Bit rate reservation at switching nodes of an asynchronous netwo

Details Bit rate reservation at switching nodes of an asynchronous netwo Bit rate reservation at switching nodes of an asynchronous netwo

1995-07-21

1997-02-04

Olms, Douglas W.

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370468, 370391, H04L 1256

Patent

active

056006454

ABSTRACT:
Bit rate reservation is effected with the aid of a reservation cell containing a requested bit rate transmitted from a calling terminal to a called terminal via switching nodes of an asynchronous network. At each node, a bit rate increase request is at least partially satisfied even if the difference between the requested bit rate and the current bit rate is greater than the bit rate available at the node. The node replaces the requested bit rate in the reservation cell by a new bit rate lower than the latter so that the called terminal receives the lower new adopted bit rate by the nodes. An acknowledgement cell retransmitted with this lower new bit rate by the called terminal renders uniform the adopted bit rate at all the nodes. If no acknowledgement cell has been received after a predetermined time-delay the nodes revert to their initial state, with the current bit rate preceding the bit rate reservation.

REFERENCES:
patent: 5081620 (1992-01-01), Girard et al.
patent: 5200952 (1993-04-01), Bernstein et al.
patent: 5390184 (1995-02-01), Morris
"A Reservation Principle with Applications to the ATM Traffic Control", Pierre Boyer et al., Computer Networks and ISDN Systems, vol. 24, No. 4, May 1992, pp. 321-334.

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