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 for storing an information indicating that the terminal supports for optimization of small data transfer service;   a core network node for receiving an Attach Request message including the information from the terminal, and   wherein the core network node is further configured to determine the information included in the Attach Request message, and transmit an Attach Accept message to the terminal.   
     
     
         27 . A core network node, comprising at least one processor configured to process to:
 receive, from a terminal storing an information indicating that the terminal supports for optimization of small data transfer service, an Attach Request message including the information,   determine the information included in the Attach Request message, and   transmit an Attach Accept message to the terminal.   
     
     
         28 . A terminal comprising at least one processor configured to process to:
 store an information indicating that the terminal supports for optimization of small data transfer service,   transmit an Attach Request message including the information to a core network node, and   receive an Attach Accept message from the core network node when the core network node determines the information included in the Attach Request message.   
     
     
         29 . A communication method, comprising:
 storing, by a terminal, an information indicating that the terminal supports for optimization of small data transfer service;   receiving, by a core network node, an Attach Request message including the information from the terminal;   determining, by the core network node, the information included in the Attach Request message; and   transmitting, by the core network node, an Attach Accept message to the terminal.   
     
     
         30 . A communication method, comprising:
 receiving, from a terminal storing an information indicating that the terminal supports for optimization of small data transfer service, an Attach Request message including the information;   determining the information included in the Attach Request message; and   transmitting an Attach Accept message to the terminal.   
     
     
         31 . A communication method, comprising:
 storing an information indicating that a terminal supports for optimization of small data transfer service;   transmitting an Attach Request message including the information to a core network node; and   receiving an Attach Accept message from the core network node when the core network node determines the information included in the Attach Request message.