Core node, base station, radio terminal, communication method, radio resource allocation method, base station selection method, and readable medium
The present disclosure aims to provide a core node capable of appropriately allocating a radio resource of a RAN Slice allocated for a specific service to a radio terminal that uses this specific service. A core node ( 10 ) according to the present disclosure includes: a determination unit ( 14 ) configured to determine a radio resource to be allocated in accordance with a service provided for a radio terminal ( 30 ) and a communication unit ( 12 ) configured to transmit resource identification information indicating the radio resource determined in the determination unit ( 14 ) to a base station ( 20 ) that manages a plurality of radio resources for each RAN Slice associated with a service.
1. A base station in a mobile communication system, the base station comprising:
a memory that stores a set of instructions; and
a processor configured to execute the set of instructions that when executed:
receives an Initial Context Setup Request message from a core node,
sends an Initial Context Setup Response message to the core node, when the base station determines that the base station successfully allocates resources related to a network slice ID based on the Initial Context Setup Request message, and
sends broadcast information including the slice ID to a UE (User Equipment) over BCCH (Broadcast Control Channel).
2. The base station of claim 1 , wherein the core node performs a mobility management of the UE.
3. The base station of claim 1 , wherein the network slice ID is managed by the base station.
4. A method of a base station in a mobile communication system, the method comprising:
receiving an Initial Context Setup Request message from a core node;
sending an Initial Context Setup Response message to the core node, when the base station determines that the base station successfully allocates resources related to a network slice ID based on the Initial Context Setup Request message; and
sending broadcast information including the slice ID to UE (User Equipment) over BCCH (Broadcast Control Channel).
5. The method of claim 4 , wherein the core node performs a mobility management of the UE.
6. The method of claim 4 , wherein the network slice ID is managed by the base station.
7. A UE (User Equipment) in a mobile communication system, the UE comprising:
a memory that stores a set of instructions; and
a processor configured to execute the set of instructions that when executed:
stores a first network slice ID in the UE,
receives a second network slice ID from a base station over BCCH (Broadcast Control Channel), and
determines whether or not the UE uses a network slice based on the first network slice ID and the second network slice ID.
8. The UE of claim 7 , wherein the UE pre-configures the first network slice ID.
9. A method of a UE (User Equipment) in a mobile communication system, the method comprising:
storing a first network slice ID in the UE;
receiving a second network slice ID from a base station over BCCH (Broadcast Control Channel); and
determining whether or not the UE uses a network slice based on the first network slice ID and the second network slice ID.
10. The method of claim 9 , wherein the UE pre-configures the first network slice ID.