The future of customer control

The state of the art in the various segments of the customer control network management business is surveyed, and projections of the future of each of these segments are presented. Among the anticipated developments discussed are the use of expert-system-based technologies to automate the alarm correlation function, convergence on five principal data network standards, the use of automated tools to reconfigure remote PBX installations, the correlation of physical and logical network management, and the emergence of new segments of the network management marketplace. Customer requirement and problems that are shaping future network management solutions are examined     

可信网络中基于预测控制的行为度量模型

In order to construct the trusted network and realize the trust of network behavior, a new multi-dimensional behavior measurement model based on prediction and control is presented. By using behavior predictive equation, individual similarity function, group similarity function, direct trust assessment function, and generalized predictive control, this model can guarantee the trust of an end user and users in its network. Compared with traditional measurement model, the model considers different characteristics of various networks. The trusted measurement policies established according to different network environments have better adaptability. By constructing trusted group, the threats to trusted group will be reduced greatly. Utilizing trusted group to restrict individuals in network can ensure the fault tolerance of trustworthiness of trusted individuals and group. The simulation shows that this scheme can support behavior measurement more efficiently than traditional ones and the model resists viruses and Trojans more efficiently than older ones.     

Electric power system state estimation

This paper discusses the state of the art in electric power system state estimation. Within energy management systems, state estimation is a key function for building a network real-time model. A real-time model is a quasi-static mathematical representation of the current conditions in an interconnected power network. This model is extracted at intervals from snapshots of real-time measurements (both analog and status). The new modeling needs associated with the introduction of new control devices and the changes induced by emerging energy markets are making state estimation and its related functions more important than ever     

微服务编排在网管支撑系统中的研究与应用

近年来,面向下一代通信网络,未来网管技术架构一直是OSS领域被关注的焦点课题之一。本文按照云原生、集中化、平台化、开源化的设计原则,提出了一套未来网管基础技术框架,设计并开发了微服务管控平台,统一作为上层网管应用的PaaS平台支撑层。同时通过微服务化改造和容器编排,在已建设的网管支撑系统中加以验证,实现了业务需求的敏捷快速支撑,取得了良好的应用效果。     

混沌背景中微弱信号检测的回声状态网络方法

对复杂非线性系统的相空间重构理论进行了研究分析,提出了混沌背景中微弱信号检测的回声状态网络方法。针对回声状态网络模型参数选取困难这一问题,采用遗传算法对其模型参数进行优化。将回声状态网络模型参数作为遗传算法的个体,混沌时间序列预测均方根误差的倒数作为适应度函数,通过选择、交叉、变异等操作获得适合数据特点的最优模型参数。根据回声状态网络强大的学习和非线性处理能力,利用得到的回声状态网络模型最优参数建立混沌背景噪声的单步预测模型,将淹没在混沌背景噪声中的微弱瞬态信号和周期信号从预测误差中检测出来。以Lorenz系统和实测的海杂波数据作为混沌背景噪声进行仿真实验,仿真结果表明,本文所提方法在预测精度和训练速度方面均优于支持向量机和神经网络模型,能够有效地检测出混沌背景噪声中的微弱目标信号,且具有较小的预测误差。      

A QoS-enabled resource management scheme for F-HMIPv6 micro mobility approach

In the near future, wireless networks will certainly run real-time applications with special Quality of Service (QoS) requirements. In this context micro mobility management schemes such as Fast Handovers over Hierarchical Mobile IPv6 (F-HMIPv6) will be a useful tool in reducing Mobile IPv6 (MIPv6) handover disruption and thereby to improve delay and losses. However, F-HMIPv6 alone does not support QoS requirements for real-time applications. Therefore, in order to accomplish this goal, a novel resource management scheme for the Differentiated Services (DiffServ) QoS model is proposed to be used as an add-on to F-HMIPv6. The new resource management scheme combines the F-HMIPv6 functionalities with the DiffServ QoS model and with network congestion control and dynamic reallocation mechanisms in order to accommodate different QoS traffic requirements. This new scheme based on a Measurement-Based Admission Control (MBAC) algorithm is effective, simple, scalable and avoids the well known traditional resource reservation issues such as state maintenance, signaling overhead and processing load. By means of the admission evaluation of new flows and handover flows, it is able to provide the desired QoS requirements for new flows while preserving the QoS of existing ones. The evaluated results show that all QoS metrics analyzed were significantly improved with the new architecture indicating that it is able to provide a highly predictive QoS support to F-HMIPv6.     

