Intelligent data cache based on content popularity and user location for Content Centric Networks

Hsin-Te Wu,Fan-Hsun Tseng,Hsin-Hung Cho,Sheng-Jie Wang

doi:10.1186/s13673-019-0206-5

Abstract

Content cache as well as data cache is vital to Content Centric Network (CCN). A sophisticated cache scheme is necessary but unsatisfied currently. Existing content cache scheme wastes router’s cache capacity due to redundant replica data in CCN routers. The paper presents an intelligent data cache scheme, viz content popularity and user location (CPUL) scheme. It tackles the cache problem of CCN routers for pursuing better hit rate and storage utilization. The proposed CPUL scheme not only considers the location where user sends request but also classifies data into popular and normal content with correspond to different cache policies. Simulation results showed that the CPUL scheme yields the highest cache hit rate and the lowest total size of cache data with compared to the original cache scheme in CCN and the Most Popular Content (MPC) scheme. The CPUL scheme is superior to both compared schemes in terms of around 8% to 13% higher hit rate and around 4% to 16% lower cache size. In addition, the CPUL scheme achieves more than 20% and 10% higher cache utilization when the released cache size increases and the categories of requested data increases, respectively.

Highlights

In the era of rapid technology development, various Internet applications accompany with extreme loading are rife with existing networks, no matter in wired or wireless network
In [34], we proposed a cache scheme that categories content into popular content and normal content
An intelligent cache scheme named Content Popularity and User Location (CPUL) is proposed to determine what kind of data should be cached in which router at the same time

Summary

Introduction

In the era of rapid technology development, various Internet applications accompany with extreme loading are rife with existing networks, no matter in wired or wireless network. Where to cache the popular and normal content is vital to improve cache hit rate time when user requests data. An intelligent cache scheme named Content Popularity and User Location (CPUL) is proposed to determine what kind of data should be cached in which router at the same time.

Results

Conclusion