Fast path packet destination mechanism for network mobility via secure pki channel

Abstract

Disclosed is a method for reducing routing overheads during data transmission to a destination mobile router of a plurality of mobile routers roaming in a network. The method comprises registering by top level mobile routers with a central authority server, sending data packets by a corresponding node of the network to the destination mobile router operationally attached to a corresponding top level mobile router, locating a position of the destination mobile router by identifying attachment of the destination mobile router to the corresponding top level mobile router from the information registered by the plurality of mobile routers with the central authority server, routing the data packet directly to the corresponding top level mobile router to which the destination mobile router is operationally attached and receiving the data packet by the destination mobile router from the corresponding top level mobile router, thereby reducing routing overheads in the network.

1 . A routing system using a NEtwork MObility (NEMO) protocol, the routing system comprising:
 a plurality of mobile routers capable of roaming in a network, the plurality of mobile routers comprising at least one top level mobile router coupled to the network via an access router; and   a central authority server configured to store information about the top level mobile routers and any mobile routers operationally attached to each of the top level mobile routers,   wherein a corresponding node is configured to determine a position of a destination mobile router based on the information stored with the central authority server and to route data packets directly to the destination mobile router through a corresponding top level mobile router using the information stored with the central authority server, thereby reducing routing overheads in the network.   
     
     
         2 . The routing system of  claim 1 , wherein each of the plurality of mobile routers is configured to use Internet Protocol Security (IPSec) Encapsulating Security Payload (ESP) protected bi-directional tunnel for transferring data packets. 
     
     
         3 . The routing system of  claim 1 , wherein storing information about the top level mobile routers and the mobile routers operationally attached to each of the top level mobile routers is done periodically. 
     
     
         4 . The routing system of  claim 1 , wherein the central authority server is an Internet Service Provider (ISP). 
     
     
         5 . A method comprising:
 storing, by a central authority server, information about each of at least one top level mobile router and any mobile routers operationally attached to each top level mobile router of a plurality of mobile routers in a network;   locating a position of a destination mobile router for receiving a data transmission based on the information stored by the central authority server; and   routing the data packets directly to a corresponding top level mobile router to which the destination mobile router is operationally attached, thereby reducing routing overheads in the network.   
     
     
         6 . The method of  claim 5 , wherein the network is compatible with a NEtwork MObility (NEMO) protocol. 
     
     
         7 . The method of  claim 5 , wherein each of the plurality of mobile routers use Internet Protocol Security (IPSec) Encapsulating Security Payload (ESP) protected bi-directional tunnel for transferring data packets. 
     
     
         8 . The method of  claim 7 , wherein the Internet Protocol Security Encapsulating Security Payload is capable of using cryptography when the plurality of data packets are sent and received by each of the plurality of mobile routers. 
     
     
         9 . The method of  claim 5 , wherein the storing by the central authority server is done periodically. 
     
     
         10 . The method of  claim 5 , wherein the central authority server is an Internet Service Provider (ISP). 
     
     
         11 . The method of  claim 5 , wherein the network is a wireless network. 
     
     
         12 . The method of  claim 11 , wherein the wireless network is one of a Global System (GSM) network, a Code Division Multiple Access (CDMA) network, and a Wireless Fidelity (WiFi) network. 
     
     
         13 . A computer program product embodied on a tangible computer readable medium, which when executed by a processor, cause the processor to perform operations, the computer program product comprising a program module having instructions for:
 storing, by a central authority server, information about each of at least one top level mobile router and any mobile routers operationally attached to each top level mobile router of a plurality of mobile routers in a network;   locating a position of a destination mobile router for receiving a data transmission based on the information stored by the central authority server; and   routing the data packets directly to a corresponding top level mobile router to which the destination mobile router is operationally attached, thereby reducing routing overheads in the network.   
     
     
         14 . The computer program product of  claim 13 , wherein the network is compatible with a NEtwork MObility (NEMO) protocol. 
     
     
         15 . The computer program product of  claim 13 , wherein each of the plurality of mobile routers use Internet Protocol Security (IPSec) Encapsulating Security Payload (ESP) protected bi-directional tunnel for transferring data packets. 
     
     
         16 . The computer program product of  claim 15 , wherein the Internet Protocol Security Encapsulating Security Payload is capable of using cryptography when the plurality of data packets are sent and received by each of the plurality of mobile routers. 
     
     
         17 . The computer program product of  claim 13 , wherein the storing by the central authority server is done periodically. 
     
     
         18 . The computer program product of  claim 13 , wherein the central authority server is an Internet Service Provider (ISP). 
     
     
         19 . The computer program product of  claim 13 , wherein the network is a wireless network. 
     
     
         20 . The computer program product of  claim 19 , wherein the wireless network is one of a Global System (GSM) network, a Code Division Multiple Access (CDMA) network, and a Wireless Fidelity (WiFi) network.