NeTS: Medium: Green Net: Energy Management for Network Infrastructure

互联网作为我们社会不可缺少的通信系统，在能源消耗中占有一定的份额。然而，底层网络基础设施缺乏有效的能源管理解决方案。能源消耗不仅在经济和环境上具有成本效益，而且已成为系统性能的限制因素。今天的网络在设计上过度配置，在运行上负载均衡，以获得最大性能，导致路由器和链路即使在利用率非常低的情况下也会消耗接近峰值的能量。本项目利用路由路径冗余和低链路利用率，设计智能路由方案，使链路在网络业务量低时处于休眠状态，在业务量高时唤醒链路为业务量服务，从而在保证网络性能的同时降低能耗。为了实现这一目标，将设计和评估互联网服务提供商中用于功率感知网络路由、流量工程和拓扑结构的新算法和协议。一个节能的网络基础设施将导致一个更环保的互联网，并使isp能够减少能源消耗，同时仍然提供理想水平的QoS。此外，互联网服务提供商将能够在能源受限的环境中部署网络基础设施，例如灾后恢复和欠发达地区。本项目开发的工具和技术将为网络能源管理的研究提供一个平台和方向。

The Internet as an indispensable communication system in our society has its share in energy consumption. The underlying network infrastructure, however, lacks effective energy management solutions. Not only does the energy consumption cost financially and environmentally, it also has becoming a limiting factor in system performance. Today's networks are aggressively over-provisioned in design and load-balanced in operation for maximum performance resulting in routers and links consuming close to peak energy even when highly underutilized. This project exploits routing path redundancy and low link utilization to design smart routing schemes that allow links to sleep when the network traffic load is low, and wake them up to serve the traffic when the load is high, thus reducing energy consumption while preserving network performance. To achieve this, novel algorithms and protocols for power-aware network routing, traffic engineering, and topology in Internet Service Providers will be designed and evaluated. An energy-efficient network infrastructure will lead to a greener Internet and enable ISPs to reduce energy consumptions while still providing QoS at desired levels. In addition, ISPs will be able to deploy network infrastructure in energy-constrained environments, such as post-disaster recovery and under-developed areas. The tools and techniques developed in this project will provide the research community with a platform and direction for research in network energy management.