无线接入网络中网络功能虚拟化研究综述
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摘要
网络功能虚拟化(NFV)技术是近年兴起的网络技术,通过将具有特定网络功能的软件搭载在通用硬件服务器上,实现软件与硬件解耦。将网络功能虚拟化技术应用到无线接入网络中,将其部分网络功能虚拟化,可以有效地降低网络运营成本和硬件设备制造成本,提高网络部署的灵活性,满足移动用户的质量体验(Qo E)需求。为了深入了解NFV在无线接入网络中的发展现状与趋势,从3个角度对现有研究进行综述,包括无线接入网络中网络功能虚拟化的相关标准研究现状、无线网络功能虚拟化技术的体系架构以及无线接入网络中网络虚拟化资源分配的问题,并提出了网络功能虚拟化在无线网络中应用存在的挑战。
Network function virtualization(NFV) is a kind of new network technology rising in recent years. It realizes the decoupling of software and hardware by running the software which has specific function on a general-purpose hardware server. Applying the NFV to the radio access network could virtualize some of the radio access functions. It can reduce the operating costs and capital costs efficiently, and improve the flexibility of the network deployment. It also can satisfy the quality of experience of mobile users. In order to review the work that contribute to the current situation of NFV in radio access network, three perspectives were reviewed, including research on the related standards of network functional virtualization in RAN, network architecture of network function virtualization, and the resource allocation of network function deployment. Finally, the challenges of network function virtualization applying in wireless network were proposed.
Network function virtualization(NFV) is a kind of new network technology rising in recent years. It realizes the decoupling of software and hardware by running the software which has specific function on a general-purpose hardware server. Applying the NFV to the radio access network could virtualize some of the radio access functions. It can reduce the operating costs and capital costs efficiently, and improve the flexibility of the network deployment. It also can satisfy the quality of experience of mobile users. In order to review the work that contribute to the current situation of NFV in radio access network, three perspectives were reviewed, including research on the related standards of network functional virtualization in RAN, network architecture of network function virtualization, and the resource allocation of network function deployment. Finally, the challenges of network function virtualization applying in wireless network were proposed.
引文
[1]HAYES B.Cloud computing[J].Communications of the ACM,2008,51(7):9-11.
[2]BONOMI F,MILITO R,ZHU J,et al.Fog computing and its role in the internet of things[C]//Edition of the Mcc Workshop on Mobile Cloud Computing,August 17,2012,Helsinki,Finland.New York:ACM Press,2012:13-16.
[3]GUBBI J,BUYYA R,MARUSIC S,et al.Internet of things(Io T):a vision,architectural elements,and future directions[J].Future Generation Computer Systems,2012,29(7):1645-1660.
[4]林闯,田源,姚敏.绿色网络和绿色评价:节能机制、模型和评价[J].计算机学报,2011,34(4):593-612.LIN C,TIAN Y,YAO M.Green network and green evaluation:mechanism,modeling and evaluation[J].Chinese Journal of Computers,2011,34(4):593-612.
[5]ETSI.Network functions virtualisation(NFV);management and orchestration:GS NFV-MAN 001 V1.1.1[S].2014.
[6]ETSI.Network functions virtualisation(NFV);use cases:GRNFV 001 V1.2.1[S].2017.
[7]ONF.Software-defined networking:the new norm for networks[S].2012.
[8]HAWILO H,SHAMI A,MIRAHMADI M,et al.NFV:state of the art,challenges,and implementation in next generation mobile networks(vEPC)[J].IEEE Network,2014,28(6):18-26.
[9]HERRERA J G,BOTERO J F.Resource allocation in NFV:a comprehensive survey[M].Piscataway:IEEE Press,2016.
[10]BHAMARE D,JAIN R,SAMAKA M,et al.A survey on service function chaining[J].Journal of Network&Computer Applications,2016,75(C):138-155.
[11]XIE Y,LIU Z,WANG S,et al.Service function chaining resource allocation:a survey[J].CoRR,abs/1608.00095,2016.
[12]KATSALIS K,NIKAEIN N,EDMONDS A.Multi-domain orchestration for NFV:challenges and research directions[C]//International Conference on Ubiquitous Computing and Communications and 2016 International Symposium on Cyberspace and Security,Dec 14-16,2016,Granada,Spain.Piscataway:IEEE Press,2016:189-195.
