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

IPC: H04W76/12 ,  H04W80/02 ,  H04W92/20

CPC classification number: H04W76/12 ,  H04W80/02 ,  H04W92/20

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.

公开(公告)号：US12010548B2

公开(公告)日：2024-06-11

申请号：US17274116

申请日：2019-09-05

Applicant: Apple Inc.

Inventor： Murali Narasimha ,  Jaemin Han ,  Candy Yiu ,  Alexander Sirotkin

IPC: H04W28/02 ,  H04W28/086 ,  H04W88/14

CPC classification number: H04W28/0284 ,  H04W28/0273 ,  H04W28/0862 ,  H04W88/14

Abstract: Provided herein is an apparatus and a method for congestion handling in RAN. The disclosure provides an apparatus for a relay node in a RAN including the relay node and a donor node providing an interface to a core network and a backhaul link to the relay node. The apparatus includes a RF interface to receive and transmit downlink data for one or more UEs or UE bearers; and a processing circuitry coupled with the RF interface. The processing circuitry is to determine a downlink congestion occurs at the relay node; and generate a downlink congestion indication to identify a UE or a UE bearer or a backhaul RLC channel affected by the downlink congestion. The RF interface is to transmit the downlink congestion indication to the donor node. In addition to the downlink congestion handling, the relay node can also be to handle uplink congestion in a similar way.

公开(公告)号：US20240080799A1

公开(公告)日：2024-03-07

申请号：US18379382

申请日：2023-10-12

Applicant: Apple Inc.

Inventor： Alexander Sirotkin ,  Jaemin Han

IPC: H04W68/00 ,  H04L1/1607 ,  H04W28/06 ,  H04W80/08

CPC classification number: H04W68/005 ,  H04L1/1642 ,  H04W28/06 ,  H04W80/08 ,  H04W84/18

Abstract: Devices, methods, communication nodes, base stations, storage media, and other embodiments are provided for managing associations in a communication network. In one example embodiment, a New Radio (NR) node is configured for NR user-plane protocol communications between a master node (MN) and a secondary node (SN). The NRnode is configured to generate a downlink (DL) user data message with downlink user data, initiate transmission of the DL user data message to a second node, and process a DL data delivery status message from the second node in response to the DL user data message. In various embodiments, polling and SCG split-bearer configurations are supported by such messaging. In some embodiments, packet data convergence protocol (PDCP) serial numbers are communicated for transmission and retransmission management. In some embodiments, DL configurations initiated by an SN are enabled, as well as UL configurations initiated by either an MN or an SN.

公开(公告)号：US20220167438A1

公开(公告)日：2022-05-26

申请号：US17442099

申请日：2020-05-01

Applicant: Apple Inc.

Inventor： Bharat Shrestha ,  Meghashree Dattatri Kedalagudde ,  Puneet Jain ,  Jaemin Han

IPC: H04W76/12 ,  H04W76/20 ,  H04W76/30 ,  H04W68/00

Abstract: This disclosure describes methods, systems, and devices for mobile terminated, MT, early data transmission, EDT. A method involves receiving (602), for a user equipment, UE, UE MT EDT capability information, receiving (604) an indication of downlink data for transmission to the UE. Furthermore, based on the UE MT EDT capability information, to initiate (606) MT EDT to transmit the downlink data to the UE and then initiating MT EDT to send (608) the downlink data to the UE.

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

IPC: H04L29/12 ,  H04L29/08

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.

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

IPC: H04L29/12 ,  H04L29/08

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.

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.

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

IPC: H04W76/12 ,  H04W24/04 ,  H04W76/22 ,  H04W76/11 ,  H04W88/08

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.

公开(公告)号：US20200288511A1

公开(公告)日：2020-09-10

申请号：US16826154

申请日：2020-03-20

Applicant: Apple Inc.

Inventor： Richard Burbidge ,  Sangeetha L. Bangolae ,  Youn Hyoung Heo ,  Kyeongin Jeong ,  Jaemin Han ,  Mo-han Fong

IPC: H04W76/10

Abstract: There is are provided methods and apparatus relating to layer 2 relaying and mobility using a sidelink interface, including a remote user equipment (UE) for use in a wireless communication network, the UE comprising: a device to network (D2N) entity, a device to device (D2D) entity, and control logic to: receive a service data unit derived from an IP packet direct the service data unit to the D2N entity for communication with an eNB using a Uu interface in a first mode of operation, and direct the service data unit to the D2D entity for communication with the eNB via a first relay UE using a sidelink interface in a second, relay, mode of operation.

公开(公告)号：US12250600B2

公开(公告)日：2025-03-11

申请号：US17440525

申请日：2020-05-01

Applicant: Apple Inc.

Inventor： Jaemin Han ,  Alexander Sirotkin ,  Bharat Shrestha ,  Yi Guo

IPC: H04W36/00

Abstract: One or more methods for enhancing inter-node handover (HO) signaling for conditional HO (CHO). At least one of the methods include: providing a message that comprises indications of a plurality of potential target cell identifiers that are applicable to a CHO operation; and performing a CHO operation based on the message.