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战术认知无线电网络架构设计 被引量:4
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作者 潘乐炳 叶峻 曹满亮 《电讯技术》 北大核心 2017年第5期491-496,共6页
认知无线电技术具有智能电磁频谱感知、干扰避免和动态频谱接入的能力,因此利用认知无线电技术可以提升战术网络的性能。由于战术作战的复杂性,需要建立适用于战术任务的认知无线电架构。首先分析了战术通信的特点和认知无线电技术在战... 认知无线电技术具有智能电磁频谱感知、干扰避免和动态频谱接入的能力,因此利用认知无线电技术可以提升战术网络的性能。由于战术作战的复杂性,需要建立适用于战术任务的认知无线电架构。首先分析了战术通信的特点和认知无线电技术在战术网络中的运用,以及目前国外战术认知无线网络的建设情况。结合战术通信网络移动性高、电磁对抗复杂的特点,利用对抗环境下的战术网络结构和模型,提出了分层的战术认知无线电网络结构以及面向作战任务的网络管理方法,形成拓扑结构分层次、管理运行分阶段的网络架构。该网络架构均衡考虑了网络的灵活性和稳定性,适用于动态变化的战术网络,为认知无线电在战术通信中的技术应用和网络设计提供了参考。 展开更多
关键词 认知无线电 战术通信 网络模型 网络管理架构
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面向电网级的IP地址管理系统的设计与实现 被引量:2
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作者 马卓斌 金冰鑫 +3 位作者 李鑫 马文卓 田甜 尹文婷 《信息技术》 2022年第5期140-147,153,共9页
国家电网在电力系统稳定运行上具有重要作用,但由于内部网络设备激增,导致传统的IP地址管理难以满足高负荷运转。因此,文中研究了新的IP地址管理系统,减轻了网络规划和配置;解决了IP地址重利用、提高了网络的安全性。该系统基于B/S体系... 国家电网在电力系统稳定运行上具有重要作用,但由于内部网络设备激增,导致传统的IP地址管理难以满足高负荷运转。因此,文中研究了新的IP地址管理系统,减轻了网络规划和配置;解决了IP地址重利用、提高了网络的安全性。该系统基于B/S体系架构,使用ARP、SNMP、Docker等技术实现IP地址自动侦测、定期扫描和自动回收静默休眠的IP等功能。此外,摒弃不易扩展的静态软件结构,采用动态软件结构实现主要构件,有利于后期的升级和维护。系统测试表明,该系统能满足供电公司IP地址管理需求,提高了运营维护效率,实现了管理自动化。 展开更多
关键词 IP地址管理 网络管理动态软件体系架构 供电公司内网
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Self-Organization Approaches for Optimization in Cognitive Radio Networks 被引量:1
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作者 XU Xu CHAI Xiaomeng ZHANG Zhongshan 《China Communications》 SCIE CSCD 2014年第4期121-129,共9页
Cognitive radio(CR) is regarded as a promising technology for providing a high spectral efficiency to mobile users by using heterogeneous wireless network architectures and dynamic spectrum access techniques.However,c... Cognitive radio(CR) is regarded as a promising technology for providing a high spectral efficiency to mobile users by using heterogeneous wireless network architectures and dynamic spectrum access techniques.However,cognitive radio networks(CRNs)may also impose some challenges due to the ever increasing complexity of network architecture,the increasing complexity with configuration and management of large-scale networks,fluctuating nature of the available spectrum,diverse Quality-of-Service(QoS)requirements of various applications,and the intensifying difficulties of centralized control,etc.Spectrum management functions with self-organization features can be used to address these challenges and realize this new network paradigm.In this paper,fundamentals of CR,including spectrum sensing,spectrum management,spectrum mobility and spectrum sharing,have been surveyed,with their paradigms of self-organization being emphasized.Variant aspects of selforganization paradigms in CRNs,including critical functionalities of Media Access Control(MAC)- and network-layer operations,are surveyed and compared.Furthermore,new directions and open problems in CRNs are also identified in this survey. 展开更多
关键词 cognitive radio self-organized networking heterogeneous machine-to-machine DECENTRALIZED load balancing cooperation.
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Evaluation of Signaling Loads in NO Stack 5G Mobile Network
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作者 Xin Su Jie Zeng +2 位作者 Yuan Chen Changpeng Gu Liping Rong 《China Communications》 SCIE CSCD 2017年第7期57-66,共10页
Present mobile communication system suffers from the exponentially increased mobile traffic and research on the fifth generation(5G) mobile network architectures is ongoing to solve this problem. We investigate the fe... Present mobile communication system suffers from the exponentially increased mobile traffic and research on the fifth generation(5G) mobile network architectures is ongoing to solve this problem. We investigate the feasibility of the proposals used for the network architecture evolution from 4G to 5G and first propose a compatible network architecture, which decouples the management plane, the control plane and the user plane based on NO Stack framework proposed in our previous study. We mainly design detail procedures including UE attachment, service request and dedicated bearer activation/deactivation for our proposal network architecture. Finally, we establish a clear analytical mode of the application and system states to evaluate the signaling loads of new architecture. Simulation results show that our proposal network architecture with elaborated signaling procedures has much impact on the total signaling loads of system and could obviously decrease the signaling overhead compared with LTE. 展开更多
关键词 NO stack signaling load SDN 5G
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