Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Patent
1998-02-10
2000-07-25
Jung, Min
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
370397, 370409, 370410, H04L 1256
Patent
active
060944242
ABSTRACT:
A virtual circuit rerouting method and apparatus provide for rerouting virtual circuits in an ATM-based network having mobile devices. Included are protocols for ensuring hand-off of the mobile device from a first basestation to a second basestation, identification of a rebuild switch and connection of the mobile device to the rebuild switch prior to data being transferred from the mobile device to the network. The rerouting method minimizes loss of data by ensuring that the mobile device is incapable of transferring data to the network before the virtual circuit rerouting procedure is completed. The method includes an aggregate registration request, or 3-phase handshake, and a "Connect Confirm" command. The virtual circuit rerouting protocols are further adapted to operate on most common virtual circuit rerouting strategies, including rebuild, partial rebuild and extension with loop removal.
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Kalmanek Charles Robert
Mishra Partho Pratim
Srivastava Mani B.
AT&T Corp.
Jung Min
LandOfFree
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