標題: 非同步傳輸模式交換系統中多點傳播之研究與效能分析
An Investigation and Performance Analysis of Multicasting in ATM Switching Systems
作者: 曾一修
Tseng, I-Shiou
陳耀宗
Yaw-Chung Chen
資訊科學與工程研究所
關鍵字: 多點傳播交換架構;複製網路;multicast switch architecture;copy network
公開日期: 1995
摘要: 在寬頻整合服務數位網路(B-ISDN)中,ATM已被視為混和資料傳輸的未來
趨勢。對於多媒體資料而言,ATM交換系統必須提供多點和點對點的傳播
。 複製網路(copy network)是一種傳統的
多點傳播交換架構。在輕微至中等的訊務負荷下,它能夠讓多點傳播的封
包(cell)維持在低的延遲時間。然而在較重的負荷下,這些封包的延遲時
間會變的很大。因此,我們提出一種較有效率的多點傳播交換架構來克服
上述的問題。這個所提出的架構包含一個複製網路和一個多點傳播的佇列
。這個佇列是用來處理需要較多複製的多點傳播的封包。 為了比較各種
多點傳播交換架構的效能,我們建構了一個獨一的訊務之模型(model)。
我們研究各種的多點傳播架構並且比較它們的效能。然後,以這些架構為
基礎來定義我們所提的架構。藉著使用相同的訊務模型,我們模擬出各種
不同的多點傳播交換架構和我們所提出的架構。之後,以這些模擬結果的
分析為基礎,我們提出一個設計的改進方法。
Asynchronous Transfer Mode (ATM) has been considered as the
future trend for the information transfer of mixed traffic
carried in the Broadband Integrated Service Digital Network
(BISDN). Regarding the multimedia traffic, its point-to-
multipoint transfer must be supported by ATM switches as with
point-to-point transfer.
Copy network is a traditional multicast switch architecture that
maintains low multicast cell delay under low to medium load,
while under high load the multicast cell delay in the copy
network will grow drastically. Here we propose an efficient
multicast switch architecture to overcome the above deficiency.
The proposed architecture consists of a copy network and an
additional multicast queue which processes those multicast cells
with large number of copies. In
order to compare theperformance of various multicast switch
architectures, we construct a unique traffic model. Various
multicast switches are investigated and their corresponding
performance are compared. Based on these architectures, our
proposed architecture is constructed. By using the same traffic
model, we perform the simulation to evaluate the performance of
different multicast architectures, including ours, and design
criteria are suggested based on the analysis of the results.
URI: http://140.113.39.130/cdrfb3/record/nctu/#NT840392079
http://hdl.handle.net/11536/60427
Appears in Collections:Thesis