NeTS-FIND: Collaborative Research: Architectural Support for Selectively-Connected End Systems: Enabling an Energy-Efficient Future Internet

NetS-FIND：协作研究：选择性连接终端系统的架构支持：实现节能的未来互联网

• 批准号: 0721933
• 负责人: Mark Allman
• 金额: $ 22万
• 依托单位: International Computer Science Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0721933&HistoricalAwards=false
• 关键词: NeTS; FIND; Collaborative; Research; Architectural

Many architectural elements of today's Internet implicitly assume that hosts remain attached to the network over extended periods of time. However, there is much to be gained by supporting a style of networking that does not require an end system to maintain full, ongoing connectivity in order to maintain its network "presence." In this project we explore a style of networking that we term "selectively-connected", by which we mean an end system, can knowingly manage the extent of its network connectivity in response to internal or exterior events, as it anticipates changes in connectivity. While selectively-connected networking also has applications for end systems that enter outage periods (e.g., a user closing a notebook, or a mobile device entering no-coverage area), one highly significant form of operation it can enable concerns placing end systems into some degree of "sleep" in order to operate with much greater energy efficiency. Such sleeping not only can benefit portable devices by greatly extending their battery lifetime, but can also realize energy savings at a national scale by enabling desktop systems and set-top devices to enter states of greatly reduced processing without sacrificing their network presence. In this project the researchers undertake initial designs of new architectural components for better supporting selectively-connected networking, by which sleeping hosts can retain their standing in the network or delegate agents to act on their behalf during their absence. These span: exposing selective connectivity; evolving soft state into notions of "proxyable" or "limbo" state; facilitating host-based control; introducing "assistants" to work in concert with sleeping end systems; exploring primitives that applications might use to express the semantics they wish to preserve when selectively-connected; and considering network links that can themselves sleep when the end systems they serve are likewise sleeping.

当今互联网的许多架构元素隐含地假设主机在较长时间内保持连接到网络。 然而，通过支持一种不需要终端系统保持完整、持续的连接来维持其网络“存在”的网络风格，可以获得很多好处。 在这个项目中，我们探索了一种称为“选择性连接”的网络风格，我们指的是终端系统，可以有意识地管理其网络连接的范围，以响应内部或外部事件，因为它预测连接的变化。 虽然选择性连接网络也适用于进入中断期的终端系统（例如，用户关闭笔记本电脑或移动设备进入无覆盖区域），但它可以实现一种非常重要的操作形式，即将终端系统置于某些情况下。一定程度的“睡眠”，以便以更高的能源效率运行。 这种休眠不仅可以大大延长便携式设备的电池寿命，从而使便携式设备受益，而且还可以通过使桌面系统和机顶设备在不牺牲其网络存在的情况下进入大幅减少处理的状态，从而在全国范围内实现节能。 在该项目中，研究人员对新的架构组件进行了初步设计，以更好地支持选择性连接的网络，通过该网络，休眠主机可以保留其在网络中的地位，或委托代理在其不在时代表其行事。 这些范围包括：暴露选择性连接；将软状态发展为“可代理”或“地狱边境”状态的概念；促进基于主机的控制；引入“助手”与睡眠端系统协同工作；探索应用程序可能用来表达它们在选择性连接时希望保留的语义的原语；并考虑当它们所服务的终端系统同样处于休眠状态时，网络链路本身也可以休眠。