Journal of High Speed Networks - Volume 28, issue 3

Authors: Yuan, Yuxia | Xu, Zengyong

Article Type: Research Article

Abstract: Edge computing can place computing, storage, bandwidth, application and other resources on the edge of the network to reduce transmission delay, and bandwidth limitation for users. Therefore, task scheduling and resource allocation in edge computing have become a new research focus. In view of the dynamic nature of computing resources in edge computing and the computing power limitation of a single computing resource, this paper proposes a computing resource allocation scheme based on edge computing under augmented reality (AR) application. On the premise of ensuring the completion time of sub-tasks and the revenue of computing service devices, the method transforms …the computing resource allocation problem in edge computing into the many-to-many matching problem between sub-tasks and computing service devices. The performance of the proposed scheme is analyzed through experiments, and the results show that the resource allocation time is relatively stable, and it is better than other state-of-the-art algorithms in terms of the edge calculation, task delay, and task violation rate. Show more

Keywords: Edge computing, resource allocation, AR, matching problem

DOI: 10.3233/JHS-220687

Citation: Journal of High Speed Networks, vol. 28, no. 3, pp. 143-156, 2022

Authors: Chi, Ronghua | Li, Leilei | Gui, Sang | Wang, Fei | Mao, Zijian | Sun, Xiaohan | Cao, Ning

Article Type: Research Article

Abstract: In order to further increase the span length of the Optical Transport Network (OTN) transmission system, a combination of Raman amplifier and remotely optical pumped amplifier (ROPA) configuration scheme is recommended. Optimal EDF length, optimal ROPA position and OTN span limitation are obtained through simulations. A field-trial with 8*10 Gb/s in 380 km span system is carried out with the amplifier configuration of Raman amplifier plus first-order and second-order remotely pumped amplifier. By adding a second-order remote pump laser, the transmission limit is increased from 77.5 dB to 80.7 dB. Through detailed analysis of the system, it is concluded that the second-order remote pump …can effectively transfer the pump power to the first-order remote pump wavelength, which greatly increases the pump power at the gain module, thereby increasing the gain of the RGU and reduce its noise. Moreover, the introduction of the second-order remote pump effectively weakened the self-excited effect and overcomes the shortcomings of the low pump power threshold of the first-order remote pump. Show more

Keywords: Optical transmission network, OTN, ultra-long span system, optical fiber amplifier, high-order remotely optical pumped amplifier, high-order Raman amplifier

DOI: 10.3233/JHS-220688

Citation: Journal of High Speed Networks, vol. 28, no. 3, pp. 157-165, 2022

Authors: Hammouche, Y. | Merniz, S.

Article Type: Research Article

Abstract: In recent years, vehicular communication systems have taken an important place in Intelligent Transport Systems (ITS). These systems are designed on self-organizing networks, known as Vehicular Ad hoc NETworks (VANETs). Their objective is to struggle against road safety problems and road traffic congestion by integrating information and communication technologies in road infrastructures and vehicles. VANET differs from other types of ad hoc networks by high mobility and very dynamic topology. Consequently, the design of an efficient VANET routing protocol becomes a challenging task. Many routing schemes with QoS (Quality of Service) have been proposed in the literature for VANET, to …satisfy the performances required by the different applications running upon such networks. Cross-layer designs, which make it possible to exchange and share information between the different layers of the network, have shown to be efficient in VANETs. This paper proposes an improved version of the geographic Greedy algorithm as a cross-layer routing protocol for VANETs. The cooperation between the network layer and the lower layers involves three cyber-physical parameters: Speed, position and Signal-to-Noise Ratio (SNR). The simulation results over the Network Simulator-3 (NS3) demonstrated the effectiveness of the proposed solution in terms of end-to-end delay, throughput and packet delivery ratio. Show more

