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Modelling Internet Routing State Growth for IPv6 -
A Configurable Integration Framework for Access Gateway Function and User Plane Function on Heterogeneous Programmable Data Planes -
AI-Driven Threat Detection and Automated Incident Response for Enhancing Network Security -
Machine Learning Framework for Detecting False Alerts in Safety Messages
Journal Description
Network
Network
is an international, peer-reviewed, open access journal on science and technology of networks, published quarterly online by MDPI.
- Open Access— free for readers, with article processing charges (APC) paid by authors or their institutions.
- High Visibility: indexed within ESCI (Web of Science), Scopus, EBSCO, and other databases.
- Journal Rank: JCR - Q2 (Computer Science, Information Systems) / CiteScore - Q1 (Engineering (miscellaneous))
- Rapid Publication: manuscripts are peer-reviewed and a first decision is provided to authors approximately 23.2 days after submission; acceptance to publication is undertaken in 4.8 days (median values for papers published in this journal in the first half of 2026).
- Recognition of Reviewers: APC discount vouchers, optional signed peer review, and reviewer names published annually in the journal.
- Network is a companion journal of Electronics.
- Journal Clusters of Network and Communications Technology: Future Internet, IoT, Telecom, Journal of Sensor and Actuator Networks, Network, Signals.
Impact Factor:
3.7 (2025);
5-Year Impact Factor:
3.1 (2025)
Latest Articles
Interference-Calibrated Algebraically Projected Antenna Selection with Certified Graph Learning for Massive MIMO Under Realistic Multi-Cell Impairments
Network 2026, 6(3), 67; https://doi.org/10.3390/network6030067 - 22 Aug 2026
Abstract
Antenna selection is investigated as a means of reducing radio-frequency (RF) chain power in massive multiple-input multiple-output (MIMO) base stations under realistic channel state information (CSI) impairments. The study is motivated by the mismatch between conventional selection objectives and multi-cell operation with estimation
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Antenna selection is investigated as a means of reducing radio-frequency (RF) chain power in massive multiple-input multiple-output (MIMO) base stations under realistic channel state information (CSI) impairments. The study is motivated by the mismatch between conventional selection objectives and multi-cell operation with estimation error, pilot contamination, spatial correlation and inter-cell interference. APCS-Boost-R is introduced as the primary contribution. An interference-whitened D-optimal seed is combined with projected rank-one exchanges and a calibrated surrogate that incorporates a user-side interference-plus-noise report and a closed-form estimation-error correction. APCS-Boost-RG is retained as an optional graph neural network (GNN) refinement in which residual exchanges are ranked after the algebraic solution has been formed, while feasibility and non-degradation of the calibrated surrogate are verified deterministically. In a three-cell urban macro configuration derived from Third Generation Partnership Project (3GPP) TR 38.901 with 64 antennas, 16 active RF chains and eight users per cell, APCS-Boost-R achieves 19.364 bit/s/Hz over 200 paired realizations. Improvements of 2.58 percent over APCS-Boost, 6.76 percent over greedy search and 10.16 percent over a genetic algorithm are obtained. APCS-Boost-RG adds 0.019 bit/s/Hz but is treated as an optional refinement because it requires a second-stage neighborhood evaluation and offline model maintenance. In the archived common timing record, APCS-Boost-R requires 20.376 ms per three-cell realization, compared with 12.728 ms for APCS-Boost, 57.775 ms for norm-initialized greedy search and 41.302 ms for the genetic algorithm, while APCS-Boost-RG requires 24.0 ms versus 20.4 ms for APCS-Boost-R in the separate archived learned-stage record. Separate reconstructions on the documented reproducibility host require ms for APCS-Boost-R and ms for a complete APCS-Boost-RG rebuild. Additional paired examinations confirm robustness across stronger search budgets, report imperfections, regularized precoding, coordination, near-field sensitivity, hardware perturbations, and configurations ranging from 32 to 128 antennas and one to seven cells.
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(This article belongs to the Special Issue Advances in Wireless Communications and Networks)
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Open AccessReview
Adaptive 360° Video Streaming: Prediction, Tiling, and Transport Trade-Offs
by
Muhammad Farooq, Gioacchino Manfredi, Luca De Cicco and Saverio Mascolo
Network 2026, 6(3), 66; https://doi.org/10.3390/network6030066 - 17 Aug 2026
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The growing demand for virtual reality and immersive applications has increased interest in 360° video streaming. When viewing omnidirectional content through a head-mounted display, users observe only a limited portion of the content, i.e., the viewport, at any given time. Consequently, transmitting the
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The growing demand for virtual reality and immersive applications has increased interest in 360° video streaming. When viewing omnidirectional content through a head-mounted display, users observe only a limited portion of the content, i.e., the viewport, at any given time. Consequently, transmitting the complete panoramic frame at uniformly high quality is bandwidth-inefficient. This review presents a system-level analysis of viewport-adaptive three-degree-of-freedom (3DoF) 360° video streaming, focusing on the coupled roles of viewport prediction, tile-based multi-rate encoding and bitrate allocation, transport mechanisms, and edge-assisted processing. The reviewed literature is examined to identify the design dependencies and trade-offs among these components. Viewport-adaptive approaches seek to reduce the bandwidth allocated to regions outside the instantaneous viewport while preserving the quality of the visible region. The analysis shows that their effectiveness cannot be attributed to prediction accuracy alone: the resulting Quality of Experience (QoE) depends jointly on tile granularity, bitrate allocation, buffer occupancy, transport delay, and whether prioritized tiles arrive before their playback deadlines. Finer tiling can improve spatial selectivity but increases coding, signaling, and request overhead. Moreover, HTTP/2, HTTP/3/QUIC, RTP/RTSP, and WebRTC present different reliability, latency, congestion-control, and scalability trade-offs across buffered video-on-demand, low-latency live streaming, and interactive immersive applications. Based on this synthesis, the review formulates a unified closed-loop cross-layer framework that coordinates prediction, tiling, bitrate allocation, request timing, transport configuration, buffering, and edge processing under bandwidth, latency, and resource constraints.
