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公开(公告)号：US12096498B2
公开(公告)日：2024-09-17
申请号：US18119463
申请日：2023-03-09
Applicant: Apple Inc.
Inventor： Alexander Sirotkin , Yifan Yu , Min Huang , Jaemin Han , Feng Yang
Abstract: Embodiments of a Next Generation Node B (gNB) are described herein. The gNB may be configured with logical nodes, including a gNB central unit (gNB-CU) and a gNB distributed unit (gNB-DU). The gNB-CU may include a gNB-CU control plane (gNB-CU-CP) for control-plane functionality, and a gNB-CU user plane (gNB-CU-UP) for user-plane functionality. The gNB may initiate an E1 interface setup procedure, a bearer context setup procedure, and a UE context setup procedure to establish a UE context that includes a signaling radio bearer (SRB) and a data radio bearer (DRB) configuration. The UE context setup request message may be configured to include quality-of-service parameters for the DRB configuration.
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公开(公告)号：US11153272B2
公开(公告)日：2021-10-19
申请号：US16408028
申请日：2019-05-09
Applicant: Apple Inc.
Inventor： Feng Yang , Min Huang , Xu Zhang , Alexander Sirotkin , Jaemin Han
Abstract: Embodiments described herein relate to managing bearers in a radio access network (e.g., next generation RAN (NG-RAN), etc.). In one example, a central-unit control-plane (CU-CP) communicates with a distributed unit (DU) and a CU-UP to exchange transport network layer addresses (TNLAs) and tunnel endpoint identifiers (TEIDs) between the DU and the CU-UP. In this way, the DU becomes resistant to the CU-UP's rejection of a bearer setup request from the CU-CP during a bearer setup procedure. Furthermore, during virtual machine (VM) migration or local problems of the CU-UP, an E1 procedure known as “bearer relocate” can be defined to notify the DU of a new TNLA for one or more affected general packet radio service tunneling protocol (GTP) tunnels that are affected by the VM migration or local problems.
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公开(公告)号：US11153271B2
公开(公告)日：2021-10-19
申请号：US16277658
申请日：2019-02-15
Applicant: Apple Inc.
Inventor： Feng Yang , Min Huang , Xu Zhang , Alexander Sirotkin , Jaemin Han
Abstract: Embodiments described herein relate to managing bearers in a radio access network (e.g., next generation RAN (NG-RAN), etc.). In one example, a central-unit control-plane (CU-CP) communicates with a distributed unit (DU) and a CU-UP to exchange transport network layer addresses (TNLAs) and tunnel endpoint identifiers (TEIDs) between the DU and the CU-UP. In this way, the DU becomes resistant to the CU-UP's rejection of a bearer setup request from the CU-CP during a bearer setup procedure. Furthermore, during virtual machine (VM) migration or local problems of the CU-UP, an E1 procedure known as “bearer relocate” can be defined to notify the DU of a new TNLA for one or more affected general packet radio service tunneling protocol (GTP) tunnels that are affected by the VM migration or local problems.
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公开(公告)号：US10952265B2
公开(公告)日：2021-03-16
申请号：US16393709
申请日：2019-04-24
Applicant: Apple Inc.
Inventor： Feng Yang , Alexander Sirotkin , Jaemin Han , Xu Zhang
Abstract: Systems and methods of modifying the bearer context of a DRB of an E1 interface for a gNB are described. To modify the bearer context associated with a DRB for a particular UE, the gNB-CU-UP transmits a Bearer Context Modification Required message through the E1 interface and receives in response a Bearer Context Modification Confirm message that confirms the modification of the bearer context. The Bearer Context Modification Required message and Bearer Context Modification Confirm message both include the new GTP TEID and TNL address to be used after modification of the bearer context, a gNB-CU-CP UE E1AP ID that uniquely identifies a UE association over the E1 interface within the gNB-CU-CP, a gNB-CU-UP UE E1AP ID that uniquely identifies a UE association over the E1 interface within the gNB-CU-UP, and a DRB ID IE that uniquely identifies the DRB.
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公开(公告)号：US10932168B2
公开(公告)日：2021-02-23
申请号：US16141440
申请日：2018-09-25
Applicant: Apple Inc.
Inventor： Feng Yang , Min Huang , Alexander Sirotkin , Xu Zhang
Abstract: Embodiments of a Next Generation Node-B (gNB) and methods of communication are disclosed herein. The gNB may be configurable to operate as a source gNB (S-gNB). The S-gNB may transfer, from a control plane (CU-CP) of the S-gNB to a CU-CP of a target gNB (T-gNB), an XnAP handover request message that indicates an Xn handover of a User Equipment (UE) from the S-gNB to the T-gNB. The S-gNB may initiate data forwarding, from a user plane (CU-UP) of the S-gNB to a CU-UP of the T-gNB, of downlink data packets. The data forwarding may be terminated based on reception of end marker packets from a user plane function (UPF) entity. The CU-UP of the S-gNB may transfer end marker packets to the CU-UP of the S-gNB to indicate termination of the data forwarding.