[13]NGUYEN V G,BRUNSTROM A,GRINNEMO K J,et al.SDN/NFV-based mobile packet core network architectures:a survey[J].IEEE Communications Surveys&Tutorials,2017,PP(99):1.
[14]周伟林,杨芫,徐明伟.网络功能虚拟化技术研究综述[J].计算机研究与发展,2018,55(4):675-688.ZHOU W L,YANG Y,XU M W.Network function virtualization technology research[J].Journal of Computer Research and Development,2018,55(4):675-688.
[15]邵维专,吕光宏.网络功能虚拟化资源配置及优化研究综述[J].计算机应用研究,2018(2):321-326.SHAO W Z,LV G H.Survey on NFV resource allocation and optimization[J].Application Research of Computers,2018(2):321-326.
[16]赵巍,李勇.基于SDN/NFV的移动核心网关键技术研究[J].自动化与仪器仪表,2017(4):1-3.ZHAO W,LI Y.Based on SDN/NFV key techniques of mobile core network[J].Automation&Instrumentation,2017(4):1-3.
[17]MIJUMBI R,SERRAT J,GORRICHO J L,et al.Server placement and assignment in virtualized radio access networks[C]//International Conference on Network and Service Management,Nov 9-13,2015,Barcelona,Spain.Piscataway:IEEE Press,2015:398-401.
[18]RODRIGUEZ V Q,GUILLEMIN F.VNF modeling towards the cloud-RAN implementation[C]//International Conference on Networked Systems,Nov 9-13,2015,Barcelona,Spain.Piscataway:IEEE Press,2015.
[19]ABDELWAHAB S,HAMDAOUI B,ZNATI T,et al.Network function virtualization in 5G[J].IEEE Communications Magazine,2016,54(4):84-91.
[20]张恒升.基于NFV和SDN的无线网络虚拟化关键技术研究[J].现代导航,2017(3):224-228.ZHANG H S.Research on key wireless virtualization technology based on NFV and SDN[J].Modern Navigation,2017(3):224-228.
[21]张科,李冬.移动基站虚拟化标准用例研究[J].电信工程技术与标准化,2016,29(6):33-38.ZHANG K,LI D.Research on the virtualization of mobile base station[J].Telecom Engineering Technics and Standardization,2016,29(6):33-38.
[22]ETSI.Network functions virtualisation(NFV)release 3;management and orchestration;report on management of NFV-MANO and automated deployment of EM and other OSSfunctions:GR NFV-IFA 021[S].2018.
[23]ETSI.Network functions virtualisation(NFV);virtual network functions architecture:GS NFV-SWA 001[S].2014.
[24]IETF.Problem statement for service function chaining:RFC7498[S].2015.
[25]ORDONEZ-LUCENA J,AMEIGEIRAS P,LOPEZ D,et al.Network slicing for 5G with SDN/NFV:concepts,architectures,and challenges[J].IEEE Communications Magazine,2017,55(5):80-87.
[26]NGMN.5G white paper[R].2015.
[27]MARIIA S,SVITLANA S.Service deployment aspects in the systems with network function virtualization[C]//Radio Electronics&Info Communications,Sept 11-16,2016,Kiev,Ukraine.Piscataway:IEEE Press,2016:1-7.
[28]TALEB T,BAGAA M,KSENTINI A.User mobility-aware virtual network function placement for virtual 5G network infrastructure[C]//IEEE International Conference on Communications,June 8-12,2015,London,UK.Piscataway:IEEE Press,2015:3879-3884.
[29]LIU J,JIANG Z,KATO N,et al.Reliability evaluation for NFVdeployment of future mobile broadband networks[J].IEEEWireless Communications,2016,23(3):90-96.
[30]WEN T,YU H,SUN G,et al.Network function consolidation in service function chaining orchestration[C]//IEEE International Conference on Communications,May 22-27,2016,Kuala Lumpur,Malaysia.Piscataway:IEEE Press,2016:1-6.
[31]刘鎏,虞红芳.基于资源拆分的虚拟网络功能服务链映射算法[J].计算机应用研究,2016,33(8):2440-2445.LIU L,YU H F.Virtual network function service chain mapping based on resource splitting algorithm[J].Application Research of Computers,2016,33(8):2440-2445.