ASON控制平面和链路管理协议

随着网络容量的不断扩大,提高核心网络效率和动态分配网络带宽的需求越来越迫切。智能光网络是未来光网络的发展方向,控制平面是实现智能光网络的核心。自动交换光网络(ASON )引入了通用多协议标签交换( GMPLS )控制平面,其中链路管理协议是为管理流量工程链路(TE link)开发的新技术。文中介绍了 ASON 中 GMPLS 控制平面及其主要功能,在此基础上对其中链路管理协议的 4 种基本功能(控制信道管理、链路属性关联、链路连通性验证及故障管理)进行具体分析。     

Managing the network state evolution over time using CORBAenvironment

This paper proposes a CORBA-based framework for managing the network state evolution over time. This framework is based on the concept of CORBA temporal agents, capable of managing the past and current behavior of network resources. Managed objects use specific time attributes for representing how their values are evolving in time. Moreover, specially designed operations (services) enable users to exploit the temporal dimension of management information in order to understand the past, control the present, and thus even predict the future of managed objects. The management environment is designed in order to provide coexistence and interoperability with existing management platforms     

The NLAMR network analysis infrastructure

The National Laboratory for Applied Network Research is creating a network analysis infrastructure (NAI) to support network research and engineering of high performance research networks. The NAI includes a passive monitoring project, an active monitoring project, and the collection of network management and control data. Together these projects have deployed more than 120 monitors around the high-performance research networks in the United States. This article describes NAI and the projects using it. The article concludes with a discussion of the future plans for the infrastructure     

网管支撑系统运行质量管控的研究与实现

本文提出了一种通信网网管支撑系统质量管控体系,研究通过网管支撑系统运行质量指标的量化来实现网管支撑系统质量管控的方法,并对具体实现方法的技术进行了阐述,为网管支撑系统的质量管控形成良性的优化循环,以此来提高通信实体的维护、服务、管理水平。     

电信运营商NFV未来网络管理体系演进关键问题

网络功能虚拟化(NFV)是电信级业务云化的核心技术和架构,是未来网络演进的必然趋势.NFV给通信网络带来了新的能力,同时也要求对现有的设备运行、管理、维护和配置模型增加新的管理和编排(MANO)功能.首先对物理网元的网管体系架构及未来演进规划进行总结研究,然后对NFV的引入对现网设备管理方式的变化及新网管架构功能进行总结,深入研究NFV MANO与运营支撑系统(OSS)协同关系、MANO与其他周边网元组网方案等关键问题,最后从电信运营商角度,基于NFV MANO解耦程度,提出MANO部署及演进策略.     

Model predictive control of bidirectional isolated DC–DC converter for energy conversion system

Model predictive control (MPC) is a powerful and emerging control algorithm in the field of power converters and energy conversion systems. This paper proposes a model predictive algorithm to control the power flow between the high-voltage and low-voltage DC buses of a bidirectional isolated full-bridge DC–DC converter. The predictive control algorithm utilises the discrete nature of the power converters and predicts the future nature of the system, which are compared with the references to calculate the cost function. The switching state that minimises the cost function is selected for firing the converter in the next sampling time period. The proposed MPC bidirectional DC–DC converter is simulated with MATLAB/Simulink and further verified with a 2.5 kW experimental configuration. Both the simulation and experimental results confirm that the proposed MPC algorithm of the DC–DC converter reduces reactive power by avoiding the phase shift between primary and secondary sides of the high-frequency transformer and allow power transfer with unity power factor. Finally, an efficiency comparison is performed between the MPC and dual-phase-shift-based pulse-width modulation controlled DC–DC converter which ensures the effectiveness of the MPC controller.     

Domains and policies in third generation mobile network managementsystems

The efficiency and manageability of network management architectures, are based largely upon structuring principles, which make intensive use of concepts such as management domains and management policies. The paper discusses architectural aspects of management for the universal mobile telecommunication system (UMTS), and suggests a model for the structuring of the managed system into management domains, and the subsequent control of it through policies. Explicit statements are made concerning the representation of the policy structure. Furthermore, the assistance that standardized support managed objects can provide in policy implementation is examined. Finally, a schema for capturing the interrelations between policy objects is provided, assisting in this way the effective management of the policy structure     

