网络能耗系统模型及能效算法

网络能耗问题是当前网络研究和发展的重要问题,影响着网络的设计、应用和发展.当前网络能效算法的研究大多从网络局部角度关注于网络某一(些)设施的能耗问题,缺乏从网络全局的角度研究网络整体能耗的算法和策略.文中从网络全局角度研究网络的能耗模型和算法问题.文中基于3种基本网络数据传递模式和3种基本网络能耗机制,构建了网络能耗系统优化模型,对其中5种关键系统模型给出了详细的描述.针对几个关键系统模型,文中给出了形式化描述并且提出了相应的优化的节能路由算法.文中给出的网络系统能耗优化模型有助于对于网络能耗的理解和分析,所提出的能耗优化的网络数据包路由算法可以从网络路由的角度有效降低网络能耗.

Network Energy Consumption Models and Energy Efficient Algorithms

Energy consumption is a momentous problem that severely challenges further design and application of networks.While most researches work on a local view of some aspects(e.g.some devices used in networks) of the energy consumption problems in networks,there has been scarce research on a global view to reduce the amount of energy consumed at a network level(e.g.routing,network deployment).Energy consumption problem is investigated from network routing aspect in this paper.Energy consumption optimization strategies are developed from the aspect of network routing on the network system level.Combining three traffic arrival modes and three energy adaptation modes,optimized network energy consumption models are presented first.Further some energy efficient routing algorithms are developed for specific system models including the Continuous Flow with Speed Scaling model with bandwidth constraint,and the Continuous Flow with Rate Adaptation model.A model and corresponding algorithm for bi-criteria system are also developed so that a trade-off can be made between energy consumption and network delay.While the models can help understand the energy consumption optimization problems from the aspect of network routing on the network system level,the energy efficient routing algorithms can significantly reduce the energy consumed for network packet transmission.