Last updated: 2026-09-27 05:01 UTC
All documents
Number of pages: 174
| Author(s) | Title | Year | Publication | Keywords | ||
|---|---|---|---|---|---|---|
| Serkut Ayvaşık, Alba Jano, Fidan Mehmeti, Wolfgang Kellerer | Sentinel: Vision-Based Signaling-Free SNR Prediction for Proactive 5G Resource Management | 2026 | Early Access | Resource management 5G mobile communication Convolutional neural networks Modeling Signal to noise ratio Feedback Long short term memory 3GPP Measurement Visual systems 5G Radio Resource Management Link Adaptation Deep Learning Computer Vision Environment-Aware Communications Channel Prediction Channel State Information SNR CQI | Reliable and efficient radio resource management in 5G systems critically depends on accurate Channel State Information (CSI) availability at the base stations. Traditionally, base stations perform scheduling, resource allocation, and link adaptation using the Channel Quality Indicator (CQI), either computed directly for uplink or obtained via CSI feedback reports for downlink. Both uplink and downlink procedures rely on frequent pilot and feedback transmissions, introducing significant overhead that challenges scalability and ultra-reliable communication demands. In this work, we introduce Sentinel, a vision-based machine learning system that leverages grayscale image sequences from an indoor environment to predict the SNR between user equipment and base station with a foresight window of 200 ms. Sentinel’s SNR prediction enables flexible CQI acquisition, allowing different SNR-to-CQI mappings without modifying the system, and eliminates the need for CQI-related pilot or feedback signaling. The proposed system is evaluated in a dynamic multi-user scenario comprising three heterogeneous 5QI service profiles across 40 users. Sentinel demonstrates superior CQI prediction performance, achieving substantial to near-perfect agreement with true CQI labels, as measured by the quadratic weighted kappa, and outperforming benchmark foresight-based CQI prediction models in both CQI classification and resource management effectiveness. Proactive resource management evaluations show that Sentinel meets the strict reliability targets of mission-critical 5QI services, achieving packet error rates below 10−4, and approaching 10−5 when integrated with signaling. Furthermore, Sentinel reduces total radio resource usage by up to 24% in the 40-user scenario by eliminating CQI-related signaling overhead. | 10.1109/TNSM.2026.3735937 |
| Siyu Jiang, Feng Guo, Di Chen, Yuan Liu, Ying Chen, Weijun Sun, Yu Wang, Shen Su | Smart Contract Vulnerability Detection via Mask Consistency with Dynamic Margin Adjustment | 2026 | Early Access | Labeling Modeling Smart contracts Signal detection Codes Contracts Learning (artificial intelligence) Training Educational institutions Conferences Smart contract vulnerability detection semi-supervised domain adaptation mask learning dynamic margin adjustment | With the rise of smart contract applications, new attacks that exploit contract vulnerabilities continue to emerge, and effective vulnerability detection methods are urgently needed. Deep learning-based methods have shown excellent performance. However, for new types of vulnerabilities, due to the lack of real labels to help the model learn subtle code differences, previous methods have difficulty distinguishing between vulnerable contracts and safe contracts with similar key code segments, resulting in false negatives. To address this problem, this paper proposes a smart contract vulnerability detection method that uses mask consistency (MC) and dynamic margin adjustment (DMA). Unlike traditional Masked Language Modeling (MLM) in CodeBERT that performs token-level reconstruction for general representation learning, our MC enforces classification-level consistency between a masked student network and an unmasked EMA teacher network at the semantic graph block level under semi-supervised domain adaptation. This enhances the model’s discriminative ability by adding contextual information of similar code segments as additional clues. Specifically, we define a student network to learn masked contracts, a teacher network to learn complete contracts, and implement few-shot learning through semi-supervised domain adaptation. In this process, the student network is helped to learn to correctly distinguish similar contracts by fusing contextual information. In order to guide students more effectively, we use DMA to screen high-quality pseudo-labels. We conduct extensive experiments on open source real-world vulnerability datasets, and the results show that our method significantly outperforms current mainstream deep learning methods in detecting six types of vulnerabilities. This approach also pioneers the application of domain adaptation and integrates MC with DMA in vulnerability detection, providing guidance for detecting different types of vulnerabilities. | 10.1109/TNSM.2026.3733072 |
