公开(公告)号：US20230422025A1

公开(公告)日：2023-12-28

申请号：US18122205

申请日：2023-03-16

Applicant: Hitachi, Ltd.

Inventor： Akihiro OHNUMA ,  Daisuke MASHIMO ,  Masayuki TAKASE ,  Yuji OISHI ,  Mikio KUWAHARA

IPC: H04W8/26

CPC classification number: H04W8/26 ,  G16Y20/20

Abstract: It is provided a network system that transfers data, the network system comprising: a first network; a second network connected with the first network and to which a server is connected; a third network connected with the first network and in which a terminal is accommodated; a terminal identification device, wherein the terminal identification device is configured to hold terminal identification information in which the address information of the gateway device in the first network, an identifier of the terminal, and the connection availability of the terminal to the second network are associated with each other, determine the connection availability of the terminal to the second network based on the terminal identification information, and acquire the address information of the gateway device in the first network and the identifier of the terminal from the gateway device to register or update the terminal identification information.