1. A method for a telecommunication system, said telecommunication system comprising a plurality of entities implementing a phase of communicating data conveyed by a plurality of transport channels, said data of said transport channels being multiplexed into at least one multiplexing frame, said data being rate-matched by transforming an input data block of an initial size into an output data block of a final size, said method comprising: calculating, by one of said plurality of entities, said final size of said output data block, according to said initial size of said input data block, a first parameter, a second parameter and a maximum payload of said at least one multiplexing frame, said first parameter being an integer relating to a rate matching ratio of said final size to said initial size, said second parameter being a non-dimensional number corresponding to a maximum percentage of bits to be punctured and being predefined before said calculating; executing, by said one of said plurality of entities, a transformation of said input data block of said initial size into said output data block of said final size; and transmitting, by said one of said plurality of entities, data transformed in the transforming via a physical channel to another of said plurality of entities, referred to as a second entity.