Abstract:
One embodiment of the present specification provides a method for selecting or reselecting a relay for a proximity service. The method comprises the steps of: receiving, by user equipment (UE) which is to receive a relay service, synchronization signals from a plurality of other UEs capable of operating as relays; and receiving, by the UE, announce messages from the plurality of other UEs capable of operating as the relays. Here, the announce messages from each of the other UEs can contain relay type information on whether to support a UE-to-network relay service, packet data network (PDN)/access point name (APN) information, and service/group information. The method further comprises the steps of: generating, by the UE, a candidate relay list on the basis of the relay type information, the PDN/APN information, and the service/group information within the announce messages received from the plurality of other UEs; and selecting or reselecting, by the UE, one of the other UEs within the candidate relay list in consideration of relay type, PDN/APN, and service/group information necessary for a service of the UE.
Abstract:
The present description discloses a public land mobile network (PLMN) selection method. The PLMN selection method comprises the steps of: running a first timer if a first request message has been transmitted multiple times to a first network node in a first PLMN, but a response message has not been received; selecting a second PLMN after the first timer has been started; and maintaining, without stopping, the first timer, which has been run for the first PLMN, even if a second request message has been sent to a second network node in the second PLMN, and an acceptance message for same has been received, wherein the retransmission, by reselecting the first PLMN, of the first request to the first network node in the first PLMN can be prevented until the first timer has expired.
Abstract:
The present description provides a method applicable to a network supporting a number of network modes of operation (NMOs). In the method, a user equipment (UE) in the NMO 1 receives a control signal, such as mobility management backoff timer, indicating an access restriction on packet switched (PS) domain of the network. Therefore, the UE in the NMO 1 performs location area update (LAU) procedure associated with circuit switched (CS) domain without performing combined routing area update (RAU) procedure associated with both the PS domain and the CS domain, while the access restriction is in place. The UE in the NMO 1 is configured to perform combined attach procedure, which is associated with both the PS domain and the CS domain, when attaching to the network. Further, the UE in the NMO 2 is configured to perform CS attach procedure and PS attach procedure separately, when attaching to the network.
Abstract:
A wireless communication system is disclosed. More particularly, a control method and device based on multiple priorities in a wireless communication system is disclosed. The method of controlling a back-off timer in a terminal configured with multiple priorities, which includes transmitting a first non-access stratum (NAS) request message set to a first priority level, starting the back-off timer configured by a network, and transmitting a second NAS request message, which is not set to the first priority level, while the back-off timer runs.
Abstract:
A disclosure of the present specification provides a method for performing multicast-related communication by an SMF. The method may comprise the steps of: receiving, from a UE, a join request message for requesting participation in multicast communication; transmitting, to an AMF node, an allocation request message for requesting allocation of an EBI to a unicast QoS flow corresponding to a multicast QoS flow related to the multicast communication; and receiving information of the EBI allocated to the unicast QoS flow from the AMF node.
Abstract:
The present disclosure provides a method for an AS to perform FL related communication. The method includes transmitting a request message requesting assistance information to the NF node; and receiving a response message including the derived assistance information from the NF node.
Abstract:
A method for discarding authentication of a user equipment in a wireless communication system, including: determining, by a network, authentication revocation of a first remote user equipment; determining whether or not a PDU session of a relay user equipment, which is used by the first remote user equipment, is used by another remote user equipment; and transmitting, to the relay user equipment, a release request for the PDU session of the relay user equipment or a release request for a PC5 link of the first remote user equipment.
Abstract:
One disclosure of the present specification provides a method by which a session management function (SMF) performs communication. The method comprises the steps of: sending an analytics request message to a network data analytics function (NWDAF), the request message including a data network name (DNN) and single network slice selection assistance information (S-NSSAI); receiving analytics from the NWDAF; determining a deactivation timer value on the basis of the analytics, and transmitting the deactivation timer value to a user plane function (UPF).
Abstract:
A disclosure of the present specification provides a method for performing, by a visited public land mobile network-policy control function (V-PCF), communication using edge computing. The method comprises the steps of: establishing UE policy association with a home public land mobile network-policy control function (H-PCF); receiving a first subscription message from the H-PCF; and transmitting a second subscription message to a visited public land mobile network-unified data repository (V-UDR). The first subscription message is a message that requests a notification, according to edge application server (EAS) information being updated or modified, the second subscription message is a message that requests a notification, according to the EAS information being updated or modified, the second subscription message is based on the first subscription message, and the EAS information may be information that is generated by an application function (AF) and transmitted to the V-UDR.
Abstract:
Provided in one embodiment of the present specification is a method by which an IMS AS performs communication related to a MA PDU session. The method can comprise the steps of: receiving, through a P-CSCF and a S-CSCF, a SIP registration message generated by means of UE, the SIP registration message including information that an IMS service is performed through the MA PDU session, and the SIP registration message including state information that the state of a PS data off of the UE is active; receiving, from the S-CSCF, an SIP request message for requesting the IMS service from the UE; checking whether the IMS service corresponds to an exempt service of the PS data off; including the checked result in the SIP request message; and transmitting the SIP request message to a UPF through the S-CSCF and the P-CSCF.