| Kim Hammar, Neil Dhir, Rolf Stadler | Optimal Defender Strategies for CAGE-2 using Causal Modeling and Tree Search | 2026 | Early Access | Modeling Timing Trees (botanical) Vegetation Weighted sum model Conferences Silicon Games Security Algorithms Cybersecurity network security causal inference SCM APT CAGE-2 POMDP intrusion response | The CAGE-2 challenge is considered a standard benchmark to compare methods for autonomous cyber defense. Current state-of-the-art methods evaluated against this benchmark are based on model-free (offline) deep reinforcement learning techniques, which do not provide provably optimal defender strategies. We address this limitation and present a formal (causal) model of CAGE-2 together with a method that converges to a provably optimal defender strategy, which we call causal partially observable Monte-Carlo planning (C-POMCP). Our method has two novel properties. First, it incorporates the causal structure of the target system through causal relationships among the system variables. This structure allows for a significant reduction of the search space of defender strategies. Second, it is an online method that updates the defender strategy at each time step via tree search. Evaluations against the CAGE-2 benchmark show that C-POMCP achieves state-of-the-art performance with respect to effectiveness and requires two orders of magnitude less computation than the closest competitor method. | 10.1109/TNSM.2026.3735865 |
| José Antonio Pastor Valera, Martin Husák, Jesús García Rodríguez, Jorge Bernal Bernabé, Antonio Skarmeta | Real Time Cyber Situational Awareness for 6G Networks Leveraging Spatial Metrics | 2026 | Early Access | Modeling Timing Fluid flow Security Measurement Topology Real-time systems Monitoring Software IP networks 6G Networks Cyber Situational Awareness Cognitive Security Real-time Analytics Spatial Network Metrics | The dynamic and heterogeneous nature of 6G networks demands continuous, real-time cyber situational awareness (CSA) to support cognitive security operations such as behavior analysis, threat hunting, and adaptive defense. Traditional CSA frameworks like CRUSOE capture structural and mission-level data but cannot process the dynamic, high-frequency telemetry typical of 6G environments. This paper presents the Extended Infrastructure and Service Information Model (EISIM) and its implementation within a Cyber Situational Awareness Platform (CSAP) designed for real-time, context-aware security management. CSAP aggregates and models data from diverse sources into a unified graph representing assets, flows, services, and vulnerabilities, enabling continuous assessment of operational and security posture. The platform introduces novel spatial risk metrics, including Flow Load Centrality and Operational Risk Centrality, which integrate topological position, traffic intensity, vulnerability exposure, and resource capacity to quantify risk, exposure, and criticality. By combining workflow-driven data collection with real-time spatial analytics, CSAP enhances situational awareness and decision-making within 6G Security Operation Centers (6G-SOCs), enabling proactive identification of critical network elements and improved resilience through cognitive, data-driven management. | 10.1109/TNSM.2026.3734629 |
| Ahmed Rjiba, Hicham Lakhlef, Joachim Bruneau-Queyreix, Meriem Afif | Federated Learning in Fog Computing within IoT Environments: An up-to-date and comprehensive survey | 2026 | Early Access | Federated learning Internet of Things Edge computing Modeling Clouds Security Training Surveys Privacy Timing Internet of Things (IoT) Federated Learning (FL) Fog Computing (FC) Survey Digital Twin (DT) | The Internet of Things (IoT) connects diverse, resource-constrained devices, driving innovation in domains such as healthcare, smart cities, and industrial automation. However, the exponential growth of IoT devices poses critical challenges in data processing, privacy, security, and latency. Fog Computing (FC) mitigates these issues by decentralizing computational resources, processing and storing data locally to enable low-latency, high-quality services. This makes FC an ideal platform for integrating Federated Learning (FL), a decentralized machine learning paradigm that trains models locally on IoT devices and shares only aggregated updates, preserving data privacy. Since its introduction, FL has garnered considerable attention for enabling privacy-preserving collaborative model training in distributed environments. The convergence of IoT, FC, and FL offers substantial opportunities to advance IoT system performance, but it also presents challenges in resource allocation, security, energy efficiency, computational complexity, and system heterogeneity. This survey provides a comprehensive and up-to-date analysis of the integration of FL and FC within IoT environments, exploring their synergies, challenges, and state-of-the-art advancements.We review critical aspects, including infrastructure enhancements, security mechanisms, and the emerging role of Digital Twin (DT) technology, which creates virtual replicas of IoT devices to optimize system efficiency and real-time performance. Through case studies in healthcare and smart cities, we highlight practical applications of FL-FC integration. We compare our work with existing surveys, highlight its specific focus on the FL-FC-IoT-DT convergence, and identify open challenges and future research directions toward secure, scalable, and intelligent IoT ecosystems. | 10.1109/TNSM.2026.3731410 |