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Open AccessArticle
Design and Evaluation of PSA-FRR and PSAR-FRR for Fast Reroute in Homogeneous and Hybrid SDN Networks
by
Md Imtiaz Ahmed and Yaser Al Mtawa
Network 2026, 6(3), 65; https://doi.org/10.3390/network6030065 - 10 Aug 2026
Abstract
Fast Reroute (FRR) after link failures is essential for carrier-grade Software-Defined Networking (SDN), yet hybrid deployments remain dominated by slow legacy routing convergence. This paper presents two port-state-driven FRR mechanisms for homogeneous and hybrid SDN networks. First, Port-State-Aware Fast Reroute (PSA-FRR) uses OpenFlow
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Fast Reroute (FRR) after link failures is essential for carrier-grade Software-Defined Networking (SDN), yet hybrid deployments remain dominated by slow legacy routing convergence. This paper presents two port-state-driven FRR mechanisms for homogeneous and hybrid SDN networks. First, Port-State-Aware Fast Reroute (PSA-FRR) uses OpenFlow port-status events to trigger proactive, rule-based protection in the data plane. Second, Port-State-Aware Neural Fast Reroute (PSAR-FRR) formulates hybrid FRR as a controller-local multi-class classification problem and predicts the backup egress port from a port-centric state representation, enabling microsecond-scale decision latency. We evaluate the methods on the Abilene wide-area network (WAN) topology using Mininet with Open vSwitch (OVS) and a Ryu controller (homogeneous case) and Graphical Network Simulator-3 (GNS3) with Cisco IOS routers (hybrid baseline). In homogeneous SDN emulation, PSA-FRR restores connectivity within 30–100 ms under the evaluated configurations. In the hybrid baseline, conventional routing protocols converge in 13.8–256.1 s (Enhanced Interior Gateway Routing Protocol (EIGRP), Intermediate System to Intermediate System (IS-IS), Open Shortest Path First (OSPF), Border Gateway Protocol (BGP), and Routing Information Protocol (RIP)), confirming that control-plane recovery cannot meet a 50 ms target. Using the collected dataset, PSAR-FRR reduces controller decision time from 6.753 s (PSA-FRR rule evaluation) to 0.214 s (deep neural network (DNN) inference), a 31.5× speedup. These results show that port-state awareness combined with learned, controller-local policies can substantially reduce the decision-to-action latency of FRR, providing a practical path toward low-latency failure recovery in SDN migration scenarios.
Full article
(This article belongs to the Special Issue Recent Advances in Software-Defined Networking (SDN))
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Open AccessArticle
HERMES: Metric-Driven Multi-Transport Routing for Civilian Messaging During Connectivity Disruption
by
Charbel El Gemayel, Joseph El Gemayel and Joseph Constantin
Network 2026, 6(3), 64; https://doi.org/10.3390/network6030064 - 6 Aug 2026
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Civilian communication systems often fail during armed conflicts, political unrest, and large-scale Internet disruptions—precisely when reliable communication is most needed. This paper presents HERMES, a resilient hybrid communication architecture that integrates HTTP/IP networking, Bluetooth Low Energy (BLE) mesh communication, and Delay-Tolerant Networking (DTN)
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Civilian communication systems often fail during armed conflicts, political unrest, and large-scale Internet disruptions—precisely when reliable communication is most needed. This paper presents HERMES, a resilient hybrid communication architecture that integrates HTTP/IP networking, Bluetooth Low Energy (BLE) mesh communication, and Delay-Tolerant Networking (DTN) within a unified adaptive routing framework. Unlike conventional approaches that treat alternative transports as backup solutions, HERMES dynamically selects the most efficient transport path based on current network conditions using a transport-aware forwarding policy whose cost function combines round-trip time, transport preference, and observed link risk. The architecture is built on distributed microservices that support topology discovery, shortest-path routing, and fault-tolerant message delivery. Reliability is enhanced through acknowledgments, bounded retransmissions, duplicate suppression, and graceful degradation mechanisms, while end-to-end authenticated encryption (Noise XX with a Double Ratchet) ensures secure communication across transport changes. A prototype implementation developed in C# on .NET 9 was evaluated on a five-node testbed, and a custom Network Simulator 3 (NS-3) module was used to extend the evaluation to networks of up to 500 nodes, under multiple failure scenarios, including node crashes, network partitioning, and complete Internet outages. Experimental results show that HERMES maintains perfect or near-perfect delivery in static topologies, including during a complete Internet blackout that disables IP-only messaging. Compared with the published Delay-Tolerant Networking protocols Epidemic and PRoPHET at one hundred nodes, HERMES exceeds their delivery ratio in static and failure scenarios and remains within 0.06 of them under pedestrian mobility during blackout, while transmitting roughly 35× fewer bytes– and about 21× fewer even relative to the more bandwidth-efficient MaxProp baseline. Under coordinated drop attacks by adversarial relays, HERMES degrades gracefully where flooding-based baselines collapse. This approach demonstrates that resilient civilian communication can be effectively achieved through metric-driven adaptive multi-transport routing, making it suitable for disaster recovery, contested environments, and connectivity-limited regions.
