网络时间同步协议综述
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摘要
时间同步技术广泛应用于工业自动化、精密测量与控制、军队指挥信息化系统等领域。IEEE 1588精密时间协议提供亚微秒级的网络时间同步,能够满足工业领域的高精度测量和控制需求。White Rabbit时间同步技术(WR)是基于同步以太网、IEEE 1588v2协议和全数字双混频鉴相器技术(DDMTD)的一种分布式时间同步方案,能够提供亚纳秒级的同步精度。SAE AS6802协议是一种高精度、可容错、具有开发潜力的时钟同步协议,可为时间触发以太网(Time-Triggered Ethernet,TTE)提供所需精度的全局同步时钟。回顾了这三种时间同步技术的研究发展状况,并分析了其优缺点,展望了未来网络时间同步技术可能面临的挑战和发展趋势。
Time synchronization technology is widely used in industrial automation, precision measurement and control,and military command information system. The IEEE 1588 precision time protocol provides sub-microsecond network time synchronization to meet the high precision measurement and control needs of the industry. White Rabbit(WR)time synchronization is a distributed time synchronization solution based on synchronous ethernet, IEEE 1588v2 protocol and all Digital Dual Mixer Time Difference(DDMTD), which provides sub-nanosecond synchronization accuracy. The SAE AS6802 protocol is a high-precision, fault-tolerant, development-ready clock synchronization protocol that provides Time-Triggered Ethernet(TTE)with a globally synchronized clock of the required accuracy and a wide range of distributed determinism. This article reviews the research and development of these three time synchronization technologies, analyzes the advantages and disadvantages of the three technologies, and looks forward to the future development trend of network time synchronization technology.
Time synchronization technology is widely used in industrial automation, precision measurement and control,and military command information system. The IEEE 1588 precision time protocol provides sub-microsecond network time synchronization to meet the high precision measurement and control needs of the industry. White Rabbit(WR)time synchronization is a distributed time synchronization solution based on synchronous ethernet, IEEE 1588v2 protocol and all Digital Dual Mixer Time Difference(DDMTD), which provides sub-nanosecond synchronization accuracy. The SAE AS6802 protocol is a high-precision, fault-tolerant, development-ready clock synchronization protocol that provides Time-Triggered Ethernet(TTE)with a globally synchronized clock of the required accuracy and a wide range of distributed determinism. This article reviews the research and development of these three time synchronization technologies, analyzes the advantages and disadvantages of the three technologies, and looks forward to the future development trend of network time synchronization technology.
引文
[1]青岛东合信息技术有限公司.无线传感器网络技术原理及应用[M].西安:西安电子科技大学出版社,2013.
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[4] Guo H,Crossley P.Design of a time synchronization system based on GPS and IEEE 1588 for transmission substations[J].IEEE Transactions on Power Delivery,2017,32(4):2091-2100.
[5] Gong G H,Li Hongming.High-precision time distribution based on optical ethernet[J].Navigation Positioning&Timing,2017,4(6).
[6] IEEE 1588 clock synchronization protocol[EB/OL].http://IEEE 1588.nist.gov.
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[9] Wang K,Hu Yonghui,He Zaimin.Study and implementation of hardware-assisted IEEE 1588 based on DP83640[J].Journal of Time&Frequency,2011,34(1):1-8.
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[14]宋升金,许永辉,姜守达.基于PTPd改进的高精密时钟同步实现[J].计算机工程与应用,2013,49(2):72-76.
[15]关松青.工业以太网中IEEE 1588时钟同步技术研究[D].长沙:湖南大学,2010.
[16]赵上林,胡敏强,窦晓波,等.基于IEEE 1588的数字化变电站时钟同步技术研究[J].电网技术,2008,32(21):97-102.
[17]周末.基于IEEE 1588v2电力系统时间同步的研究与设计[D].济南:山东大学,2014.
[18]潘维斌,龚光华,杜强,等.White Rabbit技术及其在科学实验中的应用[R].中国核科学技术进展报告,2013.
[19] Lipinski M,Wlostowski T,Serrano J,et al.White rabbit:a PTP application for robust sub-nanosecond synchronization[C]//International IEEE Symposium on Precision Clock Synchronization for Measurement Control and Communication,2011:25-30.
[20] Moreira P,Serrano J,Wlostowski T,et al.White rabbit:sub-nanosecond timing distribution over ethernet[C]//International Symposium on Precision Clock Synchronization for Measurement,Control and Communication,2009:1-5.
