Method and apparatus for a simple calculation of CRC-10
US6014767A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1997 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Apr 1, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/091
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
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)=X.sup.10 +X.sup.9 +X.sup.5 +X.sup.4 +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, X.sup.9 +X.sup.4 +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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.