کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6882921 694100 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimal planning of virtual content delivery networks under uncertain traffic demands
ترجمه فارسی عنوان
برنامه ریزی بهینه از شبکه های تحویل محتوا مجازی تحت مطالبات ناخواسته ترافیکی
کلمات کلیدی
توزیع محتوا، مجازی سازی عملکرد شبکه، تخصیص منابع، برنامه ریزی شبکه تصادفی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
چکیده انگلیسی
Content Delivery Networks (CDNs) have been identified as one of the relevant use cases where the emerging paradigm of Network Functions Virtualization (NFV) will likely be beneficial. In fact, virtualization fosters flexibility, since on-demand resource allocation of virtual CDN nodes can accommodate sudden traffic demand changes. However, there are cases where physical appliances should still be preferred, therefore we envision a mixed architecture in between these two solutions, capable to exploit the advantages of both of them. Motivated by these reasons, in this paper we formulate a two-stage stochastic planning model that can be used by CDN operators to compute the optimal long-term network planning decision, deploying physical CDN appliances in the network and/or leasing resources for virtual CDN nodes in data centers. Key findings demonstrate that for a large range of pricing options and traffic profiles, NFV can significantly save network costs spent by the operator to provide the content distribution service.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Networks - Volume 106, 4 September 2016, Pages 186-195
نویسندگان
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