Computer Communications最新文献_第4页

Next-generation cloudlet federation for Internet of Things in healthcare: Enhancing response time and energy efficiency

IF 4.5 3区计算机科学

Computer Communications Pub Date : 2025-01-07 DOI: 10.1016/j.comcom.2025.108046

Rahima Tanveer , Muhammad Ziad Nayyer , Muhammad Hasan Jamal , Imran Raza , Claude Fachkha

{"title":"Next-generation cloudlet federation for Internet of Things in healthcare: Enhancing response time and energy efficiency","authors":"Rahima Tanveer , Muhammad Ziad Nayyer , Muhammad Hasan Jamal , Imran Raza , Claude Fachkha","doi":"10.1016/j.comcom.2025.108046","DOIUrl":"10.1016/j.comcom.2025.108046","url":null,"abstract":"<div><div>The integration of the Internet of Things (IoT) with edge computing has revolutionized various sectors, including healthcare, by enabling timely patient monitoring and service availability. These services encompass emergency responses, regular treatment, and physician assistance. Healthcare systems leverage mobile edge computing, fog computing, and cloudlet computing to offload data and computations and minimize delays and energy consumption. However, edge computing solutions face limitations such as restricted area coverage, diverse service requirements, and insufficient computational power, making them unsuitable for large-scale data processing and computation. To address the growing need for seamless patient information sharing among doctors and specialists across different hospitals, a resource-sharing solution, such as the cloudlet federation, is essential. Nonetheless, integrating IoT systems with cloudlet federations in healthcare presents challenges, primarily because of the necessity for mobile nodes such as ambulances, in addition to the fixed-edge nodes and brokers typical of traditional cloudlet federations. This study proposes a modified cloudlet federation model designed to overcome these challenges by effectively managing data from heterogeneous nodes. Our approach enhanced response times, reduced energy consumption, and ensured the availability of comprehensive patient information. The experimental results demonstrate a 49% improvement in response time and a 51% reduction in energy consumption compared with existing cloud-based solutions.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"232 ","pages":"Article 108046"},"PeriodicalIF":4.5,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160905","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}

引用次数: 0

DCDIM: Diversified influence maximization on dynamic social networks

IF 4.5 3区计算机科学

Computer Communications Pub Date : 2025-01-06 DOI: 10.1016/j.comcom.2025.108045

Sunil Kumar Meena , Shashank Sheshar Singh , Kuldeep Singh

引用次数: 0

UAVs deployment optimization in cell-free aerial communication networks

IF 4.5 3区计算机科学

Computer Communications Pub Date : 2025-01-06 DOI: 10.1016/j.comcom.2024.108041

Aya Ahmed , Cirine Chaieb , Wessam Ajib , Halima Elbiaze , Roch Glitho

引用次数: 0

5G for connected and automated mobility - Network level evaluation on real neighboring 5G networks: The Greece - Turkey cross border corridor

IF 4.5 3区计算机科学

Computer Communications Pub Date : 2025-01-04 DOI: 10.1016/j.comcom.2025.108047

Konstantinos Trichias , Serhat Col , Ioannis Masmanidis , Afrim Berisha , Foteini Setaki , Panagiotis Demestichas , Symeon Papavassiliou , Nikolaos Mitrou