[21]李成.大型物理实验装置高精度时间同步技术研究[D].合肥:中国科学技术大学,2012.
[22] Du Q,Gong G,Pan W.A packet-based precise timing and synchronous DAQ network for the LHAASO project[J].Nuclear Instruments&Methods in Physics Research Section A Accelerators Spectrometers Detectors&Associated Equipment,2013,732(5):488-492.
[23] Porelli A,Bogorodskii D,Brückner M,et al.Timing calibration and directional reconstruction for Tunka-HiSCORE[J].Journal of Physics,2015,632:012041.
[24] Musico P.The central logic board for the KM3NeT detector:design and production[J].Nuclear Instruments&Methods in Physics Research,2016,824:322-323.
[25] Aharonian F,Akhperjanian A G,Bazerbachi A R,et al.Detection of extended very-high-energy gamma-ray emission towards the young stellar cluster Westerlund 2[J].Astronomy&Astrophysics,2007,467(3):1075-1080.
[26] Ramos F,Gutiérrez-Rivas J L,López-Jiménez J,et al.Accurate timing networks for dependable smart grid applications[J].IEEE Transactions on Industrial Informatics,2017,PP(99):1.
[27] Shang L,Song K,Cao P,et al.A prototype clock system for LHAASO WCDA[J].IEEE Transactions on Nuclear Science,2013,60(5):3537-3543.
[28] Wang B,Yuan X.Using single wavelength light to improve the synchronization accuracy of the White Rabbit system[J].Chinese Optics Letters,2017,15(10):61-65.
[29] Dierikx E F,Wallin A E,Fordell T,et al.White Rabbit precision time protocol on long-distance fiber links[J].IEEE Transactions on Ultrasonics Ferroelectrics&Frequency Control,2016,63(7):945-952.
[30] Li H,Gong G,Pan W,et al.Temperature effect on White Rabbit timing link[J].IEEE Transactions on Nuclearence,2015,62(3):1021-1026.
[31]兰杰,朱晓飞,陈亚,等.时间触发以太网标准研究[J].航空标准化与质量,2013(5).
[32]罗勇.时间触发以太网关键技术的研究[D].成都:电子科技大学,2014.
[33] Time-triggered ethernet:SAE AS6802[S].SAE Aerospace Standard,2011-11.
[34] Steinbach T,Lim H,Korf F,et al.Tomorrow’s in-car interconnect? A competitive evaluation of IEEE 802.1AVB and time-triggered ethernet(AS6802)[C]//2012IEEE Vehicular Technology Conference(VTC Fall),Quebec City,2012:1-5.
[35] Herpel F C,Jürgen H.Towards an adaptive network centric distributed time-and space partitioned platform architecture[C]//Adaptive Hardware&Systems,2014.
[36]许聪,张磊,凌震.TTE在运载火箭控制系统中的应用[J].航天控制,2017(1):86-91.
[2]孙中尉.IEEE 1588高精度网络时间同步应用研究[D].北京:中国科学院研究生院(国家授时中心),2010.
[3]周剑虹,朱永丽,张军.浅谈时间同步技术在通信网中的应用[J].电信快报,2009(3):3-5.
[4] Guo H,Crossley P.Design of a time synchronization system based on GPS and IEEE 1588 for transmission substations[J].IEEE Transactions on Power Delivery,2017,32(4):2091-2100.
[5] Gong G H,Li Hongming.High-precision time distribution based on optical ethernet[J].Navigation Positioning&Timing,2017,4(6).
[6] IEEE 1588 clock synchronization protocol[EB/OL].http://IEEE 1588.nist.gov.
[7] Precision clock-synchronization protocol for networked measurement and control systems:EC 61588 Ed.1[S].2004-09.
[8]叶卫东,张润东.IEEE 1588精密时钟同步协议2.0版本浅析[J].测控技术,2010,29(2):1-4.
[9] Wang K,Hu Yonghui,He Zaimin.Study and implementation of hardware-assisted IEEE 1588 based on DP83640[J].Journal of Time&Frequency,2011,34(1):1-8.
[10] Arasan Chip Systems Inc.Fast ethernet 1588[EB/OL].[2010-05-30].http://arasan.com/products/wireline-interface/ethernet/fast-ethernet-ieee-1588/.
[11] More Than IP,Altera International Limited.1588 tri-speed ethernet MAC core product brief[EB/OL].[2006-12-30].http://www.altera.com/products/ip/ampp/morethanip/documents/m-mtip-tri_mode_l588_mac_pb_v1.0.pdf.
