US 7,466,674 B2Granted

Mobile communication control system, mobile communication control method, router, server and data structure

AssigneeNtt Docomo, Inc.

InventorsTakatoshi Okagawa, Manhee Jo, Katsutoshi Nishida, Noriteru Shinagawa

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Abstract

A mobile communication control method includes: converting a first address of a destination mobile terminal which is included in a packet as a destination address, to a second address of the destination mobile terminal which is associated with the first address of the destination mobile terminal, in a source router; and converting the second address of the destination mobile terminal which is included in the received packet as a destination address, to the first address of the destination mobile terminal which is associated with the second address of the destination mobile terminal, in a destination router.

Claims21

Dependent claims

A mobile communication control system comprising a server and a plurality of routers,

wherein the server comprises:
an address manager configured to manage a host address of a destination mobile terminal associated with a routing address of the destination mobile terminal;
and
an instructor configured to instruct a source router connected to a source mobile terminal via a radio circuit and a destination router connected to the destination mobile terminal via a radio circuit to store the host address of the destination mobile terminal associated with the routing address of the destination mobile terminal;
wherein the source router comprises:
a first address memory configured to store the host address of the destination mobile terminal associated with the routing address of the destination mobile terminal, in accordance with the instruction from the server;
an address converter configured to delete the host address of the destination mobile terminal which is included in a packet received from the source mobile terminal as a destination address, and add the routing address of the destination mobile terminal which is associated with the host address of the destination mobile terminal in the first address memory to the packet;
and
a routing processor configured to route the received packet to a destination router connected to the destination mobile terminal, in accordance with the routing address of the destination mobile terminal;
and wherein the destination router comprises:
a second address memory configured to store the host address of the destination mobile terminal associated with the routing address of the destination mobile terminal;
an address converter configured to delete the routing address of the destination mobile terminal which is included in the received packet as a destination address, and add the host address of the destination mobile terminal which is associated with the routing address of the destination mobile terminal in the second address memory to the packet;
and
a packet transferring processor configured to transfer the received packet to the destination mobile terminal, in accordance with the host address of the destination mobile terminal.

11 more elements

A router connected to a source mobile terminal comprising:

an inquirer configured to inquire as to a routing address of a destination mobile terminal of a server, when a first address memory does not store the routing address of the destination mobile terminal associated with a host address of the destination mobile terminal which is included in a packet received from the source mobile terminal as a destination address;
the first address memory configured to store the host address of the destination mobile terminal associated with the routing address of the destination mobile terminal, in accordance with an instruction from the server;
an address converter configured to delete the host address of the destination mobile terminal which is included in the packet received from the source mobile terminal as a destination address, and add the routing address of the destination mobile terminal which is associated with the host address of the destination mobile terminal in the first address memory to the packet;
and
a routing processor configured to route the received packet to a destination router connected to the destination mobile terminal via a radio circuit, in accordance with the routing address of the destination mobile terminal.

2 more elements

A router connected to a destination mobile terminal comprising:

a selection notifier configured to select a routing address of the destination mobile terminal which is associated with a host address of the destination mobile terminal in a second memory, and to notify the selected routing address of the destination mobile terminal to a server, when the destination mobile terminal moves into a predetermined area, or when the destination mobile terminal has changed to an active state;
the second address memory configured to store the host address of the destination mobile terminal associated with the routing address of the destination mobile terminal;
an address converter configured to delete the routing address of the destination mobile terminal which is included in a received packet as a destination address, and add the host address of the destination mobile terminal which is associated with the routing address of the destination mobile terminal in the second address memory to the packet;
and
a packet transferring processor configured to transfer the received packet to the destination mobile terminal, in accordance with the host address of the destination mobile terminal.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/666,177Filed 22 Sep 2003
Priority: JP 2002-27619620 Sep 2002
Published: US 2004/0058683 A125 Mar 2004
Granted: 16 Dec 2008
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04W 8/082
Mobility data transfer: for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
H04L 61/00
Network arrangements, protocols or services for addressing or naming
H04L 61/2539
Translation of Internet protocol [IP] addresses: hiding addresses; Keeping addresses anonymous
H04W 80/04
Wireless network protocols or protocol adaptations to wireless operation: network layer protocols, e.g. mobile IP [Internet Protocol]

Family

US 2004/0058683 A1Pre-grant publication · published 25 Mar 2004
US 7,466,674 B2This patent

From the US filing history. Foreign family members aren’t listed.

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