بهبود توازن بار پویا و زمان پاسخ در شبکههای نرمافزارمحور با بهرهگیری از الگوریتمهای برنامهریزی آرمانی چند منظورهی فازی
الموضوعات :محمدرضا فرقانی 1 , محمدرضا سلطان آقایی کوپائی 2 , فرساد زمانی بروجنی 3
1 - دانشگاه آزاد اسلامی واحد اصفهان (خوراسگان)
2 - دانشگاه آزاد اسلامی واحد اصفهان(خوراسگان)
3 - دانشگاه آزاد اسلامی واحد اصفهان ( خوراسگان)
الکلمات المفتاحية: شبکه نرم¬افزار محور, توازن بار پویا, بهینه¬سازی چند منظوره, الگوریتم رأی¬گیری فازی,
ملخص المقالة :
شبکههای نرمافزارمحور به عنوان یک رویکرد کارآمد در حوزه فناوری ارتباطات شناخته شدهاند که هدف آن¬ها بهبود عملکرد و بهرهوری شبکههای کامپیوتری است و در نتیجه کاهش هزینهها را به همراه دارند. یکی از چالشهای اساسی در شبکههای نرمافزارمحور، توازن بار بین گرهها است. حل این چالش باعث بهبود زمان پاسخ و عملکرد شبکه میشود. امروزه روشهای متعددی برای توازن بار در شبکههای نرمافزارمحور ارائه شده است، اما هنوز به وضعیت ایدهآل نرسیدهاند. در این مقاله، یک روش جدید برای بهبود توازن بار و کاهش زمان پاسخ ارائه میشود. این روش از الگوریتمهای برنامهریزی آرمانی چند منظوره و وزندهی فازی بهره میبرد. در روش پیشنهادی، فاکتورهایی مانند پهنای باند، وضعیت ترافیک، لینک بافر و مسیریاب مد نظر قرار میگیرند و بهترین مسیر و مسیریاب با توازن بار مطلوب برای جریانهای اطلاعات با کمترین زمان انتخاب میشوند. یکی از مزایای بارز این روش، امکان انجام توازن بار به صورت خودکار و بدون نیاز به مداخله انسان است. نتایج تجربی نشان میدهد که روش پیشنهادی نسبت به روشهای دیگر، بهبود قابل توجهی در زمان پاسخ حدود 14.8 درصد را نشان می¬دهد و همچنین توازن بار شبکههای نرمافزارمحور را حفظ میکند. با استفاده از روش پیشنهادی، علاوه بر بهبود کیفیت سرویس و رضایت کاربران، زمان پاسخ نیز بهبود خواهد یافت. به طور خلاصه، روش پیشنهادی به عنوان یک رویکرد قابل استفاده در شبکههای نرمافزارمحور مطرح است و نسبت به روشهای موجود برتری دارد.
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