Technique for improving asynchronous transfer mode operation over a communications link with bursty bit errors
US5600653A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1994 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | Sep 30, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5673
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In an asynchronous transfer mode (ATM) system, interleaved cells are formed at the transmit end by combining into each interleaved cell certain bits from each of plural different original ATM cells, the interleaved cells are transmitted over the communications link, and then deinterleaved at the receive end. Any bursty errors occurring on the communications link will, after deinterleaving, be spread out over multiple original ATM cells, maximizing the error correction for ATM cells and error detection for AAL capability and minimizing loss of data. The C1 byte in the Physical Layer Convergence Protocol (PLCP), which indicates the location of end of the PLCP frame, is protected against the burst errors by replication of C1 byte through inserting them in the growth bytes Z1 through Z4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.