APPARATUS AND METHOD FOR CONTROLLING BUFFER USING HOL-LJ METHOD

摘要

The present invention relates to an efficient buffer control apparatus and a control method using the HOL-LJ method in an ATM network. When an input cell is input to a cell rank classifier, the cell rank classifier checks the CLP (Cell Loss Priority) bit in the cell header. If the rank cell (CLP value is 0), no control is performed and the output FIFO outputs the cells in the input order. If the rank cell (CLP value is 1), the cell is sent to the low-order input cell buffer. . The cell stored in the low-order input cell buffer compares the value set by the user with the value of the low-rank cell counter, sends the cell to the output FIFO if the value is the same, and keeps it in the buffer if the value is small. In this case, the output of the cell enables high-speed processing with a simple hardware configuration by controlling the high-priority cell to be output first and the low-priority cell, and by performing efficient time priority control, the service quality is consistent with the quality required by various services. To ensure.