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1.发明申请公开(公告)号：US20220150973A1
公开(公告)日：2022-05-12
申请号：US17430595
申请日：2020-02-13
Applicant: Apple Inc.
Inventor： Seau S. LIM , Yujian ZHANG , Anthony LEE , Youn Hyoung HEO , Gang XIONG , Sudeep PALAT
Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media for use in a wireless network for facilitating radio access synchronization. The method includes receiving, from a user equipment (UE) a message having a media access control (MAC) control element (CE) format and comprising a MAC protocol data unit (PDU) structure, the message being formed by multiplexing one or more MAC service data units (SDUs). The method further includes generating a response message to the received message by multiplexing a MAC random access response (RAR) with one or more MAC SDUs. The method then transmits the response message to the UE
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公开(公告)号：US20200288494A1
公开(公告)日：2020-09-10
申请号：US16650518
申请日：2018-09-28
Applicant: APPLE INC.
Inventor： Youn Hyoung HEO , Bharat SHRESTHA , Yujian ZHANG
IPC: 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.
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公开(公告)号：US20210282213A1
公开(公告)日：2021-09-09
申请号：US16465398
申请日：2018-05-05
Applicant: Apple Inc.
Inventor： Sudeep PALAT , Seau LIM , Yujian ZHANG , Richard BURBIDGE , Youn Hyoung HEO , Pingping ZONG
Abstract: Techniques for unifying split bearers at user equipment (UE) in an Evolved-Universal Terrestrial Radio Access-New Radio (E-ULTRA NR) dual connectivity (EN-DC) environment are described. According to various such techniques, a radio resource control (RRC) message can include an encapsulated configuration for a secondary cell group (SCG). Packet data convergence protocol (PDCP) configurations for MN or SN split bearers can be included in the master cell group (MCG) configuration in the RRC message or in the encapsulated SCG configuration. In some examples, an RRC message can include an encapsulated SCG configuration and an encapsulated PDCP configuration, where the encapsulated PDCP configuration including PDCP configuration information for the MN or SN split bearer. Other embodiments are described and claimed.
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公开(公告)号：US20230142206A1
公开(公告)日：2023-05-11
申请号：US18067340
申请日：2022-12-16
Applicant: APPLE INC.
Inventor： Kathiravetpillai SIVANESAN , Ali T. KOC , Satish C. JHA , Rath VANNITHAMBY , Yujian ZHANG
CPC classification number: H04W52/365 , H04W52/34 , H04W52/146 , H04W52/247 , H04W52/248 , H04W88/06 , H04W84/042 , Y02D30/70
Abstract: Embodiments described herein relate generally to a communication between a user equipment (“UE”) and a plurality of evolved Node Bs (“eNBs”). A UE may be adapted to operate in a dual connected mode on respective wireless cells provided by first and second eNBs. The UE may be adapted to estimate respective power headroom (“PHR”) values associated with simultaneous operation on the first and second wireless cells. The UE may cause the first and second PHR estimates to be transmitted to both the first and second eNBs. The first and second eNBs may use these estimates to compute respective uplink transmission powers for the UE. Other embodiments may be described and/or claimed.
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公开(公告)号：US20210392085A1
公开(公告)日：2021-12-16
申请号：US17309159
申请日：2019-10-29
Applicant: Apple Inc.
Inventor： Jaemin HAN , Feng YANG , Yujian ZHANG , Alexander SIROTKIN
IPC: H04L12/801 , H04L1/16
Abstract: An apparatus of a next generation Node B (gNB) Distributed Unit (DU) comprises one or more baseband processors to transmit one or more retransmitted Packet Data Convergence Protocol (PDCP) Protocol Data Units (PDUs) received from a gNB Central Unit (CU) to a user equipment (UE), and to feed back not only a latest, in-sequence New Radio User-plane (NR-U) Sequence Number (SN) to the CU for Release 15, but also a highest, in-sequence successfully delivered/transmitted PDCP SN, optionally, with a NR-U SN up to which the reported PDCP SN should be applied, which can provide an exact range of successfully delivered/transmitted status for retransmitted packets even in case of DU's re-ordering based on PDCP SN before transmitting to the UE. The apparatus can include a memory to store the reported PDCP SN and NR-U SN.
