COMMUNICATIONS SYSTEM, COMMUNICATIONS METHOD, NETWORK MANAGER, AND TRANSFER DEVICE

• US 20080008184A1
• Filed: 09/05/2007
• Published: 01/10/2008
• Est. Priority Date: 03/01/2002
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Jo, Manhee, HAYASHI, Yasuhisa, Yabusaki, Masami, Ihara, Takeshi
• Granted Patent: US 7,818,363 B2
• Time in Patent Office: Days
• US Class Current: 370/392
• CPC Class Codes: H04L 41/00 Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 45/42 Centralised routing
• CPC Class Codes: H04L 61/00 Network arrangements, protocols or services for addressing or naming
• CPC Class Codes: H04L 61/50 Address allocation
• CPC Class Codes: H04W 8/16 selectively restricting mobility data tracking
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]

Abstract

A communications system which allows data transfer not using a terminal ID assigned by an access network but using routing information distinct from the terminal ID is provided. The communications system transmits data including, as a destination address, a second terminal ID, from a first terminal to the second terminal via a plurality of transfer devices. A first transfer device includes a first memory for storing the second terminal ID and routing information for routing the data to a second transfer device, associating them with one another, and a routing processor for adding to the data the routing information for routing the data to the second transfer device associated with the second terminal ID included in the data, and transferring the data to the second transfer device.

Claims

1. A communications system for transmitting data including, as a destination address, a second terminal ID, from a first terminal to a second terminal via a plurality of transfer devices, the system comprising:

a first transfer device connected to the first terminal, the first transfer device comprising;

a first memory configured to store the second terminal ID and routing information for routing the data to a second transfer device connected to the second terminal, associating them with one another; and

a routing processor configured to add to the data the routing information associated with the second terminal ID included in the data received from the first terminal, and to transfer the data to the second transfer device.

2. A communications method of transmitting data including, as a destination address, a second terminal ID, from a first terminal to a second terminal via a plurality of transfer devices, the method comprising the step of:

A) adding to the data, at a first transfer device which is connected to the first terminal and stores the second terminal ID and routing information for routing the data to a second transfer device to which the second terminal is connected, associating them with one another, the routing information for routing the data to the second transfer device associated with the second terminal ID included in the data, and transferring the data to the second transfer device.