یک طرح چند دروازه‌ای جهت بهبود CORPL تحت بار ترافیکی در شبکه‌های هوشمند انرژی مبتنی بر رادیو شناختگر با معماری مش
محورهای موضوعی : مهندسی برق و کامپیوترسیدعلی هاشمیان 1 * , وحید طباطباوکیلی 2
1 - دانشگاه علم و صنعت ايران
2 - دانشگاه علم و صنعت ايران
کلید واژه: شبکه‌های هوشمندرادیوی شناختگرارسال مجدد فرصت‌طلبانهتحلیل تأخیرمسیریابیشبکه‌های مشچنددروازه‌ای,
چکیده مقاله :
شبکه قدرت فعلی اشکالات زیادی دارد. اخیراً یک شبکه جدید و هوشمند برای رفع کاستی‌های شبکه فعلی معرفی شده که از آن با عنوان شبکه هوشمند انرژی یاد می‌شود. شبکه هوشمندی که بخواهد شبکه قدرت را به‌طور کارامدی مدیریت کند، به یک زیرساخت مخابراتی برای برقراری ارتباط بین اجزای شبکه نیاز دارد. فناوری مخابراتی رادیو شناختگر به‌منظور بهره‌برداری کارامدتر از منابع طیفی رادیویی معرفی شده است. مسیریابی در این شبکه‌ها باید توسط پروتکلی انجام شود که در مقابله با مشکلات ایجادشده توسط رادیو شناختگر گذردهی را حداکثر کند و تأخیر بسته‌ها در آن حداقل و مناسب کاربرد شبکه هوشمند انرژی باشد. CORPL به عنوان پروتکلی که بخشی از این اهداف را محقق می‌سازد معرفی شده است. در این مقاله پروتکل CORPL تحت بار ترافیکی برست و پواسون بررسی می‌گردد و نشان داده می‌شود که با افزایش کاربران فعال در شبکه عملکرد CORPL افت پیدا خواهد کرد. سپس با استفاده از روابط ریاضی کران بالای میانگین تأخیر در پروتکل CORPL مدل شده و برای کاهش آن یک طرح چنددروازه‌ای ارائه می‌گردد.
The conventional power grid has several drawbacks and a new powerful smart grid perspective has been recently introduced. The smart grid principle, allowing to efficiently manage an electrical grid network, needs to exploit a communication network for interconnecting the Smart Grid devices. An increasing interest is toward wireless communications due to their higher flexibility. Within this context cognitive radio (CR) techniques has been introduced aiming to exploit more efficiently the radio spectrum resources. In neighborhood area network (NAN), mesh grids can be considered as one of possible network topologies. In such networks no base station is required and data will be sent to gateway by means of nodes themselves. Hence, routing is one of the main issues in such networks. Routing in such networks should be done by a protocol which maximizes throughput against cognitive radio drawbacks and Packets delay in such protocol needs to be minimum and suitable for smart grids applications. CORPL has been introduced as a routing protocol to meet some of these goals. In this paper by CORPL functionality would be evaluated under burst and poisson traffic. It will be shown that by increasing active nodes, CORPL functionality would be decreased. Then average upper limit for delay would be mathematically modeled and to reduce that a multigate scheme would be introduced.
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