| Franck Messaoudi, Luhan Wang, Abdelkader Mekrache, Adlen Ksentini, Bingxuan Li, Jialei Su, Sofiane Messaoudi, Salim El Ghalbzouri | The Brewing Storm in 5G’s Data Plane: Design and Evaluation of a High-Performance eBPF/XDP-Based User Plane Function | 2026 | Early Access | Quality of service Fluid flow Kernel Information rates Throughput Planing 5G mobile communication Linux Filtering Filters 5 th Generation Mobile Networks (5G) User Plane Function (UPF) QoS Enforcement Rule (QER) Quality of Service (QoS) extended Berkeley Packet Filter (eBPF) eXpress Data Path (XDP) Traffic Control (tc) Queuing Discipline (qdisc) | This paper presents the design and implementation of a novel 5G UPF leveraging eBPF technology to meet the stringent performance and programmability requirements of emerging 6G systems. Traditional UPF implementations often struggle to balance performance, flexibility, and resource efficiency-challenges particularly critical in CPU- and I/O-constrained edge environments. The proposed eBPF-based UPF architecture mitigates these limitations by embedding core functionalities, such as packet classification, forwarding, and QoS enforcement, directly within the Linux kernel via eBPF programs attached through XDP and tc hook points. Performance evaluation using TRex demonstrates that the proposed solution achieves competitive throughput, low packet loss, and efficient CPU utilization across traffic profiles. Moreover, it maintains full compliance with 5G Core Network standards. Comparative analysis with well-established open-source UPF implementations further underscores its advantages. This work highlights the potential of eBPF as a foundational technology for building next-generation, programmable UPFs optimized for edge cloud deployments in the 6G era. | 10.1109/TNSM.2026.3720812 |
| Vinícius Gruske Domeles, Laura Rodrigues Soares, Jéferson Campos Nobre, Edison Pignaton De Freitas | An Energy Cost-Benefit Analysis of Client-Side VPNs on CPE Devices | 2026 | Early Access | Energy Licenses Nuclear facility regulation Protocols Virtual private networks Costing Costs Energy consumption Loading Measurement Energy Efficiency VPN Protocols Customer-Premises Equipment Network Security | The reduction of CO2 emissions and conscientious use of energy resources is one of the biggest current challenges. Computer networks and the Internet are no exception to the global necessity of reassessing current energy consumption paradigms, and security mechanisms are some of the most costly in the networking stack. In the other hand, Customer-Premises Equipment (CPE) devices at the edge of the Internet structure play a significant role in service provisioning and securing the connection of the customer. As such, the impact of standard security tools on the energy consumption profile of these devices should be studied in depth. In this context, this work evaluates the energy cost-benefit of client-side Virtual Private Networks (VPNs) implemented on commercial CPE devices. Through experimental measurement and precise instrumentation, both energy consumption and network performance across different traffic profiles are analyzed. The main finding is that the use of VPNs can reduce the energy efficiency of the CPE per megabyte transferred by half, even under moderate load, highlighting a significant energy overhead imposed by security mechanisms on edge devices. Furthermore, the study shows that the most suitable protocol depends directly on scenario-specific requirements. Finally, the study proposes comparative metrics, a device-protocol calibrated model and presents the future directions for assessing the energy impact of Software-Defined Wide Area Network (SD-WAN) architectures. | 10.1109/TNSM.2026.3733609 |
| Bita Fatemipour, Zhe Zhang, Marc St-Hilaire | Adaptive Routing Optimization with Cost and Deadline Awareness Using Hierarchical Deep Reinforcement Learning | 2026 | Early Access | Costing Costs Routing Optimization Graph neural networks Timing Topology Joining processes Training Learning (artificial intelligence) Deep Reinforcement Learning Graph Neural Networks Optimization Traffic Engineering Wide-Area Networks Hierarchical RL Adaptive Routing | Timely and cost-efficient data transfers in large-scale networks remain challenging due to diverse topologies, non-uniform pricing models, and variable traffic demands. Existing literature often relies on multi-objective optimization, employing heuristic methods to reduce computational complexity; however, these approaches typically assume stable or predictable demand and struggle to scale effectively. Reinforcement Learning (RL) has been explored for its adaptability, yet many RL-based