NeTS-NBD: Metro and Access Rings Integrated Network (MARIN)

最近，互联网流量几乎每年都翻一番。这种持续的指数增长给现有的电信基础设施带来了越来越大的压力，需要缓解这些压力，以适应未来的容量需求。如今，主要的瓶颈是接入网络层面，它位于个人用户和由网络运营商运营的中心局(CO)之间。目前的接入服务基于已安装的铜线基础设施，表现出基本带宽(每个用户的Mb/S数据速率)和距离限制。为了满足新兴数字业务对带宽的需求，光接入网络正在标准化和部署，每个终端用户可以使用更大的带宽(从数百Mb/S到GB/S)。光技术的最新发展使得光接入网络的实现具有可行性和成本效益，一旦宽带光接入网络占优势，总的需求将超过当前基于互联网协议(IP)路由器的网络基础设施的带宽供应。城域网络(MAN)连接互联网主干和本地接入点，通常跨越数十英里。传统上，SONET被部署来为语音业务提供电路链路。由于互联网应用产生的数据流量呈指数级增长，许多研究和标准化工作的目标是提供替代的大容量城域网体系结构和技术。(例如RPR、城域以太网等)为了促进当前网络向下一代光网络的演进，首席研究员(PI)将研究新颖的MARIN(城域和接入环综合网络)体系结构。MARIN是一种融合了接入网和城域网的综合网络，它利用波分复用(WDM)环技术和波长转换来消除接入网和城域网当前和预期的局限性。它将具有以下重要特点：(I)融合城域网和接入网的WDM环网技术，提供高容量；(Ii)随着用户数量的增加和数据速率的增加，具有高度的可扩展性；(Iii)适合从传统网络向未来光网络的平滑过渡；(Iv)基于光突发交换(OBS)的高速光路由；以及(V)利用波长转换来促进高速和低延迟的路由。PI将详细调查拟议的Marin架构的可行性。PI将利用先进的波长转换在接入网、MAN和OBS领域进行研究，随着时间的推移，这将变得更加一体化。更广泛的影响：这项工作将产生更广泛的影响，超出技术目标的狭隘实现。如果部分目标得以实现，Marin架构可能会影响未来通信网络的设计方式。因此，这项工作可能会产生相当大的经济影响。此外，通过改进通信系统的性能，这项工作可以促进人们通过互联网和其他手段进行交流的方式，这目前正在彻底改变人们的互动和工作方式。

Recently Internet traffic has almost doubled every year. This continued exponential growth is placing increasing strains on the existing telecommunication infrastructure, which will need to be relieved in order to accommodate future capacity requirements. Today the main bottleneck is at the level of the access network, which resides between the individual subscribers and the central office (CO) operated by the network carrier. The present access services are based on an installed copper-line infrastructure, exhibiting fundamental bandwidth (Mb/s data rate to each subscriber) and distance limitations. To satisfy the insatiable bandwidth demands for emerging digital services, optical access networks are being standardized and deployed, in which each end user can use a much larger bandwidth (hundreds of Mb/s to Gb/s). Recent developments in optical technologies have made the realization of the optical access network feasible and cost-effective for wide deployment.Once the broadband optical access network prevails, the aggregate demand will overwhelm the bandwidth provisioning of the current network infrastructure based on Internet protocol (IP) routers. Metropolitan area networks (MAN) connect the Internet backbone and local access points, typically spanning tens of miles. Traditionally, SONET has been deployed to provide circuit links for the voice traffic. Due to the exponentially increasing data traffic generated by Internet applications, many research and standardization efforts are aiming to provide alternate high-capacity MAN architecture and technology. (e.g. RPR, Metro Ethernet, etc.) To facilitate the evolution of the current network toward the next generation optical networks, the principal investigator (PI) will investigate the novel MARIN (Metro and Access Rings Integrated Network) architecture. MARIN is an integrated network that fuses the access networks and the MAN, and makes use of wavelength division multiplexing (WDM) ring technology and wavelength conversion for removing the current and anticipated limitations of both access network and MAN. It will have the following important characteristics: (i) WDM ring technology integrating MAN and access network, providing high capacity; (ii) Highly scalable as the number of users grows and the data rate increases; (iii) Suitable for smooth transition from legacy networks to the future optical networks; (iv) High-speed optical routing based on Optical Burst Switching (OBS); and (v) Exploiting wavelength conversion to facilitate routing for high speed and low latency. The PI will investigate in detail the feasibility of the proposed MARIN architecture. The PI will perform investigations in the areas of access networks, MAN, and OBS with advanced wavelength conversion, which will become more integrated as time progresses. Broader Impact: This work will have a broader impact beyond the narrow achievement of the technical goals. If some of the goals are reached, the MARIN architecture could influence the way future communication networks are designed. Hence, this work could have a sizeable economic impact. In addition, by improving the performance of communication systems, this work could facilitate the way people communicate via Internet and other means, which is currently revolutionizing the way people interact and work.