[32]唐宏,罗雨佳.NFV业务链资源分配技术[J].电信科学,2015,31(11):143-148.TANG H,LUO Y J.NFV service chain resource allocation technology[J].Telecommunications Science,2015,31(11):143-148.
[33]徐雷.网络功能虚拟化技术与应用[M].北京:人民邮电出版社,2016.XU L.Technology and application of network function virtualization[M].Beijing:Posts&Telecom Press,2016.
[34]ETSI.Mobile edge computing(MEC);deployment of mobile edge computing in an NFV environment:GR MEC 017[S].2018.
[35]ETSI.Reconfigurable radio systems(RRS);security requirements for reconfigurable radios:TS103 436[S].2018.
[36]ETSI.LTE;Telecommunication management;fault management(FM)for mobile networks that include virtualized network functions;procedures(14.0.0 Release 14):TS128 516 V14.0.0[S].2017.
[37]ETSI.LTE;telecommunication management;configuration management(CM)for mobile networks that include virtualized network functions;requirements version 14.1.0(Release 14):TS128 500 V14.1.0[S].2017.
[38]ETSI.LTE;telecommunication management;performance management(PM);performance measurements evolved packet core(EPC)network(3GPP TS32.426 version 14.1.0 Release14):TS132 426 V14.1.0[S].2017.
[39]IETF.Service function chaining use cases in fog RAN:draft-bernardos-sfc-fog-ran-03[S].2018.
[40]IETF.Service function chaining use cases in mobile networks:draft-ietf-sfc-use-case-mobility-07[S].2016.
[41]IETF.Service function chaining dataplane elements in mobile networks:draft-aranda-sfc-dp-mobile-04[S].2017.
[42]IEEE.Network reference model and functional description of IEEE 802 access network:802.1CF[S].2017.
[43]3GPP.Study on network management of virtualized networks:TR32.842[S].2015.
[44]DALLA-COSTA A G,BONDAN L,WICKBOLDT J A,et al.Maestro:an NFV orchestrator for wireless environments aware of VNF internal compositions[C]//IEEE International Conference on Advanced Information Networking and Applications.Mar27-29,2017,Taipei,China.Piscataway:IEEE Press,2017.
[45]RIGGIO R,BRADAI A,RASHEED T,et al.Virtual network functions orchestration in wireless networks[C]//International Conference on Network and Service Management,Nov 9-13,2015,Barcelona,Spain.Washington DC:IEEE Computer Society,2015:108-116.
[46]LI Y,ZHENG F,CHEN M,et al.A unified control and optimization framework for dynamical service chaining in software-defined NFV system[J].Wireless Communications IEEE,2015,22(6):15-23.
[47]BASTA A,HOFFMANN K,HOFFMANN K,et al.Applying NFV and SDN to LTE mobile core gateways,the functions placement problem[C]//The Workshop on All Things Cellular:Operations,Aug 17-22,2014,Chicago,IL,USA.New York:ACM Press,2014:33-38.
[48]JEMAA F B,PUJOLLE G,PARIENTE M.QoS-aware VNFplacement optimization in edge-central carrier cloud architecture[C]//Global Communications Conference,Dec 4-8,2016,Washington DC,USA.Piscataway:IEEE Press,2016:1-7.
[49]BAUMGARTNER A,REDDY V S,BAUSCHERT T.Mobile core network virtualization:A model for combined virtual core network function placement and topology optimization[C]//Network Softwarization,Apr 13-17,2015,London,UK.Piscataway:IEEE Press,2015:1-9.
[50]BAUMGARTNER A,REDDY V S,BAUSCHERT T.Combined virtual mobile core network function placement and topology optimization with latency bounds[C]//Fourth European Workshop on Software Defined Networks,Sep 30-Oct 2,2015,Bilbao,Spain.Piscataway:IEEE Press,2015:1-6.
[51]MARIIA S,SVITLANA S.Service deployment aspects in the systems with network function virtualization[C]//Radio Electronics&Info Communications,Sep 11-16,2016,Kiev,Ukraine.Piscataway:IEEE Press,2016:1-7.
[52]MIJUMBI R,JOAN S,JUAN-LUIS G,et al.Placement and assignment of servers in virtualized radio access networks[J].Computer Science,2015.
