Method and apparatus for a simple calculation of CRC-10

Method and apparatus for a simple calculation of CRC-10

A process and an apparatus to calculate the FCS (Frame Check Sequence) error checking code of packets payload sent over a fixed size packet networks in a network equipment sending said packets and to check said FCS in the network equipment receiving said packet; this invention applies to calculation...

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Hauptverfasser: GLAISE, RENE
Format: Patent
Sprache:eng
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BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
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RENE
description A process and an apparatus to calculate the FCS (Frame Check Sequence) error checking code of packets payload sent over a fixed size packet networks in a network equipment sending said packets and to check said FCS in the network equipment receiving said packet; this invention applies to calculations of FCS based on CRC (Cyclic Redundancy Checking) codes generated by the polynomial generator of degree 10, G(X)=X10+X9+X5+X4+X+1. Particularly, this invention is for use in the ATM layer of ATM nodes processing OA&M and AAL3/4 ATM cells. The solution consists in using the calculation of the FCS based on the CRC code generated by the polynomial generator of degree 9, X9+X4+1 and simple operations. The calculation and the checking of the FCS is simple and thus the performance are improved authorizing the support of higher speed network lines.
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Particularly, this invention is for use in the ATM layer of ATM nodes processing OA&amp;M and AAL3/4 ATM cells. The solution consists in using the calculation of the FCS based on the CRC code generated by the polynomial generator of degree 9, X9+X4+1 and simple operations. 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subjects BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
title Method and apparatus for a simple calculation of CRC-10
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