message A PUSCH transmission in a first step of a two-step RACH procedure overlaps with at least one other uplink physical channel transmission and transmitting at least one of the Message A PUSCH transmission or the at least one other uplink physical channel transmission in accordance with a priority rule.

公开(公告)号：US11337240B2

公开(公告)日：2022-05-17

申请号：US16650518

申请日：2018-09-28

Applicant: APPLE INC.

Inventor： Youn Hyoung Heo ,  Bharat Shrestha ,  Yujian Zhang

IPC: H04L12/28 ,  H04W72/12

Abstract: An apparatus to be used in a UE in a mobile communication network to communicate with a base station, includes a memory configured to store a RRC message, and processing circuitry configured to decode the RRC message to obtain BWP configuration information and mapping information, identify one or more UL BWPs and one or more DL BWPs within a carrier bandwidth per Serving Cell based on the BWP configuration information, identify one or more SR configurations which a LCH is mapped to for the UL BWPs based on the mapping information, the LCH being mapped to none or one SR configuration for each of the UL BWPs, identify activation of a UL BWP of the UL BWPs, and encode an SR on a PUCCH based on a SR configuration for the UL BWP.

公开(公告)号：US11337062B2

公开(公告)日：2022-05-17

申请号：US16727634

申请日：2019-12-26

Applicant: Apple Inc.

Inventor： Yujian Zhang ,  Youn Hyoung Heo ,  Achim Luft

IPC: H04L9/00 ,  H04W12/041 ,  H04B7/0417 ,  H04W52/02 ,  H04L27/00 ,  H04W4/70 ,  H04W76/14 ,  H04W76/10 ,  H04L43/16 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12 ,  H04W24/02 ,  H04W72/10 ,  H04L27/36 ,  H04W88/02

Abstract: Embodiments have a master eNB with a control plane and optional data plane to user equipment and a secondary eNB with a data plane to the user equipment. The user equipment thus uses both the master eNB and the secondary eNB for data communications while receiving control information from only the master eNB. The master eNB and secondary eNB are connected with an X2 interface. When the secondary eNB desires to refresh its security key, it informs the master eNB using the X2 interface. The master eNB then uses its control plane with the user equipment to initiate a security key refresh for the secondary eNB.

公开(公告)号：US20220104048A1

公开(公告)日：2022-03-31

申请号：US17643538

申请日：2021-12-09

Applicant: APPLE INC.

Inventor： Yongjun Kwak ,  Gang Xiong ,  Hong He ,  Yujian Zhang ,  Debdeep Chatterjee ,  Honglei Miao ,  Bharat Shrestha

IPC: H04W24/08 ,  H04L5/00

Abstract: Technology for a user equipment (UE), operable for monitoring a physical downlink control channel (PDCCH) is disclosed. The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein the predetermined monitoring occasion has a periodicity of P slots or P symbols with an offset Os. The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein Os has an offset with respect to a first slot in subframe number zero (SFN #0). The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein P is a positive integer greater than zero.

公开(公告)号：US20220086786A1

公开(公告)日：2022-03-17

申请号：US17420127

申请日：2020-01-08

Applicant: Apple Inc.

Inventor： Murali Narasimha ,  Youn Hyoung Heo ,  Yujian Zhang

IPC: H04W56/00 ,  H04W74/08 ,  H04W48/10 ,  H04B7/185

Abstract: Methods and apparatus are described for carrying out timing adjustments in a wireless communications network. The approach includes a user equipment (UE) that includes processor circuitry and a radio front end circuitry. The processor circuitry is configured to obtain a timing advance value for the wireless communication with a satellite base station, and to determine a transmission time for transmission of a random access channel (RACH) preamble based on the timing advance value. The radio front end circuitry transmits the random access preamble at the transmission time. Finally, the processor circuitry is further configured to receive a response to the transmitted random access preamble.

公开(公告)号：US11122453B2

公开(公告)日：2021-09-14

申请号：US16479487

申请日：2018-03-20

Applicant: Apple Inc.

