BUFFER ALLOCATION DEVICE, SUBSCRIBER LINE TERMINAL DEVICE, BUFFER ALLOCATION METHOD AND PROGRAM

To mount a device for buffering transmission data at a lower cost.SOLUTION: A buffer allocation device includes an acquisition unit for acquiring request buffer amounts for a plurality of queues, and a setting unit for converting each of the request buffer amounts into a first lowest conversion buffer amount based on a lowest data accommodation efficiency which may occur in a first storage unit, allocating a buffer amount calculated based on the first lowest conversion buffer amount and a lowest required buffer amount per cycle of dynamic bandwidth allocation to a queue having the lowest priority, allocating the first lowest conversion buffer amount to queues other than the lowest priority queue, determining for each queue whether oversubscription may occur, based on the total capacity of the first storage unit and the first lowest conversion buffer size, and allocating a predetermined buffer amount to queues in a second storage unit with respect to the queues which are determined to cause oversubscription.SELECTED DRAWING: Figure 2 【課題】送信データをバッファリングする機器をより低いコストで実装すること。【解決手段】バッファ割り当て装置は、複数のキューに対する要求バッファ量を取得する取得部と、要求バッファ量を第１の記憶部で生じうる最も低いデータ収容効率に基づいて第１最低換算バッファ量にそれぞれ換算し、最も優先度の低いキューに対して、第１最低換算バッファ量と動的帯域割当の１周期当たりに最低限必要なバッファ量とに基づいて算出されるバッファ量を割り当て、最も優先度の低いキュー以外のキューに対して第１最低換算バッファ量を割り当て、第１の記憶部の合計容量と前記第１最低換算バッファ量とに基づいて、オーバーサブスクリプションが発生しうるか否かをキューごとに判定し、オーバーサブスクリプションが発生すると判定されたキューについて第２の記憶部のキューに所定のバッファ量を割り当てる設定部とを備える。【選択図】図２