Computer Communications最新文献

{"title":"Towards proactive rumor control: When a budget constraint meets impression counts","authors":"Pengfei Xu,&nbsp;Zhiyong Peng,&nbsp;Liwei Wang","doi":"10.1016/j.comcom.2024.108010","DOIUrl":"10.1016/j.comcom.2024.108010","url":null,"abstract":"<div><div>The proliferation of rumors in online networks poses significant public safety risks and economic repercussions. Addressing this, we investigate the understudied aspect of rumor control: the interplay between influence block effect and user impression counts under budget constraints. We introduce two problem variants, RCIC and RCICB, tailored for diverse application contexts. Our study confronts two inherent challenges: the NP-hard nature of the problems and the non-submodularity of the influence block, which precludes direct greedy approaches. We develop a novel branch-and-bound framework for RCIC, achieving a (<span><math><mrow><mn>1</mn><mo>−</mo><mn>1</mn><mo>/</mo><mi>e</mi><mo>−</mo><mi>ϵ</mi></mrow></math></span>) approximation ratio, and enhance its efficacy with a progressive upper bound estimation, refining the ratio to (<span><math><mrow><mn>1</mn><mo>−</mo><mn>1</mn><mo>/</mo><mi>e</mi><mo>−</mo><mi>ϵ</mi><mo>−</mo><mi>ρ</mi></mrow></math></span>). Extending these techniques to RCICB, we attain approximation ratios of (<span><math><mrow><mfrac><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></mfrac><mrow><mo>(</mo><mn>1</mn><mo>−</mo><mn>1</mn><mo>/</mo><mi>e</mi><mo>)</mo></mrow><mo>−</mo><mi>ϵ</mi></mrow></math></span>) and (<span><math><mrow><mfrac><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></mfrac><mrow><mo>(</mo><mn>1</mn><mo>−</mo><mn>1</mn><mo>/</mo><mi>e</mi><mo>−</mo><mi>ρ</mi><mo>)</mo></mrow><mo>−</mo><mi>ϵ</mi></mrow></math></span>). We conduct experiments on real-world datasets to verify the efficiency, effectiveness, and scalability of our methods.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"230 ","pages":"Article 108010"},"PeriodicalIF":4.5,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trustless privacy-preserving data aggregation on Ethereum with hypercube network topology","authors":"Goshgar C. Ismayilov,&nbsp;Can Özturan","doi":"10.1016/j.comcom.2024.108009","DOIUrl":"10.1016/j.comcom.2024.108009","url":null,"abstract":"<div><div>The privacy-preserving data aggregation is a critical problem for many applications where multiple parties need to collaborate with each other privately to arrive at certain results. Blockchain, as a database shared across the network, provides an underlying platform on which such aggregations can be carried out with a decentralized manner. Therefore, in this paper, we have proposed a scalable privacy-preserving data aggregation protocol for summation on the Ethereum blockchain by integrating several cryptographic primitives including commitment scheme, asymmetric encryption and zero-knowledge proof along with the hypercube network topology. The protocol consists of four stages as <em>contract deployment</em>, <em>user registration</em>, <em>private submission</em> and <em>proof verification</em>. The analysis of the protocol is made with respect to two main perspectives as security and scalability including computational, communicational and storage overheads. In the paper, the zero-knowledge proof, smart contract and web user interface models for the protocol are provided. We have performed an experimental study in order to identify the required gas costs per individual and per system. The general formulation is provided to characterize the changes in gas costs for the increasing number of users. The zero-knowledge proof generation and verification times are also measured.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"230 ","pages":"Article 108009"},"PeriodicalIF":4.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A survey on authentication protocols of dynamic wireless EV charging","authors":"Nethmi Hettiarachchi,&nbsp;Saqib Hakak,&nbsp;Kalikinkar Mandal","doi":"10.1016/j.comcom.2024.108008","DOIUrl":"10.1016/j.comcom.2024.108008","url":null,"abstract":"<div><div>Electric Vehicles (EVs) are considered the predominant method of decreasing fossil fuels as well as greenhouse gas emissions. With the drastic growth of EVs, the future smart grid is expected to extensively incorporate dynamic wireless charging (DWC) systems, a significant advancement over traditional charging methods. DWC, offering the unique ability to charge vehicles in motion, introduces new infrastructures, complex network models and consequently, a massive attack surface. To accomplish the goal of such an enormous smart grid accompanying DWCs, the security of EV charging infrastructures has become a deciding factor. EV charging is vulnerable to cyberattacks as it has many attack vectors and many challenges to combat. Unlike the traditional charging services provided in a typical static charging station, the DWC has a complex network architecture which makes it vulnerable to many forms of cyberattacks. Authentication plays a crucial role in safeguarding the frontline security of this ecosystem. However, within the domain of DWC, the current academic landscape has seen limited attention dedicated to authentication protocols. This background signifies the necessity of a comprehensive survey to cover the authentication protocols of dynamic wireless EV charging environments. This review paper examines the security requirements and the network model of the DWC, providing comprehensive insights into existing authentication protocols by scrutinizing a proper classification. Furthermore, the paper addresses existing challenges in authentication schemes within DWC and explores potential future research tendencies aiming to strengthen the security framework of this emerging technology.