Larger wireless access networks are required to meet the growing demand for mobile traffic and multimedia services. The use of RoF (Radio over Fiber) technology in combination with millimeter waves is a potential resp...Larger wireless access networks are required to meet the growing demand for mobile traffic and multimedia services. The use of RoF (Radio over Fiber) technology in combination with millimeter waves is a potential response to the requirements of broadband applications and high capacity networks. In this paper, we proposed a RoF architecture able to provide very high-speed wireless access points up to Gbps considering an indoor and outdoor environment conform to IEEE 802.11ad and IEEE 802.15.3c standard. Optical transmission and radio coverage have been studied by considering the uplink and downlink. System performance has been evaluated in the relation to the Error Vector Magnitude (EVM) for various modulation formats (BPSK, QPSK and 16QAM). Results showed that millimeter wave signals are successfully delivered over a 50 km fiber link and a wireless channel up to 32 m. Data throughput up to 5.28 Gbps has been reached. The proposed architecture can extend the range of applications for wireless communications in association with the unlicensed 60 GHz band with the advantages of better capacity, a wider coverage area and a reduction in the investment cost.展开更多
Open Air Interface(OAI)alliance recently introduced a new disaggregated Open Radio Access Networks(O-RAN)framework for next generation telecommunications and networks.This disaggregated architecture is open,automated,...Open Air Interface(OAI)alliance recently introduced a new disaggregated Open Radio Access Networks(O-RAN)framework for next generation telecommunications and networks.This disaggregated architecture is open,automated,software defined,virtual,and supports the latest advanced technologies like Artificial Intelligence(AI)Machine Learning(AI/ML).This novel intelligent architecture enables programmers to design and customize automated applications according to the business needs and to improve quality of service in fifth generation(5G)and Beyond 5G(B5G).Its disaggregated and multivendor nature gives the opportunity to new startups and small vendors to participate and provide cheap hardware software solutions to keep the market competitive.This paper presents the disaggregated and programmable O-RAN architecture focused on automation,AI/ML services,and applications with Flexible Radio access network Intelligent Controller(FRIC).We schematically demonstrate the reinforcement learning,external applications(xApps),and automation steps to implement this disaggregated O-RAN architecture.The idea of this research paper is to implement an AI/ML enabled automation system for software defined disaggregated O-RAN,which monitors,manages,and performs AI/ML-related services,including the model deployment,optimization,inference,and training.展开更多
探讨软件定义网络(Software Defined Network,SDN)技术在广播电视播控网络智能化改造中的应用。分析智能化改造的业务、技术和经济需求,指出传统网络架构在面临媒体形态多样化和观众需求个性化时的局限性。阐述SDN技术在网络架构优化、...探讨软件定义网络(Software Defined Network,SDN)技术在广播电视播控网络智能化改造中的应用。分析智能化改造的业务、技术和经济需求,指出传统网络架构在面临媒体形态多样化和观众需求个性化时的局限性。阐述SDN技术在网络架构优化、动态资源分配、流量工程优化、安全保障强化以及开放接口与生态系统构建等方面的应用策略。通过引入SDN技术,广播电视播控网络能够实现更高效、灵活和安全的运行,满足不断增长的业务需求,降低运营成本,推动行业的数字化转型和升级。展开更多
探讨互联网协议第6版(Internet Protocol version 6,IPv6)在广电工程中的应用及其技术优势。通过对IPv6与互联网协议第4版(Internet Protocol version 4,IPv4)的比较分析,揭示IPv6在地址空间、安全性、路由转发机制等方面的显著优势。阐...探讨互联网协议第6版(Internet Protocol version 6,IPv6)在广电工程中的应用及其技术优势。通过对IPv6与互联网协议第4版(Internet Protocol version 4,IPv4)的比较分析,揭示IPv6在地址空间、安全性、路由转发机制等方面的显著优势。阐述IPv6在广电网络中的传输技术,深入分析其在高清视频传输、互动电视业务和广电网络智能化改造等应用场景的具体作用,为广电工程领域的相关人员提供有价值的参考,推动IPv6在广电网络中的更广泛应用。展开更多
文摘Larger wireless access networks are required to meet the growing demand for mobile traffic and multimedia services. The use of RoF (Radio over Fiber) technology in combination with millimeter waves is a potential response to the requirements of broadband applications and high capacity networks. In this paper, we proposed a RoF architecture able to provide very high-speed wireless access points up to Gbps considering an indoor and outdoor environment conform to IEEE 802.11ad and IEEE 802.15.3c standard. Optical transmission and radio coverage have been studied by considering the uplink and downlink. System performance has been evaluated in the relation to the Error Vector Magnitude (EVM) for various modulation formats (BPSK, QPSK and 16QAM). Results showed that millimeter wave signals are successfully delivered over a 50 km fiber link and a wireless channel up to 32 m. Data throughput up to 5.28 Gbps has been reached. The proposed architecture can extend the range of applications for wireless communications in association with the unlicensed 60 GHz band with the advantages of better capacity, a wider coverage area and a reduction in the investment cost.
文摘Open Air Interface(OAI)alliance recently introduced a new disaggregated Open Radio Access Networks(O-RAN)framework for next generation telecommunications and networks.This disaggregated architecture is open,automated,software defined,virtual,and supports the latest advanced technologies like Artificial Intelligence(AI)Machine Learning(AI/ML).This novel intelligent architecture enables programmers to design and customize automated applications according to the business needs and to improve quality of service in fifth generation(5G)and Beyond 5G(B5G).Its disaggregated and multivendor nature gives the opportunity to new startups and small vendors to participate and provide cheap hardware software solutions to keep the market competitive.This paper presents the disaggregated and programmable O-RAN architecture focused on automation,AI/ML services,and applications with Flexible Radio access network Intelligent Controller(FRIC).We schematically demonstrate the reinforcement learning,external applications(xApps),and automation steps to implement this disaggregated O-RAN architecture.The idea of this research paper is to implement an AI/ML enabled automation system for software defined disaggregated O-RAN,which monitors,manages,and performs AI/ML-related services,including the model deployment,optimization,inference,and training.
文摘探讨软件定义网络(Software Defined Network,SDN)技术在广播电视播控网络智能化改造中的应用。分析智能化改造的业务、技术和经济需求,指出传统网络架构在面临媒体形态多样化和观众需求个性化时的局限性。阐述SDN技术在网络架构优化、动态资源分配、流量工程优化、安全保障强化以及开放接口与生态系统构建等方面的应用策略。通过引入SDN技术,广播电视播控网络能够实现更高效、灵活和安全的运行,满足不断增长的业务需求,降低运营成本,推动行业的数字化转型和升级。
文摘探讨互联网协议第6版(Internet Protocol version 6,IPv6)在广电工程中的应用及其技术优势。通过对IPv6与互联网协议第4版(Internet Protocol version 4,IPv4)的比较分析,揭示IPv6在地址空间、安全性、路由转发机制等方面的显著优势。阐述IPv6在广电网络中的传输技术,深入分析其在高清视频传输、互动电视业务和广电网络智能化改造等应用场景的具体作用,为广电工程领域的相关人员提供有价值的参考,推动IPv6在广电网络中的更广泛应用。
