Paper Info
Title
Caching Deployment Algorithm Based on User Preference in Device-to-Device Networks.
Abstract
In cache enabled D2D communication networks, the cache space in a mobile terminal is relatively small compared with the huge amounts of multimedia contents. As such, a strategy for caching the diverse contents in a multiple cache-enabled mobile terminals, namely caching deployment, will have a substantial impact to network performance. In this paper, a user preference aware caching deployment algorithm is proposed for D2D caching networks. Firstly, based on the concept of the user preference, the definition of user interest similarity is given, in which it can be used to evaluate the similarity of user preference. Then a content cache utility of a mobile terminal is defined by taking the communication coverage of this mobile terminal and the user interest similarity of its adjacent mobile terminals into consideration. The logarithmic utility maximization problem for caching deployment is formulated. Subsequently, we relax the logarithmic utility maximization problem, and obtain a low complexity near-optimal solution via dual decomposition method. The convergence of the proposed caching deployment algorithm is validated by simulation results. 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.
Year
Venue
Keywords
2017
IEEE Global Communications Conference
content caching,D2D,user preference,utility
Field
DocType
ISSN
Mobile computing,Software deployment,Telecommunications network,Cache,Computer science,Computer network,Real-time computing,Utility maximization problem,Distributed computing,Algorithm,False sharing,Smart Cache,Network performance
Conference
2334-0983
Citations 
PageRank 
References 
1
0.34
9
Authors
4
Name
Order
Citations
PageRank
Hongmei Fan110.68
Tiankui Zhang248762.41
Jonathan Loo344450.23
Dantong Liu425915.00