یک چارچوب برای استفاده از توابع مجازی سازی شبکه برای جریانهای ویدئویی
محورهای موضوعی : سامانه های پردازشی و ارتباطی چند رسانه ای هوشمند
علی اصغر خواصی
1
(دانشیار، دانشگاه سنتریا، فنلاند)
کلید واژه: کلودسیم, شبیه‌سازی مجازی, جریانهای ویدئویی, شبکه‌های نرم افزار محور, توابع مجازی شبکه, تابع شبکه مجازی‌سازی شده, زنجیره عملکرد سرویس,
چکیده مقاله :
در این تحقیق، روشی برای پخش ویدئو های آنلاین با استفاده از sdn/nfv که بتواند به در کاهش تاخیر و از دست رفتن بسته ها و کاهش هزینه ها کمک کند، بررسی شده است. نرم افزاری بودن روش و وابستگی کم به سخت افزار باعث کاهش هزینه های capex و opex میشود. شبکه های نرم افزار محور و مجازی سازی توابع شبکه در مهندسی فناوری اطلاعات به عنوان روشی جدید برای طراحی، استقرار و مدیریت خدمات شبکه معرفی شده اند. این مقاله معماری و نمونه اولیه مربوط به یک سرویس پخش ویدیویی متناسب با شبکه های فعال شده با SDN/NVF را ارائه می دهد و این امکان را فراهم می کند که توابع شبکه و برنامه های کاربردی، ساده سازی شده و هزینه های مدیریت کاهش یابد. راه حل پیشنهادی، ارائه دهندگان محتوای کوچک، متوسط و غیرمعمول را قادر می سازد بدون نیاز به اتخاذ یک زیرساخت تحویل داده ویژه و گران قیمت، رویدادهایی را با تعداد محدودی از کاربران علاقه مند به اشتراک بگذارند.
Introduction: This paper investigates a way to stream online videos using SDN / NFV that can help to reduce latency and packet loss and cost. This method reduces Capex and Opex costs due to its software and low hardware dependency. Software-centric networks and virtualization of network functions have been introduced in the computer networks arena as a new way to design, deploy and manage network services. Those can provide more flexible and more flexible and adaptable to the consumer and provider according to the needs of end users and service providers to consolidate and deliver network components using standard IT virtualization technologies. This paper presents the architecture and prototype of a video streaming service compatible with SDN / NVF-enabled networks, allowing simplified networking and applications and reduced management costs.Method: The simulation framework of this paper conforms to the MANO architecture to implement the standard NFV evaluation method. In CloudSim, each simulation occurs by sending and receiving events between modules.Results: As expected, NoScale-Min policies in both LFF and MFF methods lead to exceptionally long response times due to resource shortages in VNFs. On the other hand, the delay of the NoScale-Max policy is short due to resource constraints enough is assigned to the VNF.Discussion: In this paper, we proposed CloudSimSDN-NFV as a framework for new simulation tool of video streams to evaluate NFV features in edge and cloud environments along with other features of SDN and cloud computing environments. This framework is designed and developed on CloudSimSDN. We describe the modeling and simulation of NFV and edge computing and the detailed design and implementation of our framework. Two used scenarios were presented to help understand how to use the new tool, and several algorithms were implemented and evaluated based on the framework.
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