Network Management System Research Articles

Development and Evaluation of a Big Data Framework for Performance Management in Mobile Networks

In telecommunications, Performance Management (PM) data are collected from network elements to a centralized system, the Network Management System (NMS), which acts as a business intelligence tool specialized in monitoring and reporting network performance. Performance Management files contain the metrics and named counters used to quantify the performance of the network. Current NMS implementations have limitations in scalability and support for volume, variety, and velocity of the collected PM data, especially for 5G and 6G mobile network technologies. To overcome these limitations, we proposed a Big Data framework based on an analysis of the following components: software architecture, ingestion, data lake, processing, reporting, and deployment. Our work analyzed the PM files’ format on a real data set from four different vendors and 2G, 3G, 4G, and 5G technologies. Then, we experimentally assessed our proposed framework’s feasibility through a case study involving 5G PM files. Test results of the ingestion and reporting components are presented, identifying the hardware and software required to support up to one billion counters per hour. This proposal can help telecommunications operators to have a reference Big Data framework to face the current and future challenges in the NMS, for instance, the support of data analytics in addition to the well-known services.

Simulation and operation control strategy of ground source thermal energy management system by cold and heat auxiliary technology

To explore the performance of the ground source thermal energy management system under the cold and heat sources, based on the cold and heat auxiliary technology, a ground source thermal energy composite management system is constructed and simulated. The constructed ground source heat pump-refrigeration unit-hybrid heating management system of urban heating networks, as well as the simple system, are analyzed and investigated in terms of power consumption and underground temperature control. The research results show that the constructed ground source heat pump-refrigeration unit-hybrid heating management system of the urban heating network has lower power and energy consumption than a simple system during the same period, which meets the economic requirements and guarantees the system with relatively low energy consumption. For underground temperature control, the constructed system is more stable than a simple system without excessive temperature fluctuations. The operation control strategy of the constructed system is mainly for chiller units, heat pump units, cooling towers, source side, and side circulation water pump modules. In summary, the constructed ground source heat pump-refrigeration unit-hybrid heating management system of an urban heating network based on the ground source heat pump meets the requirements for energy consumption and temperature control and can operate the control strategy normally. The results are significant for subsequent researches on the ground source thermal energy management system based on cold and heat auxiliary technology.

A Context-Aware Data-Driven Algorithm for Small Cell Site Selection in Cellular Networks

In mobile networks, detecting and eliminating areas with poor performance is key to optimize end-user experience. In spite of the vast set of measurements provided by current mobile networks, cellular operators have problems to pinpoint problematic locations because the origin of such measurements (i.e., user location) is not registered in most cases. At the same time, social networks generate a huge amount of data that can be used to infer population density. In this paper, a data-driven methodology is proposed to detect the best sites for new small cells to improve network performance based on attributes of connections, such as radio link throughput or data volume, in the radio interface. Unlike state-of-the-art approaches, based on data from only one source (e.g., radio signal level measurements or social media), the proposed method combines data from radio connection traces stored in the network management system and geolocated posts from social networks. This information is enriched with user context information inferred from traffic attributes. The method is tested with a large trace dataset from a live Long Term Evolution (LTE) network and a database of geotagged messages from two social networks (Twitter and Flickr).

Комплекс моделей функционирования и управления пакетной радиосетью КВ-диапазона

The author develop the conceptual control system model to ensure the sustainable projected promising packet radio network HF-band operating. It is proposed to implement the control functions at the Element Management System level on the basis of automated radio centers, and to implement the Network Management System level management functions on the basis of a dedicated server. Such a management approach allows you to build a hierarchical centralized radio network management system architecture. We can observe a simulation modeling for the developed algorithms of the selected radio network control functions. The paper presents the simulation results, namely probabilistic-temporal characteristics of the processes reliability, routing and functioning under attacks.

