NeTS: Small: Migration Towards Terascale Flexible-Grid Optical Networks

NetS：小型：向万亿级灵活网格光网络迁移

• 批准号: 1716945
• 负责人: Biswanath Mukherjee
• 金额: $ 50万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-07-15 至 2021-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1716945&HistoricalAwards=false
• 关键词: NeTS; Small; Migration; Towards; Terascale

Fiber optic networks are deployed worldwide in telecom backbone networks to carry the huge and exponentially growing amount of Internet traffic. However, this traffic growth is straining the capacity of fiber optic networks, which has led researchers to explore new ways of using the bandwidth available in them. Traditionally, a fiber's spectrum is divided into a fixed grid of equally-spaced optical channels. To squeeze more out of the available spectrum, this conventional fixed grid is evolving towards a flexible grid, where individual channels can be placed anywhere in the spectrum, and sized to match the traffic they carry. This research will investigate novel migration strategies from fixed-grid towards next-generation flexible-grid fiber networks, and strategies for maximizing the traffic a network can carry. This will enable high network efficiency, thus lowering the cost of the communications networks that underlie the Internet. Flex-grid technology holds enormous potential, but also brings with it significant complexity. This project tackles the two main issues associated with incorporating flex-grid technology into communications networks. First, it will investigate potential fixed-to-flex grid migration strategies, taking into account the complexities of device characteristics, detailed node architectures and physical (signal) impairments in network optimization studies. The project will systematically address possible upgrade paths, including which node(s) should be upgraded first, whether and where flex-grid 'islands' should be created within networks, and how many nodes should be upgraded for current network state. The project will use a 24-node nationwide network with aggregate terabit-per-second traffic demand to explore the relative advantages and disadvantages of each approach. The project's second major thrust is to tackle the problem of traffic grooming in such networks. While traditional traffic grooming is essentially a combined routing and (fixed-size) bin-packing problem, the focus here is on novel strategies to efficiently aggregate traffic as container (bin) sizes vary in time.

光纤网络在世界范围内部署在电信主干网络中，以承载巨大且呈指数级增长的互联网流量。然而，这种通信量的增长正在使光纤网络的容量变得紧张，这促使研究人员探索利用光纤网络中可用带宽的新方法。传统上，光纤的频谱被划分为固定的等间距光通道栅格。为了从可用的频谱中挤出更多空间，这种传统的固定网格正在向灵活的网格发展，在这种网格中，可以将各个频道放置在频谱中的任何位置，并调整大小以匹配它们所承载的流量。这项研究将研究从固定网格到下一代灵活网格光纤网络的新迁移策略，以及最大化网络可以承载的流量的策略。这将提高网络效率，从而降低作为互联网基础的通信网络的成本。灵活网格技术蕴含着巨大的潜力，但也带来了巨大的复杂性。该项目解决了与将灵活网格技术融入通信网络相关的两个主要问题。首先，它将调查潜在的从固定到灵活的网格迁移策略，考虑到网络优化研究中设备特征、详细节点架构和物理(信号)损伤的复杂性。该项目将系统地解决可能的升级途径，包括应首先升级哪个节点(S)，是否应在网络内以及在何处创建弹性网格‘孤岛’，以及应针对当前网络状态升级多少节点。该项目将使用一个24节点的全国网络，总流量需求为每秒太比特，以探索每种方法的相对优势和劣势。该项目的第二个主要目的是解决此类网络中的流量疏导问题。虽然传统的流量疏导本质上是路线选择和(固定大小)装箱的组合问题，但这里的重点是在集装箱(箱)大小随时间变化时有效聚合流量的新策略。

项目成果

Dynamic routing, spectrum, and modulation-format allocation in mixed-grid optical networks

• DOI: 10.1364/jocn.378370
• 发表时间: 2020-02
• 期刊: IEEE/OSA Journal of Optical Communications and Networking
• 作者: Tanjila Ahmed;Sabidur Rahman;Sifat Ferdousi;M. Tornatore;A. Mitra;Bijoy Chand Chatterjee;B. Mukherjee

Combating Resource Crunch in an Optical Network: Demand-Responsive Dynamic OSNR Margin Allocation

应对光网络中的资源紧缩：需求响应动态 OSNR 裕度分配

• DOI: 10.1109/ants.2018.8710040
• 发表时间: 2018
• 期刊: 2018 IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS
• 作者: Rafael Lourenco, B. R.;Tornatore, Massimo;Mukherjee, Biswanath
• 通讯作者: Mukherjee, Biswanath

C to C+L Bands Upgrade with Resource Re-provisioning in Optical Backbone Networks

通过光骨干网络中的资源重新配置实现 C 至 C L 频段升级

• 发表时间: 2021
• 期刊: Optical Fiber Communications (OFC
• 作者: Ahmed, Tanjila;Rahman, Sabidur Rahman;Pradhan, Aniket;Mitra, Abhijit;Tornatore, Massimo;Lord, Andrew;Mukherjee, Biswanath
• 通讯作者: Mukherjee, Biswanath

A novel bandwidth allocation scheme for OTSS-enabled flex-grid intra-datacenter networks

• DOI: 10.1007/s11107-021-00933-z
• 发表时间: 2021-08
• 期刊: Photonic Network Communications
• 影响因子: 1.7
• 作者: Lin Wang;Xinbo Wang;M. Tornatore;Kwangjoon Kim;B. Mukherjee

Crosstalk-Aware Core and Spectrum Assignment in a Multicore Optical Link With Flexible Grid

• DOI: 10.1109/tcomm.2018.2881697
• 发表时间: 2019-03
• 期刊: IEEE Transactions on Communications
• 影响因子: 8.3
• 作者: C. Rottondi;P. Martelli;P. Boffi;L. Barletta;M. Tornatore