Mobile location management in ATM networks

Details Mobile location management in ATM networks Mobile location management in ATM networks

1997-06-26

2000-06-20

Chan, Jason

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

455456, H04L 1238

Patent

active

060785756

ABSTRACT:
The tracking of mobile terminals served by base stations supported by respective switches are formed into respective peer groups of switches in which the peer groups are then formed into a hierarchical logical network having a prescribed number of levels of scope S, and in which individual ones of the switches serve as a home switch for respective ones of said wireless terminals is enhanced. Specifically, responsive to receiving a registration message sent by one of the wireless terminals, the receiving switch notifies the home switch associated with the sending terminal. The home switch, in turn, notes the current location of that terminal and sends a similar message to the switch serving the zone in which the sending wireless terminal was last located. The latter switch, responsive to receipt of the message sets a pointer that points to (a) the current location of the sending wireless terminal if the switch is within the scope of the current location of the sending terminal or (b) the home switch if the switch is outside of the scope of the current location of the sending terminal.

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The ATM Forum Technical Committee, "ATM User-Network Interface (UNI) Signalling Specification v 4.0", af-sig-0061.000 Letter Ballot, Jun. 1996, AF 95-1434R13.
The ATM Forum Technical Committee, "Private Network-Network Interface v1.0 (PNNI 1.0)", af-pnni-oo55.000 Letter Ballot, Mar. 1996, Section 4, pp. 39-46.
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"Mobility and Connection Management in a Wireless ATM Lan" K. Y. Eng et al., IEEE Journal on Selected Areas in Communications, vol. 15, No. 1, Jan. 1997, pp. 50-68.
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