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Using CSMA/CD for Ethernet Passive Optical Network (EPON) 被引量:1
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作者 季晓飞 范戈 《Journal of Shanghai Jiaotong university(Science)》 EI 2004年第2期25-28,共4页
Using CSMA/CD for EPON can eliminate the augmentations, such as multi-point control protocol and point-to-point emulation, added to the existing 802.3 architecture due to the incompatibility of PON to Ethernet. Both f... Using CSMA/CD for EPON can eliminate the augmentations, such as multi-point control protocol and point-to-point emulation, added to the existing 802.3 architecture due to the incompatibility of PON to Ethernet. Both full-duplex EPON system and half-duplex EPON system using CSMA/CD were proposed. In the full-duplex EPON, CSMA/CD is used as the upstream MAC protocol. In the half-duplex EPON system, both upstream and downstream traffic contend for the optical channel through CSMA/CD protocol. The upstream lightwave redirection and collision detection techniques were given. By the analysis and simulation, the throughput performance of the half-duplex EPON system is proven to be as well as that of the existing high speed half-duplex Ethernet LAN. 展开更多
关键词 ethernet passive optical network carrier sense multiple access optical access network
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Modeling for Ethernet passive optical network receiver
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作者 张亮 王志功 +1 位作者 胡庆生 邓伟杰 《Journal of Southeast University(English Edition)》 EI CAS 2009年第4期439-444,共6页
A behavior model for the receiver of the Ethernet passive optical network(EPON) is presented. The model consists of a fiber, a photodetector, a transimpedance amplifier (TIA) followed by a limiting amplifier and a... A behavior model for the receiver of the Ethernet passive optical network(EPON) is presented. The model consists of a fiber, a photodetector, a transimpedance amplifier (TIA) followed by a limiting amplifier and a clock and data recovery' circuit (CDR). Each sub-model is constructed based on the architecture of a circuit. The noise and jitter in each block such as shot noise, thermal noise, deterministic and random jitter are also considered. The performance of the whole receiver can be evaluated by the simulation of the behavior model, which is faster than the ordinary circuit model and more accurate than the analytical model. The whole model is implemented with C ++ and simulated in Microsoft Visual C ++ 6. 0. Using the Monte Carlo method, the EPON receiver is simulated. The simulation results show a good agreement with experimental ones. 展开更多
关键词 Ethel'net passive optical network(epon) behavior model noise JITTER clock and data recovery circuit(CDR)
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Implementation of access controller for Ethernet passive optical network 被引量:2
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作者 邹君妮 陈健 林如俭 《Journal of Shanghai University(English Edition)》 CAS 2006年第5期425-430,共6页
This paper presents the design and implementation of access controller used for Ethernet passive optical network ( EPON). As a first step to develop an ASIC product, the entire system is designed on a field programm... This paper presents the design and implementation of access controller used for Ethernet passive optical network ( EPON). As a first step to develop an ASIC product, the entire system is designed on a field programmable gate array (FPGA) with an embedded CPU. To reduce working frequency of the FPGA, the byte-to-word conversion is proposed. Propagation delays are equalized by ranging procedure so as to avoid data collision. Implementations of synchronization, classification, as well as Linux porting are illustrated in detail. The interface between the FPGA and CPU are also presented. Experimental results show that the proposed system can properly function in a relatively low cost FPGA. 展开更多
关键词 ethernet passive optical network broadband access field programmable gate array embedded system.