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"230 ","pages":"Article 108008"},"PeriodicalIF":4.5,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trajectory design of UAV-aided energy-harvesting relay networks in the terahertz band","authors":"Saifur Rahman Sabuj ,&nbsp;Yeongi Cho ,&nbsp;Mahmoud Elsharief ,&nbsp;Han-Shin Jo","doi":"10.1016/j.comcom.2024.108007","DOIUrl":"10.1016/j.comcom.2024.108007","url":null,"abstract":"<div><div>Unmanned aerial vehicle (UAV)-aided relaying benefits from easy deployment, strong communication channels, and mobility compared with traditional ground relaying, thereby enhancing the wireless connectivity of future industrial Internet of Things networks. In this paper, a UAV-assisted relay network capable of harvesting energy from a source is designed by exploiting the radio frequency band and transmitting information between the transmitter and corresponding receiver utilizing the terahertz (THz) band. Subsequently, the channel capacity is analytically derived using the finite blocklength theorem for THz communication. In addition, we formulate an optimization problem to determine the optimal location of the UAV to maintain the minimum channel capacity between the transmitter and receiver pair. To determine the optimal location, we employ the augmented Lagrange multiplier approach. Regarding the optimal location, we propose an algorithm for two UAV trajectories, namely forward and backward trajectories, that employs modified minimal jerk trajectories. The numerical results indicate that the backward trajectory provides better system performance in terms of channel capacity. Moreover, the simulation findings show that in urban, dense urban, and high-rise areas, the backward trajectory improves upon the forward trajectory by approximately 41.07%, 59.02%, and 76.47%, respectively, while using a blocklength of 400 bytes.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"230 ","pages":"Article 108007"},"PeriodicalIF":4.5,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A dual-tier adaptive one-class classification IDS for emerging cyberthreats","authors":"Md. Ashraf Uddin ,&nbsp;Sunil Aryal ,&nbsp;Mohamed Reda Bouadjenek ,&nbsp;Muna Al-Hawawreh ,&nbsp;Md. Alamin Talukder","doi":"10.1016/j.comcom.2024.108006","DOIUrl":"10.1016/j.comcom.2024.108006","url":null,"abstract":"<div><div>In today’s digital age, our dependence on IoT (Internet of Things) and IIoT (Industrial IoT) systems has grown immensely, which facilitates sensitive activities such as banking transactions and personal, enterprise data, and legal document exchanges. Cyberattackers consistently exploit weak security measures and tools. The Network Intrusion Detection System (IDS) acts as a primary tool against such cyber threats. However, machine learning-based IDSs, when trained on specific attack patterns, often misclassify new emerging cyberattacks. Further, the limited availability of attack instances for training a supervised learner and the ever-evolving nature of cyber threats further complicate the matter. This emphasizes the need for an adaptable IDS framework capable of recognizing and learning from unfamiliar/unseen attacks over time. In this research, we propose a one-class classification-driven IDS system structured on two tiers. The first tier distinguishes between normal activities and attacks/threats, while the second tier determines if the detected attack is known or unknown. Within this second tier, we also embed a multi-classification mechanism coupled with a clustering algorithm. This model not only identifies unseen attacks but also uses them for retraining them by clustering unseen attacks. This enables our model to be future-proofed, capable of evolving with emerging threat patterns. Leveraging one-class classifiers (OCC) at the first level, our approach bypasses the need for attack samples, addressing data imbalance and zero-day attack concerns and OCC at the second level can effectively separate unknown attacks from the known attacks. Our methodology and evaluations indicate that the presented framework exhibits promising potential for real-world deployments.