[53]RIGGIO R,BRADAI A,HARUTYUNYAN D,et al.Scheduling wireless virtual networks functions[J].IEEE Transactions on Network&Service Management,2016,13(2):240-252.
[54]张朝阳.无线网络虚拟化资源分配算法研究[D].重庆:重庆邮电大学,2017.ZHANG C Y.Research on resource allocation algorithm for wireless network virtualization[D].Chongqing:Chongqing University of Posts and Telecommunications,2017.
[55]AROUK O,TURLETTI T,NIKAEIN N.Multi-objective placement of virtual network function chains in 5G[C]//IEEEInternational Conference on Cloud Networking,Sep 25-27,2017,Prague,Czech Republic.Piscataway:IEEE Press,2017:1-6.
[56]HAN P,GUO L,LIU Y.Virtual network embedding in SDN/NFVbased fiber-wireless access network[C]//International Conference on Software Networking,May 23-26,2016,Jeju,South Korea.Piscataway:IEEE Press,2016:1-5.
[57]RIGGIO R,RASHEED T,NARAYANAN R.Virtual network functions orchestration in enterprise WLAN[C]//IFIP/IEEE International Symposium on Integrated Network Management(IM),May 11-15,2015,Ottawa,ON,Canada.Piscataway:IEEEPress,2015.
[58]LU G,LIU C,LI L,et al.A dynamic allocation algorithm for physical carrier resource in BBU pool of virtualized wireless network[C]//International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery,Sep 17-19,2015,Xi’an,China.Washington DC:IEEE Computer Society,2015:434-441.
[59]JEMAA F B,PARIENTE M,PARIENTE M.Analytical models for QoS-driven VNF placement and provisioning in wireless carrier cloud[C]//ACM International Conference on Modeling,Analysis and Simulation of Wireless and Mobile Systems,Nov13-17,2016,Malta.New York:ACM Press,2016:148-155.
[60]ETSI.Network function virtualization(NFV);use cases[S].2013.
[61]LIANG C,YU F R.Wireless network virtualization:a survey,some research issues and challenges[J].IEEE Communications Surveys&Tutorials,2015,17(1):358-380.
[62]ORDONEZ-LUCENA J,AMEIGEIRAS P,LOPEZ D,et al.Network slicing for 5G with SDN/NFV:concepts,architectures,and challenges[J].IEEE Communications Magazine,2017,55(5):80-87.
[63]王艳敏.接入网虚拟化以及虚拟资源管理算法的研究[D].南京:南京邮电大学,2017.WANG Y M.Research on access network virtualization and virtual resource management algorithm[D].Nanjing:Nanjing University of Posts and Telecommunications,2017.
[64]DUTTA S,TALEB T,KSENTINI A.QoE-aware elasticity support in cloud-native 5G systems[C]//IEEE International Conference on Communications,May 22-27,2016,Kuala Lumpur,Malaysia.Piscataway:IEEE Press,2016:1-6.
[65]LONG Q,ASSI C,SHABAN K.Delay-aware scheduling and resource optimization with network function virtualization[J].IEEE Transactions on Communications,2016,64(9):3746-3758.
[66]CARPIO F,DHAHRI S,JUKAN A.VNF placement with replication for load balancing in nfv networks[C]//IEEE International Conference on Communications(ICC),May 21-25,2017,Paris,France.Piscataway:IEEE Press,2017:1-6.
[67]MARIIA S,SVITLANA S.Service deployment aspects in the systems with network function virtualization[C]//Radio Electronics&Info Communications,Sep 11-16,2016,Kiev,Ukraine.Piscataway:IEEE Press,2016:1-7.
[68]CLAYMAN S,MAINI E,GALIS A,et al.The dynamic placement of virtual network functions[C]//Network Operations and Management Symposium,May 5-9,2014,Krakow,Poland.Piscataway:IEEE Press,2014:1-9.
[69]周桥,伊鹏,门浩崧.基于资源效用最大化的虚拟网络功能备份方法[J].计算机应用,2017,37(4):948-953.ZHOU Q,YI P,MEN H S.Virtual network function backup method based on resource utility maximization[J].Journal of Computer Applications,2017,37(4):948-953.
[70]赵慧玲,解云鹏,胡晓娟.网络功能虚拟化标准及技术探讨[J].中兴通讯技术,2015,21(4):45-50.ZHAO H L,XIE Y P,HU X J.Standard and technology of network function virtualization[J].ZTE Technology Journal,2015,21(4):45-50.