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A novel algorithm for Ethernet-passive-optical-network dynamic bandwidth allocation based on threshold
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作者 汪学舜 《Journal of Chongqing University》 CAS 2011年第1期45-50,共6页
The Ethemet passive optical network (EPON) is the next generation of broad-band network technique. A crucial issue in EPONs is the sharing of uplink bandwidth among optical network units (ONUs). This article provi... The Ethemet passive optical network (EPON) is the next generation of broad-band network technique. A crucial issue in EPONs is the sharing of uplink bandwidth among optical network units (ONUs). This article provides a novel dynamic bandwidth allocation algorithm, i.e. threshold dynamic bandwidth allocation (TDBA), which is based on adaptive threshold, to increase resource utilization. The algorithm uses ONU data-transmitting rate to adjust optical line terminal (OLT) receiving data threshold from an ONU. Simulation results show that this algorithm can decrease average packet delay and increase network throughput in a l 0G EPON system. 展开更多
关键词 ethernet passive optical network (epon dynamic bandwidth allocation (DBA) optical network unit (ONU) optical line terminal (OLT): oolling cvcle
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QoS Guaranteed and Adaptive Downstream Bandwidth Utilization Scheme for Ethernet Passive Optical Networks
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作者 Chen Liu Xiao-Mei Fu Hong-Wei Zhang 《Journal of Electronic Science and Technology》 CAS 2011年第2期145-154,共10页
Dynamic bandwidth allocation(DBA) is an open and hot topic in the Ethernet passive optical network(EPON) ,which is regarded as one of the best choices for next-generation access networks. However,most proposed DBA... Dynamic bandwidth allocation(DBA) is an open and hot topic in the Ethernet passive optical network(EPON) ,which is regarded as one of the best choices for next-generation access networks. However,most proposed DBA schemes ignore the quality of service(QoS) guarantee on maximum delay and delay jitter for the real-time traffic and the downstream bandwidth utilization under light upstream load in EPON. In this paper,a new DBA scheme,QoS guaranteed adaptive downstream bandwidth utilization(QoS-ADBU),is proposed. This scheme can provide better QoS assurance by determining the maximum transmission cycle time according to the maximum acceptable packet delay and delay jitter for real-time traffic. Besides,the downstream utilization can also be improved by adapting the polling frequency to downstream traffic load. 展开更多
关键词 Downstream bandwidth utilization dynamic bandwidth allocation ethernet passive optical network quality of service guarantee
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Echo-state-network classification based multi-services awareness in high-speed optical passive networks
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作者 白晖峰 Ye Quanyi 《High Technology Letters》 EI CAS 2017年第1期48-53,共6页