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Open AccessArticle
Embedding-Based K-Means for Multi-Controller Placement in Software-Defined Networks: A Cross-Scale Empirical Study on Internet Topology Zoo
by
Aymen Chentouf, Zouhair Chiba and Mounia Miyara
Network 2026, 6(3), 63; https://doi.org/10.3390/network6030063 - 6 Aug 2026
Abstract
Multi-controller deployments in Software-Defined Networking require choosing both the number of controllers and their placement on the topology. Clustering-based methods, particularly k-means, are widely used for this problem, but the topology representation that the clustering operates on is rarely chosen explicitly. We treat
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Multi-controller deployments in Software-Defined Networking require choosing both the number of controllers and their placement on the topology. Clustering-based methods, particularly k-means, are widely used for this problem, but the topology representation that the clustering operates on is rarely chosen explicitly. We treat the representation step as a design axis: the clustering algorithm is held fixed at k-means with k-means++ initialisation, and the input is varied across three classical, training-free embeddings of the propagation-delay distance matrix: metric multidimensional scaling (MDS), Isomap, and Laplacian Eigenmaps (Spectral). The evaluation covers thirteen Internet Topology Zoo backbones grouped into three scale tiers under an effective-N definition, with the controller count K varied from 2 to 10, and reports node-to-controller latency (N2C), controller-to-controller latency (C2C), and load imbalance jointly rather than singly, with paired significance tests over ten distinct seeds. The representation choice is consequential: 60% of pairwise embedding comparisons are statistically separated (Holm-corrected Wilcoxon, ), and the median best-versus-worst gap per configuration is 23–25% on the two latency metrics and 71% on load imbalance. Metric MDS achieves the lowest N2C in most regimes; Spectral achieves the lowest C2C on the medium and large tiers at mid-to-high K; Isomap trades single-metric wins for worst-case robustness and is non-dominated in 79% of the 63 large-tier configurations. Across all 117 configurations, each embedding is empirically non-dominated (within the embeddings compared and on this benchmark) in 67–85% of configurations, and 16% admit a single statistically separated best choice. Two baselines contextualise these results: k-means on the raw latency matrix leads in under 8% of configurations, and a Node2Vec baseline is competitive on C2C and load balance but trails the classical methods on N2C at one to two orders of magnitude higher embedding cost. Best-embedding identities transfer from k-means to a k-medoids variant in 70% of configurations. Capacity-, energy-, and reliability-aware extensions remain open.
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(This article belongs to the Special Issue Recent Advances in Software-Defined Networking (SDN))
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Lightweight Rescaled Range R/S-Based Real-Time DDoS Detection for Software-Defined Networks
by
Mohamad Khattar Awad, Ghazal Alsholi, Haniah Altabaa, Dania Hani Abu Daqar, Shahad Alshaher and Hamed M. K. Alazemi
Network 2026, 6(3), 62; https://doi.org/10.3390/network6030062 - 5 Aug 2026
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Software-defined Networking (SDN) is a promising networking architecture that separates the control and data planes to allow flexible network management. However, the SDN architecture makes networks vulnerable to various security threats, such as Distributed Denial-of-Service (DDoS) attacks. A DDoS attack is one of
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Software-defined Networking (SDN) is a promising networking architecture that separates the control and data planes to allow flexible network management. However, the SDN architecture makes networks vulnerable to various security threats, such as Distributed Denial-of-Service (DDoS) attacks. A DDoS attack is one of the most common SDN threats, aiming to exhaust a network’s computational and bandwidth resources. Self-similarity is a statistical property of time series in which data patterns repeat at different time scales. Several studies have shown that network traffic exhibits increased self-similarity during DDoS attacks, making it a promising tool for DDoS detection. Despite the effectiveness of statistical methods for detecting DDoS, some methods, such as self-similarity, are discarded due to their high computational cost, leading to detection delays. This paper proposes a lightweight Rescaled Range ( )-based scheme for effective real-time DDoS attack detection in SDN. The scheme employs the Welford online algorithm to compute statistical parameters of the scheme. Experimental results demonstrate that the proposed scheme efficiently captures changes in self-similarity and detects TCP/UDP DDoS attacks in real time. Moreover, it achieves high detection performance compared to other methods, with a False Positive Rate (FPR) below 0.5% and an average computation time of 0.047 ms.