[71]黄睿,张红旗,常德显.网络功能虚拟化环境下安全服务链故障的备份恢复机制[J].计算机研究与发展,2018,55(4):768-781.HUANG R,ZHANG H Q,CHANG D X.A backup and recovery mechanism for security service chain fault in network function virtualization environment[J].Journal of Computer Research and Development,2018,55(4):768-781.
[72]韩青,兰巨龙,江逸茗.一种保证NFV可靠性的最优备份拓扑生成方法[J].计算机应用研究,2017,34(11):3384-3387.HAN Q,LAN J L,JIANG Y M.Optimal backup topology generation approach to guarantee reliability of NFV[J].Application Research of Computers,2017,34(11):3384-3387.
[73]苏坚,肖子玉.NFV中虚拟化网络功能生命周期安全管理措施[J].电信科学,2016,32(11):127-133.SU J,XIAO Z Y.VNF lifecycle security management measures in NFV[J].Telecommunications Science,2016,32(11):127-133.
[2]BONOMI F,MILITO R,ZHU J,et al.Fog computing and its role in the internet of things[C]//Edition of the Mcc Workshop on Mobile Cloud Computing,August 17,2012,Helsinki,Finland.New York:ACM Press,2012:13-16.
[3]GUBBI J,BUYYA R,MARUSIC S,et al.Internet of things(Io T):a vision,architectural elements,and future directions[J].Future Generation Computer Systems,2012,29(7):1645-1660.
[4]林闯,田源,姚敏.绿色网络和绿色评价:节能机制、模型和评价[J].计算机学报,2011,34(4):593-612.LIN C,TIAN Y,YAO M.Green network and green evaluation:mechanism,modeling and evaluation[J].Chinese Journal of Computers,2011,34(4):593-612.
[5]ETSI.Network functions virtualisation(NFV);management and orchestration:GS NFV-MAN 001 V1.1.1[S].2014.
[6]ETSI.Network functions virtualisation(NFV);use cases:GRNFV 001 V1.2.1[S].2017.
[7]ONF.Software-defined networking:the new norm for networks[S].2012.
[8]HAWILO H,SHAMI A,MIRAHMADI M,et al.NFV:state of the art,challenges,and implementation in next generation mobile networks(vEPC)[J].IEEE Network,2014,28(6):18-26.
[9]HERRERA J G,BOTERO J F.Resource allocation in NFV:a comprehensive survey[M].Piscataway:IEEE Press,2016.
[10]BHAMARE D,JAIN R,SAMAKA M,et al.A survey on service function chaining[J].Journal of Network&Computer Applications,2016,75(C):138-155.
[11]XIE Y,LIU Z,WANG S,et al.Service function chaining resource allocation:a survey[J].CoRR,abs/1608.00095,2016.
[12]KATSALIS K,NIKAEIN N,EDMONDS A.Multi-domain orchestration for NFV:challenges and research directions[C]//International Conference on Ubiquitous Computing and Communications and 2016 International Symposium on Cyberspace and Security,Dec 14-16,2016,Granada,Spain.Piscataway:IEEE Press,2016:189-195.
[13]NGUYEN V G,BRUNSTROM A,GRINNEMO K J,et al.SDN/NFV-based mobile packet core network architectures:a survey[J].IEEE Communications Surveys&Tutorials,2017,PP(99):1.
[14]周伟林,杨芫,徐明伟.网络功能虚拟化技术研究综述[J].计算机研究与发展,2018,55(4):675-688.ZHOU W L,YANG Y,XU M W.Network function virtualization technology research[J].Journal of Computer Research and Development,2018,55(4):675-688.
[15]邵维专,吕光宏.网络功能虚拟化资源配置及优化研究综述[J].计算机应用研究,2018(2):321-326.SHAO W Z,LV G H.Survey on NFV resource allocation and optimization[J].Application Research of Computers,2018(2):321-326.
[16]赵巍,李勇.基于SDN/NFV的移动核心网关键技术研究[J].自动化与仪器仪表,2017(4):1-3.ZHAO W,LI Y.Based on SDN/NFV key techniques of mobile core network[J].Automation&Instrumentation,2017(4):1-3.