With the challenge of great growing of services diversity,service-oriented supporting ability is required by current high-speed passive optical network( PON). Aimed at enhancing the quality of service( Qo S) brought b... With the challenge of great growing of services diversity,service-oriented supporting ability is required by current high-speed passive optical network( PON). Aimed at enhancing the quality of service( Qo S) brought by diversified-services,this study proposes an echo state network( ESN)based multi-service awareness mechanism in 10-Gigabite ethernet passive optical network( 10GEPON). In the proposed approach,distributed architecture is adopted to realize this ESN based multi-service awareness. According to the network architecture of 10G-EPON,where a main ESN is running in OLT and a number of ESN agents works in ONUs. The main-ESN plays the main function of service-awareness from the total view of various kinds of services in 10G-EPON system,by full ESN training. Then,the reservoir information of well-trained ESN in OLT will be broadcasted to all ONUs and those ESN agents working in ONUs are allowed to conduct independent service-awareness function. Thus,resources allocation and transport policy are both determined only in ONUs. Simulation results show that the proposed mechanism is able to better support the ability of multiple services. 展开更多
关键词 10-Gigabite ethernet passive optical network (10G-epon) multi-services aware-ness echo state network (ESN) reservoir computation
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Design and implementation of ethernet passive electronic network over coax
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作者 黄晶 Liu Deming 《High Technology Letters》 EI CAS 2013年第3期290-294,共5页
To increase the limit of ethernet over coax (EoC) technology in the bidirectional reform of the hybrid fiber coaxial (HFC) network, an ethernet passive electronic network (EPEN) system based on Coax is proposed ... To increase the limit of ethernet over coax (EoC) technology in the bidirectional reform of the hybrid fiber coaxial (HFC) network, an ethernet passive electronic network (EPEN) system based on Coax is proposed and experimentally demonstrated in this paper. The proposed EPEN exploits the existing capabilities of the MAC layer in the ethernet passive optical network (EPON) for reduction of cost of the HFC network. As the MPCP (multi-point control protocol) is introduced in the EPEN, bandwidth control and higher efficiency can be achieved. The experimental results exhibit the throughput of system up to 100Mbps, which meet the requirements of HFC network. To improve the performance of EPEN, frequency division multiplexing (FDM) can be used for further increase of the throughput and more hardware processing modules in the future. can be implemented to enhance the capacity 展开更多
关键词 ethernet over coax EoC ethernet passive electronic network EPEN) ethernetpassive optical network (epon multi-point control protocol (MPCP)
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基于EPON通信网络的10kV线路差动保护技术研究
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作者 陆广辉 《通信电源技术》 2024年第11期41-43,共3页