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Open AccessArticle
Two-Stage BER-Surrogate-Based Resource Allocation for Uplink SCMA in IoT Networks
by
Bin Bai, Gang Xie and Yuanan Liu
Network 2026, 6(3), 61; https://doi.org/10.3390/network6030061 - 3 Aug 2026
Abstract
This paper develops a reliability-oriented resource-allocation framework for a single-cell uplink sparse code multiple access (SCMA) system with fixed low-projection codebook (LPCB) constellation components. Link-level SCMA–message-passing-algorithm (MPA) samples calibrate a compact bit-error-rate (BER) surrogate, enabling repeated candidate evaluation without embedding MPA decoding in
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This paper develops a reliability-oriented resource-allocation framework for a single-cell uplink sparse code multiple access (SCMA) system with fixed low-projection codebook (LPCB) constellation components. Link-level SCMA–message-passing-algorithm (MPA) samples calibrate a compact bit-error-rate (BER) surrogate, enabling repeated candidate evaluation without embedding MPA decoding in the search loop. The proposed two-stage method combines a subcarrier allocation whale optimization algorithm (SAWOA), equipped with stochastic binary mapping and exact degree-feasibility repair, with an exact Karush–Kuhn–Tucker (KKT) active-set power allocator. For the , setting, exact enumeration over all 210 main conditions shows that the SAWOA attains the enumerated equal-power oracle objective within relative tolerance in every case. Across 30 paired channel/optimizer blocks, each aggregating the seven power points, the SAWOA reduces the initial-gap-normalized convergence area under the curve by 47.5% relative to the Standard Binary WOA (Holm-adjusted ); its oracle-hit rate by iteration 20 is 93.3% versus 75.7%, while no significant AUC difference is detected relative to particle swarm optimization. After 100 iterations, the three population methods approach the same oracle plateau, whereas random is significantly worse at the midpoint ( ). Exact KKT refinement improves every recorded SAWOA solution and reduces the equal-power surrogate by 3.64–56.27% on average across the sweep, with a maximum relative KKT residual of . A single-point direct Rayleigh SCMA–MPA check confirms the executable transfer of the selected allocation and returns the same decoded BER for the SAWOA and Standard Binary WOA; it remains a bounded transfer sanity check. The results demonstrate finite-budget stage-1 search efficiency, reliable feasible support recovery, and effective exact power refinement for the investigated quasi-static configuration.
Full article
(This article belongs to the Special Issue Recent Advances in Wireless Sensor Networks and Mobile Edge Computing)
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Open AccessArticle
ARP Optimization in SDN Using Controller-Independent Strategies for Data Center Networks
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Jose Neftali Limon-Ortiz, Pedro David Arjona-Villicaña, Alejandra Guadalupe Silva-Trujillo, Francisco Javier Torres-Reyes and Francisco Javier Ramirez-Aguilera
Network 2026, 6(3), 60; https://doi.org/10.3390/network6030060 - 3 Aug 2026
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Data Centers that implement Software-Defined Networks (SDN) are not required to employ the Address Resolution Protocol (ARP), but network hosts do. Therefore, there is a need to support this protocol without modifying the intrinsic functionality of the SDN controller. In this work, four
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Data Centers that implement Software-Defined Networks (SDN) are not required to employ the Address Resolution Protocol (ARP), but network hosts do. Therefore, there is a need to support this protocol without modifying the intrinsic functionality of the SDN controller. In this work, four strategies for handling ARP are evaluated using an SDN and OpenFlow rules. The strategies include disabling ARP at the host level, using static MAC addresses, introducing a fake gateway, and generating ARP replies using OpenFlow flows. To our knowledge, nobody has tested and compared the main characteristics and advantages offered by these four strategies. Experimental evaluation was conducted on a real SDN network and complemented with similar experiments using Mininet. Performance was assessed using metrics such as ping response time, address resolution response time, jitter, and packet loss ratio. The results show that OpenFlow-based ARP replies provide a good balance in terms of scalability, performance, and configuration effort. This strategy achieved the lowest average ping response time (0.641 ms) and ARP response time (0.6188 ms), while avoiding the manual configuration requirements of static approaches.
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Open AccessArticle
Towards Fully AI-Driven Converged Optical Burst Switching and Elastic Optical Networks for Autonomous QoS-Aware IoT Backhaul in 6G and Beyond
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Xaba Mondli and Bakhe Nleya
Network 2026, 6(3), 59; https://doi.org/10.3390/network6030059 - 3 Aug 2026
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The convergence of optical burst switching (OBS) and elastic optical networks (EON) offers a promising pathway for 6G IoT backhaul. However, existing solutions treat OBS and EON separately and rely on heuristic resource allocation that fails to meet stringent QoS demands. This paper
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The convergence of optical burst switching (OBS) and elastic optical networks (EON) offers a promising pathway for 6G IoT backhaul. However, existing solutions treat OBS and EON separately and rely on heuristic resource allocation that fails to meet stringent QoS demands. This paper proposes a fully AI-driven converged OBS/EON architecture integrating a hybrid switching fabric, a multi-agent deep reinforcement learning (DRL) orchestrator, and a federated learning (FL) plane for autonomous, QoS-aware resource provisioning. The control plane implements multi-agent Proximal Policy Optimization (PPO) for joint burst scheduling, routing, modulation selection, and spectrum allocation. The orchestration plane employs q-fair FL for privacy-preserving cross-domain traffic prediction. Mathematical formulations of the optimization problem with spectrum, GSNR, and delay constraints are provided, along with pseudo-algorithms. Simulations over a 14-node NSFNET topology demonstrate a 78% reduction in blocking probability, a 42% improvement in spectral efficiency, sub-millisecond URLLC delays, and a Jain’s fairness index of 0.92, while preserving data privacy. The framework builds upon SDN principles for seamless integration with optical transport infrastructures.
