User preference aware caching deployment for device-to-device caching networks

Zhang, Tiankui, Fan, Hongmei, Loo, Jonathan ORCID: and Liu, Dantong (2017) User preference aware caching deployment for device-to-device caching networks. IEEE Systems Journal, 13 (1). pp. 226-237. ISSN 1932-8184

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Content caching in the device-to-device (D2D) cellular networks can be utilized to improve the content delivery efficiency and reduce traffic load of cellular networks. In such cache-enabled D2D cellular networks, how to cache the diversity contents in the multiple cache-enabled mobile terminals, namely, the caching deployment, has a substantial impact on the network performance. In this paper, a user preference aware caching deployment algorithm is proposed for D2D caching networks. First, the definition of the user interest similarity is given based on the user preference. Then, a content cache utility of a mobile terminal is defined by taking the transmission coverage region of this mobile terminal and the user interest similarity of its adjacent mobile terminals into consideration. A general cache utility maximization problem with joint caching deployment and cache space allocation is formulated, where the special logarithmic utility function is integrated. In doing so, the caching deployment and the cache space allocation can be decoupled by equal cache space allocation. Subsequently, we relax the logarithmic utility maximization problem, and obtain a low complexity near-optimal solution via a dual decomposition method. Compared with the existing caching placement methods, the proposed algorithm can achieve significant improvement on cache hit ratio, content access delay, and traffic offloading gain.

Item Type: Article
Identifier: 10.1109/JSYST.2017.2773580
Additional Information: © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Keywords: Content caching, device-to-device (D2D) communication, user preference
Subjects: Computing > Systems > Computer networking
Computing > Systems > Distributed computing
Computing > Systems
Related URLs:
Depositing User: Jonathan Loo
Date Deposited: 01 Jan 2018 21:51
Last Modified: 06 Feb 2024 15:55


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