Patent ID: 6058118
Filing Date: 2000-05-02
Classification: H04H,H04J,H04L

Abstract:
Method for the dynamic reconfiguration of the structure of the frames of a signal in a transmission system providing for the transmission of said signal in the form of successive frames, each comprising one and the same number of capacity units each constituted by one and the same number of data elements,each of said frames being furthermore structured in at least one sub-channel, each of said sub-channels corresponding to a distinct source signal and being formed by a number of capacity units that is an integer,the number, order and/or format of said sub-channels being liable to be modified under the control of a reallocation instruction defining a new frame structure,a time interleaving on N frames being selectively implemented for each of said sub-channels, by means of a memory array formed by N rows each corresponding to the contents of a frame, and wherein, in a normal state, the data elements are recorded as a function of an interleaving relationship and re-read row by row,characterized in that, in a transient state, for the N frames following a reallocation instruction:the procedure for the recording of said data elements as a function of said interleaving relationship is unchanged, in keeping with the new structure defined by said reallocation instruction; anda specific logic for the re-reading of said memory array is implemented comprising, at least for the capacity units assigned to a new sub-channel in said new frame structure, the steps of:reading the data elements recorded in said memory array before said reallocation instruction as a function of the organization defined by the previous structure; andreading the data elements recorded in said memory array after said reallocation instruction as a function of the organization defined by the new structure.