Telefonaktiebolaget Lm Ericsson (publ)

Juying Gan

Yunjie Lu

Qian Chen

Erik Wikström

Yong Yang

Jinyin Zhu

George Foti

Stefan Rommer

Maria Belen Pancorbo Marcos

Shabnam Sultana

Gang Ren

Chengqiong Xie

Xiao Li

Susana Fernandez Alonso

Wenliang Xu

Hui Calvin Yang

Zhang Fu

Wu Wang

Deqin Zhan

Paul Schliwa-Bertling

Zhang Zhang

Monica Wifvesson

Peter Hedman

Dinand Roeland

Ivo Sedlacek

Alexander Vesely

Lasse Olsson

Ann-Christine Sander

Emiliano Merino Vazquez

Mikael Wass

Congchi Zhang

Fuencisla Garcia Azorero

Angel Navas Cornejo

Yingjiao He

Jie Ling

Kaiyuan Huang

Hui Yang

Hanbing Zhang

Yiming Wu

Wen Zhang

Yidong Yao

Erik Wikstroem

Apparatuses and methods for DDD status event handling with I-SMF improvement. In one embodiment, a session management function, SMF, node is provided. The SMF node includes processing circuitry configured to receive a subscription request to an event associated with the SMF node where the subscription request includes at least one of a packet detection rule, PDR, information and a Traffic Descriptor, and instruct a user plane function, UPF, node based at least on the subscription request.

Status event handling associated with a session management function (SMF) node

Methods of operating a radio access network node and a core network node to link a remote user equipment, RMUE, device to a relay user equipment, RLUE, device in a communications network are described. The radio access network node operates to receive a message that includes information corresponding to either the RMUE device or the RLUE device having a connection that is established between the radio access network node and the corresponding one of the RMUE device or the RLUE device and that uses a first access and mobility management function, AMF. The radio access network node further operates to link the RMUE device to the RLUE device using the first AMF. The core network node operates to receive a message that a first AMF includes data corresponding to the RLUE device and links the RMUE device to the RLUE device based on the message.

Associating remote UE with relay UE in 5GC

Methods and apparatuses for configuration of monitoring for terminal device are disclosed. According to an embodiment, a subscriber management node determines multiple first parameters which are provided from one or more servers and indicate requirements for monitoring a same terminal device. The subscriber management node determines, based on the multiple first parameters, a second parameter which is to be applied to the same terminal device to satisfy the requirements indicated by the multiple first parameters.

Methods and apparatuses for configuration of monitoring for terminal device

A method performed by a relay UE for determining whether the relay UE may provide a relay service to a remote UE. The method includes the relay UE receiving from the remote UE a first message comprising a first authorization token and a first digital signature for verifying the authenticity of the first authorization token, wherein the first digital signature was generated by a first network function using the first authorization token and a first key, and the first authorization token indicates whether or not the remote UE is authorized to utilize a relay service provided by the relay UE. The method further includes the relay UE verifying the authenticity of the first authorization token.

Relay UE and remote UE authorization

Embodiments of the present disclosure provide methods and apparatuses for session management. A method comprises receiving from a user equipment (UE) a request for establishing another session to a data network identified by a data network identification. At least one existing session of the UE has been established to the data network. The method further comprises checking whether the subscription data or the policy data for the UE includes a first indication which indicates that a same session management node for multiple sessions to the data network identified by the same data network identification is required. The method further comprises selecting the same session management node as the at least one existing session for the UE when the subscription data or the policy data includes the first indication. The method further comprises sending a session establishment request to the selected session management node.

Method and apparatus for session management

A method performed by an application function, AF, for a communication network, wherein the AF has been informed, in a first notification, about an out-of-credit event associated with a user of a service provided by the AF, the method comprising sending subscription request, to a network function, NF, for requesting notifications about reallocation-of-credit events associated with one or more users of a service provided by the AF; receiving, from the NF, a second notification of a reallocation-of-credit event associated with the user of the service provided by the AF for which the AF has been informed about the out-of-credit event, such that the AF can perform one or more second actions with respect to the service.

