Insert/remove signalling in LAN systems

Details Insert/remove signalling in LAN systems Insert/remove signalling in LAN systems

1991-06-17

1993-05-25

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 857, 370 8515, H04J 316, H04J 312

Patent

active

052146499

ABSTRACT:
In a communication system comprising several nodes and a scheduler interconnected by a serial transmission medium, signalling information is transmitted by inserting it whenever required in the data stream in the form of basic data units (ADU). The scheduler inserts a request start and an end flag, and any node requiring allocation of a given type of service insert its request unit between the flags. Thus, the scheduler receives accumulated node-individual request information. The scheduler then sends a response comprising individual response units between two delimiting flags. Each node having made a request removes the respective individual response unit so that only the flags return to the scheduler. Special pipelined circuitry allows insertion and removel of the basic data units constituting the signalling information at very high speed without impeding the speed and timing of the passing data stream.

REFERENCES:
patent: 4416008 (1983-11-01), Takahashi et al.
patent: 4637014 (1987-01-01), Bell et al.
patent: 4694453 (1987-09-01), Kobayashi et al.
patent: 4726017 (1988-02-01), Krum et al.

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