光通信系统全生命周期能效探讨

Discussion of Full Lifecycle Energy Efficiency of Optical Communication Systems

【目的】文章面向节能降碳探讨光通信系统的全生命周期能效,建立了不限于具体技术或结构,涵盖系统生命周期各阶段的能效描述通用模型,并分析了光通信系统能效提升的关键影响因素。【方法】从有用功效和能耗两个方面分别进行探讨,以建立光通信系统能效的通用模型。在有用功效的表述中,除通常使用的速率要素外,引入距离要素作为主要影响因素之一,并建议将特定场景应用中数据传输满足质量要求及网络保持连接状态产生的价值纳入有用功效,将这种描述方式命名为综合有用功效。在能耗的探讨中,将系统生命周期分解为生产制造、安装建设、运行维护和废弃回收4个阶段分别分析。基于所建立的通用模型对能效提升的主要影响因素进行探讨。【结果】研究形成以下观点:(1)距离要素可作为评价系统有用功效的主要因素之一,同时也是影响系统生命周期各阶段能耗的因素;(2)面向新场景和新应用,在系统有用功效中为数据传输满足特定质量要求设定权值并为保持连接状态赋值,可体现系统为满足场景应用需求所付出的能耗代价带来的价值;(3)系统全生命周期能耗需要考虑生命周期各阶段的能耗因素,并可将各阶段能耗以系统运行寿命折算到单位时间上进行累加;(4)合理的网络拓扑和路由设计、降低线路损耗与光传输技术和设备设施节能技术的演进同样都是降低系统全生命周期能耗、提升能效的重要手段。【结论】能效描述通用模型在系统有用功效和能耗的表述中均把距离要素作为重要影响因素,将光通信系统在通信距离上的价值体现和因距离带来的生命周期各阶段能耗对应起来,同时也建议将数据传输满足特定质量要求及网络保持连接状态产生的价值纳入有用功效的考量。该模型可更全面地对光通信系统的能效进行评价以促进系统能效提升,并且能够适应和推动光通信系统在新场景中的应用。

【Objective】This paper discusses full lifecycle energy eficiency of optical communication systems in the purpose of energy conservation and carbon reduction.It aims to establish a universal model for description of energy eficiency,which covers all stages of system lfecycle,and it is not limited to specific technologies or network structures.It also analyzes the key influencing factors for improvement of energy efficiency of optical communication systems.【Methods】This paper explores the useful work and energy consumption of optical communication systems,to establish a universal model for energy eficiency.In the expression of useful work,in addition to the commonly used factor data rate,distance factor is introduced as an important factor.The paper recommends that the value generated by data transmissions which meet specific quality requirements and maintaining network connectivity in specific scenario applications should be considered in the description of the useful efficacy.The description method is named as comprehensive useful efficacy.In the discussion of energy consumption,the system lifecycle is decomposed into four stages:manufacturing,installation and construction,operation and maintenance,and waste recycling.Main influencing factors of energy eficiency improvement are discussed based on the established model.【Results】Main results of the research include:(1)Distance factor can be one of the main factors for evaluating the useful work of a system,and distance factors affect energy consumption at various stages of the system's lfecycle;(2)For new scenarios and applications,setting weights for data transmissions which meet specific quality requirements and assigning values for maintaining connectivities status in description of the system useful work could reflect the value brought by the energy cost of the system to meet the needs of scenario applications;(3)Energy consumption factors of each stage of the life cycle should be considered in evaluation.of energy consumption of the full lifecycle,and the energy consumption of each stage should be converted into unit time based on the system operating life for accumulation;(4)Optimized network topology and routing design,reduction of line losses,as well as evolution of optical transmission technology and equipment/facility energy saving technologies,are important means to reduce energy consumptions throughout the entire lifecycle of the system and improve the energy efficiency.【Conclusion】This Paper discusses the comprehensive useful work and full life cycle energy consumption of optical communication systems,and establishes a universal model to describe the full life cycle energy efficiency of the system.This model takes distance as an important influencing factor in the expression of the useful efficiency and also energy consumption of the system,which corresponds the value of the optical communication system based on communication distance with the energy consumption in the lifecycle caused by distances.It also suggests considering the value generated by data transmissions which meet specifice quality requirements and maintaining network conectivity in the evaluation of the useful efficiency.This model could comprehensively evaluate the energy efficiency of optical communication systems,for improvements of system energy efficiency,and could adapt and promote applications of optical communication systems in new scenarios.