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Open AccessArticle
Enhancing Vehicular Ad Hoc Networks Routing via SDN-Based Traffic Engineering with MPLS and Segment Routing
by
Ronild Hako, Evjola Spaho and Andres Annuk
Network 2026, 6(3), 58; https://doi.org/10.3390/network6030058 - 1 Aug 2026
Abstract
Vehicular Ad Hoc Networks (VANETs) are essential components of Intelligent Transportation Systems (ITS), allowing communication exchanges between vehicles and road infrastructure elements. These networks face challenges from vehicular mobility, including frequent topology changes, link instability, and variable wireless channel quality. This paper presents
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Vehicular Ad Hoc Networks (VANETs) are essential components of Intelligent Transportation Systems (ITS), allowing communication exchanges between vehicles and road infrastructure elements. These networks face challenges from vehicular mobility, including frequent topology changes, link instability, and variable wireless channel quality. This paper presents an extensive evaluation of Software-Defined Networking (SDN) integrated with two traffic engineering technologies, Multi-Protocol Label Switching (MPLS) and Segment Routing (SR), applied to the AODV and OLSR routing protocols. Nine incremental configurations are evaluated for each protocol, ranging from the default protocol through MPLS-enhanced forwarding, SDN-based centralized optimization, combined SDN-MPLS and SDN-SR integration, to advanced configurations using distance-based IS-IS weighted topology metrics with both Fixed and Adaptive metric computation approaches. Two distinct SDN topology construction methods are compared: a Protocol-based approach that uses routing table entries with equal hop-count metrics, and a distance-based approach using IS-IS weighted metrics. The simulation uses a realistic urban topology with 50 vehicles and 5 RSUs, evaluated across several traffic patterns, representing different application types. Results demonstrate that SR with distance-based IS-IS metrics achieves the highest Packet Delivery Ratio (PDR) and lowest delay by leveraging RSU infrastructure as reliable forwarding relays. Moreover, the proposed SDN-SR framework reduces routing overhead and control-plane signaling, improving network resource utilization and thereby indicating its potential to enhance the energy efficiency of vehicular communication infrastructures.
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(This article belongs to the Special Issue Emerging Trends and Applications in Vehicular Ad Hoc Networks)
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Open AccessFeature PaperArticle
ICT Infrastructure for Sustainable Mobility: The Lessons Learned from the MOST Spoke 5 Project
by
Salvatore Dello Iacono, Chiara Franzoni, Paolo Bellagente, Alessandra Flammini and Emiliano Sisinni
Network 2026, 6(3), 57; https://doi.org/10.3390/network6030057 - 22 Jul 2026
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Smart and sustainable mobility increasingly relies on distributed sensing, low-power communication technologies, and cloud-based ICT platforms. This article presents a comprehensive scientific analysis of the technological foundations of sensitized mobility, reviewing the state of the art in embedded sensing, distributed systems, and communication
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Smart and sustainable mobility increasingly relies on distributed sensing, low-power communication technologies, and cloud-based ICT platforms. This article presents a comprehensive scientific analysis of the technological foundations of sensitized mobility, reviewing the state of the art in embedded sensing, distributed systems, and communication paradigms for future mobility challenges. The research project “MOST” and in particular its subgroup “Spoke 5” falls within this framework of sustainable and sensorized mobility, with numerous activities in data collection, analysis, and field experimentation. In order to allow data collection, retention and analysis, one of the challenges that we must address is the definition of an adequate ICT architecture. The core contribution of this work is the presentation of the MOST ICT architecture, designed as a containerized, scalable, and resilient infrastructure capable of integrating heterogeneous data coming from field-deployed systems. In addition, it discusses the primary research challenges encountered in the definition and development of the presented architecture by examining two representative case studies within the MOST-Spoke 5 research project: renewable energy charging stations for light electric vehicles and cyclists monitoring systems.
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Open AccessFeature PaperArticle
A Requirement-Driven Expert System for Blockchain Consensus Mechanism Selection
by
Ivica Lukić, Nikola Ramčić, Ivan Ivković and Miljenko Švarcmajer
Network 2026, 6(3), 56; https://doi.org/10.3390/network6030056 - 22 Jul 2026
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Blockchain technology has introduced a rapidly expanding range of consensus mechanisms, each designed to satisfy different operational requirements related to security, scalability, decentralization, transaction throughput, and energy efficiency. Selecting an appropriate consensus mechanism has consequently become a complex multi-criteria decision problem, particularly for
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Blockchain technology has introduced a rapidly expanding range of consensus mechanisms, each designed to satisfy different operational requirements related to security, scalability, decentralization, transaction throughput, and energy efficiency. Selecting an appropriate consensus mechanism has consequently become a complex multi-criteria decision problem, particularly for developers and organizations without extensive expertise in distributed systems and blockchain architectures. Existing tools primarily address protocol benchmarking and static documentation, leaving the decision-support dimension largely unaddressed. This paper presents a web-based expert system designed to support the selection of blockchain consensus mechanisms according to specific user-defined operational requirements. The proposed solution was implemented using the MERN technology stack, consisting of MongoDB, Express.js, React, and Node.js, enabling a modular and scalable architecture suitable for future expansion and maintenance. The recommendation process is based on a two-phase filtering and scoring algorithm. In the first phase, mechanisms incompatible with mandatory user-defined constraints, including network type and key resource type, are systematically eliminated. In the second phase, the remaining mechanisms are ranked using attribute matching across criteria encompassing energy efficiency, scalability, security, decentralization, and transaction speed. The system returns the three most suitable consensus mechanisms for the given operational scenario together with their key characteristics. In addition to recommendation functionality, the application supports user authentication, recommendation history management, and administrative maintenance of the consensus mechanism database, which currently contains 38 distinct blockchain consensus protocols. Experimental evaluation through twelve representative usage scenarios demonstrated that the system consistently produces contextually relevant recommendations aligned with user-specified requirements. A comparative analysis with existing tools confirms that the proposed system occupies a distinct decision-support role currently absent from the available tooling landscape. A comparative analysis against four representative existing tools indicates that the proposed system combines a set of decision-support capabilities not jointly offered by any one of them. The presented approach contributes a transparent and extensible decision-support framework intended to simplify architectural planning and management of blockchain-based distributed systems.
