Communication handover method and communication message...

Details Communication handover method and communication message... Communication handover method and communication message...

2011-08-30

2011-08-30

Phillips, Hassan (Department: 2467)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C455S436000

Reexamination Certificate

active

08009629

ABSTRACT:
A technique is disclosed whereby a mobile communication apparatus (MN) having a plurality of interfaces (IFs) performs fast handovers (FMIP) and changes a packet transfer destination using its own multiple IFs, so that packet transmission/reception using an appropriate IF for the MN is enabled. According to this technique, an MN10transmits, to an access router (AR)21, an FBU message that includes, as an packet transfer destination used during a period in which the FMIP is performed for the handover from an access point (AP)22to an AP32, an address that is allocated to an IF currently connected to the AP12, and notifies the AR21to that effect. After the handover has been completed, the packet transfer destination is changed to the IF that is re-connected. Even when the handover for one IF is performed, the MN10can receive a packet using the IF having an address designated as a transfer destination, and further, when the handover has been completed, can perform communication using the IF designated before the FMIP was performed.

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