Provide Internet Access Services Research Articles

Virtualisasi Server Menggunakan Proxmox Untuk Mengoptimalkan Resource Server Pada SMK Bhakti Persada

The server is a media that has an important role to provide internet access services for its users. So that the network can be used optimally, a server is needed. This study aims to design server virtualization in the Vocational School Bhakti Persada with the aim of building a flexible server infrastructure that optimizes the use of server resources, so it can be adjusted to the workload so that hardware resources are optimal. This research conducted a solution using the concept of virtualization, namely the use of proxmox to design a virtual server that can minimize maintenance costs as well as in hardware procurement. The use of hardware resources provided by the server machine has not been used optimally so that the right steps are needed to overcome this problem. Research results obtained from server virtualization using proxmox to optimize server resources can manage servers efficiently in terms of time and cost.

An Efficient Multi-Dimensional Resource Allocation Mechanism for Beam-Hopping in LEO Satellite Network

Low Earth Orbit (LEO) satellite communication networks have become an important means to provide internet access services for areas with limited infrastructure. Compared with the Geostationary Earth Orbit (GEO) satellites, the LEO satellites have limited on-board communication caching and calculating resources. Furthermore, the distribution of traffic requests is dynamically changing and uneven due to the relative movement between the LEO satellites and the ground. Therefore, how to schedule the multi-dimensional resources is an important issue for the LEO satellite communication networks. Beam-hopping is an efficient approach to improve the resource utilization by dynamically allocating time, power, and frequency according to the traffic requests. This paper proposes an efficient multi-dimensional resource allocation mechanism for beam-hopping in LEO satellite networks, which simultaneously satisfies the GEO interference avoidance. First, we construct the beam-hopping model of LEO satellites, and formulate the resource optimization problem. Second, we provide the weighted greedy strategy to determine the illumination pattern. In order to reduce the search space, the cells are clustered to non-interference clusters. Then, an improved genetic algorithm is provided to jointly allocate the communication resources. Finally, we construct various simulations to evaluate our proposed mechanism. Compared with the random-BH, polling-BH and traditional genetic algorithm, our algorithm achieves better performance in terms of both system throughput, access success rate, average delay and fairness between cells. The performance improvement is more significant in scenarios where traffic demand is unevenly distributed.

Perancangan Server Kantor Desa Tomuan Holbung Berbasis Client Server

Abstract− In the era of regional autonomy, the village is a very important part in determining the success of development and in direct contact with the community, especially in public services. Server is a medium that has an important role to provide internet access services for its users. So that the network can be used optimally, it is necessary to have a server. This study aims to design a server in the Tomuan Holbung Village Office, Asahan Regency by building an efficient, flexible server infrastructure and optimizing resource use, so that it can be adjusted to the workload so that hardware resources are optimal. This research was conducted to be a solution for the use of hardware resources provided by the Server machine that has not been used optimally, so efficient steps are needed to overcome this problem. The results of the research obtained are in the form of server design and optimizing the use of resources and managing servers efficiently in terms of time and cost.

The Decision on the Selection of the Best Cellular Card Operator Internet Package Using the Analytical Hierarchy Process (AHP) Method

The development of smartphone users who are used for internet access and social media is growing rapidly. So many internet data package providers issued by cellular card operators such as Indosat Ooredoo, Smartfren, Telkomsel, Tri and XL Axiata are competing to provide internet access services to consumers with competitive tariffs, quotas, active periods, speed of access, and promos Another interesting thing is that consumers feel confused and have difficulty in determining and selecting cellular card operators in accordance with the desired criteria, the reason being that there are many cellular card operators provided by telecommunications, so Analytical Hierarchy Process (AHP) methods are needed to solve the problem. The purpose of this study is to assist consumers in choosing internet packages on cellular card operators that suit their needs and make it easier for consumers to make decisions from a variety of criteria using the AHP method. The results of this study from many selected keriteria were chosen quickly and validly that Telkomsel became the best solution for internet package choices by 28% compared to 4 other cellular operators.Keywords: Internet Data Packages, Cellular Operators, AHP.