以太网被动光网络(Ethernet Passive Optical Network,EPON)技术由于其高带宽、低延迟的特性,成为一种适合电力系统通信的技术平台。文章详细探讨基于EPON通信网络的10 kV线路差动保护技术的设计与实现,从EPON网络架构的搭建、网络参数... 以太网被动光网络(Ethernet Passive Optical Network,EPON)技术由于其高带宽、低延迟的特性,成为一种适合电力系统通信的技术平台。文章详细探讨基于EPON通信网络的10 kV线路差动保护技术的设计与实现,从EPON网络架构的搭建、网络参数的优化配置,到仿真模型的建立和实验验证。文章还包括差动保护策略的设计、系统现场试验与数据分析,以全面评估该技术在实际应用中的表现和效益。 展开更多
关键词 以太网被动光网络(epon)通信网络 10KV线路 差动保护技术
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Dynamic Wavelength and Bandwidth Allocation Using Adaptive Linear Prediction in WDM/TDM Ethernet Passive Optical Networks 被引量:1
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作者 陆奕奕 郭勇 何晨 《Journal of Shanghai Jiaotong university(Science)》 EI 2009年第2期173-178,共6页
Hybrid wavelength-division-multiplexing(WDM)/time-division-multiplexing(TDM) ethernet passive optical networks(EPONs) can achieve low per-subscriber cost and scalability to increase the number of subscribers. This pap... Hybrid wavelength-division-multiplexing(WDM)/time-division-multiplexing(TDM) ethernet passive optical networks(EPONs) can achieve low per-subscriber cost and scalability to increase the number of subscribers. This paper discusses dynamic wavelength and bandwidth allocation(DWBA) algorithm in hybrid WDM/TDM EPONs.Based on the correlation structure of the variable bit rate(VBR) video traffic,we propose a quality-ofservice (QoS) supported DWBA using adaptive linear traffic prediction.Wavelength and timeslot are allocated dynamically by optical line terminal(OLT) to all optical network units(ONUs) based on the bandwidth requests and the guaranteed service level agreements(SLA) of all ONUs.Mean square error of the predicted average arriving rate of compound video traffic during waiting period is minimized through Wiener-Hopf equation.Simulation results show that the DWBA-adaptive-linear-prediction(DWBA-ALP) algorithm can significantly improve the QoS performances in terms of low delay and high bandwidth utilization. 展开更多
关键词 ethernet passive optical network (epon dynamic bandwidth allocation (DBA) dynamic wavelength and bandwidth allocation (DWBA) variable bit rate (VBR) adaptive linear prediction grouting
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Optical local area network emulations over Ethernet passive optical networks:A survey 被引量:1
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作者 PENG YunFeng KUANG YuJun LONG KePing 《Science in China(Series F)》 2008年第8期1000-1009,共10页
As a promising solution to efficiently achieving fiber to the home (FTTH), Ethernet passive optical network (EPON) is currently improved to provide intercommunication among customers, together with normal traffic ... As a promising solution to efficiently achieving fiber to the home (FTTH), Ethernet passive optical network (EPON) is currently improved to provide intercommunication among customers, together with normal traffic delivery, via optical local area network emulation. It is a new research direction and expected to enhance the normal EPON performances. The purpose of this article is to review the state-of -the-art solutions to emulating optical local area networks (OLANs) over EPON. We discuss the major problems involved, e.g., network architecture, control mechanisms, and other potential enhancements. We also outline areas for future researches. 展开更多
