Terminal and relay device
AssigneeDenso Corporation
InventorsKazuoki Matsugatani, Masumi Egawa, Jun Kosai
Life of this patent
Estimating the term…
Abstract
A terminal has a radio device TD1 for connection by radio communication, a terminal router CR1, and terminal segment C.1. The radio device TD1 uses a temporary terminal address while being connected to the same base transceiver station segment B.x. In the terminal segment C.1, an application uses a constant terminal specific address. The terminal router CR1 informs a base transceiver station gateway, which relays the communication data and exchange the path information with the data relay devices on the Internet, of the path information that the data communication to the terminal specific address goes through the temporary terminal address.
Claims14
A terminal for conducting data communication with a server on a wide area network by being connected to a base transceiver station using radio communication through a base transceiver station segment to which the base transceiver station belongs, the terminal comprising:
- a radio network interface for connection using said radio communication;
- data communication processing means for conducting a process for the data communication;
- a temporary terminal address which changes when the radio network interface changes the base transceiver station segment to be connected from one to an other, and serving as an address for said radio network interface;
- and
- a terminal specific address which is constant when the radio network interface changes the base transceiver station segment to be connected from the one to the other, wherein the terminal specific address is used by the data communication processing means,
- wherein the terminal informs a data relay device, which serves for administrating a path for the data communication by exchanging path information for delivery of the communication data to a destination, of path information denoting a data communication path to the terminal specific address that goes through the temporary terminal address.
A base transceiver station data relay device for exchanging path information for delivery of communication data to a destination with a data relay device for relaying data communication, the base transceiver station data relay device comprising:
- means for deleting path information for a terminal conducting data communication with a server on a wide area network through a base transceiver station segment to which a base transceiver station, with which the terminal communicates using radio communication, belongs, having a temporary terminal address being changed when changing the base transceiver station segment to be connected from one to an other, and having a terminal specific address which is constant even when changing the base transceiver station segment to be connected from the one to the other, wherein the path information denotes a path to the terminal that goes through the temporary terminal address that is before changing the base transceiver station segment, and the path information is deleted when a predetermined time elapses after the temporary terminal address is changed by changing the base transceiver station segment;
- and
- means for forwarding a communication data, which is delivered to the base transceiver station data relay device by addressing to an old temporary terminal address of the terminal after the terminal moves to a next base transceiver station segment, to the latest temporary terminal address of the terminal.
Dependencies are inferred from the claim text.