Abstract

In this paper, we present a novel DC-centric architecture of telecommunication networks for next generation Internet. Data flow become the major traffic in existing telecommunication networks. Traditional computer networks and telecom networks meet many challenges in high-quality service, innovation, evolution, and management. Based on analysis existing telecom networks’ challenges, a DC-centric telecom network architecture with splitting the data plane from the control plane is proposed. The DC-centric telecom network is a widely-distributed data center network (DCN), which is composed of thousands of public or private DCs. Each DC not only plays the role of storage and computing, but also is a network node of data aggregation, switching, and routing. We also design an optical switching, which is evaluated by experiment.

Highlights

  • With the development of cloud computing, mobile internet, Internet of Things and virtual reality technologies, data flow become the major traffic in existing telecommunication networks

  • To many new technologies and applications such as 5G, unmanned aerial vehicle (UAV), and cloud computing in the Networked Society, designers of telecom are engaged in cope with the needed dimension of latency with sub millisecond(ms) and improving fault tolerance

  • With the business and application driving scalability, agility, cost-savings, energy efficiency and differentiation services needs for telecom networks, more requirements are emerging [9,10,11], which can be summarized to the following as simplification, virtualization, programmability, automation, and opensource

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Summary

Introduction

With the development of cloud computing, mobile internet, Internet of Things and virtual reality technologies, data flow become the major traffic in existing telecommunication networks. Driven by a rapid growth of Internet-based applications, data center (DC) has emerged as a crucial infrastructure, and been receiving significant research interest both from academia and industry. The forecast by the Cisco Global Cloud Index (GCI) presents that hyperscale data centers will grow from 259 in number at the end of 2015 to 485 by 2020. The amount of annual global data center traffic in 2020 will be triple 4.7 ZB estimated in 2015 to reach to 15.3 ZB. By 2020, 92 percent of workloads will be processed by cloud data centers in the forecast [3]. As highly heterogeneous, low reliability, longer latency, low energy efficiency, ossification effect and hard to manage, are becoming obstacles to the development of the generation Internet

Architecture and challenges of existing telecommunication networks
Unable to meet the requirements of highquality service
DC-centric Architecture
Causing the network ossification effect
Increasing capital and operational cost
Hard to manage
Physical DCN Layer
Advantage of DC-centric Telecom Network
Design on Key Components
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