关键词 ethernet passive optical networks optical local area networks LAN emulation on epon broadband access networks
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Upstream Channel Utilization of CSMA/CD-Based Ethernet over Passive Optical Networks
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作者 Elaine Wong Chang-Joon Chae 《光学学报》 EI CAS CSCD 北大核心 2003年第S1期737-738,共2页
We demonstrate that an asynchronous CSMA/CD protocol with an optical loop-back star coupler can achieve high upstream channel utilizatbn in an Ethernet PON, readily supporting a large installed base of Ethernet 10Base... We demonstrate that an asynchronous CSMA/CD protocol with an optical loop-back star coupler can achieve high upstream channel utilizatbn in an Ethernet PON, readily supporting a large installed base of Ethernet 10BaseT and 100BaseT interfaces. 展开更多
关键词 CSMA on AS of Upstream Channel Utilization of CSMA/CD-Based ethernet over passive optical networks ONU OLT OVER CD
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矿区配电网自动化EPON通信的可靠性分析
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作者 赵元苏 曹福凯 郭蕊 《金属矿山》 CAS 北大核心 2023年第12期189-195,共7页
矿区配电网自动化运行对矿山企业安全生产至关重要。针对现有的矿区配电网自动化通信网络在可靠性设计和网络系统容灾能力等方面的不足,研究了网络链路冗余度对矿区配电网自动化网络可靠性的影响,并构建了基于以太无源光网络(Ethernet P... 矿区配电网自动化运行对矿山企业安全生产至关重要。针对现有的矿区配电网自动化通信网络在可靠性设计和网络系统容灾能力等方面的不足,研究了网络链路冗余度对矿区配电网自动化网络可靠性的影响,并构建了基于以太无源光网络(Ethernet Passive optical Network,EPON)的矿区配电网自动化网络可靠性模型。在此基础上,提出了基于树形、总线形和环形的矿区配电网自动化EPON网络冗余结构,并推导出相应的网络可靠性数学评估模型。基于MATLAB的算例计算结果表明:矿区配电网自动化中EPON通信网络的可靠性与灾害强度、网络覆盖半径及网络结构密切相关,灾害强度与网络覆盖半径越高,网络可靠性越低;采用冗余结构的EPON通信网络的可靠性优于无冗余网络,其中双总线形冗余结构的可靠性最高,双环形冗余结构的可靠性居中,而树形冗余结构的可靠性最低。研究成果可为矿区配电网自动化通信网络的可靠性评估提供理论依据。 展开更多
关键词 矿区配电网 以太网无源光网络 配电网自动化 通信可靠性
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Video Streaming on Content Delivery Network in Star-Ring Based EPON
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作者 Zen-Der Shyu I-Shyan Hwang Chun-Wei Feng 《通讯和计算机(中英文版)》 2014年第2期208-215,共8页
关键词 内容分发网络 epon 视频流 视频点播服务 以太无源光网络 服务质量 分组延迟 光线路终端
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EPON及工业以太网技术在配电通信网中的运用
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作者 张超 印轩铭 《通信电源技术》 2023年第22期200-202,共3页
配电通信网建设期间,经常会受到一些因素影响,导致配电通信网无法满足实际需求,不利于配电通信网的长期发展。为提升配电通信网的性能,逐渐将以太网无源光网络(Ethernet Passive Optical Network,EPON)和工业以太网技术应用到配电通信... 配电通信网建设期间,经常会受到一些因素影响,导致配电通信网无法满足实际需求,不利于配电通信网的长期发展。为提升配电通信网的性能,逐渐将以太网无源光网络(Ethernet Passive Optical Network,EPON)和工业以太网技术应用到配电通信网中。阐述了EPON及工业以太网技术在配电通信网中的运用,分析了配电通信网的现状,其次介绍了EPON及工业以太网技术的相关概述,通过案例的形式,探讨了EPON及工业以太网技术在配电通信网中的具体应用,分析两者获取的经济效益,希望可以为相关工作人员的研究工作,提供一定的参考。 展开更多
关键词 以太网无源光网络(epon) 工业以太网技术 配电通信网
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基于EPON技术的电力通信设计研究
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作者 胡凤英 康志栋 《通信电源技术》 2023年第22期191-193,共3页
为有效地提高电力系统运行性能,保证电力通信的可靠性和安全性,应用以太网无源光网络(Ethernet Passive Optical Network,EPON)技术,提出一套电力通信设计方案。介绍了EPON技术定义、协议架构,并分析了EPON关键技术。从EPON模型分析、E... 为有效地提高电力系统运行性能,保证电力通信的可靠性和安全性,应用以太网无源光网络(Ethernet Passive Optical Network,EPON)技术,提出一套电力通信设计方案。介绍了EPON技术定义、协议架构,并分析了EPON关键技术。从EPON模型分析、EPON组网设计、电力通信方案设计以及通信节点设计等多个方面入手,为EPON技术电力通信的设计提出具有建设性的建议。希望通过这次研究,为相关人员提供有效的借鉴和参考。 展开更多
关键词 以太网无源光网络(epon)技术 电力通信系统 配网方案
