| 摘要 |
<p>A cell interval determination apparatus for usage parameter control, includes a counter, a memory, a cell arrival interval check unit, and a control unit. The counter is incremented every time a cell has arrived in an asynchronous mode to represent a cell arrival time. The memory stores, in units of cell type information, cell information consisting of cell type information included in the cell, the cell arrival time counted by the counter, a cell arrival interval defined value which is set in units of cell type information, and flag information representing a retrieval target/non-retrieval target. The cell arrival interval check unit calculates a time difference between the cell arrival time stored in the memory and the cell arrival time represented by the counter and determines a cell which violates the cell arrival interval defined value stored in the memory. The control unit retrieves, from the memory in accordance with the flag information, cell information having the same cell type information as that extracted from the arriving cell, designates to start the cell arrival interval check unit in accordance with a retrieval result, and stores the cell information associated with the arriving cell in the memory in accordance with the retrieval result and a determination result of the cell arrival interval check unit. <IMAGE></p> |
