Method and system for interleaving and deinterleaving SDH frames
First Claim
1. Method of interleaving and deinterleaving STM-1 and STM-N SDH frame pointers transmitted between a transmitter and a receiver, each frame comprising three areas:
- a section overhead area;
a pointer area;
a payload area including the data to be transmitted,in which method, at said transmitter, said interleaving consists in interleaving the bits of said pointer area and those of said payload area according to an interleaving law retaining the position modulo 24 in the interleaved bits, said interleaving producing an interleaved frame transmitted to said receiver at which said interleaved frame is deinterleaved using a law that is the reciprocal of said interleaving law.
1 Assignment
0 Petitions
Accused Products
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.
132 Citations
9 Claims
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1. Method of interleaving and deinterleaving STM-1 and STM-N SDH frame pointers transmitted between a transmitter and a receiver, each frame comprising three areas:
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a section overhead area; a pointer area; a payload area including the data to be transmitted, in which method, at said transmitter, said interleaving consists in interleaving the bits of said pointer area and those of said payload area according to an interleaving law retaining the position modulo 24 in the interleaved bits, said interleaving producing an interleaved frame transmitted to said receiver at which said interleaved frame is deinterleaved using a law that is the reciprocal of said interleaving law. - View Dependent Claims (2, 3)
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4. System for interleaving and deinterleaving STM-1 and STM-N SDH frame pointers transmitted between a transmitter and a receiver, each frame comprising three areas:
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a section overhead area; a pointer area; a payload area including the data to be transmitted, said transmitter including an interleaver module for interleaving the bits of said pointer area and those of said payload area according to an interleaving law retaining the position modulo 24 in the interleaved bits, said interleaving producing an interleaved frame transmitted to said receiver, and said receiver including a deinterleaver module for deinterleaving said interleaved frame using a law that is reciprocal of said interleaving law. - View Dependent Claims (5, 6)
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7. Transmitter for a system for interleaving and deinterleaving STM-1 and STM-N SDH frame pointers transmitted between a transmitter and a receiver, each frame comprising three areas:
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a section overhead area; a pointer area; a payload area including the data to be transmitted, said transmitter including an interleaver module for interleaving the bits of said pointer area and those of said payload area according to an interleaving law retaining the position modulo 24 in the interleaved bits, said interleaving producing an interleaved frame transmitted to said receiver, and said receiver including a deinterleaver module for deinterleaving said interleaved frame using a law that is reciprocal of said interleaving law. - View Dependent Claims (8, 9)
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Specification