Terminal apparatus, base station apparatus, mobility management entity (MME), and communication control method
View Patent ↗Provided is a communication procedure for data transmission and/or reception suitable for a Network Slice and a DeCOR. One or a plurality of Network Slices are included in a core network managed by the network operator, the Network Slice is configured of one or a plurality of Network Functions, and based on registration information of a terminal apparatus or a request of the terminal apparatus, the terminal apparatus performs processing to connect to the one or the plurality of Network Slices corresponding to a service or an application. Furthermore, based on an authentication result from the network, the terminal apparatus performs processing to connect to a supplemental Network Slice.
1. A User Equipment (UE) comprising:
transmission and reception circuitry; and
a controller configured to control the transmission and reception circuitry to:
receive first information for Network Slice selection;
transmit a first request message for establishing a data network session in a first Network Slice, the first request message including at least a portion of the first information;
in an initial connectivity procedure,
transmit a first Radio Resource Control (RRC) message to a base station apparatus, the first RRC message including second information for selecting a second Network Slice;
transmit a second request message to a core network via the base station apparatus, the second request message including the second information for selecting the second Network Slice;
receive a first accept message from the core network via the base station apparatus, the first accept message including a Global Unique Temporary Identifier (GUTI) and third information for selecting a third Network Slice allowed by the core network,
wherein the core network determines the third information based on the second information;
transmit a first complete message to the core network via the base station apparatus;
in a procedure for updating a Tracking Area,
transmit a second RRC message to the base station apparatus, the second RRC message including fourth information for selecting a fourth Network Slice;
transmit a third request message to a first control apparatus in the core network via the base station apparatus, the third request message including the GUTI and the fourth information for selecting the fourth Network Slice; and
receive a second accept message from the core network via the base station apparatus, the second accept message including fifth information for selecting a fifth Network Slice allowed by the core network,
wherein:
the first control apparatus obtains mobility management context of the UE from a second control apparatus, the second control apparatus managing a Network Slice based on the second information; and
the UE does not periodically transmit the third request message.
2. The UE according to claim 1 , wherein the data network session is a first session and the controller is further configured to cause the UE to:
establish the first session in the first Network Slice; and
establish a second session in a sixth Network Slice.
3. The UE according to claim 1 , wherein the first information comprises unique identification information among mobile network operators, public land mobile networks (PLMNs), or mobile network operators and PLMNs.
4. The UE according to claim 1 , wherein the first information comprises unique identification information within a mobile operator or a public land mobile network.
5. The UE according to claim 1 , wherein the first information comprises a Network Slice Type for Internet of Things.
6. The UE according to claim 1 , further comprising:
memory configured to store one or more Application identities corresponding to the first information.
7. The UE according to claim 1 , wherein the second request message comprises information indicating that the UE is capable of connecting to one or more Network Slices.
8. The UE according to claim 1 , wherein the controller is further configured to control the transmission and reception circuitry to:
transmit an authentication message; and
receive an activation message.
9. A communication method comprising:
receiving first information for Network Slice selection;
transmitting a first request message for establishing a data network session in a first Network Slice, the first request message including at least a portion of the first information;
in an initial connectivity procedure,
transmitting a first Radio Resource Control (RRC) message to a base station apparatus, the first RRC message including second information for selecting a second Network Slice;
transmitting a second request message to a core network via the base station apparatus, the second request message including the second information for selecting the second Network Slice;
receiving a first accept message from the core network via the base station apparatus, the first accept message including a Global Unique Temporary Identifier (GUTI) and third information for selecting a third Network Slice allowed by the core network,
wherein the third information is determined based on the second information;
transmitting a first complete message to the core network via the base station apparatus;
in a procedure for updating a Tracking Area,
transmitting a second RRC message to the base station apparatus, the second RRC message including fourth information for selecting a fourth Network Slice;
transmitting a third request message to a first control apparatus in the core network via the base station apparatus, the third request message including the GUTI and the fourth information for selecting the third Network Slice; and
receiving a second accept message from the core network via the base station apparatus, the second accept message including fifth information for selecting a fifth Network Slice allowed by the core network,
wherein:
the GUTI is used for the first control apparatus to obtain mobility management context of the UE from a second control apparatus, the second control apparatus managing a Network Slice based on the second information; and
the third request message is not periodically transmitted.
10. The communication method according to claim 9 , wherein the data network session is a first session, the communication method further comprising:
establishing the first session in the first Network Slice; and
establishing a second session in a sixth Network Slice.
11. The communication method according to claim 9 , wherein the first information comprises unique identification information among mobile network operators, public land mobile networks (PLMNs), or mobile network operators and PLMNs.
12. The communication method according to claim 9 , wherein the first information comprises unique identification information within a mobile operator or a public land mobile network.
13. The communication method according to claim 9 , wherein the first information comprises a Network Slice Type for Internet of Things.
14. The communication method according to claim 9 further comprising:
storing one or more Application identities corresponding to the first information.
15. The communication method according to claim 9 , wherein the second request message comprises information indicating that the UE is capable of connecting to one or more Network Slices.
16. The communication method according to claim 9 , further comprising:
performing an authentication procedure; and
receiving an activation message.