بهبود الگوریتم رقابت استعماری برای حل مسئله جایگذاری نودها در شبکه¬های حسگر بی¬سیم گرید سه¬بعدی
الموضوعات :سید وفا بارخدا 1 , همت شیخی 2 , سودابه محمدی 3
1 - دانشگاه صنعتی کرمانشاه
2 - هیئت علمی
3 - عضو هیات علمی
الکلمات المفتاحية: شبکه حسگر بی¬سیم, شبکه گرید سه¬بعدی, الگوریتم رقابت استعماری, مهاجرت, جایگذاری نود.,
ملخص المقالة :
یکی از زمینه های تحقیقاتی اساسی و مهم در شبکه های حسگر بی سیم نحوه جایگذاری نودهای حسگر است به گونه ای که با کمترین تعداد نود تمامی نقاط هدف پوشش داده شوند و اتصال میان تمام نودها و نود چاهک برقرار باشد. در این مقاله از یک روش جدید که بر اساس الگوریتم رقابت استعماری است برای حل مسئله ذکر شده استفاده شده است. در روش پیشنهاد شده امکان مهاجرت مستعمره ها از امپراطوری های ضعیف به امپراطوری های قوی تر به الگوریتم رقابت استعماری اضافه شده است. ایده مهاجرت از جوامع انسانی الهام گرفته شده است که انسان-ها در برخی شرایط تصمیم به مهاجرت از یک کشور به کشور دیگر می کنند. شبکه حسگر بی سیم به صورت سه بعدی و گرید در نظر گرفته شده است و نودهای حسگر فقط می توانند در نقاط تقاطع گرید قرار بگیرند. این در حالیست که نقاط هدف ممکن است در هر مکانی از فضای سه بعدی پراکنده باشند. نتایج شبیه سازی نشان می دهد که الگوریتم پیشنهادی نسبت به الگوریتم های مشابه از تعداد نود حسگر کمتری برای حل مسئله استفاده می کند و همچنین دارای زمان اجرای بسیار کمتری است.
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