Design, Structure and Significance of Virtual Machines in Network Management System: An Emulation Analysis of VMware Based Hospital System in Pakistan

The trend of the use of virtual machines is vitally growing in the world. Virtual machines are being used in different organizations. These virtual machines come as a result from an output of a host hypervisor. If an organization or an institution is being run by virtualization then it is possible that unnecessary expenses, additional burden, wastage of resources and excesses of space can be reduced for networking. With the organizations when the structure of a medical institution or hospital is viewed it comes out that even big and small hospitals are shifting their management systems to certain kinds of networks. As it is visible in the rapidly advancing world that hospitals are also using networking technology so why not they shift to virtualization? So, to observe either virtualization can effectively run in a hospital scenario this research is conducted. To further analyze if this can work in the setting of Pakistan or not? This research is conducted according to an assumed situation of Hospital that has four different branches in a country. To find the outcomes simulation method is used. A network is built on VMware Workstation. This network is designed to run a hospital networking system. That comprises of a virtual private network server, firewall router, file transfer protocol server, web server, and voice over internet protocol server, virtual local area network, active directory, virtual switches, dynamic host control protocol et cetera. After proper testing of the VMware then fully loaded system is launched and every functional requirement is utilized to clearly investigate the progress of a virtual network and this research has resulted in a successful network management system for Health Care Hospital in Pakistan. In viewing this the researcher has invented two concepts in this research that are “Hospital Virtualization” and “Pocket Network Theory.”

Machine Learning for Optical Network Security Monitoring: A Practical Perspective

In order to accomplish cost-efficient management of complex optical communication networks, operators are seeking automation of network diagnosis and management by means of Machine Learning (ML). To support these objectives, new functions are needed to enable cognitive, autonomous management of optical network security. This article focuses on the challenges related to the performance of ML-based approaches for detection and localization of optical-layer attacks, and to their integration with standard Network Management Systems (NMSs). We propose a framework for cognitive security diagnostics that comprises an attack detection module with Supervised Learning (SL), Semi-Supervised Learning (SSL), and Unsupervised Learning (UL) approaches, and an attack localization module that deduces the location of a harmful connection and/or a breached link. The influence of false positives and false negatives is addressed by a newly proposed Window-based Attack Detection (WAD) approach. We provide practical implementation guidelines for the integration of the framework into the NMS and evaluate its performance in an experimental network testbed subjected to attacks, resulting with the largest optical-layer security experimental dataset reported to date.

ФОРМУВАННЯ СТРАТЕГІЇ УПРАВЛІННЯ РЕЖИМАМИ РОБОТИ СИСТЕМ ЗАХИСТУ НА ОСНОВІ МОДЕЛІ ІГРОВОГО УПРАВЛІННЯ

The main areas of application of game theory are economics, political science, tactical and military-strategic tasks, evolutionary biology and, more recently, information technology, security and artificial intelligence. Game theory studies the problems of decision-making of several people (players). It concerns the behavior of players whose decisions affect each other. The application of game theory in the field of modeling decision-making processes has different approaches, which are not systematized in the future, and sometimes contradict each other. Game theory is designed to solve situations in which the outcome of players' decisions depends not only on how they choose them, but also on the choices of other players with whom they interact. If we consider the field of information security, the peculiarity of the information conflict between the operational management system of information protection and the infringer who tries to gain unauthorized access is that opposing parties who have several ways of action can apply them repeatedly, choosing the best way based on information about the opposite parties. In this case, each step of resolving the conflict is characterized not by the final state, but by some payment function. In many situations, when designing information security systems, there is a need to develop and make decisions in conditions of uncertainty. Uncertainty can be of different nature. The planned actions of hackers, which are aimed at reducing the effectiveness of security systems, are uncertain. Uncertainty may relate to a risk situation in which the management system of the information network that decides on the application of the protection system is able to establish not only all possible results of decisions, but also the probability of possible conditions for their occurrence. Design conditions affect decision-making subconsciously, regardless of the actions of the decision-maker. When all the consequences of possible decisions are known, but their probability is unknown, it is obvious that decisions are made in conditions of complete uncertainty. The main promising theory of analysis of decision-making processes at the stage of designing information security systems is game theory. Therefore, there is a need to develop methods of operational (adaptive) management of information protection, depending on the availability of a priori information about the possibility of attacks by the infringer and his strategy to create unauthorized access to information resources. Game theory allows us to offer recommendations for the formation of management strategies for protection systems.