{"title":"5G for connected and automated mobility - Network level evaluation on real neighboring 5G networks: The Greece - Turkey cross border corridor","authors":"Konstantinos Trichias , Serhat Col , Ioannis Masmanidis , Afrim Berisha , Foteini Setaki , Panagiotis Demestichas , Symeon Papavassiliou , Nikolaos Mitrou","doi":"10.1016/j.comcom.2025.108047","DOIUrl":"10.1016/j.comcom.2025.108047","url":null,"abstract":"<div><div>The automotive industry has been one of the vertical sectors eagerly waiting for the extended availability of 5G connectivity in order to deliver Connected and Automated Mobility (CAM) services. These services require extremely fast and reliable, uninterrupted communication to guarantee the safety of the drivers and other road users. Even though extended analysis and evaluation of the expected performance of 5G for CAM services has taken place in the past years via simulation studies and local trials based on 5G experimental testbeds, performance evaluation based on real 5G networks has been extremely limited, due to their unavailability until recently. Even more so in rural/highway conditions, as the 5G deployments so far have been focused on urban environments with greater population coverage. This article is among the first to present evaluation data and the corresponding analysis of the 5G Non-Stand Alone (NSA) network performance for CAM services based on neighboring 5G (overlay) networks in the cross-border corridor between Greece and Turkey, by one of the leading global 5G vendors and two of the top national operators. The performance evaluation focuses on the effect of inter-PLMN (Public Land Mobile Network) Handovers on the throughput, latency and interruption time experienced by a mobile user, and the network metrics achievable under various network configurations.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"232 ","pages":"Article 108047"},"PeriodicalIF":4.5,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161655","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}

引用次数: 0

A Contextual Aware Enhanced LoRaWAN Adaptive Data Rate for mobile IoT applications

IF 4.5 3区计算机科学

Computer Communications Pub Date : 2024-12-29 DOI: 10.1016/j.comcom.2024.108042

Muhammad Ali Lodhi , Lei Wang , Arshad Farhad , Khalid Ibrahim Qureshi , Jenhu Chen , Khalid Mahmood , Ashok Kumar Das

{"title":"A Contextual Aware Enhanced LoRaWAN Adaptive Data Rate for mobile IoT applications","authors":"Muhammad Ali Lodhi , Lei Wang , Arshad Farhad , Khalid Ibrahim Qureshi , Jenhu Chen , Khalid Mahmood , Ashok Kumar Das","doi":"10.1016/j.comcom.2024.108042","DOIUrl":"10.1016/j.comcom.2024.108042","url":null,"abstract":"<div><div>Long range wide area network (LoRaWAN) utilize Adaptive Data Rate (ADR) for static Internet of Things (IoT) applications such as smart parking in smart city. Blind ADR (BADR) has been introduced for end devices to manage the resources of mobile applications such as assets tracking. However, the predetermined mechanism of allocating the spreading factors (SFs) to mobile end devices is not adequate in terms of energy depletion. Recently, AI-based solutions to resource allocation have been introduced in the existing literature. However, implementing complex models directly on low-power devices is not ideal in terms of energy and processing power. Therefore, considering these challenges, in this paper, we present a novel Contextual Aware Enhanced LoRaWAN Adaptive Data Rate (CA-ADR) for mobile IoT Applications. The proposed CA-ADR comprises two modes offline and online. In offline mode, we compile a dataset based on successful acknowledgments received by the end devices. Later, dataset is modified by implementing contextual rule-based learning (CRL), following which we train a hybrid CNN-LSTM model. In the online mode, we utilize pre-trained model for efficient resource allocation (e.g., SF) to static and mobile end devices. The proposed CA-ADR has been implemented using TinyML, recommended for low-power and computational devices, which has shown improved results in terms of packet success ratio and energy consumption.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"232 ","pages":"Article 108042"},"PeriodicalIF":4.5,"publicationDate":"2024-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161654","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}