[17]MIJUMBI R,SERRAT J,GORRICHO J L,et al.Server placement and assignment in virtualized radio access networks[C]//International Conference on Network and Service Management,Nov 9-13,2015,Barcelona,Spain.Piscataway:IEEE Press,2015:398-401.
[18]RODRIGUEZ V Q,GUILLEMIN F.VNF modeling towards the cloud-RAN implementation[C]//International Conference on Networked Systems,Nov 9-13,2015,Barcelona,Spain.Piscataway:IEEE Press,2015.
[19]ABDELWAHAB S,HAMDAOUI B,ZNATI T,et al.Network function virtualization in 5G[J].IEEE Communications Magazine,2016,54(4):84-91.
[20]张恒升.基于NFV和SDN的无线网络虚拟化关键技术研究[J].现代导航,2017(3):224-228.ZHANG H S.Research on key wireless virtualization technology based on NFV and SDN[J].Modern Navigation,2017(3):224-228.
[21]张科,李冬.移动基站虚拟化标准用例研究[J].电信工程技术与标准化,2016,29(6):33-38.ZHANG K,LI D.Research on the virtualization of mobile base station[J].Telecom Engineering Technics and Standardization,2016,29(6):33-38.
[22]ETSI.Network functions virtualisation(NFV)release 3;management and orchestration;report on management of NFV-MANO and automated deployment of EM and other OSSfunctions:GR NFV-IFA 021[S].2018.
[23]ETSI.Network functions virtualisation(NFV);virtual network functions architecture:GS NFV-SWA 001[S].2014.
[24]IETF.Problem statement for service function chaining:RFC7498[S].2015.
[25]ORDONEZ-LUCENA J,AMEIGEIRAS P,LOPEZ D,et al.Network slicing for 5G with SDN/NFV:concepts,architectures,and challenges[J].IEEE Communications Magazine,2017,55(5):80-87.
[26]NGMN.5G white paper[R].2015.
[27]MARIIA S,SVITLANA S.Service deployment aspects in the systems with network function virtualization[C]//Radio Electronics&Info Communications,Sept 11-16,2016,Kiev,Ukraine.Piscataway:IEEE Press,2016:1-7.
[28]TALEB T,BAGAA M,KSENTINI A.User mobility-aware virtual network function placement for virtual 5G network infrastructure[C]//IEEE International Conference on Communications,June 8-12,2015,London,UK.Piscataway:IEEE Press,2015:3879-3884.
[29]LIU J,JIANG Z,KATO N,et al.Reliability evaluation for NFVdeployment of future mobile broadband networks[J].IEEEWireless Communications,2016,23(3):90-96.
[30]WEN T,YU H,SUN G,et al.Network function consolidation in service function chaining orchestration[C]//IEEE International Conference on Communications,May 22-27,2016,Kuala Lumpur,Malaysia.Piscataway:IEEE Press,2016:1-6.
[31]刘鎏,虞红芳.基于资源拆分的虚拟网络功能服务链映射算法[J].计算机应用研究,2016,33(8):2440-2445.LIU L,YU H F.Virtual network function service chain mapping based on resource splitting algorithm[J].Application Research of Computers,2016,33(8):2440-2445.
[32]唐宏,罗雨佳.NFV业务链资源分配技术[J].电信科学,2015,31(11):143-148.TANG H,LUO Y J.NFV service chain resource allocation technology[J].Telecommunications Science,2015,31(11):143-148.
[33]徐雷.网络功能虚拟化技术与应用[M].北京:人民邮电出版社,2016.XU L.Technology and application of network function virtualization[M].Beijing:Posts&Telecom Press,2016.
[34]ETSI.Mobile edge computing(MEC);deployment of mobile edge computing in an NFV environment:GR MEC 017[S].2018.
[35]ETSI.Reconfigurable radio systems(RRS);security requirements for reconfigurable radios:TS103 436[S].2018.
[36]ETSI.LTE;Telecommunication management;fault management(FM)for mobile networks that include virtualized network functions;procedures(14.0.0 Release 14):TS128 516 V14.0.0[S].2017.
[37]ETSI.LTE;telecommunication management;configuration management(CM)for mobile networks that include virtualized network functions;requirements version 14.1.0(Release 14):TS128 500 V14.1.0[S].2017.
