Method of shaping a cell stream including both user cells and op

Details Method of shaping a cell stream including both user cells and op Method of shaping a cell stream including both user cells and op

1995-02-22

1998-07-21

Elmore, Reba I.

Boots, shoes, and leggings

370232, 370412, G06F 102

Patent

active

057843031

ABSTRACT:
A shaping method is proposed in which cells (U1-U7, 01-06) of a cell stream (CS1) are mutually delayed to obtain a shaped cell stream (CS2). For this method, a shaping delay is used which depends upon the type of the cells which are so delayed in order for consecutive user cells (U1-U2, U2-U3, . . . ) to be mutually delayed over the inverse (TU) of the peak cell rate negotiated for these user cells (U1-U7). The above method is obtained by making this shaping delay equal to the above inverse when adjacent cells are user cells (U1-U2), to a fraction (TU/3) of this inverse when the second one of these adjacent cells is an operation and maintenance or OAM cell (01-07), and to the difference between the above inverse and the number of consecutive OAM cells inbetween two user cells (U5-U6) times the above fraction, if the first one of said adjacent cells is an OAM cell (03) whilst the second one is a user cell (U6).

REFERENCES:
patent: 5271005 (1993-12-01), Takase et al.
patent: 5541926 (1996-07-01), Saito et al.
Computer Communications, vol. 16, No. 12, Dec. 1993, Jordan Hill, Oxford, pp. 794-797, L.F. Merakos, "Priority shaping of source traffic in ATM B-ISDN".
Infocom 1993, vol. 1, 28 Mar. 1993, San Francisco, pp. 168-175, L.K. Reiss, L.F. Merakos, "Shaping of virtual path traffic for ATM B-ISDN".
Study Item 19 on the ITU-TS Living List, "Aggregate of saparate shaping of user cells and (operation and maintenance or) OAM cells".
France Telecom contribution TD 5.1 to ETSII/NA5 of May 10-14, 1993 entitled "Enforcement of OAM cell flows".
"The Spacer-Controller: an efficient UPC/NPC for ATM networks", by P. Boyer et al., ISS 1992, Oct. 1992, vol. 2, paper A9.3, pp. 316-320.

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