引用次数: 0

Blockchain-empowered multi-skilled crowdsourcing for mobile web 3.0

IF 4.5 3区计算机科学

Computer Communications Pub Date : 2024-12-19 DOI: 10.1016/j.comcom.2024.108037

Yu Li , Yueheng Lu , Xinyu Yang , Wenjian Xu , Zhe Peng

{"title":"Blockchain-empowered multi-skilled crowdsourcing for mobile web 3.0","authors":"Yu Li , Yueheng Lu , Xinyu Yang , Wenjian Xu , Zhe Peng","doi":"10.1016/j.comcom.2024.108037","DOIUrl":"10.1016/j.comcom.2024.108037","url":null,"abstract":"<div><div>As the next generation of the world wide web, web 3.0 is envisioned as a decentralized internet which improves data security and self-sovereign identity. The mobile web 3.0 mainly focuses on decentralized internet for mobile users and mobile applications. With the rapid development of mobile crowdsourcing research, existing mobile crowdsourcing models can achieve efficient allocation of tasks and responders. Benefiting from the inherent decentralization and immutability, more and more crowdsourcing models over mobile web 3.0 have been deployed on blockchain systems to enhance data verifiability. However, executing these crowdsourcing-oriented smart contracts on a blockchain may incur a large amount of gas consumption, leading to significant costs for the system and increasing users’ expenses. In addition, the existing crowdsourcing model does not take into account the expected quality of task completion in the matching link between tasks and responders, which will cause some tasks to fail to achieve effects and damage the interests of task publishers. In order to solve these problems, this paper proposes a decentralized multi-skill mobile crowdsourcing model with guaranteed task quality and gas optimization (DMCQG), which performs task matching while considering skill coverage and expected quality of task completion, and guarantees the final completion quality of each task. In addition, DMCQG also optimizes the gas value consumed by smart contracts at the code level, reducing the cost of crowdsourcing task participation. In order to verify whether DMCQG is effective, we deployed the model on the Ethereum platform for testing. Through inspection, it was proved that the final expected quality of the tasks matched by DMCQG was better than other models. And it is verified that after optimization, the gas consumption of DMCQG is significantly reduced.</div></div>","PeriodicalId":55224,"journal":{"name":"Computer Communications","volume":"232 ","pages":"Article 108037"},"PeriodicalIF":4.5,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160893","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}

引用次数: 0

Towards proactive rumor control: When a budget constraint meets impression counts 主动控制谣言：当预算受限时，印象很重要

IF 4.5 3区计算机科学

Computer Communications Pub Date : 2024-11-28 DOI: 10.1016/j.comcom.2024.108010

Pengfei Xu, Zhiyong Peng, Liwei Wang

{"title":"Towards proactive rumor control: When a budget constraint meets impression counts","authors":"Pengfei Xu, Zhiyong Peng, 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}

引用次数: 0

Trustless privacy-preserving data aggregation on Ethereum with hypercube network topology 使用超立方网络拓扑在以太坊上进行无信任的隐私保护数据聚合

IF 4.5 3区计算机科学

Computer Communications Pub Date : 2024-11-25 DOI: 10.1016/j.comcom.2024.108009

Goshgar C. Ismayilov, Can Özturan

{"title":"Trustless privacy-preserving data aggregation on Ethereum with hypercube network topology","authors":"Goshgar C. Ismayilov, 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}

引用次数: 0

A survey on authentication protocols of dynamic wireless EV charging 电动汽车动态无线充电认证协议研究进展

IF 4.5 3区计算机科学

Computer Communications Pub Date : 2024-11-20 DOI: 10.1016/j.comcom.2024.108008

Nethmi Hettiarachchi, Saqib Hakak, Kalikinkar Mandal

{"title":"A survey on authentication protocols of dynamic wireless EV charging","authors":"Nethmi Hettiarachchi, Saqib Hakak, 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}

引用次数: 0

Trajectory design of UAV-aided energy-harvesting relay networks in the terahertz band 太赫兹波段无人机辅助能量收集中继网络的轨迹设计

IF 4.5 3区计算机科学

Computer Communications Pub Date : 2024-11-16 DOI: 10.1016/j.comcom.2024.108007

Saifur Rahman Sabuj , Yeongi Cho , Mahmoud Elsharief , Han-Shin Jo

{"title":"Trajectory design of UAV-aided energy-harvesting relay networks in the terahertz band","authors":"Saifur Rahman Sabuj , Yeongi Cho , Mahmoud Elsharief , 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}

引用次数: 0