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題 名 | A High-Performance Multicast Switching Network Based on the Cube Addressing Scheme=以立方位址法為基礎的高效能多點廣播交換網路 |
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作 者 | 黃武元; 許榮隆; 楊岱霖; | 書刊名 | Proceedings of the National Science Council : Part A, Physical Science and Engineering |
卷 期 | 25:6 2001.11[民90.11] |
頁 次 | 頁344-351 |
分類號 | 448.6 |
關鍵詞 | 立方位址法; 多點廣播交換網路; 非同步傳輸; ATM switch; Multicast connection; Cubes; Copy network; |
語 文 | 英文(English) |
中文摘要 | 非同步傳輸(ATM)已被採用為未來寬頻網路的基礎,為了提供寬頻網路的服務, 非同步傳輸網路必須能夠支援多點傳播( multicast )與單點連線。 本論文中,一個簡單 的多點廣播交換網路系統被提出,這個網路系統是採用複製網路( copy network )與立方 交換網路( Cube Switching Network )的組合, 立方位址( Cube Addressing )觀念被 介紹,並用來做為輸出位址編碼的方法,使用立方位址來編碼多點廣播的輸出位址,首先, 利用複製網路來拷貝立方位址的個數而不是輸出位址的個數, 第二, 一個不阻塞( non-blocking )立方交換網路被提出, 並且把剛剛拷貝的立方位址傳送到多點廣播的輸出 位址。立方位址編碼方法來表達一群的輸出位址,而此立方位址能夠在我們所提的架構中, 經過一次就達到複製及繞徑的功能。並且多點廣播在複製網路的複製個數減少,得到較低的 遺失機率。同時複製網路中幹道轉換( Trunk Number Translators )的記憶體需求也減少 。我們提出的不阻塞立方交換網路包含一個 Batcher-Banyan 網路和一個廣播 Banyan 交換 網路。採用立方位址的複製網路其效能被評估與比較,結果顯示,所提出的多點廣播網路系 統得到增強的效能,因此,我們所提的系統可以是非同步傳輸中多點廣播交換網路的一個不 錯選擇。 |
英文摘要 | The Asynchronous Transfer Mode (ATM) is widely expected to serve as the basis for future Broadband ISDN (BISDN). To support BISDN services, the ATM switch must be capable of providing both multicast connections and unicast connections. In this paper, a new multicast switch architecture based on the combination of a copy network and a cube switch is proposed. The concept of cubes is introduced and employed as the addressing scheme. Employing the cube concept, the output addresses of a multicast cell are first replicated into the number of cubes by means of a copy network, instead of the number of output addresses. Second, the replicated cubes are fed to the proposed nonblocking cube switch, which routes the cubes to the output addresses of the multicast connection. Thus, the number of copies in the copy network can be reduced in the multicast cell. Therefore, a small probability of cell loss in the copy network is obtained. Additionally, the memory requirement is reduced in the TNT (Trunk Number Translators) of the copy network. Cubes are fed to the routing switch as the number of cubes instead of the number of output addresses of a multicast connection is obtained by the copy network. Thus, we also propose a nonblocking multicast switch for cubes. The nonblocking switching network for cubes is composed of a Batcher-Banyan network and a broadcast Banyan switch. The performance of the copy network is evaluated based on use of the cube addressing scheme, and a comparison is made. The results show that the proposed multicast switch achieves improved performance. Thus, the proposed multicast switch is a good alternative for application to the ATM multicast switching system. |
本系統中英文摘要資訊取自各篇刊載內容。