МОДУЛЬ ПРИНЯТИЯ РЕШЕНИЙ ПО УПРАВЛЕНИЮ ИНФОРМАЦИОННОЙ БЕЗОПАСНОСТЬЮ ИНФОРМАЦИОННО-КОММУНИКАЦИОННОЙ СЕТИ

At a critical object information security management system and system of hacker, who realizes deconstructive computer attacks at any nodes of this object information and communications network are in confrontation. On the one hand, hacker influences at the object information and communications network for realizing main stages of agential and technical computer intelligences service and attacking afterwards. On the other hand, critical object information security management system finds unauthorized actions of hacker and realizes necessary measures to block/neutralize/prevent them. As practice shows, management impacts of information security management system make whith delay and most of all when hacker already has achieved the goal. For efficiency of decision-making for blocking/ neutralization/prevention of deconstructive computer attacks from hacker at the information and communications network nodes by the information security administrator of critical object, decision-making module of information security management system of information and communications network is offers. This module feature is the possibility of list formation of rational measures for protection critical object information and communications network considering network creation features, tactical and technical characteristics of network nodes, hacker opportunities. The module is based on mathematical models of the processes mentioned above and rational measures selection algorithm for protection of critical object information and communications network. Algorithm allows to find out possible reasons of insufficient efficiency of object information and communications network functioning in conditions when hacker realizes deconstructive computer attacks at network nodes.

Elaborate Reliability Evaluation of Cyber Physical Distribution Systems Considering Fault Location, Isolation and Supply Restoration Process

The existing reliability models of the cyber physical distribution systems, which are mostly based on some simplified assumptions, cannot accurately evaluate the reliability of complex cases in practical engineering applications. To solve this problem, an elaborate reliability evaluation method considering the whole process of fault location, isolation and supply restoration is proposed. This paper establishes reliability models of components and the two systems, summarizes the mapping relationship between various cyber system failures and the physical fault handling into several laws, proposes the reliability evaluation procedure in the framework of Monte Carlo method, and verifies the feasibility and effectiveness of the method in an actual distribution network cyber physical system. In the proposed method, the multiple component characteristics, complex topological structure, coupling relationship of the cyber-physical distribution systems, and the actual human-computer joint participation are considered in the analysis of fault location, isolation and supply restoration process, which provides a effective and accurate theory for the application of reliability evaluation in the actual distribution network and prosumer energy management system.

ТРАНСФОРМАЦИЯ ПОДХОДОВ К УПРАВЛЕНИЮ СОВРЕМЕННЫМИ СЕТЯМИ СВЯЗИ

Modern communication networks for special purposes —communication networks designed for the needs of state authorities, the needs of the country's defense, state security and law enforcement - these are complex decentralized network structures that use the resources of public communication networks and commercial communication protocols. The management of such structures requires a transition to new management models, since hierarchical and distributed static network management systems, such as TMN and OSS/BSS, no longer fully meet the requirements for managing state and military networks. These systems provide only partial automation of decision-making in network management. They are still not ready for constant changes and are not able to adapt to them because of their rigidly static nature. Also, over time, control systems will encounter such a problem as the heterogeneity and mobility of a huge number of network devices in the - mobile control and managed devices, drones, wearable networks, etc. As a result of all of the above, it becomes necessary to search for new models and methods for building telecommunication management systems. From the point of view of managing such infrastructures, the transition to distributed cognitive management models, as well as models that take into account the volume and context of data generated by control systems in the process of their functioning, is gaining importance. In this paper, the authors considered the evolution of networks control models: starting with traditional approaches and moving on to modern models and methods for managing telecommunications of the future. In the course of the study, in addition to studying traditional approaches to telecommunication management, a cognitive model based on multi-agent self-organization was identified and the relevance of this approach to managing post-NGN networks was examined.

