METHOD FOR REPLACING MOBILE ROUTER IN MOBILE INTERNET SERVICE SYSTEM HAVING MULTIPLE MOBILE ROUTERS

• US 20070291697A1
• Filed: 06/22/2007
• Published: 12/20/2007
• Est. Priority Date: 12/23/2004
• Status: Abandoned Application

• Current Assignee: KT Corporation
• Original Assignee: KT Corporation
• Inventors: KIM, SANG-EON, KIM, HAN-LIM, PAIK, EUN-KYOUNG
• Application Number:
  US11/767,332
• Publication Number:
  US 20070291697A1
• Time in Patent Office: Days
• US Class Current: 370/331
• CPC Class Codes: H04L 2101/668 Internet protocol [IP] address subnets
• 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 61/00 Network arrangements, protocols or services for addressing or naming
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06
• CPC Class Codes: H04W 24/04 Arrangements for maintaining operational condition
• CPC Class Codes: H04W 40/00 Communication routing or communication path finding
• 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 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]
• CPC Class Codes: H04W 84/005 Moving wireless networks

Abstract

Provided is a method for replacing a function of mobile router for a mobile Internet service in a multiple mobile router and multiple prefix structure. The method includes the steps of: at a second mobile router, detecting a malfunction of a first mobile router using a router notifying interval of the first mobile router when the first mobile router is malfunctioned; at the second mobile router, notifying the prefix of the first mobile router through the ingress Internet interface of the second mobile router; and at the second mobile router, registering prefix binding information of the first mobile router to the home agent through the egress Internet interface of the second mobile router.

Claims

1. A method for replacing a function of mobile router in a mobile Internet service system having multiple mobile routers that receives a request for setting a mobile network address from multiple mobile Internet terminals, sets an address using prefixes of multiple mobile routers through an ingress Internet interface, sets a temporal address (care-of-address) of a moving location through an egress Internet interface and registering the temporal address to a home agent through the Internet, the method comprising:

at a second mobile router, detecting a malfunction of a first mobile router using a router notifying interval of the first mobile router when the first mobile router is malfunctioned;

at the second mobile router, notifying the prefix of the first mobile router through the ingress Internet interface of the second mobile router; and

at the second mobile router, registering prefix binding information of the first mobile router to the home agent through the egress Internet interface of the second mobile router.

2. The method as recited in claim 1, wherein the multiple mobile router stores information about a router notifying period and a prefix of the other mobile routers in a same mobile network.

3. The method as recited in claim 1, wherein the multiple mobile router uses the stored information about the prefix and the notifying period to detect the malfunction of other mobile router.

4. The method as recited in claim 3, wherein the second mobile router allows the mobile Internet terminal not to reconfigure an IP address although the mobile Internet terminal configures the IP address using the prefix notified by the first mobile router by detecting the malfunction of the first mobile router if the first mobile router does not notify at the notifying period of the first mobile router and performing the functions of the first mobile router by storing the information about the prefix and the router notifying period of the first mobile router.

5. A computer readable recoding medium storing instructions to perform a method for replacing a function of mobile router in a mobile Internet service system having multiple mobile routers that receives a request for setting a mobile network address from multiple mobile Internet terminals, sets an address using prefixes of multiple mobile routers through an ingress Internet interface, sets a temporal address (care-of-address) of a moving location through an egress Internet interface and registering the temporal address to a home agent through the Internet, the method comprising:

at a second mobile router, detecting a malfunction of a first mobile router using a router notifying interval of the first mobile router when the first mobile router is malfunctioned;

at the second mobile router, notifying the prefix of the first mobile router through the ingress Internet interface of the second mobile router; and

at the second mobile router, registering prefix binding information of the first mobile router to the home agent through the egress Internet interface of the second mobile router.