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On optimal proactiv...
On optimal proactive and retention-aware caching with user mobility
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- Ahani, Ghafour (author)
- Uppsala universitet,Datalogi,Optimisation
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- Yuan, Di (author)
- Uppsala universitet,Datalogi,Optimisation
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(creator_code:org_t)
- IEEE, 2018
- 2018
- English.
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In: 2018 IEEE 88th Vehicular Technology Conference (VTC-Fall). - : IEEE. - 9781538663585
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Caching popular contents at edge devices is an effective solution to alleviate the burden of the backhaul networks. Earlier investigations commonly neglected the storage cost in caching. More recently, retention-aware caching, where both the downloading cost and storage cost are accounted for, is attracting attention. Motivated by this, we address proactive and retention-aware caching problem with the presence of user mobility, optimizing the sum of the two types of costs. More precisely, a cost-optimal caching problem for vehicle-to-vehicle networks is formulated with joint consideration of the impact of the number of vehicles, cache size, storage cost, and content request probability. This is a combinatorial optimization problem. However, we derive a stream of analytical results and they together lead to an algorithm that guarantees global optimum with polynomial-time complexity. Numerical results show significant improvements in comparison to popular caching and random caching.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Publication and Content Type
- ref (subject category)
- kon (subject category)
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