Keywords: VANET, routing, cross-layer, greedy

DOI: 10.3233/JHS-220689

Citation: Journal of High Speed Networks, vol. 28, no. 3, pp. 167-179, 2022

Authors: Enokido, Tomoya | Duolikun, Dilawaer | Takizawa, Makoto

Article Type: Research Article

Abstract: In current information systems, a huge number of IoT (Internet of Things) devices are interconnected with various kinds of networks like WiFi and 5G networks. A large volume of data is gathered into servers from a huge number of IoT devices and is manipulated to provide application services. Gathered data is encapsulated along with methods to manipulate the data as an object like a database system. In object-based systems, each application is composed of multiple objects. In addition, each object is replicated on multiple physical servers in order to increase availability, reliability, and performance of an application service. On the …other hand, replicas of each object is required to be mutually consistent in presence of multiple transactions. Here, a larger amount of electric energy and computation resources are consumed in physical servers than non-replication approaches to serialize conflicting transactions on multiple replicas. Many algorithms to synchronize conflicting transactions are so far proposed like 2PL (Two-Phase Locking) and TO (Timestamp Ordering). However, the electric energy consumption is not considered. In this paper, an EEQBL-OMM (Energy-Efficient Quorum-Based Locking with Omitting Meaningless Method) protocol is newly proposed to reduce not only the average execution time of each transaction but also the total electric energy consumption of servers by omitting the execution of meaningless methods on replicas of each object. Evaluation results show the total electric energy consumption of servers, the average execution time of each transaction, and the number of aborted instances of transactions in the EEQBL-OMM protocol can be on average reduced to 79%, 62%, and 80% of the ECLBQS (Energy Consumption Laxity-Based Quorum Selection) protocol which is proposed in our previous studies in a homogeneous set of servers, respectively. In addition, the evaluation results show the total electric energy consumption of servers, the average execution time of each transaction, and the number of aborted instances of transactions in the EEQBL-OMM protocol can be on average reduced to 73%, 50%, and 67% of the ECLBQS protocol in a heterogeneous set of servers, respectively. The evaluation results also show at most 48% and 51% of the total number of methods can be omitted as meaningless methods in a homogeneous set and heterogeneous set of servers, respectively, in the EEQBL-OMM protocol. Show more

Keywords: Distributed object-based systems, locking protocols, meaningless methods, green computing, EEQBL-OMM protocol

DOI: 10.3233/JHS-220690

Citation: Journal of High Speed Networks, vol. 28, no. 3, pp. 181-203, 2022

Authors: Zhang, Ling | Zhang, Jian-Wei | Xin, Xiang-Jun | Zhou, Kai-Lai

Article Type: Research Article

Abstract: This study aimed to deal with the problems that current intrusion detections have poor classification ability toward small sets of samples. A new intrusion detection model based on coordinative immune and random antibody forest (CIRAFID) is proposed. The vaccination mechanism of coordinative immune algorithm is designed to increase the fitness of poor antibodies, a kind of random antibody detection forest model is given to detect anomalies, and to classify attacks. The experimental results show: the proposed model has higher detection rate, classification accuracy, classification ability and lower false positives rate.

Keywords: Intrusion detection, antibody, vaccine, coordinative immune, random antibody forest

DOI: 10.3233/JHS-220691

Citation: Journal of High Speed Networks, vol. 28, no. 3, pp. 205-220, 2022

Authors: Souri, Alireza

Article Type: Research Article

Abstract: Today, Internet of Things (IoT) has provided intelligent interactions between sensors, smart devices, actuators, and cloud-based applications to ease human life. Currently, IoT-based connectivity management systems use computer-assisted learning methods to increase learning level and better understanding of the curriculums for students in universities, schools and research centers. On the other hand, virtual connectivity management systems are applied to facilitate teaching and learning methods under taken of pandemic effects. Because, data mining methods have important effect to enhancement and navigate IoT-based connectivity management systems, this paper presents a technical analysis on Artificial Intelligence (AI) approaches for connectivity management systems in …IoT environments. This paper provides a comprehensive perspective on vehicular communication systems, Internet of Vehicles (IoV) methods and Vehicular Ad Hoc Network (VANET) environments that have evaluated using machine learning, fuzzy logic and intelligent algorithms. Also, applied evaluation metrics to predict and detect efficient connectivity methods, succeed learning models and enhancement of IoT-based connectivity management systems are discussed and analyzed for existing AI approaches. Finally, new research directions and emerging challenges are outlined to improve the performance of advanced IoT-based connectivity management systems. Show more

Keywords: Internet of Things, connectivity management systems, vehicular communication, artificial intelligence

DOI: 10.3233/JHS-220692

Citation: Journal of High Speed Networks, vol. 28, no. 3, pp. 221-230, 2022