標題: Cooperative Online Caching in Small Cell Networks with Limited Cache Size and Unknown Content Popularity
作者: Yen, Chen-Tai
Chien, Feng-Tsun
Chang, Min-Kuan
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: content caching;small cell;5G;coordinated multipoint
公開日期: 1-一月-2018
摘要: In this paper, we study delay-aware cooperative online content caching with limited caching space and unknown content popularity in dense small cell wireless networks. We propose a Cooperative Online Content cAching algorithm (COCA) that decides in which BS the requested content should be cached with considerations of three important factors: the residual cache space in each small cell basestation (SBS), the number of coordinated connections each SBS establishes with other SBSs, and the number of served users in the coverage area of each SBS. In addition, due to limited storage space in the cache, the proposed COCA algorithm eliminates the least recently used (LRU) contents to free up the space. We compare the delay performance of the proposed COCA algorithm with the existing offline cooperative caching schemes through simulations. Simulation results demonstrate that the proposed COCA algorithm has a better delay performance than the existing offline algorithms.
URI: http://hdl.handle.net/11536/150774
期刊: PROCEEDINGS OF 2018 3RD INTERNATIONAL CONFERENCE ON COMPUTER AND COMMUNICATION SYSTEMS (ICCCS)
起始頁: 173
結束頁: 177
顯示於類別:會議論文