Network security defense model based on firewall and IPS

With the spread of the COVID-19 epidemic, the government has put forward higher requirements for network security and reliability through the flow of network managers and the release of information. Traditional intrusion detection technology and firewall technology cannot effectively defend against DDoS attacks. This paper analyzes the principles and defects of intrusion detection system and firewall. In this paper, the architecture design of intrusion prevention system which integrates audit and network defense functions is proposed. The system optimizes the detection and analysis component of detecting attack behavior according to the special requirements of attack defense task, and adds the module of attack behavior characteristic analysis and defense strategy generation. The policy execution component uses a special defense engine to execute defense policies, providing the system with deep defense capabilities. Experiments show that the validity and reliability of the key modules in the proposed defense model meet the technical requirements. It has a certain reference value to improve the reliability of network management system under the influence of COVID-19 epidemic situation.

Coordination of centralised and distributed intelligence to reduce curtailment of flexible generators using active network management

The development of better intelligence on the network management systems combined with a new model of connections for customers allows the UK Power Networks to defer traditional reinforcement. This consequently reduces connections, maintenance and operation costs for the customers. The development of intelligence at the field devices is key to the safe operation of the network and management of customer's connections. In view of that, the UK Power Networks has designed, developed and trialled a remote terminal unit (RTU) logic with fail-to-safe that integrates with the centralised smart applications and the distributed controllable devices. Therefore, customers will not only be controlled by a centralised system but also locally by an on-site RTU, which acts as a smart communication gateway with embedded intelligence to execute failsafe actions locally. These fail-to-safes are particularly important in the absence of a central control system which can then reduce the unnecessary curtailment of generators by introducing additional time and safe operating limits for them to export the power to the grid.

A Study on the Establishment of Community Safety Network Management System

시민이 실생활을 영위하는 지역사회 안전도는 선진국을 가늠하는 가장 중요한 척도라고 할 수 있다. 일반적으로 안전관리는 국가기관에 의해 총괄되는 것으로 인식되고 있으나 안전은 관리책임의 문제가 아니라 실질적인 안전상태의 달성이 중요한 것이다. 현대사회는 과학기술의 발달과 관련 자료의 집약으로 위험대처 능력이 강화되었다고 여겨지지만, 현실의 위기대응능력은 우리 기대와 다른 것이 사실이다. 실질적 안전달성은 거대한 관리체계에 의한 것이 아니라 실거주 지역별로 촘촘한 안전관리망이 구축되는 것이 더 효율적이라고 할 수 있다. 때문에 본 연구에서는 지역단위의 사회안전을 위해 민간과 경찰이 공동으로 관리하는 지역사회안전망 관리시스템을 구축하는 방안을 모색하고자 한다. 이러한 지역사회안전망은 위험의 종류와 지역환경을 결합하여 일반-구체적 위험, 일반-추상적 위험, 특별-구체적위험, 특별-추상적위험의 4가지 조합을 기준으로 구성하고자 한다. 안전의 궁극적 달성을 위해서는 위험별 민관 협력시스템 구축, 현장 대응능력의 극대화, 지역안전 평가위원회 설치, 예방적 상담 관리사 제도 도입, 안전 인프라 구축이 필요하다. 그러나 가장 중요한 것은 안전사회는 관리의 주체와 객체가 별개로 분리된 것이 아니라는 사실을 모두가 인식하여 안전인지감수성을 제고시켜야 한다는 것이다.The degree of community safety in terms of citizens’s lives is the most important measure in determining whether or not a country is developed. In general, safety management is recognized as being supervised by a national institution, but the achievement of actual safety conditions is more important than the responsibility of management. Modern society is believed to enhance its ability to handle risks due to the development of science and technology and the integration of related data. However, the risk management ability falls far short of our expectations. Realistic safety can be achieved not by a large management system but by a dense safety management network by an actual residential area. Therefore, this study seeks to find out measures to establish a community safety network management system jointly managed by the private sector and the police at the local level. The community safety network, combined with the type of risk and the local environment, is designed to be developed on four criteria: general-concrete risk, general-abstract risk, special-concrete risk and special-abstract risk. The ultimate attainment of safety requires the establishment of public-private partnership system by risk, the maximum of field response capacity, the establishment of regional safety assessment committee, the introduction of preventive consultation manager system, and the establishment of safety infrastructure. About all, the fact that the subject and object of managing a safety society are not separated must be recognized and everyone should achieve it together.

