Communication system, mobile terminal and access router

Details Communication system, mobile terminal and access router Communication system, mobile terminal and access router

2005-01-07

2011-11-22

Eng, George (Department: 2617)

Multiplex communications

Communication over free space

Combining or distributing information via time channels

C370S352000

Reexamination Certificate

active

08064427

ABSTRACT:
A new technique is disclosed, by which a mobile terminal after executing handover between subnets can quickly perform packet transmission to outside immediately after the handover. According to this technique, after deciding the execution of handover, MN (mobile terminal)10requests an external transmission address (link local address of an access router belonging to a subnet or of a default router after the handover) relating to a subnet connected after the handover at the same time as the transmitting of RtSolPr message to PAR21connected before the handover. PAR acquires the external transmission address in response to the request and transmits the external transmission address to MN together with a response by PrRtAdv message to MN. MN sets up the external transmission address as acquired before the handover to the packet to be transmitted after the handover.

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Rajeev Koodli “Fast Handovers for Mobile IPv6”, draft-ietf-mobileip-fast-mipv6-08, Oct. 2003.
T. Narten, E. Nordmark and W. Simpson “Neighbor Discovery for IP Version 6 (IPv6)”, RFC2461, Dec. 1998.
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