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Energy Efficient Caching in Backhaul-Aware Cellular Networks with Dynamic Content Popularity
المؤلفون المشاركون
Chen, Bing
Wang, Ran
Ji, Jiequ
Zhu, Kun
Dai, Chen
المصدر
Wireless Communications and Mobile Computing
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-12، 12ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-04-08
دولة النشر
مصر
عدد الصفحات
12
التخصصات الرئيسية
تكنولوجيا المعلومات وعلم الحاسوب
الملخص EN
Caching popular contents at base stations (BSs) has been regarded as an effective approach to alleviate the backhaul load and to improve the quality of service.
To meet the explosive data traffic demand and to save energy consumption, energy efficiency (EE) has become an extremely important performance index for the 5th generation (5G) cellular networks.
In general, there are two ways for improving the EE for caching, that is, improving the cache-hit rate and optimizing the cache size.
In this work, we investigate the energy efficient caching problem in backhaul-aware cellular networks jointly considering these two approaches.
Note that most existing works are based on the assumption that the content catalog and popularity are static.
However, in practice, content popularity is dynamic.
To timely estimate the dynamic content popularity, we propose a method based on shot noise model (SNM).
Then we propose a distributed caching policy to improve the cache-hit rate in such a dynamic environment.
Furthermore, we analyze the tradeoff between energy efficiency and cache capacity for which an optimization is formulated.
We prove its convexity and derive a closed-form optimal cache capacity for maximizing the EE.
Simulation results validate the proposed scheme and show that EE can be improved with appropriate choice of cache capacity.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Ji, Jiequ& Zhu, Kun& Wang, Ran& Chen, Bing& Dai, Chen. 2018. Energy Efficient Caching in Backhaul-Aware Cellular Networks with Dynamic Content Popularity. Wireless Communications and Mobile Computing،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1216236
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Ji, Jiequ…[et al.]. Energy Efficient Caching in Backhaul-Aware Cellular Networks with Dynamic Content Popularity. Wireless Communications and Mobile Computing No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1216236
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Ji, Jiequ& Zhu, Kun& Wang, Ran& Chen, Bing& Dai, Chen. Energy Efficient Caching in Backhaul-Aware Cellular Networks with Dynamic Content Popularity. Wireless Communications and Mobile Computing. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1216236
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1216236
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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