[38]ETSI.LTE;telecommunication management;performance management(PM);performance measurements evolved packet core(EPC)network(3GPP TS32.426 version 14.1.0 Release14):TS132 426 V14.1.0[S].2017.
[39]IETF.Service function chaining use cases in fog RAN:draft-bernardos-sfc-fog-ran-03[S].2018.
[40]IETF.Service function chaining use cases in mobile networks:draft-ietf-sfc-use-case-mobility-07[S].2016.
[41]IETF.Service function chaining dataplane elements in mobile networks:draft-aranda-sfc-dp-mobile-04[S].2017.
[42]IEEE.Network reference model and functional description of IEEE 802 access network:802.1CF[S].2017.
[43]3GPP.Study on network management of virtualized networks:TR32.842[S].2015.
[44]DALLA-COSTA A G,BONDAN L,WICKBOLDT J A,et al.Maestro:an NFV orchestrator for wireless environments aware of VNF internal compositions[C]//IEEE International Conference on Advanced Information Networking and Applications.Mar27-29,2017,Taipei,China.Piscataway:IEEE Press,2017.
[45]RIGGIO R,BRADAI A,RASHEED T,et al.Virtual network functions orchestration in wireless networks[C]//International Conference on Network and Service Management,Nov 9-13,2015,Barcelona,Spain.Washington DC:IEEE Computer Society,2015:108-116.
[46]LI Y,ZHENG F,CHEN M,et al.A unified control and optimization framework for dynamical service chaining in software-defined NFV system[J].Wireless Communications IEEE,2015,22(6):15-23.
[47]BASTA A,HOFFMANN K,HOFFMANN K,et al.Applying NFV and SDN to LTE mobile core gateways,the functions placement problem[C]//The Workshop on All Things Cellular:Operations,Aug 17-22,2014,Chicago,IL,USA.New York:ACM Press,2014:33-38.
[48]JEMAA F B,PUJOLLE G,PARIENTE M.QoS-aware VNFplacement optimization in edge-central carrier cloud architecture[C]//Global Communications Conference,Dec 4-8,2016,Washington DC,USA.Piscataway:IEEE Press,2016:1-7.
[49]BAUMGARTNER A,REDDY V S,BAUSCHERT T.Mobile core network virtualization:A model for combined virtual core network function placement and topology optimization[C]//Network Softwarization,Apr 13-17,2015,London,UK.Piscataway:IEEE Press,2015:1-9.
[50]BAUMGARTNER A,REDDY V S,BAUSCHERT T.Combined virtual mobile core network function placement and topology optimization with latency bounds[C]//Fourth European Workshop on Software Defined Networks,Sep 30-Oct 2,2015,Bilbao,Spain.Piscataway:IEEE Press,2015:1-6.
[51]MARIIA S,SVITLANA S.Service deployment aspects in the systems with network function virtualization[C]//Radio Electronics&Info Communications,Sep 11-16,2016,Kiev,Ukraine.Piscataway:IEEE Press,2016:1-7.
[52]MIJUMBI R,JOAN S,JUAN-LUIS G,et al.Placement and assignment of servers in virtualized radio access networks[J].Computer Science,2015.
[53]RIGGIO R,BRADAI A,HARUTYUNYAN D,et al.Scheduling wireless virtual networks functions[J].IEEE Transactions on Network&Service Management,2016,13(2):240-252.
[54]张朝阳.无线网络虚拟化资源分配算法研究[D].重庆:重庆邮电大学,2017.ZHANG C Y.Research on resource allocation algorithm for wireless network virtualization[D].Chongqing:Chongqing University of Posts and Telecommunications,2017.
[55]AROUK O,TURLETTI T,NIKAEIN N.Multi-objective placement of virtual network function chains in 5G[C]//IEEEInternational Conference on Cloud Networking,Sep 25-27,2017,Prague,Czech Republic.Piscataway:IEEE Press,2017:1-6.
[56]HAN P,GUO L,LIU Y.Virtual network embedding in SDN/NFVbased fiber-wireless access network[C]//International Conference on Software Networking,May 23-26,2016,Jeju,South Korea.Piscataway:IEEE Press,2016:1-5.
[57]RIGGIO R,RASHEED T,NARAYANAN R.Virtual network functions orchestration in enterprise WLAN[C]//IFIP/IEEE International Symposium on Integrated Network Management(IM),May 11-15,2015,Ottawa,ON,Canada.Piscataway:IEEEPress,2015.
