Apparatus and method for identifying boundary of asynchronous tr

Details Apparatus and method for identifying boundary of asynchronous tr Apparatus and method for identifying boundary of asynchronous tr

1997-09-23

2000-11-21

Vu, Huy D.

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370389, H04L 1266

Patent

active

061513202

ABSTRACT:
An ATM cell boundary identification apparatus and method. The apparatus comprises an idle cell inserting unit for inserting an idle cell into a cell transmitted from an ATM layer to be matched therewith in its speed; a header error cell generating unit for generating a header error cell by means of header information of the cell transmitted from the idle cell inserting unit; a cell scrambling unit for scrambling payload of the cell received from the header error cell generating unit; a transmission framer for converting the cell obtained in the cell scrambling unit to be suitable to a frame E1; a line interfacing unit for transmitting a transmission frame obtained in the transmission framer to a transmission line after converting it into a bipolar transmission signal, and for transmitting the cell received from the transmission line to a reception framer; a reception framer for identifying a boundary of the cell according to each time slot of the cell transmitted from the line interfacing unit to thereby extract a header error cell; and a header error cell detecting unit for detecting the header error cell extracted from the reception framer, and checking whether the extracted cell is effective or not.

REFERENCES:
patent: 5710756 (1998-01-01), Pasternak et al.
patent: 5742765 (1998-04-01), Wong et al.
patent: 6021163 (2000-02-01), Hoshi

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