标题: 非同步传输模式交换系统中多点传播之研究与效能分析
An Investigation and Performance Analysis of Multicasting in ATM Switching Systems
作者: 曾一修
Tseng, I-Shiou
陈耀宗
Yaw-Chung Chen
资讯科学与工程研究所
关键字: 多点传播交换架构;复制网路;multicast switch architecture;copy network
公开日期: 1995
摘要: 在宽频整合服务数位网路(B-ISDN)中,ATM已被视为混和资料传输的未来
趋势。对于多媒体资料而言,ATM交换系统必须提供多点和点对点的传播
。 复制网路(copy network)是一种传统的
多点传播交换架构。在轻微至中等的讯务负荷下,它能够让多点传播的封
包(cell)维持在低的延迟时间。然而在较重的负荷下,这些封包的延迟时
间会变的很大。因此,我们提出一种较有效率的多点传播交换架构来克服
上述的问题。这个所提出的架构包含一个复制网路和一个多点传播的伫列
。这个伫列是用来处理需要较多复制的多点传播的封包。 为了比较各种
多点传播交换架构的效能,我们建构了一个独一的讯务之模型(model)。
我们研究各种的多点传播架构并且比较它们的效能。然后,以这些架构为
基础来定义我们所提的架构。藉着使用相同的讯务模型,我们模拟出各种
不同的多点传播交换架构和我们所提出的架构。之后,以这些模拟结果的
分析为基础,我们提出一个设计的改进方法。
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
显示于类别:Thesis