NEDG: Next-Generation Long-Reach Broadband Access Networks

我们的社会越来越依赖互联网来即时获取信息。宽带接入可以对社会产生非常强有力的积极影响。美国在向其公民提供廉价宽带接入方面落后。 需要进行研究，开发下一代宽带接入技术，从而带来新的竞争性服务和应用。 新奇：该项目正在创造关于新型长距离宽带接入网络（LR-BAN）架构、资源分配算法和网络演进以适应流量增长的设计、部署和运营的新知识。 更广泛的影响：该项目使美国研究人员能够领导下一代宽带接入网络的开发。 这个综合性的研究和教育项目将通过学生培训加强我国的教育基础设施，并通过其研究成果影响美国电信业。具体而言，该项目正在研究新的网络架构、协议和算法，以设计和有效运营下一代宽带接入网络，该网络可以在电信网络中提供跨本地和大城市区域的扩展覆盖。该项目正在开发有效的方法来扩大今天的覆盖面？通过利用波分复用无源光网络（WDM-PON）服务于庞大的用户群，将光纤到户（FTTH）网络从20 km限制扩展到100 km及更远，从而形成长距离宽带接入网（LR-BAN）。 LR-BAN架构可以有效地减少电信运营商网络中中心局的数量，降低运营支出。 该项目正在研究各种LR-BAN架构选项（例如？戒指和马刺？架构）;灵活地按需分配带宽给具有不同需求的用户的方法（例如？多线程轮询？）;以及使网络向未来可靠的宽带应用和技术演进的方法。

Our society is increasingly dependent on the Internet for instant access to information. Broadband access can have a very strong positive impact on society. The US is lagging behind in providing inexpensive broadband access to its citizens. Research is needed to develop next-generation broadband access technologies which will lead to new competitive services and applications. Novelty: This project is creating new knowledge on the design, deployment, and operation of the novel Long-Reach Broadband Access Network (LR-BAN) architecture, resource-allocation algorithms, and network evolution to accommodate traffic growth. Broader Impact: This project is enabling US researchers to lead the development of next-generation Broadband Access Networks. This comprehensive and integrated research and education project should enhance our nation's educational infrastructure through student training and influence the US telecom industry with its findings.Specifically, this project is investigating novel network architectures, protocols, and algorithms to design and efficiently operate next-generation broadband access networks that can provide extended coverage across local and metropolitan regions in telecom networks. The project is developing efficient methods for extending the coverage of today?s Fiber-to-the-Home (FTTH) networks from their 20-km limit to 100 km and beyond by exploiting wavelength-division multiplexing passive optical networks (WDM-PONs) to serve a large user base, leading to the Long-Reach Broadband Access Network (LR-BAN). The LR-BAN architecture can effectively decrease the number of Central Offices in a telecom operator's network and reduce its Operational Expenditure. This project is investigating various LR-BAN architectural options (such as ?ring-and-spur? architecture); methods to flexibly allocate bandwidth on demand to users with a diverse set of requirements (such as ?multi-thread polling?); and methods to evolve the network toward future reliable broadband applications and technologies.