Method for managing PDU session in wireless communication system and apparatus therefor

    公开(公告)号:US12041505B2

    公开(公告)日:2024-07-16

    申请号:US17850308

    申请日:2022-06-27

    IPC分类号: H04W76/12 H04W36/14

    CPC分类号: H04W36/14 H04W76/12

    摘要: It is disclosed a method for managing a PDU session in a wireless communication system and an apparatus for supporting the same. Particularly, a method for performing handover of a User Equipment (UE) performed by a source Radio Access Network (RAN) that includes a processor, a memory and a communication module in a wireless communication system may include determining to initiate handover to a target RAN; and transmitting a Handover Required message to a source Access and Mobility Management Function (AMF), and the handover is a handover in a case that there is no interface between the RANs or AMF change is required, and the Handover Required message includes a PDU session Identifier (ID) of an activated Protocol Data Unit (PDU) session.

    Method, user device, and network node for performing PDU session establishment procedure

    公开(公告)号:US11356893B2

    公开(公告)日:2022-06-07

    申请号:US16959870

    申请日:2018-12-28

    摘要: A method for transmitting, by user equipment, a PDU session establishment request includes: receiving a session management message based on an SSC mode from an SMF through an AMF in a state in which a back-off timer associated with a DNN-based congestion control is in operation, wherein the session management message is associated with a DNN to which the DNN based congestion control is applied; and transmitting a PDU session establishment request to the AMF for establishment of a new PDU session associated with the DNN on the basis of the session management message. The PDU session establishment request includes information for preventing rejection of the PDU session establishment request, and the information for preventing the rejection may be used to make the AMF ignore the DNN-based congestion control and transmit the PDU session establishment request to the SMF associated with the new PDU session.

    Method for supporting and providing LADN service in wireless communication system and apparatus therefor

    公开(公告)号:US11330642B2

    公开(公告)日:2022-05-10

    申请号:US16763453

    申请日:2018-11-12

    摘要: An aspect of the disclosure relates to a method for supporting a local access data network (LADN) service by an access and mobility management function (AMF) in a wireless communication system, and the method may comprise the steps of: providing LADN information for the LADN service to a terminal, wherein the LADN information includes LADN service area information and LADN data network name (DNN) information; acquiring location information of the terminal; when establishment of a packet data unit (PDU) session for providing the LADN service is determined on the basis of the location information of the terminal, transmitting to the terminal a preset message including a request for the establishment of the PDU session; and receiving, from the terminal, a request message for initiating the establishment of the PDU session.

    Method for selecting session and service continuity mode in wireless communication system and device therefor

    公开(公告)号:US11246172B2

    公开(公告)日:2022-02-08

    申请号:US16339918

    申请日:2017-08-03

    摘要: Disclosed are a method for selecting a session and a service continuity mode in a wireless communication system and a device therefor. Specifically, a method for selecting a session-and-service continuity (SSC) mode associated with a protocol data unit (PDU) session by a user equipment (UE) in a wireless communication system supporting a plurality of SSC modes may comprise the steps of: receiving a data transmission request from an application; checking whether a first PDU session can support an SSC mode associated with the application; and when the first PDU session can support the SSC mode associated with the application, transmitting data of the application to a network by using the first PDU session without sending a request for establishment of a new second PDU session to the network, although an SSC mode of the first PDU session does not match the SSC mode associated with the application.

    Method for managing uplink quality of service and base station for performing same method

    公开(公告)号:US11096082B2

    公开(公告)日:2021-08-17

    申请号:US16614560

    申请日:2018-05-29

    IPC分类号: H04W28/02

    摘要: A disclosure of the present specification provides a method for managing uplink quality of service (QoS) by a base station. The method may comprise the steps of: determining whether a timer, driven by a terminal in relation to reflective QoS, has expired; during driving of the timer of the terminal, transmitting multiple packets within a traffic flow, to which the reflective QoS is applied, without setting at least one of a reflective QoS indication (RQI) and a QoS flow ID (QFI) for the multiple packets therewithin; and before expiration of the timer being driven by the terminal, setting at least one of the RQI and the QFI for at least one packet within the traffic flow and transmitting the set packet.

    Method for managing session and SMF node

    公开(公告)号:US10798618B2

    公开(公告)日:2020-10-06

    申请号:US16065083

    申请日:2017-12-04

    摘要: The one disclosure of the present specification proposes a method for managing session. The method may be performed by a session management function, SMF, node and comprise: generating a packet data unit, PDU, session for a user equipment, UE; receiving, from an access and mobility management function, AMF, node, information about the UE; and determining, based on the information, whether to transmit an indication for notifying a user plane function, UPF, node to discard a downlink data for the PDU session of the UE. The determination may be dependent on whether the PDU session corresponds to a first service provided to the UE.

    Method and apparatus for monitoring user equipment reachability in wireless communication system

    公开(公告)号:US10721713B2

    公开(公告)日:2020-07-21

    申请号:US16544584

    申请日:2019-08-19

    摘要: Disclosed herein are a method and apparatus for monitoring UE reachability in a wireless communication system. A method for monitoring UE reachability may include receiving, by a Mobility Management Entity, a monitoring request message for UE reachability including a maximum response time from a Home Subscriber Server, detecting, by the MME, the UE reachability if it is expected that paging is able to be transmitted to UE when extended Discontinuous Reception is applied to the UE, and sending, by the MME, a UE reachability notification to a Service Capability Exposure Function before a next paging occasion of the UE, wherein the maximum response time may indicate a time during which the UE maintains a reachable state so that downlink data is reliably delivered to the UE, and wherein an occasion when the UE reachability notification is transmitted may be determined by taking into consideration the maximum response time.