ATM switch

Details ATM switch ATM switch

1995-12-06

1998-03-17

Safourek, Benedict V.

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

370395, H04L 1256

Patent

active

057295301

ABSTRACT:
An ATM switch capable of preventing the network resource from being wasted during the occurrence of an overcrowding condition. In the ATM switch, both a message type and a processing mode are stored in correspondence to the connections. When the discarding of a cell occurs, the connection to which the discarded cell belongs is set to a discard mode by a cell discard controlling circuit, and each cell constituting the same message as that of the discarded cell out of the subsequent cells is discarded, and when a demarkation of the message has been detected, the processing mode is returned to a transfer mode, whereby the subsequent received cells are transferred in a normal manner. Thus, the cell which has become useless for a reception terminal is discarded in the network.

REFERENCES:
patent: 5426640 (1995-06-01), Hluchyj
patent: 5528763 (1996-06-01), Serpanos
patent: 5557610 (1996-09-01), Calamvokis et al.
Armitage et al., "Packet Reassembly During Cell Loss," IEEE Network, pp. 26-34, Sep. 1993.
Kamal, "A Performance Study of Selective Cell Discarding Using the End-of-packe Indicator in AAL Type 5," INFOCOM 95, vol. 3. pp. 1264-1272, 1995.
Kawahara et al., "Performance Evaluation of Selective Call Discard Schemes in ATM Networks," INFOCOM 96, vol. 3, pp. 1054-1060, 1996.
Inai, "Block of Cells Discarding for Congestion Control in ATM Networks," Singapore ICCS 94, pp. 540-544, 1994.

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