methods remain single-objective or topology-agnostic. This paper introduces CD-DRL, a hierarchical Deep RL framework that jointly optimizes transmission cost and deadline satisfaction, two objectives that often conflict in large-scale networks, through two cooperative agents. A routing agent, built on a Graph Neural Network, selects paths over a structured, multi-binary action space, enabling topology-aware routing across varying network scales and demand patterns. An adaptive tuning agent observes network state and recent performance to dynamically adjust the cost-deadline tradeoff to best fit current conditions. This hierarchical design allows CD-DRL to respond to dynamic network events such as congestion and bandwidth fluctuations, where no single fixed tradeoff remains optimal. We validate CD-DRL through extensive experiments on diverse backbone topologies and request distributions under static and time-varying network conditions. Compared with a state-of-the-art GNN-based RL method and traditional heuristics, CD-DRL improves the deadline-met ratio by up to 25% while maintaining competitive total cost and demonstrating strong scalability. Additionally, CD-DRL achieves faster execution time than mathematical optimization baselines, enabling high-throughput, latency-sensitive routing in dynamic environments. | 10.1109/TNSM.2026.3731031 |
| Larisa-Mihaela Tufeanu, Marius-Constantin Vochin, Frank Y. Li | Residual Artifact Governance With ML-Enabled Garbage Collection Prediction in Kubernetes-Based 5G/6G Service-Based Architecture | 2026 | Early Access | Management Retrieval augmented generation Monitoring 5G mobile communication Modules (abstract algebra) Evolution (biology) Modeling Architecture Computer architecture 3GPP 5G/6G service-based architecture Kubernetes residual artifact governance ML-enabled garbage collection prediction implementation and experiments | The evolution of the service-based architecture (SBA) requires cloud-native core networks, and its open and modular design nature makes Kubernetes the most eminent platform for SBA implementation. One critical-yet-underexplored issue when deploying the SBA based on Kubernetes is the accumulation of residual artifacts that persist and degrade observability and stability inside Kubernetes clusters. In this paper, we propose residual artifact governance (RAG), a non-intrusive add-on module to the SBA that enforces bounded garbage collection (GC) policies without modifying the underlying architecture. The module follows a master–agent structure: a GC-master derives data-driven machine learning-enabled cleanup policies using the GC data provided by GC-agents, while GC-agents co-located at each network function execute deterministic, auditable cleanup actions. As a proof-of-concept demonstration, we implement a Kubernetes-based prototype to validate the operability and feasibility of RAG. While a machine learning predictor located at the GC-master provides early warning signals on time-to-collapse caused by the accumulation of residual artifacts, periodic fractional cleanup actions at GC-agents keep residual peaks bounded under both nominal and stress leak regimes. Results reveal that the accumulation of residual artifacts can be measured, predicted, and controlled using Kubernetes-native mechanisms through our RAG enhancement while remaining compatible with 3GPP-aligned observability and stability assurance principles. | 10.1109/TNSM.2026.3734448 |
| Hussein Fawaz, Jacopo Talpini, Marco Savi, Silvia Giordano, Omran Ayoub | Detecting Zero-Day Attacks via Reconstruction of Feature Influence and Model Uncertainty | 2026 | Early Access | Modeling Uncertainty Training Internet of Things Poles and zeros Radio frequency Signal detection Intrusion detection Machine learning Fluid flow Network Intrusion Detection Explainable AI Uncertainty Quantification Zero-day Attacks | In practical Network Intrusion Detection System (NIDS) deployments, detecting anomalies is only the first step, while determining the exact nature of those anomalies is equally important. Commonly, anomalous traffic is forwarded to a supervised multiclass classifier trained to identify known attack categories. While effective for known threats, this step presents a significant limitation, as zero-day attacks can be misclassified as known attacks. Therefore, there is a need for approaches that go beyond standard classification and can reliably recognize when an input does not conform to any learned attack pattern, i.e., zero-day attacks. To tackle this problem, we propose a novel detection strategy that leverages per-instance feature importance scores from an explainable Artificial Intelligence (XAI) framework and prediction uncertainty estimates derived from an ensemble classifier. To evaluate our approach, we conduct extensive experiments using a leave-one-attack-out strategy across three benchmark datasets, CICIoT2023, NF–TON–IoT, and CIC–DDoS2019, and test performance under two underlying classifiers, namely XG-Boost and Random Forest, demonstrating the model-agnostic nature of our method. Experimental results show that our approach achieves best-case AUROC gains approaching 40% and F1-score improvements of up to 73%, while maintaining positive or near-neutral worst-case performance across datasets, highlighting the effectiveness and robustness of jointly modeling explanation-driven reconstruction error and predictive uncertainty for reliable zero-day threat identification. | 10.1109/TNSM.2026.3731401 |
