دانلود مقاله ISI انگلیسی شماره 27700
ترجمه فارسی عنوان مقاله

تجزیه و تحلیل عملکرد ترافیک دو درجه ای انتقال سوئیچ بافری ATM در طی کانال نامطمئن

عنوان انگلیسی
Performance Analysis of an ATM Buffered Switch Transmitting Two-Class Traffic over Unreliable Channels
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
27700 2003 11 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : AEU - International Journal of Electronics and Communications, Volume 57, Issue 3, 2003, Pages 190–200

ترجمه کلمات کلیدی
ارتباطات داده ها - تجزیه و تحلیل عملکرد - خروجی سوئیچ های بافر - کانال های غیر قابل اعتماد - صف اولویت گسسته -
کلمات کلیدی انگلیسی
Data Communications, Performance Analysis, Output Buffered Switches, Unreliable Channels, Discrete Priority Queues,
پیش نمایش مقاله
پیش نمایش مقاله  تجزیه و تحلیل عملکرد ترافیک دو درجه ای انتقال سوئیچ بافری ATM  در طی کانال نامطمئن

چکیده انگلیسی

In this article we analyze the performance of a space division output buffered switch operating in an ATM multimedia environment as follows. Fixed size packets arrive onto the switch inputs in each time slot. These packets are of two classes. Class-1 packets, representing real time communications, are sensitive to delay but insensitive to loss. Class-2 packets, representing nonreal time communications, are insensitive to delay but sensitive to loss. The switch transmits these two-class packets over communications channels which are unreliable. That is, the packets could be lost before reaching the other end. To respond to the class-1 delay sensitivity, the switch gives class-1 packets higher service priority over class-2 packets. And to respond to the class-2 loss sensitivity, the switch requires an acknowledgment for each class-2 packet it transmits. It is this latter response that is the major contribution of the article. In particular, it gives rise to two service times, rather than one as has usually been considered in the published literature. For the purpose of the analysis, the switch is modelled as a priority, discrete time, batch arrival, single server queueing system, with infinite buffer and two service times: one deterministic for class-1 and one geometric for class-2. Three performance measures are analyzed: occupancy, unfinished work, and waiting time.