Abstract
Edge-centric computing (ECC) and content- centric networking (CCN) will be the most important technologies in future 5G networks. However, due to different architectures and protocols, it is still a challenge to fuse ECC and CCN together and provide manageable and flexible services. In this article, we present ECCN, an orchestrating scheme that integrates ECC and CCN into a hierarchical structure with software defined networking (SDN). We introduce the SDN technology into the hierarchical structure to decouple data and control planes of ECC and CCN, and then design an SDN protocol to control the data forwarding. We also implement two demonstration applications in our testbed to evaluate the ECCN scheme. The experimental results from the testbed applications, and extensive simulations show ECCN outperforms original structures.
Highlights
centric networking (CCN) into a hierarchical structure with software defined networking (SDN)
Unlike traditional edge computing focusing on offloading tasks from cloud servers, Edge centric computing (ECC) services are mainly provided in edge servers while the cloud server plays a secondary role
We propose ECCN for the 5G radio access network (RAN) shown in Fig. 2 for supporting the discussed scenario
Summary
Content centric networking (CCN) is an emerging technology for distributing contents to users, which makes content directly addressable and routable in networks [1]. The communication between cloud servers and end users is still a challenge in mobile computing due to the limited performance of wireless networks and RANs [4]. Both ECC and CCN can improve the communication performance by reducing the distance between users and services. With the fusion of ECC and CCN, service providers can keep content and computing resources much closer to the end users, which reduces the communication overhead between end users and cloud servers. In mobile ECC environments, most edge servers are deployed near to the base station, while in CCN, the content cache services are deployed in routing devices from the core network to the base station.
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