Station-to-station full duplex communication in a communications

Details Station-to-station full duplex communication in a communications Station-to-station full duplex communication in a communications

1989-10-11

1992-06-09

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

H04L 514

Patent

active

051213826

ABSTRACT:
The present invention provides a method and apparatus for establishing point-to-point full duplex communication between two stations served by a local area network (LAN) or connected by a communication link. One station initially transmits a request message through the link. The request message indicates that a first station is available for full duplex communication and also serves as a test to determine whether any non-full duplex devices are present along the point-to-point link between the first station and a second station. A second station receives the request message and responds by transmitting a reply message which indicates its availability for full duplex communication. Subsequently, full duplex communication may commence. The two stations periodically exchange additional messages to continuously verify that full duplex communication is operating properly.

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Tobagi, F., "Multiaccess Protocols in Packet Communications Systems", IEEE Transactions on Communications, vol. Com. 28, No. 4, Apr. 1980, pp. 468-488.

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