Machine learning in vehicular networking: An overview

As vehicle complexity and road congestion increase, combined with the emergence of electric vehicles, the need for intelligent transportation systems to improve on-road safety and transportation efficiency using vehicular networks has become essential. The evolution of high mobility wireless networks will provide improved support for connected vehicles through highly dynamic heterogeneous networks. Particularly, 5G deployment introduces new features and technologies that enable operators to capitalize on emerging infrastructure capabilities. Machine Learning (ML), a powerful methodology for adaptive and predictive system development, has emerged in both vehicular and conventional wireless networks. Adopting data-centric methods enables ML to address highly dynamic vehicular network issues faced by conventional solutions, such as traditional control loop design and optimization techniques. This article provides a short survey of ML applications in vehicular networks from the networking aspect. Research topics covered in this article include network control containing handover management and routing decision making, resource management, and energy efficiency in vehicular networks. The findings of this paper suggest more attention should be paid to network forming/deforming decision making. ML applications in vehicular networks should focus on researching multi-agent cooperated oriented methods and overall complexity reduction while utilizing enabling technologies, such as mobile edge computing for real-world deployment. Research datasets, simulation environment standardization, and method interpretability also require more research attention.     

物联网与电信网融合策略探讨

本文首先介绍了物联网和传感网的基本概念,并列举了支撑物联网发展的关键技术.传统的物联网应用仅仅是孤立系统,未来物联网的发展必须实现和电信网的融合,实现相互之间的互通和应用融合.物联网和电信网的融合对于电信网自身在网络管理、业务管理、位置管理等方面提出了新的能力要求.本文最后给出了电信网和物联网的融合举措建议.     

哈尔滨广电运营支撑系统规划建设思路探讨

根据哈尔滨有线电视网络的实际情况,提出哈尔滨有线电视运营支撑系统的规划建设思路.通过对网络设备和业务的分析,探索性地提出系统实现的目标、原则、功能和步骤.建设具有广电特色的能够支撑三网业务融合的运营支撑系统,从而实现广电网络的统一规划、统一控制、统一管理的目标,实现运维工作的电子化、流程化、自动化.     

Smart OLT equipment of optical access network

A distributed architecture of optical line terminal(OLT) equipment is proposed for response to national bandwidth acceleration requirements and for future smooth evolution to 50G passive optical network(PON). This architecture moves the forwarding function of the control board to each service board to improve the switching capacity and performance of the system. The traditional control boards of centralized architecture OLT equipment have exchange and traffic processing function, and every servi...     

Self-Management for Access Points Coverage Optimization and Mobility Agents Configuration in Future Access Networks

A key challenge for the management systems of future networks is the reduction of human interventions in the fundamental management functions. These include mechanisms that render the networks capable to configure, optimize, heal and protect itself, but also handle the emerging complexity. Demands for the future internet networks mandate the rapid assessment of the feasibility of such cognitive management architectures that shall bridge the gap between conceptual design and practical network deployments. In this paper, a novel architecture is introduced, based on organized distribution of control feedback cycles at locations allocated across network’s operational elements. Two realisations of self-management in the operations of wired and wireless access network segments are presented. The first one is focused on organization of the wireless access regions in networks by the use of compartments of access points for enabling coverage optimization. A compartment-based approach facilitates the more efficient usage of network resources, exploiting local situation awareness and local optimisation features, according to the varying traffic needs. The second realization shows the control of mobility management processes in wired parts of access networks for balancing utilization of network resources. A dynamic deployment and re-configuration of mobility agents permit to tackle the problem of congestion induced by mobility agents in mobile protocols and combined with a dynamic access router assignment, network resources are efficiently balanced within the network. The paper concludes with findings and recommendations on how common principles of self-management evolve from design theory to practice.     

Telecommunications and processing for military command and control: Meeting user needs in the twenty-first century

MILITARY TELECOMMUNICATIONS will have to change significantly in order to support future command and control concepts. Highly automated communications systems will be required which must be able to manage themselves at the network level, as well as the internetwork level, if the survivable architectures required by users are going to be developed. Emerging technology in packet switching, internetwork protocols, automated network management, and artificial intelligence will provide the foundations for building such systems. With these technologies, a military telecommunications and processing environment can be evolved that will readily support distributed and hence survivable command and control in the battlefield of the future.     

Application of control plane technology to dynamic configurationmanagement

The distinction between switched and leased line services is beginning to disappear. Many network operators and suppliers are developing control plane technology for application in transport networks. This will allow faster service provisioning, particularly between network operators, and the creation of new network services. However, such systems will still require comprehensive management systems, and successful operators and vendors of the future will be those that are capable of developing operational support systems that complement the control plane with service management capabilities, automated plan and build processes, inventory management, and capacity planning. This article examines the distribution of functionality between the management and central planes for support of soft permanent and switched connections