Improvement and implementation of Wireless Network Topology System based on SNMP protocol for router equipment

With the continuous expansion of computer network scale and the diversity of network equipment, the traditional single computer network maintenance and management method is no longer applicable. Therefore, in order to achieve efficient and accurate management of computer networks and ensure the stable operation of computer networks in various applications, computer network management software with superior performance and corresponding topology discovery technology become the key. In this paper, SNMP (Simple Network Management Protocol) network topology discovery algorithm is deeply analyzed in the laboratory computer network environment, and its shortcomings are pointed out. In view of the shortcomings of traditional SNMP algorithm, this algorithm is optimized and improved, and helps ICMP (Internet Control Message Protocol) detect the internal subnet, so as to discover the main network topology accurately and efficiently. In order to solve the heterogeneity of information storage modes in MIB (Management Information Base) libraries of different devices in laboratory network environment, this paper innovatively adds an optimized SNMP algorithm aiming at the heterogeneity of network devices, thus realizing the universality of network topology. Finally, the experiments show that the time dissipation of the proposed algorithm is less than 10 data points compared with the traditional algorithm under the same experimental conditions. The laboratory network environment based on the proposed system can achieve a fast and smooth laboratory network, which has obvious advantages compared with the traditional network management system.

PENANGGANAN JARINGAN IRIGASI KRUENG BARO KABUPATEN PIDIE MELALUI ANGKA KEBUTUHAN NYATA OPERAISONAL DAN PEMELIHARAAN (AKNOP)

Krueng Baro Irrigation Area is one of the irrigation areas which is focused on increasing food crop productivity in Pidie District. To support the existence of the irrigation, of course, it must be supported by a well-organized irrigation system, so an effective irrigation network management system is needed through the O and M program. O and M activities require a truly real value or cost figure which is the result of the search for irrigation networks known as the real operation and maintenance demand value. The physical condition of the Krueng Baro Irrigation Network if viewed from the results of the irrigation network inventory still has many obstacles that hamper the fulfillment of rice water needs, including physical damage to buildings and irrigation channels. The evaluation of irrigation network performance is the first step in the preparation of the real operation and maintenance demand value, the rate of performance of the Krueng Baro Irrigation Area network is 68.06% (BWSSI, 2017) which falls into the less category and needs attention. This study aims to identify Irrigation Network O and M activities and the real operation and maintenance demand value Krueng Baro irrigation. The research method is in the form of observations / field observations and documentation to obtain the existing conditions of irrigation networks which subsequently identify O and M plans and preparation of the real operation and maintenance demand value. After the preparation of the real operation and maintenance demand value was obtained the output of the value of the real cost requirement in carrying out routine operations was only 0.53% (IDR 529,180,000.00), Routine Maintenance 6.52% (IDR 6,510,464,300.00), while for Periodic Maintenance is very large, namely 92.95% (IDR. 92,764,196,192.00) compared to the overall total cost (IDR. 99,803,840,492.00). In order to achieve the full O and M Plan and the real operation and maintenance demand value Krueng Baro Irrigation Network due to the limited budgetary budget so is divided into a 5-year priority program plan reference to Minister of Public Works and Housing Regulation No. 12 / PRT / M / 2015 with the first year priority carried out on the main building which greatly influences performance and function of the irrigation system such as turnover of intake doors, olak ponds and upstream weir sediment excavation and some buildings and channels that have been destroyed and not functioning on the carrier channel.

