Network node, communication method, program, and recording medium

Abstract

In order to prevent deterioration of QoE of a user in intersystem handover, an apparatus according to the present invention includes: an information obtaining unit configured to obtain network slice related information related to a network slice used by a terminal apparatus in a first radio communication system; and a first communication processing unit configured to transmit, to a second network node of a second radio communication system, a message for intersystem handover of the terminal apparatus from the first radio communication system to the second radio communication system, the message including the network slice related information.

What is claimed is: 
     
         1 . A network node of core network of a 4G communication system, comprising:
 a memory storing instructions; and   one or more processors configured to execute the instructions to:   receive a first message from Mobile Management Entity (MME) of the 4G communication system; and   transmit a second message to the MME in response to the first message,   wherein the second message includes information of network slice of a 5G communication system,   wherein the information of network slice includes information identifying the network slice and information indicating Quality of Service (QoS) of the network slice.   
     
     
         2 . A Mobile Management Entity (MME) of a 4G communication system, comprising:
 a memory storing instructions; and   one or more processors configured to execute the instructions to:   transmit a first message to a network node of the 4G communication system; and   receive a second message from the network node in response to the first message,   wherein the second message includes information of network slice of a 5G communication system,   wherein the information of network slice includes information identifying the network slice and information indicating Quality of Service (QoS) of the network slice.   
     
     
         3 . A method of a network node of core network of a 4G communication system, comprising:
 receiving a first message from Mobile Management Entity (MME) of the 4G communication system; and   transmitting a second message to the MME in response to the first message,   wherein the second message includes information of network slice of a 5G communication system,   wherein the information of network slice includes information identifying the network slice and information indicating Quality of Service (QoS) of the network slice.