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"229 ","pages":"Article 108006"},"PeriodicalIF":4.5,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A deep dive into cybersecurity solutions for AI-driven IoT-enabled smart cities in advanced communication networks","authors":"Jehad Ali ,&nbsp;Sushil Kumar Singh ,&nbsp;Weiwei Jiang ,&nbsp;Abdulmajeed M. Alenezi ,&nbsp;Muhammad Islam ,&nbsp;Yousef Ibrahim Daradkeh ,&nbsp;Asif Mehmood","doi":"10.1016/j.comcom.2024.108000","DOIUrl":"10.1016/j.comcom.2024.108000","url":null,"abstract":"<div><div>The integration of the Internet of Things (IoT) and artificial intelligence (AI) in urban infrastructure, powered by advanced information communication technologies (ICT), has paved the way for smart cities. While these technologies promise enhanced quality of life, economic growth, and improved public services, they also introduce significant cybersecurity challenges. This article comprehensively examines the complex factors in securing AI-driven IoT-enabled smart cities within the framework of future communication networks. Our research addresses critical questions about the evolving threat, multi-layered security approaches, the role of AI in enhancing cybersecurity, and necessary policy frameworks. We conduct an in-depth analysis of cybersecurity solutions across service, application, network, and physical layers, evaluating their effectiveness and integration potential with existing systems. The study offers a detailed examination of AI-driven security approaches, particularly ML and DL techniques, assessing their applicability and limitations in smart city environments. We incorporate real-world case studies to illustrate successful strategies and show areas requiring further research, especially considering emerging communication technologies. Our findings contribute to the field by providing a multi-layered classification of cybersecurity solutions, assessing AI-driven security approaches, and exploring future research directions. Additionally, we investigate the essential role played by policy and regulatory frameworks in safeguarding smart city security. Based on our analysis, we offer recommendations for technical implementations and policy development, aiming to create a holistic approach that balances technological advancements with robust security measures. This study also provides valuable insights for scholars, professionals, and policymakers, offering a comprehensive perspective on the cybersecurity challenges and solutions for AI-driven IoT-enabled smart cities in advanced communication networks.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"229 ","pages":"Article 108000"},"PeriodicalIF":4.5,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The pupil outdoes the master: Imperfect demonstration-assisted trust region jamming policy optimization against frequency-hopping spread spectrum","authors":"Ning Rao,&nbsp;Hua Xu,&nbsp;Zisen Qi,&nbsp;Dan Wang,&nbsp;Yue Zhang,&nbsp;Xiang Peng,&nbsp;Lei Jiang","doi":"10.1016/j.comcom.2024.107993","DOIUrl":"10.1016/j.comcom.2024.107993","url":null,"abstract":"<div><div>Jamming decision-making is a pivotal component of modern electromagnetic warfare, wherein recent years have witnessed the extensive application of deep reinforcement learning techniques to enhance the autonomy and intelligence of wireless communication jamming decisions. However, existing researches heavily rely on manually designed customized jamming reward functions, leading to significant consumption of human and computational resources. To this end, under the premise of obviating designing task-customized reward functions, we propose a jamming policy optimization method that learns from imperfect demonstrations to effectively address the complex and high-dimensional jamming resource allocation problem against frequency hopping spread spectrum (FHSS) communication systems. To achieve this, a policy network is meticulously architected to consecutively ascertain jamming schemes for each jamming node, facilitating the construction of the dynamic transition within the Markov decision process. Subsequently, anchored in the dual-trust region concept, we design policy improvement and policy adversarial imitation phases. During the policy improvement phase, the trust region policy optimization method is utilized to refine the policy, while the policy adversarial imitation phase employs adversarial training to guide policy exploration using information embedded in demonstrations. Extensive simulation results indicate that our proposed method can approximate the optimal jamming performance trained under customized reward functions, even with rough binary reward settings, and also significantly surpass demonstration performance.