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Patent Agency Ranking
公开(公告)号：US20230087582A1
公开(公告)日：2023-03-23
申请号：US17959186
申请日：2022-10-03
Applicant: Apple Inc.
Inventor： Yujian ZHANG , Qian LI , Youn Hyoung HEO , Sudeep K. PALAT , Murali NARASIMHA
Abstract: Systems and methods of reducing control plane latency in a 5G IAB network are described. SRs transmitted between nodes indicate that a control plane PDU is to be transmitted. The SRs use periodic resources or OCCs reserved for control plane signaling and are initiated by an RRC message or RACH from the UE. The SRs are initiated if the LCD field in the MAC sub header of the RRC message indicates the CCCH or the DCCH logical channel. If the PDU is available after the original resource, a resource is used that is provided via another grant, which is periodically provided or automatically initiated due to failure to transmit on the original grant. The SR or RRC message can also specify a delayed timeslot for the grant. For contention-based procedures the RACH preamble is randomly selected or selected from among a set of RACH preambles assigned for RRC procedures.
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公开(公告)号：US20220078854A1
公开(公告)日：2022-03-10
申请号：US17419973
申请日：2020-02-12
Applicant: Apple Inc.
Inventor： Gang XIONG , Yujian ZHANG , Yushu ZHANG , Sergey SOSNIN , Seau S. LIM
Abstract: A method and device are disclosed for performing collision resolution in a two-step random access channel (RACH) process. In such a process, an MsgA PUSCH signal and a grant based PUSCH signal may collide. When such a collision is detected, either the MsgA PUSCH signal or the grant based PUSCh signal are dropped. The other of the two signals is then transmitted. The determination regarding which signal to drop can be based on a set of rules stored in memory.
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公开(公告)号：US20220038941A1
公开(公告)日：2022-02-03
申请号：US17276468
申请日：2019-09-25
Applicant: Apple Inc.
Inventor： Jaemin HAN , Yujian ZHANG , Alexander SIROTKIN , Sudeep K. PALAT
Abstract: Systems and methods of providing uplink in-order packet delivery of a QoS flow offloaded in a 5G network are described. An uplink forwarding tunnel is established between a source and target node after a determination is made to offload a QoS flow of a UE to the target node. The source node receives a SDAP PDU from the UE that contains an end marker and, in response, sends a GTP-U end marker packet to the target node via the uplink forwarding tunnel. The target node buffer packets associated with the QoS flow received from the UE after establishment of the uplink forwarding tunnel until the GTP-U end marker packet is received from the target node via the uplink forwarding tunnel and, in response, sends the buffered packets to the 5GC.
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公开(公告)号：US20230389077A1
公开(公告)日：2023-11-30
申请号：US18233571
申请日：2023-08-14
Applicant: Apple Inc.
Inventor： Sudeep PALAT , Yi GUO , Yujian ZHANG , Seau Sian LIM
IPC: H04W74/08
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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公开(公告)号：US20230037694A1
公开(公告)日：2023-02-09
申请号：US17968044
申请日：2022-10-18
Applicant: Apple Inc.
Inventor： Candy YIU , Yujian ZHANG , Yi GUO , Jaemin HAN
IPC: H04W36/00 , H04W76/30 , H04W12/037 , H04W12/0431 , H04W28/06
Abstract: Techniques to configure a user equipment (UE) for a multi-connectivity handover with a source base station (SBS) and a target base station (TBS) include encoding a measurement report for transmission to the SBS. The measurement report is triggered based on a measurement event configured by the SBS. Radio resource control (RRC) signaling from the SBS is decoded, the RRC signaling including a handover command in response to the measurement report. The handover command includes an indication for multi-connectivity support by the SBS and the TBS during the handover. A first protocol stack associated with the SBS and a second protocol stack associated with the TBS are configured at the UE. A packet data convergence protocol (PDCP) protocol data unit (PDU) received at the UE during the handover is processed using the first protocol stack or the second protocol stack.
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