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Patent Agency Ranking
公开(公告)号：US11723088B2
公开(公告)日：2023-08-08
申请号：US17869889
申请日：2022-07-21
Applicant: Apple Inc.
Inventor： Feng Yang , Alexander Sirotkin , Jaemin Han , Xu Zhang
Abstract: Systems and methods of setting up an E1 interface for a gNB are described, A transmitting entity of the gNB-CU-CP and gNB-CU-UP initiates the first TNL association between the gNB-CU-CP and gNB-CU-UP, and is also limited to initiating the E1 Setup procedure. The transmitting entity sends an E1 SETUP REQUEST message to set up the E1 interface. Afterwards, a message is received from the receiving entity. The transmitting entity determines that the setup of the E1 interface is successful if the message contains IEs of an E1 SETUP RESPONSE message. The types of IEs include a message type IE and a name of the transmitting entity.
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公开(公告)号：US11197332B2
公开(公告)日：2021-12-07
申请号：US16615081
申请日：2018-06-19
Applicant: Apple Inc.
Inventor： Alexander Sirotkin , Yifan Yu , Min Huang , Jaemin Han , Feng Yang
Abstract: Embodiments of a Next Generation Node B (gNB) are described herein. The gNB may be configured with logical nodes, including a gNB central unit (gNB-CU) and a gNB distributed unit (gNB-DU). The gNB-CU may include a gNB-CU control plane (gNB-CU-CP) for control-plane functionality, and a gNB-CU user plane (gNB-CU-UP) for user-plane functionality. The gNB may initiate an E1 interface setup procedure, a bearer context setup procedure, and a UE context setup procedure to establish a UE context that includes a signaling radio bearer (SRB) and a data radio bearer (DRB) configuration. The UE context setup request message may be configured to include quality-of-service parameters for the DRB configuration.
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8.发明授权公开(公告)号：US11190989B2
公开(公告)日：2021-11-30
申请号：US16419245
申请日：2019-05-22
Applicant: Apple Inc.
Inventor： Alexander Sirotkin , Xu Zhang , Jaemin Han , Feng Yang , Honglei Miao , Jerome Parron , Markus Dominik Mueck , Jing Zhu , Ellen Liao , Jeongho Jeon , Youn Hyoung Heo , Anthony Lee , Seau S. Lim , Marta Martinez Tarradell , Meghashree Dattatri Kedalagudde , Puneet Jain , Bharat Shrestha
Abstract: A Next Generation Node-B (gNB) and methods of communication are generally described herein. The gNB is configurable to operate as a source gNB. The gNB is configured with logical nodes including a gNB central unit (gNB-CU) and a gNB distributed unit (gNB-DU). The gNB-CU comprises a gNB-CU control plane (gNB-CU-CP) for control-plane functionality, and a gNB-CU user plane (gNB-CU-UP) for user-plane functionality. When a handover of a User Equipment (UE) from the source gNB to a target gNB is performed, the gNB transfers, from the gNB-DU to the gNB-CU-UP, a downlink data delivery status (DDDS) message to indicate that the gNB-CU-UP is to stop transfer, to the gNB-DU, of downlink data intended for the UE.
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公开(公告)号：US20210176676A1
公开(公告)日：2021-06-10
申请号：US17182106
申请日：2021-02-22
Applicant: Apple Inc.
Inventor： Feng Yang , Min Huang , Alexander Sirotkin , Xu Zhang
IPC: H04W36/00
Abstract: Embodiments of a Next Generation Node-B (gNB) and methods of communication are disclosed herein. The gNB may be configurable to operate as a source gNB (S-gNB). The S-gNB may transfer, from a control plane (CU-CP) of the S-gNB to a CU-CP of a target gNB (T-gNB), an XnAP handover request message that indicates an Xn handover of a User Equipment (UE) from the S-gNB to the T-gNB. The S-gNB may initiate data forwarding, from a user plane (CU-UP) of the S-gNB to a CU-UP of the T-gNB, of downlink data packets. The data forwarding may be terminated based on reception of end marker packets from a user plane function (UPF) entity. The CU-UP of the S-gNB may transfer end marker packets to the CU-UP of the S-gNB to indicate termination of the data forwarding.
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公开(公告)号：US12167230B2
公开(公告)日：2024-12-10
申请号：US17311749
申请日：2020-03-18
Applicant: Apple Inc.
Inventor： Jaemin Han , Feng Yang , Alexander Sirotkin , Sudeep Palat
Abstract: Apparatuses, systems, and methods for a network node to inter-connect with a first secondary node (SN) within a core network. The network node may be a master node and may serve a UE. The first SN may be a source SN. The network node may initiate a change from the first SN to a second SN, which may be a target SN. The network mode may determine data forwarding from the first SN to the second SN and may request, from the first SN, data forwarding intentions prior to initiating the change from the first SN to a second first SN to the second SN. The network node may send, to the first SN, data forwarding instructions (e.g., based, at least in part, on the data forwarding intentions of the first SN) and the data forwarding instructions may include a requirement for the first SN to follow the data forwarding instructions.
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