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基于EPON通信的智能配电网馈线差动保护 被引量:41
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作者 徐光福 张春合 +3 位作者 严伟 朱中华 余群兵 徐舒 《电力系统自动化》 EI CSCD 北大核心 2014年第2期91-96,共6页
智能配电网正朝着网格化、多电源的拓扑结构发展,传统配电网保护、馈线自动化(FA)已经越来越难以满足智能配电网自愈的要求。电流差动保护由于其优越的速动性、灵敏性和选择性而广泛地应用于输电线路,现有的方法是采用专用光纤通道或者... 智能配电网正朝着网格化、多电源的拓扑结构发展,传统配电网保护、馈线自动化(FA)已经越来越难以满足智能配电网自愈的要求。电流差动保护由于其优越的速动性、灵敏性和选择性而广泛地应用于输电线路,现有的方法是采用专用光纤通道或者基于同步数字系列/准同步数字系列(SDH/PDH)技术的复用通道来实现,但架设这些通信设备费用高且通信速率慢。文中提出并研制了一种适用于智能配电网的差动保护的装置,该装置基于以太无源光网络(EPON)来实现差动保护装置之间采样数据的传输,配以抗延时抖动及IEEE 1588同步算法,实现多端线路差动保护。测试表明,保护能够准确动作,满足精度和动作时间的要求。该装置已在某10 kV线路挂网运行。 展开更多
关键词 智能配电网 差动保护 以太无源光网络 延时抖动 IEEE 1588
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基于EPON的配电网自动化通信系统及其安全机制 被引量:69
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作者 孙中伟 马亚宁 +2 位作者 王一蓉 霍司天 徐光年 《电力系统自动化》 EI CSCD 北大核心 2010年第8期72-75,共4页
结合以太网无源光网络(EPON)的技术特点及配电网自动化对通信系统的要求,设计了一种基于EPON的配电网自动化通信系统;针对该系统存在的安全威胁,利用对称密码算法及询问—应答机制,同时遵循EPON系统多点控制协议(MPCP)子层基于询问的发... 结合以太网无源光网络(EPON)的技术特点及配电网自动化对通信系统的要求,设计了一种基于EPON的配电网自动化通信系统;针对该系统存在的安全威胁,利用对称密码算法及询问—应答机制,同时遵循EPON系统多点控制协议(MPCP)子层基于询问的发现过程,提出了满足系统认证和加密需求的安全通信方案,并给出了该方案的实现方法。 展开更多
关键词 配电网自动化 以太网无源光网络(epon) 安全机制
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基于EPON的电力自动化信息传送平台 被引量:19
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作者 殷志锋 周雅 张元敏 《电力系统保护与控制》 EI CSCD 北大核心 2014年第2期111-115,共5页
针对目前现有的电力自动化信息传送网络存在的问题和不足,简要介绍了EPON技术的原理和优势。结合电力系统"三集五大"体系建设对电力自动化信息网络的相关要求,提出了一种基于EPON技术的网络作为自动化信息传送平台。详细介绍... 针对目前现有的电力自动化信息传送网络存在的问题和不足,简要介绍了EPON技术的原理和优势。结合电力系统"三集五大"体系建设对电力自动化信息网络的相关要求,提出了一种基于EPON技术的网络作为自动化信息传送平台。详细介绍了平台的规划和设计方案,对平台的实际效果进行了分析,满足电力自动化信息对速度、质量和可靠性的要求,可以作为供电系统自动化信息传送网络建设的模式推广应用。 展开更多
关键词 epon 自动化 电力通信 无源光网络 调度主站
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自适应门限的EPON动态带宽分配实现 被引量:7
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作者 汪学舜 余少华 +1 位作者 罗婷 戴锦友 《软件学报》 EI CSCD 北大核心 2012年第3期724-734,共11页
EPON(Ethernet passive optical network)是解决宽带接入中瓶颈问题的关键技术.为了实现EPON中共享上行带宽的公平和有效分配,以及不同分类业务的QoS保证,提出了基于门限的动态带宽分配算法.该算法根据ONU(optical network unit)的带宽... EPON(Ethernet passive optical network)是解决宽带接入中瓶颈问题的关键技术.为了实现EPON中共享上行带宽的公平和有效分配,以及不同分类业务的QoS保证,提出了基于门限的动态带宽分配算法.该算法根据ONU(optical network unit)的带宽请求和门限值授权分配带宽,实现了3种基于反馈控制理论的自适应调整门限方法并分析了其优缺点.模拟实验结果表明,与其他算法相比,该算法能够减少平均包时延,提高网络吞吐量. 展开更多
关键词 以太无源光网络 动态带宽分配 光网络单元 光线路终端 门限
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应用于对等速率10G-EPON的10Gbit/s突发模式激光驱动器设计 被引量:6
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作者 林叶 王健 +2 位作者 朱恩 顾皋蔚 刘文松 《东南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2011年第5期911-916,共6页
针对IEEE 802.3av标准所定义的对等速率万兆以太无源光网络(10G-EPON)ONU相关应用,设计了一种10 Gbit/s突发模式激光驱动器芯片,并对调制电路和偏置电路的设计进行了改进,以实现较短的突发开启/关断转换时间.本设计采用低成本的0.18μm ... 针对IEEE 802.3av标准所定义的对等速率万兆以太无源光网络(10G-EPON)ONU相关应用,设计了一种10 Gbit/s突发模式激光驱动器芯片,并对调制电路和偏置电路的设计进行了改进,以实现较短的突发开启/关断转换时间.本设计采用低成本的0.18μm CMOS工艺进行流片,整个芯片面积为575μm×675μm.测试表明:该芯片可工作在10.312 5 Gbit/s的速率上;当电源电压为1.8 V时,可对50Ω负载提供高达36 mA的调制电流.突发开启/关断转换时间均小于0.2 ns,远低于IEEE 802.3av标准所规定的上限.该突发模式激光驱动器的输出满足10G-EPON时序参数的规定,适用于10G-EPON ONU相关应用. 展开更多
关键词 万兆以太无源光网络(10G-epon) 激光驱动器 突发模式 IEEE802.3av CMOS
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