Environmentally Sustainable Management of 3D Printing Network: Decision Support for 3D Printing Work Allocation

The purpose of this study is to provide a model for environmentally sustainable management of 3D printing network systems. The proposed model provides not only a flexible structure to describe 3D printing processes but also a computational structure to find the optimal work allocation plan for minimizing environmental impact. A mathematical model is formulated to assist the optimal part-to-printer allocation decision in 3D printing network systems even under uncertainty. Numerical examples show that the proposed model can determine the operation of shared 3D printers in order to have minimum environmental impact. The proposed model can also deal with data uncertainty and provide robust solutions.

Application and Research of FC + Mobile Device Terminal in Practical Teaching

Taking English argumentative writing teaching oriented to real situations as an example, this paper explores how students can use the learning management platform, network system and learning system in mobile device terminals. Combined with the teaching structure of FC, that is, classroom pre-learning—classroom immersion learning—independent research after class, to solve the problem of the lack of English thinking ability—logical thinking, critical thinking and creative thinking—in the stage of writing learning in class and in the final draft of writing. The result shows that compared with the traditional teaching mode or the FC, the FC + mobile device terminal teaching mode (FCMDTTM) is more helpful to improve students' English argumentative writing ability.

A QoE-Driven Traffic Steering Algorithm for LTE Networks

Due to the diversity of mobile services and raising user expectations, mobile network management has changed its focus from Quality of Service (QoS) to Quality of Experience (QoE). As a consequence, classical network optimization procedures must be updated accordingly. One of these procedures is traffic sharing, whose aim is to redistribute traffic among adjacent cells so as to provide an adequate QoE to subscribers. In this work, a novel QoE-driven traffic sharing algorithm based on mobility load balancing is proposed for LTE networks offering services of very different nature. Unlike previous approaches, where the aim was to balance some QoS indicator, the aim here is to equalize the QoE provided by all cells in the network. For this purpose, the handover margins between adjacent cells are tuned on a per-adjacency or per-service basis based on QoE measurements collected in the network management system. Method assessment is based on a dynamic system-level simulator implementing a realistic LTE scenario. Results show that the proposed QoE-driven traffic sharing algorithm alleviates QoE problems by equalizing user QoE throughout the scenario.

A Software-Defined Management System for IP-Enabled WSNs

Software-defined networking (SDN) offers potential pathways to overcome the management complexity of the Internet of Things (IoT). Previous studies have often been limited to software simulations or general proposals only. In this article, we design and evaluate an SDN-based management system for wireless sensor networks (WSNs) using IPv6 over low-power wireless personal area networks (6LoWPAN). The framework is described in detail covering different data-, control-, and application-plane implementations, and includes a novel addressing scheme and packet format. It also uses a centralized routing protocol, located at the SDN controller, based on the shortest path algorithm. We compare our approach with the routing protocol for low-power and lossy networks (RPL), which uses a distributed routing protocol. Hardware tests were carried out in a dynamic environment, with multiple sources of interference for different payload sizes to evaluate the impacts and practicality of SDN in WSNs. The performance comparison shows that the proposed SDN management system for IP-enabled WSNs using a centralized routing protocol outperforms the RPL protocol in terms of round-trip time, jitter, memory consumption, and packet loss rate (PLR), despite the control overhead introduced.

Perspectives of using standards based on management systems for increasing the competitiveness of fruit and vegetable products in the republic of Uzbekistan

This article examines the role and importance of agriculture in the economy of the Republic of Uzbekistan and demonstrates the need to improve the competitiveness of fruit and vegetable products in future economic reforms and the need for implementing a network management system. The SWOT method also shows the prospects and ways to increase the competitiveness of fruits and vegetables in the global agrarian and food markets.