| 摘要 |
PURPOSE: A cell spacer is provided to remove a queue for searching a cell slot, which is not occupied, and secure a transmission order of cells by using a bucket calendar, having special queues every cell time. CONSTITUTION: A cell spacer of an ATM(Asynchronous Transfer Mode) matching device using a bucket calendar comprises: a bucket calendar having a bucket such as a FIFO(First In First Out) storing a buffer address of an output cell every cell slot; a cell spacer including an emission FIFO. The bucket comprises a cell counter for showing up the number of cells, registered in the cell slots, and seven cell pointers for registering cell buffer address, in which cells are stored. An ATM cell, CDV(cell delay variance), cell arriving time t are inputted in the cell spacer, and when the cell is inputted in temporary time, the inputted cell is stored in the cell buffer. The stored cell buffer address is registered in a bucket of a slot, located in the backside as the CDV than the current time, and when it is the time to output, the registered cell buffer address in the slot is read, and the inputted cell by the method of outputting cells is delayed to be performed as spacing.
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