Presentations

We have proposed Switched RoF which inserted optical switch in the middle of A-RoF transmission for beyond 5G mobile front haul. Feasibility of adopting MEMS optical switch with installed hollow core fiber and no QoE degradation by handover using optical switching was confirmed.

In present Internet, users obtain content by appointing IP address because network architecture is “host-to-host”. However, new network architecture of “user-to-data” is needed because users need data, not IP address. Then we have proposed Energy Efficient and Enhance-type Data-centric Networking (E3-DCN) architecture to implement content-oriented network. E3- DCN realizes Data-centric Networking and to reduce power consumption effectively. In this paper, we implement Network Application Programming Interface (API) which has been proposed in E3-DCN to reduce power consumption effectively. We simulate to show effectiveness of Network API and show reduction of power consumption.

This paper proposes a resource allocation scheme for Hadoop in campus networks in order to maximize the performance in terms of processing time by utilizing the outdated computational resources. The proposed scheme splits the job with appropriate splitting ratios according to both computer processing performance and network resource availability. In the other words, the job is divided into different proportion of tasks and then they are assigned to slave servers according to both computer processing performance and network resource availability. The simulation results indicate that the proposed scheme is effective.

Elastic optical network enables flexible bandwidth change according to request of bandwidth. In this paper, we focus on the problem of serving dynamic sub-carriers request. We propose adaptive sub-carriers allocation which utilize grouping based on traffic fluctuation estimate.