Application awareness of credit conditions in communication network

The present disclosure proposes a method of an endpoint of a user plane path between an access network and a core network in a telecommunication network, comprising: detecting whether a failure exists on the user plane path or not; and notifying a node in the core network of the failure in order for the node to handle the failure, upon detecting the failure. With this method, the failure can be handled timely, thus minimizing the service interruption.

Detection and handling of failure on user plane path

Various embodiments of the present disclosure provide methods and apparatuses for improved packet detection rule provision. A method performed by a first network entity comprises: transmitting packet detection information, PDI, to a second network entity, wherein the PDI indicates information on one or more traffic endpoints on which packets are to be detected.

Method and apparatus for improved packet detection rule provision

The present disclosure provides methods for signaling QoS Flow control parameters, and corresponding NF entities. The method comprises generating one or more data flow rules associated with a QoS Flow and a QoS Flow profile. The data flow rules include parameters specific to a data flow that belongs to the QoS Flow, while the QoS Flow profile includes parameters that are common to all data flows that belong to the same QoS Flow. The present disclosure further discloses a corresponding method of receiving the QoS Flow control parameters. The present disclosure further provides corresponding computer readable medium.

QoS flow control parameters signaling

A method implemented in an access and mobility management function, AMF, node that implements at least one congestion control process is provided. A message including a first indication that the message is exempt from the at least one congestion control process is received by a UE. The message is forwarded to the SMF either with the exempt indication or, if this is missing, an indication that the AMF applies a congestion control. The SMF, only when receiving the forwarded message with the additional information inserted by the AMF, carries out a validation of the message of the UE, thus preventing that a UE tags a message to be exempted from congestion control, when it should be not be exempt.

Congestion control in AMF and SMF

System comprising a mobility management entity, MME, a first Radio Access node, RAN (eNB) offering Long Term Evolution, LTE, access, and a second radio access node, RAN (gNB) offering New Radio, NR, access; a user entity, UE, supporting both Long Term Evolution, LTE, and New Radio, NR, Radio Access Technology, RAT.

User plane setup during 5G system to evolved packet system handover

Methods and apparatuses are disclosed for facilitating roaming of terminal device. According to an embodiment, a session management node operable in a home network receives, from another session management node operable in a visiting network, a quality of service (QoS) policy per a roaming agreement between the visiting network and the home network during establishment of a protocol data unit (PDU) session for a terminal device. The session management node retrieves, from a subscriber management node, subscribed QoS parameters of the terminal device. The session management node obtains a result that is generated based on the QoS policy per the roaming agreement and the subscribed QoS parameters of the terminal device.

Methods and apparatuses for facilitating roaming of terminal device

Embodiments of the present disclosure relate to a method and an apparatus for allocating a PDU session ID for a terminal device. The method comprises: selecting (S), for a terminal device, a protocol data unit session identity, PDU session ID, from a group of PDU session IDs. The group of PDU session IDs are not allocated to the terminal device. According to the embodiments of the present disclosure, the network node may select, for the terminal device, a PDU session ID from a group of PDU session IDs, which are not allocated to the terminal device yet. Thus, any newly selected PDU session ID may be ensured as unique.

Method and apparatus for allocating PDU session ID for terminal device

Exemplary embodiments include methods for establishing a user-requested protocol data unit (PDU) session in a user's visited public land mobile network (VPLMN), by a session management function (V-SMF) in the VPLMN. Such methods include receiving, from an access and mobility management function (AMF) in the VPLMN, a PDUSession_CreateSMContext Request to establish the PDU session to be routed through the user's home PLMN (HPLMN). The PDUSession_CreateSMContext Request identifies an SMF (H-SMF) in the user's HPLMN. Such methods include sending, to the identified H-SMF, a PDUSession_Create Request to create the PDU session. The PDUSession_Create Request includes an identifier of a session management (SM) context, in the V-SMF, that is associated with the PDU session. Such methods include receiving, from the H-SMF, a PDUSession_Update Request that includes an identifier of an SM context, in the H-SMF, that is associated with the PDU session. Embodiments also include complementary methods performed by the H-SMF.

Secondary authorization at PDU session establishment for home routed roaming

Growing community of inventors

Shanghai, China

Juying Gan