| Messaoud Ait-Yahia, Wael Jaafar, Rami Langar | Joint Design of Blockchain-Enabled Service Placement and Task Assignment in Vehicular Fog Computing Networks | 2026 | Early Access | Delays Timing Optimization Autonomous aerial vehicles Modeling Gallium Central Processing Unit Joints Bandwidth Elementary particles Resource allocation Blockchain VNF placement task assignment vehicular fog computing PSO GA IoV | Driven by the evolution of blockchain and fog computing, vehicular networks are increasingly capable of supporting latency-sensitive applications with enhanced security and trust guarantees. However, the joint resource allocation for task offloading and blockchain services has been insufficiently investigated in existing works. To address this gap, this paper proposes a framework for jointly allocating resources of blockchain, users’ virtualized services, and Mobile Edge Computing (MEC) task assignment in Vehicular Fog Computing (VFC) networks. Specifically, we formulate the optimization problem as an integer nonlinear programming model aiming to maximize the satisfaction rate of users’ service requests while minimizing the corresponding blockchain operation time under mobility, queuing, instantiation, and resource constraints. To solve it in a timely manner, we design two-stage hierarchical low-complexity solutions, namely a Particle Swarm Optimization-based Joint Blockchain-enabled Service placement and Task Assignment algorithm (PSO-JBSTA), and a Genetic Algorithm-based approach (GA-JBSTA). Through extensive simulations, we demonstrate the effectiveness of PSO-JBSTA (resp. GA-JBSTA) and their adaptability to network conditions, achieving an average 35% (resp. 24%) improvement in users’ service satisfaction rate and 9.5% (resp. 10.2%) reduction in average blockchain validation delay compared with the baselines. | 10.1109/TNSM.2026.3737068 |
| Junior Momo Ziazet, Brigitte Jaumard | Energy Efficient Placement of Logical Functionalities in 5G Networks | 2026 | Early Access | Energy Copper Modeling Energy consumption Joining processes Optimization 5G mobile communication Timing Delays Algorithms 5G Logical Functionalities Network Function Placement DU/CU/UPF Optimization Energy Efficiency mathematical optimization Column Generation | Although 5G networks are more efficient in terms of power consumption to traffic ratio, efforts still need to be made to further increase energy efficiency not only for the radio part, but also with respect to the growing cloud component with edge servers. Consolidation of traffic workloads onto shared infrastructures is a key feature of cloud computing to reduce energy consumption, and logical functionality placement plays a key role in this regard. Here, in the cloud RAN context, we propose a unified and energy-aware logical placement of 5G E2E functionalities, i.e., distributed units (DUs), centralized units (CUs), and user plane functions (UPFs), together with traffic routing. The placement problem is formulated as a large-scale integer linear program and solved using a column generation-based decomposition technique, complemented by an efficient heuristic to ensure tractability and improved scalability. The model captures key network and cloud (compute) resources, jointly optimizing the placement of DU, CU, and UPF components, along with traffic routing, to minimize energy consumption while maintaining low latency and high Quality of Service (QoS). Numerical results, based on an open Montreal traffic dataset, demonstrate that the proposed column generation algorithm achieves near-optimal solutions, while the heuristic approach offers significantly better scalability with consistently strong performance. The proposed methods reduce energy consumption by up to 14% and maintain low-latency service delivery. Furthermore, the results highlight that static, peak-time-based placement strategies can lead to inefficiencies throughout the day, emphasizing the importance of accounting for broader temporal traffic patterns. | 10.1109/TNSM.2026.3729149 |
