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Packet transfer method for hierarchical packet network, hierarchical packet communication system, and gate node, edge node and mobile terminal for use with hierarchical packet communication system, as well as handover method and routing node for packet network

  • US 20030026241A1
  • Filed: 09/28/2001
  • Published: 02/06/2003
  • Est. Priority Date: 04/27/2001
  • Status: Abandoned Application
First Claim
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1. A packet transfer method for a hierarchical packet network which includes a plurality of edge nodes capable of communicating with a mobile terminal to transmit or receive a packet to or from said mobile terminal and a gate node capable of managing current position information of said mobile terminal and routing a packet destined for said mobile terminal based on the current position information to a resident edge node from among said edge nodes with which said mobile terminal can communicate from a current position thereof, wherein said gate node reports the current position information of said mobile terminal managed by said gate node as cache information to a communicating edge node from among said edge nodes which routes a packet destined for said mobile terminal to said gate node, and the communicating edge node performs routing of a packet destined for said mobile terminal to the resident edge node based on the cache information in place of said gate node.

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