Apparatus and method for supporting slice interworking
AssigneeSamsung Electronics Co., Ltd.
InventorsSangsoo Jeong, Hoyeon Lee
Life of this patent
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Abstract
The present disclosure relates to a communication technique for combining, with IoT technology, a 5G communication system for supporting a higher data transmission rate than a 4G system, and to a system therefor. The present disclosure may be applied to intelligent services, such as smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail, and security and safety related services, on the basis of 5G communication technologies and IoT-related technologies. The present disclosure relates to a method and an apparatus for providing service continuity when communication is switched from one wireless access network to another in a system in which a plurality of wireless communication technologies can interwork.
Claims15
A method performed by a first network function entity (SMF+PGW-C) including a session management function (SMF) and a control plane function (PGW-C) of a packet data network gateway (PGW) in a wireless communication system, the method comprising:
- receiving, from a mobility management entity (MME), a first message requesting packet data network (PDN) connection establishment;
- selecting a network slice related to the PDN connection establishment;
- transmitting, to a second network function entity for a management on network slice admission, a second message requesting to check an availability of the network slice;
- receiving, from the second network function entity, a third message including information on the availability of the network slice;
- and
- transmitting, to the MME, a fourth message including a response to the PDN connection establishment based on the third message,
- wherein the second message comprises an ID of the terminal requesting the PDN connection establishment.
A method performed by a second network function entity for performing management of network slice admission in a wireless communication system, the method comprising:
- receiving a first message requesting to check an availability of a network slice from a first network function entity (SMF+PGW-C) comprising a session management function (SMF) and a control plane function (PGW-C) of a packet data network gateway (PGW);
- checking the availability of the network slice based on a terminal ID included in the first message, the number of terminals registered in the network slice, and the number of current PDU sessions of the network slice;
- and
- transmitting, to the first network function entity, a second message including information on the availability of the network slice,
- wherein the network slice is related to a packet data network (PDN) connection establishment request from a mobility management entity (MME),
- the terminal ID included in the first message is an ID of a terminal requesting the PDN connection establishment, and
- the PDN connection of the first network function entity and the MME is established based on the second message.
A first network function entity (SMF+PGW-C) including a session management function (SMF) and a control plane function (PGW-C) of a packet data network gateway (PGW) in a wireless communication system, the first network function entity (SMF+PGW-C) comprising:
- a transceiver configured to transmit and receive a signal;
- and
- a controller connected to the transceiver,
- wherein the controller is configured to:
- receive, from a mobility management entity (MME), a first message requesting packet data network (PDN) connection establishment,
- select a network slice related to the PDN connection establishment,
- transmit, to a second network function entity for a management on network slice admission, a second message requesting to check an availability of the network slice,
- receive, from the second network function entity, a third message including information on the availability of the network slice, and
- transmit, to the MME, a fourth message including a response to the PDN connection establishment based on the third message,
- wherein the second message comprises an ID of the terminal requesting the PDN connection establishment.
A second network function entity for performing management of network slice admission in a wireless communication system, the second network function entity comprising:
- a transceiver configured to transmit and receive a signal;
- and
- a controller connected to the transceiver,
- wherein the controller is configured to:
- receive, from a first network function entity (SMF+PGW-C) comprising a session management function (SMF) and a control plane function (PGW-C) of a packet data network gateway (PGW), a first message requesting to check an availability of a network slice,
- check the availability of the network slice based on a terminal ID included in the first message, the number of terminals registered in the network slice, and the number of current PDU sessions of the network slice, and
- transmit, to the first network function entity, a second message including information on the availability of the network slice,
- wherein the network slice is related to a packet data network (PDN) connection establishment request from a mobility management entity (MME),
- the terminal ID included in the first message is an ID of the terminal requesting the PDN connection establishment, and
- the PDN connection of the first network function entity and the MME is established based on the second message.
Dependencies are inferred from the claim text.