| Amr Aboeleneen, Mohamed Abdallah, Aiman Erbad, Amr Salem | CIVIC: Cooperative Immersion Via Intelligent Credit-sharing in DRL-Powered Metaverse | 2026 | Early Access | Resource management Modeling Metaverse Costing Costs Optimization Head Accuracy Synchronization Actuators Deep Reinforcement Learning Immersion Metaverse Multi Service-Provider Resource Allocation Cooperative Systems Digital Twins | The Metaverse faces complex resource allocation challenges due to diverse Virtual Environments (VEs), Digital Twins (DTs), dynamic user demands, and strict immersion needs. This paper introduces CIVIC (Cooperative Immersion Via Intelligent Credit-sharing), a novel framework optimizing service-profile provisioning and budget-credit sharing among multiple Metaverse Service Providers (MSPs) to enhance user immersion. Unlike existing methods, CIVIC integrates VE rendering, DT synchronization, credit sharing, and immersion-aware provisioning within a cooperative multi-MSP model. The resource allocation problem is formulated as two NP-hard challenges: a non-cooperative setting where MSPs operate independently and a cooperative setting utilizing a General Credit Pool (GCP) for dynamic budget support. Using Deep Reinforcement Learning (DRL) for tuning resources and managing cooperating MSPs, CIVIC achieves 12-36% higher request completion, 23-70% higher fulfillment rates, 20-60% more served clients, and up to 51% more fairly distributed requests, all with competitive costs. Extensive experiments demonstrate CIVIC’s resilience, adaptability, and robust performance under dynamic load conditions and unexpected demand surges, making it suitable for real-world distributed Metaverse infrastructures. | 10.1109/TNSM.2026.3737119 |
| Deemah H. Tashman, Soumaya Cherkaoui | Trustworthy AI-Driven Dynamic Hybrid RIS: Joint Optimization and Reward Poisoning-Resilient Control in Cognitive MISO Networks | 2026 | Early Access | Reconfigurable intelligent surfaces Reliability Optimization Security MISO Array signal processing Vectors Satellites Reflection Interference Beamforming cascaded channels cognitive radio networks deep reinforcement learning dynamic hybrid reconfigurable intelligent surfaces energy harvesting poisoning attacks | Cognitive radio networks (CRNs) are a key mechanism for alleviating spectrum scarcity by enabling secondary users (SUs) to opportunistically access licensed frequency bands without harmful interference to primary users (PUs). To address unreliable direct SU links and energy constraints common in next-generation wireless networks, this work introduces an adaptive, energy-aware hybrid reconfigurable intelligent surface (RIS) for underlay multiple-input single-output (MISO) CRNs. Distinct from prior approaches relying on static RIS architectures, our proposed RIS dynamically alternates between passive and active operation modes in real time according to harvested energy availability. We also model our scenario under practical hardware impairments and cascaded fading channels. We formulate and solve a joint transmit beamforming and RIS phase optimization problem via the soft actor-critic (SAC) deep reinforcement learning (DRL) method, leveraging its robustness in continuous and highly dynamic environments. Notably, we conduct the first systematic study of reward poisoning attacks on DRL agents in RIS-enhanced CRNs, and propose a lightweight, real-time defense based on reward clipping and statistical anomaly filtering. Numerical results demonstrate that the SAC-based approach consistently outperforms established DRL base-lines, and that the dynamic hybrid RIS strikes a superior trade-off between throughput and energy consumption compared to fully passive and fully active alternatives. We further show the effectiveness of our defense in maintaining SU performance even under adversarial conditions. Our results advance the practical and secure deployment of RIS-assisted CRNs, and highlight crucial design insights for energy-constrained wireless systems. | 10.1109/TNSM.2026.3660728 |
| Shuang Zheng, Xing Zhang, Michael Sheng, Haixu Wang, Wenbo Wang | Beam Hopping Low Earth Orbit Satellite Resource Allocation for Differentiated Services and Robustness Analysis under Model Attacks | 2026 | Early Access | Beams Satellites Resource management Modeling Optimization Schedules Scheduling Low earth orbit satellites Algorithms Bridges LEO satellite communications deep reinforcement learning digital twin resource allocation adversarial attack | Beam hopping (BH)-enabled Low Earth Orbit (LEO) satellites play a pivotal role in next-generation communication networks, providing global coverage, improving spectrum efficiency, and supporting flexible adaptation to heterogeneous service demands. To fully exploit these capabilities, artificial intelligence (AI) techniques are increasingly employed for dynamic resource allocation and power management. However, limited onboard resources and potential adversarial perturbations pose challenges to both efficiency and robustness. To address these issues, we leverage digital twin technology to accurately capture the spatio-temporal dynamics of user–satellite visibility, providing precise state information for decision-making. Building on this, we formulate a joint optimization framework for BH scheduling and power allocation as a Markov Decision Process and propose the BRIDGE—BH with Reinforcement learning incorporating Integrated Dirichlet and Gumbel-TopK Exploration—which integrates a quality of service (QoS)-driven subchannel scheduling mechanism to ensure efficient and differentiated resource allocation. The model’s robustness is systematically evaluated under three classical adversarial attacks. Simulation results demonstrate that our approach achieves superior energy efficiency, service throughput, and fairness, while the robustness analysis shows stable performance under the considered bounded adversarial perturbations. | 10.1109/TNSM.2026.3710750 |
