Partner node migration control unit and method

• US 7,158,513 B2
• Filed: 06/25/2002
• Issued: 01/02/2007
• Est. Priority Date: 02/10/1992
• Status: Expired due to Fees

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Wada, Hiromi, Yozawa, Takashi, Ohnishi, Tatsuya
• Primary Examiner(s): Duong; Frank
• Application Number:
  US10/179,873
• Publication Number:
  US 20020167927A1
• Time in Patent Office: 1,652 Days
• Field of Search: 370328-339, 370/389, 370400-401, 370465-475, 455/432, 455/435, 709245-246, 709/223
• US Class Current: 370/389
• CPC Class Codes: H04L 61/00 Network arrangements, protocols or services for addressing or naming
• CPC Class Codes: H04L 61/25 of the same type
• CPC Class Codes: H04L 61/2503 Translation of Internet protocol [IP] addresses
• CPC Class Codes: H04L 61/255 Maintenance or indexing of mapping tables
• CPC Class Codes: H04L 61/5007 Internet protocol [IP] addresses
• CPC Class Codes: H04L 61/5084 Providing for device mobility network addressing or numbering for mobility support in wireless networks H04W8/26; mobile IP H04W80/04
• CPC Class Codes: H04W 36/0011 for data sessions of end-to-end connection
• CPC Class Codes: H04W 36/0019 adapted for mobile IP [MIP]
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• 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]
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 88/16 Gateway arrangements

Abstract

A partner node migration control unit that permits a communication control device, for example of the type carried by a user, to efficiently move across a network, whereby a mobile node can obtain an address assigned to each network and a partner node, which is a communication partner of the mobile node. The migration communication control device, including an address post message receiving unit receiving an address post message indicating the update address of the mobile node from a packet transfer migration control unit. In turn, the packet transfer migration control unit can transmit an updated address of the mobile node to the partner node. A packet conversion unit converts a destination address of the packet to be transmitted to the mobile node into an update address, indicated by the address post message.

Claims

1. A partner node migration control unit in a migration communication control device, the migration communication control device being constructed to control a communication between a mobile node which migrates across networks and obtains an address assigned on each network and a partner node which is a communication partner of the mobile node, being placed on the mobile node and comprising:

address post message receiving means for receiving an address post message which indicates an updated address of the mobile node from a packet transfer migration control unit, the packet transfer migration control unit transmitting an address post message which indicates the updated address of the mobile node to the partner node; and

packet conversion means for converting a destination address of a packet, the packet to be transmitted to the mobile node, into the updated address indicated by the address post message, and transmitting to the mobile node.

2. The partner node migration control unit of claim 1, further comprising:

address post means for transmitting an address post message which indicates the updated address of the mobile node.

3. A partner node migration control unit in a migration communication control device, the migration communication control device being constructed to control a communication between a mobile node which migrates across networks and obtains an address assigned on each network and a partner node which is a communication partner of the mobile node, being placed on the mobile node and comprising:

an address post message receiving unit for receiving an address post message which indicates an updated address of the mobile node from a packet transfer migration control unit, the

packet transfer migration control unit transmitting an address post message which indicates the updated address of the mobile node to the partner node; and

a packet conversion unit for converting a destination address of a packet, the packet to be transmitted to the mobile node, into the updated address indicated by the address post message, and transmitting to the mobile node.

4. The partner node migration control unit of claim 3, further comprising:

an address post unit for transmitting an address post message which indicates the updated address of the mobile node.

5. A method of transferring a packet in a migration communication control system which is constructed to control a communication between a mobile node and a partner node, with a packet transfer migration control unit, when the mobile node migrates across a plurality of networks and obtains addresses assigned by each network, 20 and the packet transfer migration control unit can transmit an address past message which indicates an updated address of the mobile node when the mobile node migrates across a network assigning the mobile node a new address, comprising the steps of

transmitting a packet at a first address to the mobile node from the partner node;

receiving an address post message at the partner node when the first address is updated;

converting the first address to a second destination address indicated by the address post message; and

transmitting from the partner node the packet with the second destination address.