Abstract:
The present invention relates to a wireless communication system, and more particularly, a method and apparatus for handover of packet-switched service are disclosed. The method for handover of packet-switched (PS) service by a terminal according to one embodiment of the present invention comprises the steps of: transmitting a message, including information for notifying of a handover of one or more PS services to a second access network, to a network node during the performance of circuit-switched fallback (CSFB) on a first access network; performing the handover of said one or more PS services to the second access network; and establishing a voice call as a result of performing the CSFB.
Abstract:
The present invention relates to a method for a base station to control a proximity service (ProSe) in a wireless communication system including the steps of: tracking at least two or more terminals which camp on the base station and have a ProSe relationship with each other on a direct data path; and determining whether to switch the direct data path in the case where one or more terminals from among the two or more terminals try to perform a handover or in the case where the distance between the two or more terminals is equal to or greater than a preset value.
Abstract:
The present invention relates to a wireless communication system, and more particularly, to a method and an apparatus for processing a NAS signaling request. A method for performing a non-access stratum (NAS) signaling process by means of a terminal in a wireless communication system according to one embodiment of the present invention comprises: a step of receiving a first message that includes information indicating a network failure from a network node of a first network; a step of starting a timer relating to a network selection; and a step of selecting a second network from among network candidates excluding the first network during the operation of the timer relating to a network selection.
Abstract:
The present invention relates to a wireless communication system, and more specifically, to a method and apparatus for performing or supporting inter-UE transfer (IUT). The method for performing a IUT operation with first user equipment (UE) or second UE by means of an Internet protocol multimedia subsystem (IMS) network node includes the steps of: receiving, from a remote end, a message including IUT restriction-related information on the remote end; receiving a message including an IUT request from the first UE; and determining whether or not to perform the IUT operation according to the IUT request on the basis of the OUT restriction-related information on the remote end.
Abstract:
One embodiment of the present invention discloses a method for allowing a serving node to support a trigger request of a machine type communication-interworking function (MTC-IWF) in a wireless communication system, and the method for supporting the trigger request comprises the steps of: receiving, from a terminal, capability information which contains information on trigger transmission; and determining whether to transmit the information on the trigger transmission to a home subscriber server (HSS)/home location register (HLR), based on the information related to the terminal, which contains the capability information, and information related to the serving node, wherein the information on the trigger transmission contains information indicating whether the terminal supports a trigger request through the MTC-IWF and the serving node.
Abstract:
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.
Abstract:
A disclosure of the present specification provides a method performed by a network node that manages mobility in a first public land mobile network (PLMN). The network node may receive an access request message of a terminal from a base station in the first PLMN. The terminal may be a terminal having joined a second PLMN. On the basis of occurrence of a failure in the second PLMN, the network node may determine whether to allow the terminal to roam to the first PLMN.
Abstract:
Provided are a method and device for efficient public land mobile network (PLMN) selection upon authentication failure for each network slice in a roaming network. A user equipment (UE) receives a registration rejection message from an access and mobility management function (AMF) of a first PLMN. The registration rejection message includes rejected network slice selection assistance information (NSSAI) including first single NSSAI (S-NSSAI) and cause value #62 for the rejected NSSAI. The UE: generates second requested NSSAI including second S-NSSAI on the basis that i) the UE does not have allowed NSSAI and configured NSSAI, and ii) default configured NSSAI includes the second S-NSSAI that is not included in the rejected NSSAI and corresponds to a network slice of which the UE requests registration; and transmits a second registration request message including the second requested NSSAI to the AMF of the first PLMN.
Abstract:
One disclosure of the present specification provides a method for operating in relay user equipment (UE). The method may comprise the steps of: receiving a communication request message directly from a first remote UE; performing a procedure for establishing an access and mobility management function (AMF) entity and a protocol data unit (PDU) session; and storing mapping information between an identifier of a PC5 link with the first remote UE and an identifier of the PDU session on the basis of the PDU session being established for an unstructured PDU session type for unstructured traffic.
Abstract:
An embodiment provides a method comprising the steps of: receiving, by an NG-RAN, a PDU session-related message including a Qos profile and two or more alternative QoS profiles, which relate to a QoS flow; determining whether the QoS profile can satisfy the QoS flow; transmitting, to an SMF, a first notification indicating that the QoS profile does not satisfy the QoS flow; determining whether the two or more alternative QoS profiles can satisfy the QoS flow; and transmitting, to the SMF, a second notification indicating that the alternative QoS profiles satisfy the QoS flow, wherein the second notification includes information about an alternative Qos profile capable of satisfying the QoS flow, among the two or more alternative QoS profiles.