The efficient use of the residual bandwidth in the segmentation and recombination (SAR) sublayer of the AAL layer

摘要

In the present invention, when an empty entry is reached during the circulation of the scheduling table of the partitioning and reassembling (SAR) sublayer, the idle cell of this entry is not sent down to the physical layer, (SAR) sub-layer of the AAL hierarchical layer so that the remaining bandwidth can be efficiently used by sending down the AAL sub-layer, A first step (S1) of incrementing 1 for a predetermined entry pointer set in the table; A second step S2 of determining whether the current entry specified by the entry pointer of the first step S1 is empty or not and moving to the first step S1 if the entry is empty; A third step S3 of determining whether there is a cell to be sent in the entry if the current entry is not empty as a result of the determination in the second step S2; A fourth step (S4) of outputting a corresponding cell if there is a cell to be transmitted as a result of the determination in the third step (S3); And a fifth step S5 of outputting an empty cell if there is no cell to be transmitted as a result of the determination in the third step S3.