Inventor： Candy Yiu ,  Sudeep K. Palat ,  Seau S. Lim ,  Yujian Zhang

IPC: H04W4/00 ,  H04W24/10 ,  H04W36/00 ,  H04W72/04

Abstract: A secondary node (SN) in evolved universal mobile telecommunications system terrestrial radio access network new radio-dual connectivity (EN-DC) with a master node (MN) can directly provide measurement configuration and receive measurement reports from a UE and/or coordinate measurement configuration and reporting with the MN. For example, only one measurement object configuration is allowed for a frequency, but both MN and SN can provide measurement reporting configurations on the same measurement object. The UE can send measurement reports for the same measurement object to both MN and SN or the node that configured the reporting criteria configuration. In another embodiment, only one node provides the reporting configuration but configures the UE to provide reporting to one node or both MN and SN.

公开(公告)号：US20210266118A1

公开(公告)日：2021-08-26

申请号：US17319252

申请日：2021-05-13

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Pingping Zong ,  Yujian Zhang ,  Mo-Han Fong ,  Jong-Kae Fwu

IPC: H04L5/00 ,  H04W72/04 ,  H04W4/70 ,  H04W72/00

Abstract: Disclosed herein are apparatuses, systems, and methods using or implementing dynamic resource allocation (DRA) of resources for machine-type communication (MTC), as a secondary partition within a system bandwidth. Allocations outside the secondary partition are configured as a primary partition for other than MTC. Apparatuses may perform MTC communications within the secondary partition when DRA configuration information includes allocation information for the secondary partition and the apparatus is configured for MTC. Otherwise, if the apparatus is other than MTC, the apparatus may refrain from performing communications in the secondary partition. Other embodiments are described.

公开(公告)号：US11057814B2

公开(公告)日：2021-07-06

申请号：US16584651

申请日：2019-09-26

Applicant: Apple Inc.

Inventor： Yujian Zhang ,  Mo-Han Fong ,  Pingping Zong ,  Alexei Davydov

IPC: H04L12/24 ,  H04L5/14 ,  H04W84/18 ,  H04W36/18 ,  H04W36/08 ,  H04W36/00 ,  H04W36/30 ,  H04W36/38 ,  H04W84/04 ,  H04W36/32

Abstract: User equipment (UE), an enhanced NodeB (eNB) and method of reducing handover latency are generally described. The UE may transmit measurement feedback to the eNB based on control signals. The UE may receive a reconfiguration message from the eNB or another eNB to the UE is attached. The reconfiguration message may contain reconfiguration information indicating whether or not a physical layer or layer 2 of the UE is to be reconfigured and/or a security key is to be updated. The reconfiguration information may be dependent on whether the handover is between eNBs controlled by a same entity and/or whether the handover comprises an intra-frequency transition. The UE or eNB may initiate handover of the UE. During handover the UE may avoid physical layer or layer 2 reconfiguration or the security key update. The security key and data for the UE may be provided directly between the eNBs.

公开(公告)号：US20210058818A1

公开(公告)日：2021-02-25

申请号：US16475817

申请日：2018-01-18

Applicant: APPLE INC.

Inventor： Yujian Zhang ,  Sudeep Palat ,  Jing Zhu ,  Wey-Yi Guy ,  Youn Hyoung Heo

IPC: H04W28/02 ,  H04W80/02 ,  H04W28/06 ,  H04L1/00 ,  H04W76/27

Abstract: An apparatus of a cellular data communication device includes one or more memory devices configured to store data corresponding to a plurality of service data units (SDUs) from a protocol layer higher than a packet data convergence protocol (PDCP) layer of a cellular data network, and one or more processors operably coupled to the one or more memory devices and configured to concatenate the plurality of SDUs into a single protocol data unit (PDU) above the PDCP layer.

公开(公告)号：US10924958B2

公开(公告)日：2021-02-16

申请号：US16595637

申请日：2019-10-08

Applicant: Apple Inc.

Inventor： Candy Yiu ,  Yang Tang ,  Yujian Zhang ,  Rui Huang

IPC: H04W24/10 ,  H04W36/00 ,  H04W28/08 ,  H04W72/12

Abstract: An embodiment for user equipment that receives a plurality of measurement gap repetition patterns from a network. Each measurement gap repetition pattern may be assigned to a different frequency of the network. The plurality of measurement gap repetition patterns may include skipping measurement patterns. Further embodiments may include the user equipment receiving a repetition period in a measurement object frame or receiving a plurality of measurement gap repetition patterns in which the measurement gaps are non-colliding with measurement gaps of other repetition patterns assigned to the user equipment.