Method and system for interleaving and deinterleaving SDH frames
US5675585A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1995 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | Jul 26, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/0089
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a method of interleaving and deinterleaving STM-1 and STM-N SDH frame pointers transmitted between a transmitter and a receiver, each frame comprising a section overhead area, a pointer area and a payload area including the data to be transmitted. At the transmitter, the bits of the pointer area and those of the payload area are interleaved according to an interleaving law retaining the position modulo 24 in the interleaved bits. The interleaving produces an interleaved frame transmitted to the receiver at which it is deinterleaved using a law that is the reciprocal of the interleaving law. This interleaves all the bits of pointers in the frame without changing the values of the B1 and B2 parity control bytes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.