[58]LU G,LIU C,LI L,et al.A dynamic allocation algorithm for physical carrier resource in BBU pool of virtualized wireless network[C]//International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery,Sep 17-19,2015,Xi’an,China.Washington DC:IEEE Computer Society,2015:434-441.
[59]JEMAA F B,PARIENTE M,PARIENTE M.Analytical models for QoS-driven VNF placement and provisioning in wireless carrier cloud[C]//ACM International Conference on Modeling,Analysis and Simulation of Wireless and Mobile Systems,Nov13-17,2016,Malta.New York:ACM Press,2016:148-155.
[60]ETSI.Network function virtualization(NFV);use cases[S].2013.
[61]LIANG C,YU F R.Wireless network virtualization:a survey,some research issues and challenges[J].IEEE Communications Surveys&Tutorials,2015,17(1):358-380.
[62]ORDONEZ-LUCENA J,AMEIGEIRAS P,LOPEZ D,et al.Network slicing for 5G with SDN/NFV:concepts,architectures,and challenges[J].IEEE Communications Magazine,2017,55(5):80-87.
[63]王艳敏.接入网虚拟化以及虚拟资源管理算法的研究[D].南京:南京邮电大学,2017.WANG Y M.Research on access network virtualization and virtual resource management algorithm[D].Nanjing:Nanjing University of Posts and Telecommunications,2017.
[64]DUTTA S,TALEB T,KSENTINI A.QoE-aware elasticity support in cloud-native 5G systems[C]//IEEE International Conference on Communications,May 22-27,2016,Kuala Lumpur,Malaysia.Piscataway:IEEE Press,2016:1-6.
[65]LONG Q,ASSI C,SHABAN K.Delay-aware scheduling and resource optimization with network function virtualization[J].IEEE Transactions on Communications,2016,64(9):3746-3758.
[66]CARPIO F,DHAHRI S,JUKAN A.VNF placement with replication for load balancing in nfv networks[C]//IEEE International Conference on Communications(ICC),May 21-25,2017,Paris,France.Piscataway:IEEE Press,2017:1-6.
[67]MARIIA S,SVITLANA S.Service deployment aspects in the systems with network function virtualization[C]//Radio Electronics&Info Communications,Sep 11-16,2016,Kiev,Ukraine.Piscataway:IEEE Press,2016:1-7.
[68]CLAYMAN S,MAINI E,GALIS A,et al.The dynamic placement of virtual network functions[C]//Network Operations and Management Symposium,May 5-9,2014,Krakow,Poland.Piscataway:IEEE Press,2014:1-9.
[69]周桥,伊鹏,门浩崧.基于资源效用最大化的虚拟网络功能备份方法[J].计算机应用,2017,37(4):948-953.ZHOU Q,YI P,MEN H S.Virtual network function backup method based on resource utility maximization[J].Journal of Computer Applications,2017,37(4):948-953.
[70]赵慧玲,解云鹏,胡晓娟.网络功能虚拟化标准及技术探讨[J].中兴通讯技术,2015,21(4):45-50.ZHAO H L,XIE Y P,HU X J.Standard and technology of network function virtualization[J].ZTE Technology Journal,2015,21(4):45-50.
[71]黄睿,张红旗,常德显.网络功能虚拟化环境下安全服务链故障的备份恢复机制[J].计算机研究与发展,2018,55(4):768-781.HUANG R,ZHANG H Q,CHANG D X.A backup and recovery mechanism for security service chain fault in network function virtualization environment[J].Journal of Computer Research and Development,2018,55(4):768-781.
[72]韩青,兰巨龙,江逸茗.一种保证NFV可靠性的最优备份拓扑生成方法[J].计算机应用研究,2017,34(11):3384-3387.HAN Q,LAN J L,JIANG Y M.Optimal backup topology generation approach to guarantee reliability of NFV[J].Application Research of Computers,2017,34(11):3384-3387.
[73]苏坚,肖子玉.NFV中虚拟化网络功能生命周期安全管理措施[J].电信科学,2016,32(11):127-133.SU J,XIAO Z Y.VNF lifecycle security management measures in NFV[J].Telecommunications Science,2016,32(11):127-133.