| Francisco Muro, Eduardo Baena, Tomaso De Cola, Sergio Fortes, Raquel Barco | AI-Driven Optimization of Virtual Network Function Allocation in 6G Non-Terrestrial Networks | 2026 | Early Access | Resource management Optimization Satellites Modeling Artificial intelligence Information rates Throughput Measurement 5G mobile communication Loading 6G Non-Terrestrial Networks O-RAN Kubernetes Virtual Network Functions VNF Allocation Machine Learning VNF Placement Gradient-Free Optimization Network Performance Resource Management | The integration of 6G technologies into Non-Terrestrial Networks (NTNs) raises a fundamental orchestration problem: how to allocate Virtual Network Functions (VNFs) across satellite and terrestrial domains under tight onboard resource constraints and a continuously changing topology. The virtualized 6G Open Radio Access Network (O-RAN) paradigm makes it possible to run 5G software stacks on Software-Defined Radios (SDRs) based on General Purpose Processors (GPPs), but it also turns VNF placement into a high-dimensional, multi-objective decision that static heuristics and model-based formulations struggle to capture. This paper addresses that gap by introducing an AI-driven VNF allocation framework for 6G-NTN environments built on an O-RAN-based distributed architecture and orchestrated on top of Kubernetes. The VNF allocation problem is formalized for a multi-domain 6G-NTN scenario with constrained satellite resources, and a measurement-based test campaign is designed to characterize the emulated platform in terms of virtual resource utilization and end-to-end performance. The framework couples tree-based machine learning predictors with a gradient-free optimizer to reach the optimal feasible allocation, outperforming two heuristic baselines drawn from the VNF placement literature by reducing the service RTT by up to 39% and delivering up to 3× higher YouTube DL throughput with respect to the best feasible heuristic. Beyond these gains, the proposed framework establishes a measurement-driven, reproducible methodology for VNF allocation in 6GNTN scenarios, demonstrating that AI-driven orchestration can systematically uncover non-obvious resource configurations that purely analytical or static approaches consistently miss. | 10.1109/TNSM.2026.3724474 |
| Soonbeom Kwon, Yusu Noh, Youngwoo Jang, Illyoung Choi, Byungchul Tak, In-geol Chun, Young-Kyoon Suh | Scalable and Robust Resource Provisioning via Adaptive Task Scheduling for Edge Devices | 2026 | Early Access | Schedules Scheduling Cloning Timing Educational institutions Computers Transcoding Videos Tail Edge computing Edge devices Edge server Resource augmentation Task distribution Kubernetes | Edge devices, such as wearables, drones, and CCTV systems, are vital for real-time data collection in urban intelligence. However, their limited computational and storage capacities pose significant challenges. While offloading to public clouds offers scalability, it often incurs high latency and operational costs. Conversely, centralizing workloads on edge servers may result in the underutilization of high-performance edge devices. To address these limitations, we introduce ERPF, a Kubernetes-based Edge Resource Provisioning Framework that augments the capabilities of heterogeneous edge environments. ERPF orchestrates dynamic volume provisioning, GPU-aware resource allocation, execution context migration, and adaptive task distribution to improve system flexibility and efficiency. Building on this, we propose a novel adaptive task scheduling technique, termed eATS, composed of three key mechanisms: (i) Partition Smoothing Scheme for stable task granularity control, (ii) Resilient Edge Reintegration for failure detection and task reassignment, and (iii) Competitive Task Cloning for speculative execution with fastest-result commitment. The proposed eATS scheme reduces task execution time by up to 27.6%, lowers partition size variability by 8.7×, and improves scheduling robustness across heterogeneous edge devices over the baseline. | 10.1109/TNSM.2026.3694238 |