Consortium Blockchain-Based Secure Software Defined Vehicular Network

The vehicular ad hoc network (VANET) is a promising technology that can provide Internet access services for vehicles. With the development of VANET, tremendous intelligent vehicles will emerge mass and different communication requirements. Software-defined networking (SDN) is regarded as a potential technology to enhance network performance. In recent years, a new networking paradigm called software defined vehicular networks (SDVN) has been proposed. Nevertheless, the security issues still need to be considered for SDVN, because malicious vehicles can put forward fake requirements on the control plane of SDVN, which deteriorates the network performance in a certain degree. In this paper, we associate resources allocation problem with trust value of vehicles for the first time. The trust value of vehicles can be obtained through trust management system. Considering that there are many defects in the state-in-art trust management schemes, in this paper, a decentralized trust management architecture is designed which constitutes of three layers based on consortium blockchain. A joint proof-of-stake and modified practical Byzantine fault tolerance (PoS-mPBFT) algorithm is proposed to the shorten the confirmation time, which is deployed on RSUs. Different from previous researches that focus on designing methods to evaluate trust value, we use prediction model to estimate trust value of vehicles in the next period. After calculating trust value of vehicles, it assigns more resources to those high credibility vehicles when SDN services are provided. Meanwhile, to increase the efficiency of resource allocation, we convert the multiple-path mapping problem of the virtual network into the multi-commodity flow problem, which is solved by a heuristic algorithm. The simulation results indicate that the proposed trust management architecture and heuristic algorithm could provide better safety in SDVN and shorten consensus time, meanwhile effectively abstract underlying resources to enhance network load balance and capacity.

Amortized Fairness for Drive-Thru Internet

The drive-thru Internet is an effective mean to provide Internet access service for wireless sensor networks deployed on vehicles. In these networks, vehicles often experience different link qualities due to different relative positions to the access point. This makes fair and efficient system design a very challenging task. In traditional approaches, the network efficiency has to be greatly sacrificed to provide the fair share for vehicles with low link quality. To address this issue, we propose a novel amortized fairness MAC protocol. The basic idea is that vehicles with lower link quality can defer their fairness requests and let the lost fairness be “amortized” in the future when their links become the high quality. The amortized fairness MAC requires predictions of future link quality. For this, we fully exploit the inner and inter-AP correlations revealed from our extensive field studies and design a link quality prediction algorithm. Based on the predicted link quality, we formulate the optimal amortized fairness MAC as a convex programming problem, which can be solved with the desired precision in polynomial time. Extensive simulation on real traces shows that the amortized fairness MAC scheme is more efficient than the existing fairness schemes in terms of efficiency and fairness.

Advanced Technologies in Wireless Internet and Communications Networks (Editorial for WICON 2011 Special Issue)

Over the last two decades, wireless internet and communications networks have experienced an explosive growth in both the diversity of the techniques and its range of applications. Besides the traditional mobile communications services, current mobile communications networks can also provide internet access services. In order to provide higher data transmission rate, the 4th generation mobile communications systems, i.e., IMT-Advanced, have been developed and many advanced technologies, such as MIMO and OFDM, have been applied. The constantly developing wireless communications technologies also have enabled the extensive deployment of distributed wireless networks, such as the Ad Hoc networks. This kind of networks has applications in many important areas, such as military, healthcare, environment monitoring, and manufacturing. Due to the absence of central controllers, the distributed networks face many challenges. In recently years, radio spectrum has becoming exhausted because of the growing demands for wireless broadband communications. However, the traditional static spectrum allocation policy has prevented the spectrum utilization efficiency from further increasing. In order to overcome the spectrum shortage problem, cognitive wireless network, in which cognitive radio technique is applied, have drawn a great of research attentions. In the future wireless internet and communications networks, many advanced technologies, such as MIMO, OFDM, cognitive radio, distributed resource allocation/management, distributed admission control, etc., will be applied to satisfy the increasing demands for broadband wireless services. Our objectives for this special issue of ACM/Springer Mobile Networks & Applications are to collate and disseminate the most relevant achievements of research work on wireless network architectures, wireless access technologies, distributed admission control, advanced resource allocation/management, QoS guarantees, etc. In response to this call for papers, we have received a total of xx high-quality submissions, and 6 papers have been selected for publication after a rigorous review process. The first paper “Optimal Resource Allocation for Spectrum Sensing Based Cognitive Radio Networks with Statistical QoS Guarantees” by Y. Wang, P, Ren, Q. Du, and C. Zhang proposes an optimal resource allocation scheme for statistical QoS provisioning in spectrum sensing based cognitive radio networks subject to the average transmit and interference power constraints. The second paper “The Master–slave Stochastic Knapsack Modeling for Fully Dynamic Allocation” by S. Zhang, F. Yang, M. Zhao, and W. Zhou models the fully dynamic spectrum allocation scheme as a master–slave stochastic knapsack process, analyzes the equilibrium state transition, and derives the probability of blocking and forced termination for the secondary user. The third paper “A Method for Classifying Packets into Networks Flows Based on GHSOM” by H. Shi, T. Hamagami, H. Xu, P. Yu, and Y. Wu develops an intelligent network flow identifying method based on the neural network algorithm and suggests a new normalization for changing the raw network traffic to learn input vectors. The forth paper “Performance Improvement of the Precise Paging in CoLAC for 2G/3G Convergence Core Networks with Path Diversity” by Y. Su and X. Feng evaluates the system performance metrics in terms of handover success rate and P. Ren (*) Xi’an Jiaotong University, Xi’an, China e-mail: pyren@mail.xjtu.edu.cn

