公开(公告)号：US11751269B2

公开(公告)日：2023-09-05

申请号：US16631918

申请日：2018-08-22

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： Angelo Centonza ,  Paul Schliwa-Bertling ,  Qian Chen

IPC: H04W76/18 ,  H04W76/25 ,  H04W76/27 ,  H04W8/08 ,  H04W48/16 ,  H04W68/00 ,  H04W92/10

CPC classification number: H04W76/18 ,  H04W8/08 ,  H04W48/16 ,  H04W68/005 ,  H04W76/25 ,  H04W76/27 ,  H04W92/10

Abstract: Systems, methods, and apparatus for operating RAN and CN nodes are disclosed. An example method of operating a RAN node includes receiving, from a CN node, a PDU for a wireless device that is in an inactive state. The RAN node pages the wireless device in response to receiving the PDU from the CN node. The RAN node sends a non-delivery message to the CN node in response to failure of the paging for the wireless device, where the non-delivery message includes an indication that the wireless device is in the inactive state.
An example method of operating a CN node includes the CN node sending a PDU for a wireless device to a RAN node. The CN node then receives a non-delivery message from the RAN node, where the non-delivery message includes an indication that the wireless device is in an inactive state.

公开(公告)号：US11533708B2

公开(公告)日：2022-12-20

申请号：US17056515

申请日：2019-05-15

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Qian Chen ,  Paul Schliwa-Bertling ,  Hans Bertil Rönneke ,  Roland Gustafsson

IPC: H04W68/02 ,  H04W76/27 ,  H04W72/12

Abstract: Embodiments of a method performed by a radio access node for network scheduled User Equipment (UE) transition to connected mode and corresponding embodiments of a radio access node are disclosed. In some embodiments, a method performed by a radio access node comprises receiving: (a) a notification request from an Access and Mobility Management Function (AMF) to retrieve reachability information for a UE or (b) downlink data to be communicated to the UE. The method further comprises, upon receiving either (a) or (b), determining that the UE is in an inactive state and is currently unreachable. The method further comprises sending information to the AMF that notifies the AMF that the UE is currently unreachable. The information comprises information that indicates that RAN paging of the UE is scheduled or scheduling assistance information. Embodiments of method performed by an AMF and corresponding embodiments of an AMF are also disclosed.

公开(公告)号：US20220256407A1

公开(公告)日：2022-08-11

申请号：US17618617

申请日：2020-06-12

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Qian Chen ,  Gunnar Mildh ,  Hans Bertil Rönneke ,  Patrik Rugeland ,  Paul Schliwa-Bertling

IPC: H04W36/00 ,  H04W40/36

Abstract: Systems and methods for handling a wireless device in a Configuration Management (CM)-Connected state with Radio Resource Control (RRC) Inactive state are provided. In some embodiments, a method for performing a mobility transfer from a Fifth Generation network to an Evolved Packet System (EPS) network includes a 5G network node: receiving, from an EPS network node, a context request for context associated with a User Equipment (UE); determining data forwarding information associated with the UE; and sending, to the EPS network node, a context response comprising context information associated with the UE and data forwarding information associated with the UE. In this way, packet losses will be minimized leading to improved end user performance.

公开(公告)号：US11290982B2

公开(公告)日：2022-03-29

申请号：US17046490

申请日：2019-04-10

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Qian Chen ,  Roland Gustafsson ,  Stefan Rommer ,  Hans Rönneke ,  Paul Schliwa-Bertling

IPC: H04W76/30 ,  H04W68/00 ,  H04W76/27 ,  H04W52/02

Abstract: Embodiments herein related to notifications concerning UE unreachability. Especially, the embodiments herein provide methods performed by an Access and Mobility Management Function, AMF, as well as a corresponding Access and Mobility Management Function, AMF, relating to notifications concerning UE unreachability.

公开(公告)号：US11202249B2

公开(公告)日：2021-12-14

申请号：US16493656

申请日：2018-03-15

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Stefan Rommer ,  Qian Chen ,  Daniel Nilsson ,  Paul Schliwa-Bertling

IPC: H04W4/00 ,  H04W48/16 ,  H04W76/25 ,  H04W8/08 ,  H04W68/00 ,  H04W80/10

Abstract: A method performed by an Access and mobility Management Function (AMF). The method includes receiving from a Session Management Function (SMF) a request to establish User Plane (UP) for a user equipment's (UE's) protocol data unit (PDU) session. The request includes information indicating an access type. The method also includes, in response to the request, performing the steps of: determining that the UE is in the idle state with respect to both a 3GPP access and a non-3GPP access and, as a result of determining that the UE is in the idle state with respect to both a 3GPP access and a non-3GPP access, the AMF initiates paging of the UE by the 3GPP access, the paging initiation comprising transmitting to a Radio Access Network, RAN, node a page request to page the UE.