| Martine S. Lenders, Carsten Bormann, Thomas C. Schmidt, Matthias Wählisch | A Leaner and Faster Web: How CBOR Can Improve Dynamic Content Encoding in JSON and DNS over HTTPS | 2026 | Early Access | Internet of Things Encoding Internet Arrays Gain Recording Tagging Timing HTTP Decoding CBOR World Wide Web JSON DNS application/dns+cbor Internet measurements | The Internet community has taken major efforts to decrease latency on the World Wide Web with significant improvements in accelerating content transport and in compressing static content. Less attention, however, has been dedicated to compression of dynamic content. Such content is commonly provided by JSON and DNS over HTTPS. Dynamic content objects continue to grow in size, which increases latency and fosters the digital inequality. In this paper, we propose to mitigate this increase by utilizing Concise Binary Object Representation (CBOR), a standard originally designed for the constrained Internet of Things (IoT) to restrict packet sizes and enable efficient encoding of data objects. We provide protocol design and three new data sets for the evaluation of dynamic content, DNS, and the loading of websites. Our key findings are the following: (i) Switching the data representation from JSON to CBOR reduces data by up to 80%. This size reduction can decrease loading times by up to 13.8% when downloading large objects—even in local setups. (ii) Enabling CBOR for DNS over HTTPS (DoH) and DNS over CoAP (DoC) reduces packet sizes significantly. Compressing only names combined with unpacked CBOR achieves maximum gain of 52.2%, using more complex but still lightweight Packed CBOR allows minimizing packets by up to 95.5%. Our lean decoder for name compression can fit into as little as 314 bytes of build size. Our results clearly show the potential of CBOR outside of IoT scenarios. Parts of this research have already influenced work within the IETF. | 10.1109/TNSM.2026.3722114 |
| Stephen Jasina, Loqman Salamatian, Joshua Mathews, Scott Anderson, Paul Barford, Mark Crovella, Walter Willinger | Matisse: Visualizing Measured Internet Latencies as Manifolds | 2026 | Early Access | Manifolds Internet Measurement Visualization Delays Distance measurement Joining processes Surfaces Timing Europe network internet measurement curvature manifold visualization | Manifolds are complex topological spaces that can be used to represent datasets of real-world measurements. Visualizing such manifolds can help with illustrating their topological characteristics (e.g., curvature) and providing insights into important properties of the underlying data (e.g., anomalies in the measurements). In this paper, we describe a new methodology and system for generating and visualizing manifolds that are inferred from actual Internet latency measurements between different cities and are projected over a 2D Euclidean space (e.g., a geographic map). Our method leverages a series of graphs that capture critical information contained in the data, including well-defined locations (for vertices) and Ricci curvature information (for edges). Our visualization approach then generates a curved surface (manifold) in which (a) geographical locations of vertices are maintained and (b) the Ricci curvature values of the graph edges determine the curvature properties of the manifold. The resulting manifold highlights areas of critical connectivity and defines an instance of “Internet delay space” where latency measurements manifest as geodesics. We describe details of our method and its implementation in a tool, which we call Matisse, for generating, visualizing and manipulating manifolds projected onto a base map. We illustrate Matisse with three case studies: a simple example to demonstrate key concepts, and visualizations of the US and Europe public Internet to show Matisse’s utility. | 10.1109/TNSM.2026.3730274 |
| Xiaodi Wang, Yunwei Dong, Weizhi Meng, Meng Li, Yining Liu | Dropout-Tolerant Privacy-Preserving Aggregation for Federated Mobile Crowdsensing | 2026 | Early Access | Modeling Privacy Internet of Things Training Federated learning Accuracy Calcium Timing Silicon Security Mobile crowdsensing Federated learning Privacy preservation Dropout tolerance Homomorphic encryption | Federated Learning (FL) has emerged as a key enabler for privacy-preserving, decentralized sensing systems, giving rise to Federated Mobile Crowdsensing (F-MCS). A well-known bottleneck in such systems is the inefficiency of synchronous training, which stalls for all participants and is susceptible to stragglers in heterogeneous environments. Although asynchronous FL methods have been explored to alleviate this, they often introduce the critical issue of stale updates, which can degrade model convergence and accuracy. To simultaneously address the challenges of efficiency, staleness, and robustness, this paper proposes a novel Dropout-Tolerant Privacy Aggregation (DTPA) scheme for FL that operates without a trusted third party (TTP). Our solution leverages the distributed decryption feature of the lifted EC-ElGamal cryptosystem to enable secure, decentralized model aggregation. We further introduce an efficient worker selection algorithm to systematically reduce waiting time. Moreover, a dedicated dropout-tolerant mechanism is developed to maintain protocol execution even under a high rate of client failures, thereby enhancing robustness. Security analysis confirms that our scheme fulfills essential privacy and security requirements. Extensive simulations demonstrate that the proposed DTPA scheme significantly improves training efficiency and convergence stability compared to state-of-the-art methods, while remaining practical for deployment on resource-constrained mobile devices. | 10.1109/TNSM.2026.3732465 |