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Open AccessArticle
A Dual-Model Framework for Detecting IPv4 Fragmentation-Consistent Traffic Patterns in Flow-Level Datasets
by
Maksim Iavich and Vladimer Svanadze
Network 2026, 6(3), 55; https://doi.org/10.3390/network6030055 - 16 Jul 2026
Abstract
IPv4 fragmentation attacks, including tiny fragment injection, teardrop offset manipulation, and fragment flooding exploit the RFC 791 reassembly process to evade firewalls and network intrusion detection systems (NIDSs). Detection is challenging because widely used flow-level datasets (UNSW-NB15, CIC-IDS2017), lack the packet-level fragment header
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IPv4 fragmentation attacks, including tiny fragment injection, teardrop offset manipulation, and fragment flooding exploit the RFC 791 reassembly process to evade firewalls and network intrusion detection systems (NIDSs). Detection is challenging because widely used flow-level datasets (UNSW-NB15, CIC-IDS2017), lack the packet-level fragment header information required for direct RFC 791 validation. This study investigates whether fragmentation-related traffic can be identified using only flow-level statistical features. The proposed framework introduces four contributions: (1) a direction-corrected proxy labeling scheme, where flows are labeled as fragmented when < 0.70, validated on a controlled 3000-flow Scapy dataset with = 0.873 and ROC-AUC = 0.895 against verified packet-level ground truth; (2) a dual-model Random Forest architecture with feature separation to prevent circular self-prediction; (3) RFC 791-inspired statistical heuristics applied as a post-inference filter; and (4) a six-configuration ablation study with a reproducible protocol. The study distinguishes fragmentation-like statistical signatures from confirmed packet-level fragmentation. The benchmark model achieves ≈ 0.998 on synthetic data, while external PCAP validation yields = 0.873. Unlike most flow-level NIDS research, the framework is validated against both controlled Scapy-generated traffic and the MAWI real-world backbone trace, establishing a practical performance bound ( = 0.82 for the full hybrid framework). The attack classification model achieves = 0.974 on dataset-provided labels. Results show that flow-level analysis can provide useful indicators of fragmentation-related activity when packet-level evidence is unavailable, while highlighting the limitations of statistical detection.
Full article
Open AccessArticle
Key Value Indicators for Sustainable AI-Based Communication Networks: Are They Adequate?
by
Lucia Pintor, Marco Garau, Virginia Pilloni and Luigi Atzori
Network 2026, 6(3), 54; https://doi.org/10.3390/network6030054 - 16 Jul 2026
Abstract
As climate and societal challenges intensify, achieving sustainable development requires a holistic approach that balances economic growth with environmental preservation and social equity. The United Nations’ 2030 Agenda outlines 17 Sustainable Development Goals with corresponding global indicators. However, adapting these high-level goals to
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As climate and societal challenges intensify, achieving sustainable development requires a holistic approach that balances economic growth with environmental preservation and social equity. The United Nations’ 2030 Agenda outlines 17 Sustainable Development Goals with corresponding global indicators. However, adapting these high-level goals to the specific context of telecommunications networks, which are more and more governed by AI-based components, presents major challenges. This paper proposes an extensive framework for assessing the adequacy of Key Value Indicators, used to evaluate the Key Values brought by network services and applications. The framework encompasses the phases of indicator elicitation, analysis, technical realization, and assessment. Applying this framework ensures that Key Value Indicators remain relevant, actionable, and pertinent to the objectives throughout the system’s evolution. Case studies from leading projects in the telecommunications sector illustrate how the proposed methodology effectively identifies deficiencies and helps refine the framework.
Full article
(This article belongs to the Special Issue Toward Net-Zero Networks: Energy-Aware Protocols and Systems for the Future Internet)
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Open AccessArticle
Machine Learning Framework for Detecting False Alerts in Safety Messages
by
Avinash Karhana, Ikjot Saini and Arunita Jaekel
Network 2026, 6(3), 53; https://doi.org/10.3390/network6030053 - 14 Jul 2026
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The recent advances in Vehicular Ad Hoc Networks (VANETs) can have a tremendous positive impact on vehicle safety and traffic flow. In VANETs, vehicles communicate wirelessly with each other and with roadside infrastructure nodes to improve awareness of neighboring vehicles and traffic conditions.