[12]遇彬.基于FPGA的精确时钟同步方法研究[D].杭州:浙江大学,2007.
[13] Hirschmann,precision clock synchronization-the standard IEEE 1588[EB/OL].(2018)http://www.beldensolutions.com/en/Service/download_center/index.phtml.
[14]宋升金,许永辉,姜守达.基于PTPd改进的高精密时钟同步实现[J].计算机工程与应用,2013,49(2):72-76.
[15]关松青.工业以太网中IEEE 1588时钟同步技术研究[D].长沙:湖南大学,2010.
[16]赵上林,胡敏强,窦晓波,等.基于IEEE 1588的数字化变电站时钟同步技术研究[J].电网技术,2008,32(21):97-102.
[17]周末.基于IEEE 1588v2电力系统时间同步的研究与设计[D].济南:山东大学,2014.
[18]潘维斌,龚光华,杜强,等.White Rabbit技术及其在科学实验中的应用[R].中国核科学技术进展报告,2013.
[19] Lipinski M,Wlostowski T,Serrano J,et al.White rabbit:a PTP application for robust sub-nanosecond synchronization[C]//International IEEE Symposium on Precision Clock Synchronization for Measurement Control and Communication,2011:25-30.
[20] Moreira P,Serrano J,Wlostowski T,et al.White rabbit:sub-nanosecond timing distribution over ethernet[C]//International Symposium on Precision Clock Synchronization for Measurement,Control and Communication,2009:1-5.
[21]李成.大型物理实验装置高精度时间同步技术研究[D].合肥:中国科学技术大学,2012.
[22] Du Q,Gong G,Pan W.A packet-based precise timing and synchronous DAQ network for the LHAASO project[J].Nuclear Instruments&Methods in Physics Research Section A Accelerators Spectrometers Detectors&Associated Equipment,2013,732(5):488-492.
[23] Porelli A,Bogorodskii D,Brückner M,et al.Timing calibration and directional reconstruction for Tunka-HiSCORE[J].Journal of Physics,2015,632:012041.
[24] Musico P.The central logic board for the KM3NeT detector:design and production[J].Nuclear Instruments&Methods in Physics Research,2016,824:322-323.
[25] Aharonian F,Akhperjanian A G,Bazerbachi A R,et al.Detection of extended very-high-energy gamma-ray emission towards the young stellar cluster Westerlund 2[J].Astronomy&Astrophysics,2007,467(3):1075-1080.
[26] Ramos F,Gutiérrez-Rivas J L,López-Jiménez J,et al.Accurate timing networks for dependable smart grid applications[J].IEEE Transactions on Industrial Informatics,2017,PP(99):1.
[27] Shang L,Song K,Cao P,et al.A prototype clock system for LHAASO WCDA[J].IEEE Transactions on Nuclear Science,2013,60(5):3537-3543.
[28] Wang B,Yuan X.Using single wavelength light to improve the synchronization accuracy of the White Rabbit system[J].Chinese Optics Letters,2017,15(10):61-65.
[29] Dierikx E F,Wallin A E,Fordell T,et al.White Rabbit precision time protocol on long-distance fiber links[J].IEEE Transactions on Ultrasonics Ferroelectrics&Frequency Control,2016,63(7):945-952.
[30] Li H,Gong G,Pan W,et al.Temperature effect on White Rabbit timing link[J].IEEE Transactions on Nuclearence,2015,62(3):1021-1026.
[31]兰杰,朱晓飞,陈亚,等.时间触发以太网标准研究[J].航空标准化与质量,2013(5).
[32]罗勇.时间触发以太网关键技术的研究[D].成都:电子科技大学,2014.
[33] Time-triggered ethernet:SAE AS6802[S].SAE Aerospace Standard,2011-11.
[34] Steinbach T,Lim H,Korf F,et al.Tomorrow’s in-car interconnect? A competitive evaluation of IEEE 802.1AVB and time-triggered ethernet(AS6802)[C]//2012IEEE Vehicular Technology Conference(VTC Fall),Quebec City,2012:1-5.
[35] Herpel F C,Jürgen H.Towards an adaptive network centric distributed time-and space partitioned platform architecture[C]//Adaptive Hardware&Systems,2014.
[36]许聪,张磊,凌震.TTE在运载火箭控制系统中的应用[J].航天控制,2017(1):86-91.
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