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"229 ","pages":"Article 107993"},"PeriodicalIF":4.5,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Symbol-level scheme for combating eavesdropping: Symbol conversion and constellation adjustment","authors":"Datong Xu ,&nbsp;Chaosheng Qiu ,&nbsp;Wenshan Yin ,&nbsp;Pan Zhao ,&nbsp;Mingyang Cui","doi":"10.1016/j.comcom.2024.107992","DOIUrl":"10.1016/j.comcom.2024.107992","url":null,"abstract":"<div><div>In the non-orthogonal multiple access scenario, users may suffer inter-multiuser eavesdropping due to the feature of successive interference cancellation, and the conditions of eavesdropping suppression methods in the traditional schemes may not be satisfied. To combat this eavesdropping, we consider physical layer security and propose a novel scheme by specially designing symbol conversion and constellation adjustment methods. Based on these methods, the amplitudes and phases of symbols are properly changed. When each user intercepts information as an eavesdropper, he/she has to accept high error probability, or he/she has to undergo exorbitant overhead. Analytical and numerical results demonstrate that the proposed scheme can protect the privacy of information, and this protection does not destruct the execution of successive interference cancellation and symbol transmission.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"229 ","pages":"Article 107992"},"PeriodicalIF":4.5,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-performance BFT consensus for Metaverse through block linking and shortcut loop","authors":"Rui Hao ,&nbsp;Chaozheng Ding ,&nbsp;Xiaohai Dai ,&nbsp;Hao Fan ,&nbsp;Jianwen Xiang","doi":"10.1016/j.comcom.2024.107990","DOIUrl":"10.1016/j.comcom.2024.107990","url":null,"abstract":"<div><div>In recent years, the Metaverse has captured increasing attention. As the foundational technologies for these digital realms, blockchain systems and their critical component – <em>the Byzantine Fault Tolerance</em> (BFT) consensus protocol – significantly influence the performance of Metaverse. Due to vulnerabilities to network attacks, synchronous and partially synchronous consensus protocols often face compromises in their liveness or security. Consequently, recent efforts in BFT consensus have shifted towards asynchronous consensus protocols, notably the <em>Multi-valued Validated Binary Agreement</em> (MVBA) protocols, with sMVBA being particularly prominent. Despite its advances, sMVBA struggles to meet the high-performance demands of Metaverse applications. Each sMVBA instance commits only one block, discarding all others, which severely restricts throughput. Moreover, if a leader in a given view crashes, nodes must rebroadcast blocks in the subsequent view, resulting in increased latency.</div><div>To overcome these challenges, this paper introduces <span>Mercury</span>, a protocol designed to enhance throughput under various conditions and reduce latency in less favorable scenarios where leaders are crashed. <span>Mercury</span> incorporates a mechanism whereby each block contains hashes from blocks of a previous instance, linking blocks across instances. This structure ensures that once a block is committed, all its linked blocks are also committed, thereby boosting throughput. Additionally, <span>Mercury</span> integrates a ‘shortcut loop’ mechanism, allowing nodes to bypass the last phase of the current view and the block broadcasting in the next view, significantly decreasing latency. Our experimental evaluations of <span>Mercury</span> confirm its superior performance. Compared to the cutting-edge protocols, sMVBA, CKPS, and AMS, <span>Mercury</span> boosts throughput by 1.03X, 1.65X, and 2.51X, respectively.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"229 ","pages":"Article 107990"},"PeriodicalIF":4.5,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Automating 5G network slice management for industrial applications","authors":"André Perdigão,&nbsp;José Quevedo,&nbsp;Rui L. Aguiar","doi":"10.1016/j.comcom.2024.107991","DOIUrl":"10.1016/j.comcom.2024.107991","url":null,"abstract":"<div><div>The transition to Industry 4.0 introduces new use cases with unique communication requirements, demanding wireless technologies capable of dynamically adjusting their performance to meet various demands. Leveraging network slicing, 5G technology offers the flexibility to support such use cases. However, the usage and deployment of network slices in networks are complex tasks. To increase the adoption of 5G, there is a need for mechanisms that automate the deployment and management of network slices. This paper introduces a design for a network slice manager capable of such mechanisms in 5G networks. This design adheres to related standards, facilitating interoperability with other software, while also considering the capabilities and limitations of the technology. The proposed design can provision custom slices tailored to meet the unique requirements of verticals, offering communication performance across the spectrum of the three primary 5G services (eMBB, URLLC, and mMTC/mIoT). To access the proposed design, a Proof-of-Concept (PoC) prototype was developed and evaluated. The evaluation results demonstrate the flexibility of the proposed solution for deploying slices adjusted to the vertical use cases. Additionally, the slices generated by the PoC maintain a high TRL (Technology Readiness Level) equivalent to that of the commercial-graded network used.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"229 ","pages":"Article 107991"},"PeriodicalIF":4.5,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}