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The recent advances in Vehicular Ad Hoc Networks (VANETs) can have a tremendous positive impact on vehicle safety and traffic flow. In VANETs, vehicles communicate wirelessly with each other and with roadside infrastructure nodes to improve awareness of neighboring vehicles and traffic conditions. However, such communication also increases the potential for various safety and security challenges, such as the threat of false reporting attacks. In these attacks, malicious or compromised nodes inject alert notifications that report fictitious traffic incidents that may trigger unnecessary evasive actions and increase the risk of collisions. This research addresses false alert attacks in VANETs by developing a machine learning-based detection framework that leverages innovative feature engineering and model assessment strategies. The proposed framework designs new features that capture vehicle kinematics to improve the detection of malicious alerts. The performance of multiple ML models is then analyzed in terms of both detection effectiveness and computational requirements to determine their suitability for different deployment scenarios. Our simulation results demonstrate that the proposed framework can achieve significant improvements compared to existing techniques for false alert detection. In addition, the study highlights the critical role of feature engineering in improving detection performance.
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Open AccessArticle
Performance Analysis of Sigmoid-Enhanced OSPF for Risk-Aware Adaptive Routing in Secure Networks
by
Chakadkit Thaenchaikun and Komsan Kanjanasit
Network 2026, 6(3), 52; https://doi.org/10.3390/network6030052 - 10 Jul 2026
Abstract
Modern communication networks require routing protocols that can adapt to dynamic traffic conditions while accounting for topology-based structural risk. Conventional open shortest path first (OSPF) relies on static or linear link cost metrics, which are often inadequate for capturing the nonlinear behavior of
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Modern communication networks require routing protocols that can adapt to dynamic traffic conditions while accounting for topology-based structural risk. Conventional open shortest path first (OSPF) relies on static or linear link cost metrics, which are often inadequate for capturing the nonlinear behavior of network dynamics and structural risk. This paper proposes sigmoid-enhanced OSPF (SE-OSPF), which integrates topology-based structural risk into the OSPF routing metric through a nonlinear sigmoid function. The proposed framework employs two configurable sigmoid parameters, the midpoint ( ) and the steepness (k), to provide smooth cost transitions and adaptive routing decisions under varying network conditions. Simulation results on a Barabási–Albert scale-free topology demonstrate that SE-OSPF reduces the average end-to-end delay by 19.7% and packet jitter by 8.6% compared with Standard OSPF. In addition, SE-OSPF increases the average number of successfully delivered packets by up to 16.6% compared with Linear-OSPF while reducing maximum link utilization (MLU), indicating more balanced traffic distribution, improved load balancing, and reduced congestion. These results demonstrate that the proposed sigmoid-based routing metric effectively balances routing efficiency, packet delivery reliability, and network load distribution, establishing SE-OSPF as an effective framework for topology-based structural risk-aware adaptive routing in modern communication networks.
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(This article belongs to the Special Issue Recent Advances in Network Security)
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Open AccessArticle
Adaptive Scheduling Optimization for Isogeny Mapping in SQIsign Based on Lightweight Learning to Rank
by
Xinyi Zhuang, Shiyang He and Yuxin Zhang
Network 2026, 6(3), 51; https://doi.org/10.3390/network6030051 - 7 Jul 2026
Abstract
The post-quantum signature scheme SQIsign achieves extremely compact public keys and signatures, making it attractive for bandwidth-constrained environments. However, its signing efficiency is limited by the high random failure rate of the ideal-to-isogeny mapping procedure and the substantial cost of each retry. Existing
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The post-quantum signature scheme SQIsign achieves extremely compact public keys and signatures, making it attractive for bandwidth-constrained environments. However, its signing efficiency is limited by the high random failure rate of the ideal-to-isogeny mapping procedure and the substantial cost of each retry. Existing optimizations mainly reduce the number or cost of isogeny computations, while overlooking how to schedule commitment retries when multiple candidate ideals are available. We formulate commitment-stage scheduling as a lightweight learning-to-rank problem and provide an instrumented scheduling framework for SQIsign signing only. The pipeline uses two features, trains a weighted logistic regression scorer offline by maximum likelihood with class weighting, and deploys the same scorer online in Rank-ML mode. Live instrumentation on Apple M2 (n = 20,000 candidate attempts at NIST-I) quantifies the commitment bottleneck (86.4% failure; 7.36 mean attempts per session) and shows constant features at a fixed commitment degree (live AUC ). Synthetic training supports the scorer when feature variance is present (test AUC ). A remeasured four-way ablation with Batch-only control ( , seed 42) separates batch overhead from learned ordering: Rank-ML is indistinguishable from Batch-only at deployment, while Baseline remains fastest for its wall-clock signing time at batch size 10. These results clarify when lightweight ML scheduling applies in SQIsign and provide a reproducible evaluation template separating live, synthetic, remeasured, and proxy evidence.
