Cache Migration Strategies at the Edge of LTE Mobile Networks

Authors

Abstract

With a boom in the usage of mobile devices for traffic- heavy applications, mobile networks struggle to deliver good performance while saving resources to support more users and save on costs. Although some works already propose offloading strategies to deal with this issue, they still do not provide an effective solution for the problem as the literature shows that they can only be applied to roughly half of the requests. In this talk, we take the approach of edge caching with Information- Centric Networking and propose strategies for the pre- emptive migration of those caches at the edge of LTE mobile networks based on user mobility, content pop- ularity and other relevant factors. With such migra- tion strategies, the concept of content following the users interested in it becomes a reality, and content within caches is more optimized towards the requests of nearby users. Therefore, cache space is used more effi- ciently and cache hits increase dramatically, with clear benefits for both end users and network providers. The results of our experiments show that proposed strate- gies are valid and in most cases select the optimal lo- cations and content objects for migration. Also, when compared to default cache strategies, cache hits are higher with different types of traffic, meaning that con- tent is delivered faster while saving a large quantity of bandwidth at the core of the network.

Keywords

Information-Centric Networking, Content Migration, Caching, LTE

Subject

2015 Doctoral Workshop on Distributed Systems

TechReport Number

INF-15-002

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