Multiplex communications – Wide area network – Packet switching
Patent
1993-12-16
1996-06-25
Lee, Thomas C.
Multiplex communications
Wide area network
Packet switching
39520012, 370 951, 379 59, 3642222, 3642843, 3642844, 364DIG1, G06F 1300
Patent
active
055309631
ABSTRACT:
A method and system for maintaining a routing path between a selected workstation within a multisegment local area network and a mobile workstation wherein individual segments within the multisegment local area network are interconnected by a router device and wherein selected segments within the multisegment local area network include radio frequency transceivers adapted to provide a wireless communications link with mobile workstations. Each time communication is established between a mobile workstation and a selected workstation within the multisegment local area network via a radio frequency transceiver a routing table entry is established which identifies a segment location for the mobile workstation within a routing table associated with each router device within the multisegment local area network. A routing table entry is also established which identifies a segment location for the selected workstation within the routing table associated within each router device within the multisegment local area network in response to each attempt at establishment of communication between the selected workstation and the mobile workstation. Thereafter, all routing table entries which identify the segment location for a mobile workstation are automatically deleted in response to a termination of communications between the mobile workstation and the radio frequency transceiver. Routing path determination for communications between a mobile workstation and any workstation within the multisegment local area network may then be determined by reference to a routing table associated with each router device within a multisegment local area network without requiring the maintenance of routing path information at each workstation within the multisegment local area network.
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Moore Victor S.
Van Duren Richard G.
Wu David C.
Dillon Andrew J.
International Business Machines - Corporation
Lee Thomas C.
Meky Moustafa Mohamed
Tomlin Richard A.
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