Communication system, method, and apparatus

Abstract

A core network includes a plurality of nodes that serve as nodes managing mobility of a terminal and that are different with regards to service functions that nodes provide to the terminal, Based on subscriber information and terminal information, a node to be connected to the terminal is selected on the core network side, depending on a service characteristic utilized by the terminal or on a type of the terminal and the terminal is connected to the selected node.

1 - 25 . (canceled) 
     
     
         26 . A communication system, comprising:
 a terminal;   a radio access network node; and   a core network including a core network node, and   wherein the terminal further includes a transmitter that transmits a request message including an information for identifying a core network for a specific service within a PLMN (Public Land Mobile Network) and an Attach Request message, and   wherein the radio access network node further includes at least one processor configured to process to:
 receive the request message and the Attach Request message, 
 select a core network node in the core network for the specific service based on the information included in the request message, and 
 transmit the Attach Request message to the core network node. 
   
     
     
         27 . A communication method, comprising:
 transmitting, by a terminal, a request message including an information for identifying a core network for a specific service within a PLMN (Public Land Mobile Network) and an Attach Request message;   receiving, by a radio access network node, the request message and the Attach Request message;   selecting, by the radio access network node, a core network node in the core network for the specific service based on the information included in the request message; and   transmitting, by the radio access network node, the Attach Request message to the core network node.   
     
     
         28 . A radio access network node, comprising at least one processor configured to process to:
 receive a request message including an information for identifying a core network for a specific service within a PLMN (Public Land Mobile Network) and an Attach Request message,   select a core network node in the core network for the specific service based on the information included in the request message, and   transmit the Attach Request message to the core network node.   
     
     
         29 . A communication method, comprising:
 receiving a request message including an information for identifying a core network for a specific service within a PLMN (Public Land Mobile Network) and an Attach Request message;   selecting a core network node in the core network for the specific service based on the information included in the request message; and   transmitting the Attach Request message to the core network node.   
     
     
         30 . A terminal comprising at least one processor configured to process to:
 store an information for identifying a core network for a specific service within a PLMN (Public Land Mobile Network),   transmit a request message including the information and an Attach Request message to a radio access network node,   wherein in the case that the request message is transmitted to the radio access network node, the radio access network node selects a core network node in the core network for the specific service based on the information included in the request message, and   wherein in the case that the Attach Request message is transmitted to the radio access network node, the radio access network node transmits the Attach Request to the core network node.   
     
     
         31 . A communication method, comprising:
 storing an information for identifying a core network for a specific service within a PLMN (Public Land Mobile Network);   transmitting a request message including the information and an Attach Request message to a radio access network node,   wherein in the case that the request message is transmitted to the radio access network node, the radio access network node selects a core network node in the core network for the specific service based on the information included in the request message, and   wherein in the case that the Attach Request message is transmitted to the radio access network node, the radio access network node transmits the Attach Request to the core network node.