공공정보자원에서의 인터넷 필터링에 관한 연구

인터넷 상의 불법 유해 정보의 존재는 규제 당국뿐만 아니라 공공도서관과 학교를 비롯하여, 인터넷 서비스를 제공하는 모든 공공정보자원에서 큰 고민거리가 되어온 지 오래다. 특히 현대 정보사회에서 정보자원의 조직과 정보의 공개, 제공 및 이용서비스를 주 임무로 하고 있는 공공도서관의 경우 도서관 이용자들에 대한 인터넷 서비스의 제공은 필수적이라 할 수 있다는 측면에서 인터넷 정보를 둘러싼 규제 환경의 변화는 공공도서관 서비스 전반에 직접적인 영향을 미칠 수 있다. 1990년대 중반부터 본격화된 인터넷 정보에 대한 규제는 인터넷의 고유한 매체특성으로 인하여 법제도적 규제와 함께 기술적 규제 방식이 적극적으로 활용되어 왔다. 그러나 기술적 규제 방식 또한 각 나라마다. 매우 다양한 모습으로 발전하여 왔고, 더욱이 도서관 등과 같은 공공정보자원에서의 기술 규제는 표현의 자유와 알권리, 정보접근원의 침해라는 비판을 받아왔다. 이 글은 인터넷 규제와 표현의 자유에 대한 이론적 논의들로 시작하여, 인터넷에 대한 기술적 규제 방식으로 폭넓게 활용되고 있는 필터링 소프트웨어의 기술적 측면을 살피고, 인터넷 필터링을 중심으로 한 각국의 규제 양상을 비교 분석한다. 이를 통해 공공정보자원에서의 인터넷 필터링을 둘러싼 문제들에 대해 비판적으로 논의하고자 한다. Illegal and harmful information on the Internet have been a great concern not only for regulatory authorities, but also all the public institutes, such as public libraries and schools, that provide Internet access service. In particular, for public libraries which play an important role in organizing, opening and providing information resources in the information society, providing Internet access service are indispensible. Therefore, any changes of Internet content regulatory system may have direct effects on services of public libraries. Due to unique characteristics of the Internet, content refutation on the Internet has made a best use of various regulatory methods, ranging from governmental regulation to self-refutation and technical regulatory methods. However, nation by nation. technical regulatory methods on the Internet have been developed in quite different ways. Applying them on public library has been strongly criticised for violating freedom of expression and rights of access to information. This article begins with a theoretical discussion about free speech rights and refutation on Internet. Then it examines filtering software which is one of the most popular technical regulatory methods based on both technical and socio-humanities' prospects and analyses several governments' regulatory approaches to Internet filtering. As a conclusion, issues concerning Internet filtering at public institutes are critically apprised.

Survivable and delay-guaranteed backbone wireless mesh network design

Backbone wireless mesh networks (BWMNs) consisting of wireless mesh routers are emerging alternatives to implementations of metropolitan area networks (MANs). In a BWMN, gateways connect to the Internet via wireline links and provide Internet access services for users. Due to the limited wireless channel bit rate, multiple gateways are usually required in a BWMN, which costs budget and takes time to set up. In this paper, we study the network topology design and the gateway arrangement so that the construction cost of a BWMN is minimal. Two algorithms, namely, the Predefined Gateway Set Algorithm (PGSA) and the Self-Constituted Gateway Algorithm (SCGA), are proposed for the BWMN design. A genetic algorithm and a proposed enhanced Djikstra's algorithm are employed to search for the low-cost network configuration with constraints such as survivability, link capacity, degree limitation and maximum tolerable delay. Computational results show that the PGSA can give an acceptable network configuration rapidly. In case the gateway cost is high, using the SCGA can lower the network construction cost at the expense of more computational time.