US 8,134,973 B2Granted

Mobile terminal apparatus and hand-off method thereof

AssigneePanasonic Corporation

InventorsChan Wah Ng, Pek Yew Tan

Life of this patent

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Abstract

A mobile terminal that ensures smooth, continuous communications sessions even when in transit, regardless of base station capabilities and functionalities, in a packet-switched data communications network. With this terminal, each of a plurality of lower interfaces 101-1 to 101-M, when its associated access mechanism is in an active state, can obtain a connection to packet-switched data communications network 150 using its home-address HoA.1 or its care-of-address CoA.BS1. When lower interface 101-a loses its connection obtained using the care-of-address CoA.BS1, multiple access decision unit 104 instructs mobility support unit 102 to set up a binding of the home-address HoA.1 and either one of the home-address HoA.2 and the care-of-address CoA.BS2 of another lower interface 101-b. Mobility support unit 102 sets up the binding according to the instruction from multiple access decision unit 104.

Claims2

Dependent claims

A mobile terminal apparatus comprising:

a plurality of interfaces, each interface being configured to, when an associated access mechanism thereof is in an active state, obtain a connection to a network using one of a home-address and a care-of-address, said home-address being assigned to said interface in advance, said care-of-address being assigned to said interface while said interface is in a domain where the home-address is not available;
an instructing section that instructs a setup of a binding of a home-address of a first interface of said plurality of interfaces and one of a home-address and a care-of-address of a second interface of said plurality of interfaces when said first interface loses a connection obtained through a care-of-address of said first interface, and stores information on a state in which the home address of the first interface is set to be bound to one of the home-address and the care-of-address of the second interface after instructing the setup of said binding;
and
a setup section that sets up the binding, wherein:
when the second interface loses a connection to the network after the setup of said binding is instructed, said instructing section determines an occurrence of the connection loss of the first interface based on the stored information on the state.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/345,371Filed 29 Dec 2008 · division
Priority: JP 2003-17129516 Jun 2003
Published: US 2009/0116451 A17 May 2009
Granted: 13 Mar 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04W 60/005
Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration: multiple registrations, e.g. multihoming
H04L 12/5692
Access to open networks; Ingress point selection, e.g. ISP selection: selection among different networks
H04W 36/0016
For data sessions of end-to-end connection: hand-off preparation specially adapted for end-to-end data sessions
H04W 36/0027
For data sessions of end-to-end connection: for a plurality of data sessions of end-to-end connections, e.g. multi-call or multi-bearer end-to-end…

Family

Application10/561,194Parent of this division · filed 16 Dec 2005
US 2009/0116451 A1Pre-grant publication · published 7 May 2009
US 7,843,880 B2Parent of this division
US 2006/0146748 A1Published application
US 8,134,973 B2This patent

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