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(This article belongs to the Special Issue Advances in AI-Powered Cybersecurity)
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Open AccessArticle
Federated Learning over 5G/6G Networks: Dynamic Client Selection and Resource Allocation for Heterogeneous Edge Environments
by
Ahmed Lateef Salih Al-Karawi and Rafet Akdeniz
Network 2026, 6(3), 50; https://doi.org/10.3390/network6030050 - 6 Jul 2026
Abstract
Federated learning (FL) has emerged as a promising paradigm for privacy-preserving edge intelligence because it enables geographically distributed devices to collaboratively train a shared model without transferring raw data to a central cloud. This capability is particularly valuable for 5G and emerging 6G
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Federated learning (FL) has emerged as a promising paradigm for privacy-preserving edge intelligence because it enables geographically distributed devices to collaboratively train a shared model without transferring raw data to a central cloud. This capability is particularly valuable for 5G and emerging 6G networks, where edge-native services are required to satisfy stringent latency, bandwidth, and privacy constraints while operating on highly heterogeneous devices and time-varying wireless channels. In practice, however, synchronous FL is often constrained by straggling clients with limited computation capability or unfavorable communication conditions, which increases round latency and reduces overall resource efficiency. To address this challenge, this study develops a rigorously structured framework for dynamic client selection and radio resource allocation in heterogeneous wireless edge environments. Each FL round is formulated as a latency-aware scheduling problem that jointly captures local computation time, uplink transmission time, minimum participation constraints, and resource block assignment. On this basis, we propose a Dynamic Client Selection and Resource Allocation (DCS-RA) method that integrates computation-aware, channel-aware, and fairness-aware scoring with greedy resource block allocation guided by marginal completion time reduction. The study further provides a clear methodological structure, workflow visualization, literature-grounded justification, dataset documentation, and uncertainty-aware result reporting. Under the reported simulation setting with 100 clients and 20 resource blocks, DCS-RA reduces the average round completion time from 1.92 s to 1.55 s on MNIST and from 2.02 s to 1.57 s on CIFAR-10, corresponding to improvements of 19.39% and 22.47%, respectively. Standard deviation reductions of 70.59% and 80.77% further indicate improved round-to-round stability and more reliable training behavior. These results support the central conclusion that lightweight joint scheduling can materially improve wall-clock FL efficiency in heterogeneous 5G/6G edge networks.
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(This article belongs to the Special Issue 5G and Next-Generation Communication Technologies)
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Open AccessArticle
Reinforcement Learning for Resource Allocation in Energy-Harvesting Cooperative IoT Networks
by
Olumide Alamu, Thomas O. Olwal and Munguakonkwa Emmanuel Migabo
Network 2026, 6(3), 49; https://doi.org/10.3390/network6030049 - 6 Jul 2026
Abstract
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The internet of things (IoT) has rapidly evolved into a ubiquitous communication paradigm for enabling the deployment of autonomous wireless networks across diverse application domains. However, the limited energy storage capacity and computational resources of IoT devices (IoTDs) pose a serious concern to
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The internet of things (IoT) has rapidly evolved into a ubiquitous communication paradigm for enabling the deployment of autonomous wireless networks across diverse application domains. However, the limited energy storage capacity and computational resources of IoT devices (IoTDs) pose a serious concern to their long-term sustainability and the expected quality of service delivery. Moreover, in the foreseeable era of the internet of everything, centralised network resource management is likely to constrain network scalability. To tackle these challenges in the current and next-generation communication networks, the adoption of adaptive and lightweight computational frameworks coupled with energy-efficient transmission strategies is essential. To demonstrate this, we exploit the concept of cooperative communication and radio frequency-based energy-harvesting to improve the network throughput while maintaining power supply to the IoTDs. Furthermore, to intelligently and autonomously perform resource allocation, we employ the reinforcement learning frameworks, particularly state–action–reward–state–action (SARSA) and Q-learning. Based on key performance evaluation metrics, we compare our findings with the baseline methods, including the equal, random, and greedy power level selection schemes, with SARSA exhibiting the most favourable performance trade-offs.
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Open AccessArticle
ParallelEdge-AI: A Shared-Encoder Framework for Joint Traffic Classification and Latency-Aware Scheduling in Distributed IoT Edge Networks
by
Abdulaziz G. Alanazi, Haifa A. Alanazi and Nasser S. Albalawi
Network 2026, 6(3), 48; https://doi.org/10.3390/network6030048 - 3 Jul 2026
Abstract
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IoT networks now handle traffic from billions of devices, and edge nodes are under constant pressure to classify that traffic and dispatch tasks within tight latency deadlines. Most existing systems treat classification and scheduling as two separate steps that run one after the
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IoT networks now handle traffic from billions of devices, and edge nodes are under constant pressure to classify that traffic and dispatch tasks within tight latency deadlines. Most existing systems treat classification and scheduling as two separate steps that run one after the other. This sequence adds unnecessary delay and breaks the feedback between the two tasks: the scheduler never sees the traffic type, and the classifier never sees the queue state. We propose ParallelEdge-AI, a system built around a shared flow encoder that feeds two task-specific heads in parallel, one for multi-class traffic classification and one for task-urgency scoring. Both heads are trained end-to-end using a joint loss that combines cross-entropy and pairwise ranking. A load-balance controller then reads the urgency scores alongside live queue lengths to decide, every 200 ms, whether a task stays local or moves to a less-loaded edge node. No global synchronisation is needed. We test the system on three real IoT datasets: RT-IoT2022, N-BaIoT, and CICIoT2023. ParallelEdge-AI reaches 97.63% accuracy and an F1-score of 97.34%, which is 3.16 percentage points above the best baseline. Inference latency is 19.62 ms per batch, the deadline-miss rate is 2.34%, and the load-imbalance index is 0.083, all three are the best results in our comparison. These numbers show that running classification and scheduling together on a shared representation is both faster and more accurate than treating them as separate problems.
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