公开(公告)号：US11057767B2

公开(公告)日：2021-07-06

申请号：US16328780

申请日：2016-10-11

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Lasse Olsson ,  Qian Chen ,  Håkan Tranberg ,  Hanbing Zhang

IPC: H04W4/00 ,  H04W12/06 ,  H04W4/90 ,  H04W8/30 ,  H04L29/06 ,  H04W8/04 ,  H04W8/08 ,  H04W24/08 ,  H04W60/00

Abstract: The embodiments herein relate to a method performed by a local subscriber node for handling attachment of a User Equipment (UE) to a central network. The local subscriber node comprises default subscription data which is common for all UEs which are associated with a local network. When a connection to a central subscriber node is accessible, the local subscriber node obtains authentication data associated with the default subscription data from the central subscriber node. When the UE requests attachment to the central network when the connection to the central subscriber node is inaccessible, the local subscriber node sends the obtained authentication data for the UE to a mobility management node.

公开(公告)号：US10952278B2

公开(公告)日：2021-03-16

申请号：US16344925

申请日：2019-02-19

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Gunnar Mildh ,  Qian Chen ,  Mohammed Yazid Lyazidi ,  Ulf Mattsson ,  Hans Bertil Rönneke ,  Paul Schliwa-Bertling ,  Magnus Stattin

IPC: H04W80/08 ,  H04W76/12 ,  H04W76/11 ,  H04W76/16 ,  H04W12/00 ,  H04L29/08 ,  H04W8/18

Abstract: Exemplary embodiments include methods performed by a cellular Internet of Things, CIoT, user equipment, UE, for transmission of data in a communication network comprising a radio access network, RAN, and a core network, CN. Embodiments include sending, to an Access and Mobility Management Function, AMF, a request to establish a small-data user-plane, SDUP, data session. Embodiments can also include receiving a response indicating that the requested SDUP data session is established. The response can include an identifier associated with a user-plane function, UPF, within the CN, that supports the established SDUP data session. The response can also include an SDUP security configuration for communication between the UE and the CN during the established SDUP data session. Embodiments can also include subsequently communicating user data, associated with the established SDUP data session, with the UPF via a serving node in the RAN. Other embodiments include complementary methods performed by AMFs and serving nodes, as well as UEs and network nodes configured to perform the exemplary methods.

公开(公告)号：US20200163009A1

公开(公告)日：2020-05-21

申请号：US16609285

申请日：2018-05-09

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Qian Chen ,  Paul Schliwa-Bertling ,  Peter Ramle ,  Josefin Karlsson ,  Peter Hedman

IPC: H04W48/18 ,  H04W76/10

Abstract: Disclosed herein is a core network entity and a method of operation of a core network entity in a wireless communication network, comprising: receiving an establishment request message from a Radio Access Network (RAN) node; and sending an establishment response message to the RAN node where the establishment response message comprises an indication of a relay capability of the core network entity.

公开(公告)号：US12213102B2

公开(公告)日：2025-01-28

申请号：US18214220

申请日：2023-06-26

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Qian Chen ,  Stefan Rommer ,  Paul Schliwa-Bertling

IPC: H04W68/02 ,  H04W8/08 ,  H04W48/16 ,  H04W68/00 ,  H04W76/27

Abstract: Embodiments herein relate generally to a Control plane, CP, node, a method performed by the CP node, a Radio Access Network, RAN, node and a method performed by the RAN node. More particularly the embodiments herein relate to handling paging.

公开(公告)号：US20250031039A1

公开(公告)日：2025-01-23

申请号：US18708456

申请日：2022-10-18

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： Zhang Fu ,  Monica Wifvesson ,  Juying Gan ,  Cheng Wang ,  Qian Chen ,  David Castellanos Zamora

IPC: H04W12/069 ,  H04L12/28 ,  H04W12/63 ,  H04W92/18

Abstract: A remote communication device performs an authentication procedure with a home communication network, via a relay communication device, to authenticate the remote communication device to the home communication network for a proximity-based service, ProSe. Performing the authentication procedure comprises deriving one or more keys included in an authentication vector. The remote communication device generates an anchor key for the ProSe directly from the one or more keys included in the authentication vector. The remote communication device protects ProSe direct communication between the remote communication device and the relay communication device using security key material derived from the anchor key.