MOBILE IP PACKET COMMUNICATION SYSTEM - MITSUBISHI ELECTRIC CORP

Title:

MOBILE IP PACKET COMMUNICATION SYSTEM

Document Type and Number:

WIPO Patent Application WO/2002/071775

Kind Code:

A1

Abstract:

A mobile IP packet communication system includes a mobile terminal (8), a wireless base station (6), a base station control device (5), a subscriber packet switching device (3), and a gateway packet switching device (1). The subscriber packet switching device, which receives a packet from a mobile terminal as a source, encapsulates it with a multicast address without acquiring the information on the routing area (13), visited by the mobile terminal as a destination, from the home location register (2). The subscriber packet switching device then routes the packet directly to a subscriber packet switching device visited by the mobile terminal as a destination. In this manner, transmission delay can decrease in data packet transfers between mobile terminals.

Inventors:

OKUBO AKIRA (JP)
MATSUYAMA HIROSHI (JP)

Application Number:

PCT/JP2001/001587

Publication Date:

September 12, 2002

Filing Date:

March 01, 2001

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)
OKUBO AKIRA (JP)
MATSUYAMA HIROSHI (JP)

International Classes:

H04L12/715; H04L29/06; H04W28/00; H04L12/70; H04W40/02; H04W40/34; H04W40/36; H04W76/02; H04W76/04; H04W80/04; H04W88/14; H04W92/02; H04W92/24; H04L12/18; (IPC1-7): H04Q7/22; H04L12/56; H04L12/66

Domestic Patent References:

WO1996021328A1

1996-07-11

Foreign References:

JPH06188831A	1994-07-08
JPH11355281A	1999-12-24

Other References: