US 11,696,200 B2 · Method and apparatus for supporting network slice when UE moves between 4G and 5G networks

Abstract

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present disclosure relates to a method of supporting a network slice of a network and a user equipment (UE) when the UE moves between a 4G network and a 5G network in the 3GPP 5G network technology.

Claims10

Dependent claims

A method of a first access and mobility management function (AMF) for interworking between a 5G system (5GS) and an evolved packet system (EPS) in a wireless communication system, the method comprising:

receiving, from a mobility management entity (MME), a handover request message including user equipment (UE) context information;
selecting a temporary session management function (SMF) corresponding to a visited-public land mobile network (V-PLMN)(V-SMF);
transmitting, to a home-public land mobile network (H-PLMN) SMF (H-SMF) via the selected temporary V-SMF, session related information included in the UE context information;
receiving, from the H-SMF via the selected temporary V-SMF, protocol data unit (PDU) session information and network slice information, the PDU session information being associated with session related information;
and
determining a target AMF based on the network slice information;
and
transmitting, to the determined target AMF, the handover request message.

5 more elements

Dependencies are inferred from the claim text.

Method and apparatus for supporting network slice when UE moves between 4G and 5G networks

Life of this patent

Method and apparatus for supporting network slice when UE moves between 4G and 5G networks

Life of this patent

Abstract

Claims10