Method of processing a digital signal for transmission, a method of processing an optical data unit upon reception, and a network element for a telecommunications network
AssigneeAlcatel Lucent
InventorsPedro Cameirao, Jean-Francois Jamond, Alberto Lometti, Laurent Keuer
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Abstract
A method of processing a digital signal for transmission is provided comprising digital data frames, by compressing the digital data frames; and generating an optical data unit for transmission comprising multiple of the compressed digital data frames. The optical data unit is configured for transport by an Optical Transport Network, OTN.
Claims13
A method of processing a digital signal, including at least digital radio data frames, for transmission, the method comprising:
- compressing digital data frames, wherein the compressing comprises reducing redundancies in the digital data frames, scaling a block of samples output from the reducing by a scaling factor and quantising the scaled samples to produce scaled, compressed samples;
- and
- generating, via at least one processor, an optical data unit for transmission comprising multiple of the compressed digital data frames, said multiple of the compressed digital data frames being from multiple links and the optical data unit being configured for transport by an Optical Transport Network, OTN, wherein the compressed digital data frames are concatenated into a plurality of composite frames, and the composite frames are encapsulated to form a respective optical data unit and wherein the generation is by concatenating multiple of the compressed digital data frames into a composite frame and encapsulating the composite frame to form the optical data unit.
A method of processing an optical data unit upon reception from an Optical Transport Network, OTN, by
- splitting the optical data unit into multiple compressed digital data frames, wherein the splitting is by de-encapsulating the optical data unit to provide a composite data frame, and deconcatenating the composite data frame to provide the multiple compressed digital data frames;
- and
- decompressing the compressed digital data frames to provide decompressed digital radio data frames from multiple links, wherein the decompressing comprises dequantising received samples, descaling a block of the dequantised samples, and inserting redundancies into the descaled samples to produce the digital radio data frames.
A network element for a telecommunications network, the element comprising:
- a compressor configured to compress digital radio data frames from multiple links wherein compressing comprises reducing redundancies in the digital data frames, scaling a block of samples output from the reducing by a scaling factor and quantisinq the scaled samples to produce scaled, compressed samples;
- a generator configured to generate a first optical data unit for transmission comprising multiple of the compressed digital data frames, the first optical data unit being configured for transport by an Optical Transport Network, OTN, wherein generation is by concatenating multiple of the compressed digital data frames into a composite frame and encapsulating the composite frames as a first optical data unit;
- a processor configured to split a second optical data unit upon reception from an Optical Transport Network, OTN, into multiple compressed digital data frames;
- and
- a decompressor configured to decompress the compressed digital data frames from the second optical data unit so as to provide digital radio data frames from multiple links, wherein decompressing comprises dequantising received samples, descaling a block of the dequantised samples, and inserting redundancies into the descaled samples to produce the digital radio data frames.
Dependencies are inferred from the claim text.