International Journal of Satellite Communications and Networking最新文献

A Load-Balancing Enhancement to Schedule-Aware Bundle Routing

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2025-01-15 DOI: 10.1002/sat.1549

Jason J. Kamps, Filip Palunčić, B. T. Maharaj

{"title":"A Load-Balancing Enhancement to Schedule-Aware Bundle Routing","authors":"Jason J. Kamps, Filip Palunčić, B. T. Maharaj","doi":"10.1002/sat.1549","DOIUrl":"https://doi.org/10.1002/sat.1549","url":null,"abstract":"<p>Delay- and disruption-tolerant networking (DTN) enables communication in networks afflicted by long propagation delays and sporadic connectivity. DTN routing techniques such as schedule-aware bundle routing (SABR) exist to route data bundles in deterministic networks, such as those found in deep-space environments, where node contacts are predictable. This article begins with an overview of DTN architecture and SABR. SABR's method of final route selection (forwarding rules) is closely examined. The article then addresses a limitation of SABR whereby the algorithm may overlook parallel channels, leading to network congestion. To mitigate this, an enhancement is proposed. This enhancement aims to optimize data bundle distribution across candidate routes in networks with parallel channels, thus alleviating congestion and enhancing overall network performance. This is achieved with simple modifications to SABR's forwarding rules to avoid the concentration of data bundles on a minority of node contacts. The enhancement is demonstrated through simulations in a reference scenario implemented in DtnSim.</p>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"43 2","pages":"122-130"},"PeriodicalIF":0.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/sat.1549","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Unified Resource Allocation Framework and Impact Evaluation for NGSO Satellite Constellations

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2025-01-12 DOI: 10.1002/sat.1547

Nils Pachler, Juan Jose Garau-Luis, Edward F. Crawley, Bruce G. Cameron

{"title":"A Unified Resource Allocation Framework and Impact Evaluation for NGSO Satellite Constellations","authors":"Nils Pachler, Juan Jose Garau-Luis, Edward F. Crawley, Bruce G. Cameron","doi":"10.1002/sat.1547","DOIUrl":"https://doi.org/10.1002/sat.1547","url":null,"abstract":"<div>\u0000 \u0000 <p>The new era of satellite communications will rely on thousands of highly flexible spacecraft capable of autonomously managing constellation resources, such as power or frequency. Previous work has focused on the automation of the individual tasks that compose the resource allocation problem (RAP). However, two aspects remain unaddressed: (1) A unified method that autonomously solves the RAP under nongeosynchronous conditions is still to be developed, and (2) the cost–benefit of using optimization methods remains to be studied. Note that these studies are critical for satellite operators to take appropriate decisions concerning the automation of communications constellations operations. To close this gap, this work proposes an adaptive framework to solve the RAP for high-dimensional nongeosynchronous satellite constellations. The proposed framework uses a divide-and-conquer approach that solves each step of the RAP, leveraging different optimization algorithms at the subproblem level to produce a valid and efficient allocation of resources over long time horizons. When comparing the proposed method against scalable greedy solutions, the former achieves up to four times more constellation capacity and reduces the overall consumed power by up to a factor of 3. The cost–benefit analysis reveals which RAP subproblems should be prioritized depending on the operator's objectives. Studying diverse operational conditions, we find that optimization methods enhance capacity consistently yet might raise power consumption due to trade-offs in the routing algorithms.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"43 2","pages":"77-96"},"PeriodicalIF":0.9,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Resource Allocation Techniques in Multibeam Satellites: Conventional Methods vs. AI/ML Approaches

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2025-01-02 DOI: 10.1002/sat.1548

Shwet Kashyap, Nisha Gupta

引用次数: 0

Energy-Aware Protocol Design and Evaluation of the PHY Layer in Satellite IoT

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-12-30 DOI: 10.1002/sat.1546

Simon Heine, Christian A. Hofmann, Andreas Knopp

{"title":"Energy-Aware Protocol Design and Evaluation of the PHY Layer in Satellite IoT","authors":"Simon Heine, Christian A. Hofmann, Andreas Knopp","doi":"10.1002/sat.1546","DOIUrl":"https://doi.org/10.1002/sat.1546","url":null,"abstract":"<p>Direct-to-satellite communication for the Internet of Things (IoT) has attracted significant interest from both the scientific community and major telecommunications players. The integration of satellite connectivity in smartphones and IoT devices promises a transformative impact on critical applications such as environmental monitoring, asset tracking, agriculture, and nature conservation. These applications require reliable and energy-efficient technologies for transmitting sensor data from regions without terrestrial networks, necessitating robust design of waveforms and protocols. This work investigates the most suitable IoT protocols for direct-to-satellite communication, emphasizing overhead, spectral, and energy efficiency. By introducing a framework and evaluation metrics that incorporate physical layer overhead into the evaluation, a comprehensive analysis of the effective energy efficiency in satellite IoT systems is conducted. Our findings highlight substantial differences among the Low Power Wide Area Network (LPWAN) protocols. Consequently, we propose a new classification for the most energy-efficient protocols, termed Massive Multiple Access very Low Power Wide Area Networks (MMA-vLPWANs). This classification aims to streamline the selection process for energy-conscious satellite IoT waveforms for deployments in remote areas. The results not only advance the understanding of protocol efficiency in satellite IoT communications but also offer a guideline for optimizing power usage in IoT devices, extending their operational life and enhancing their utility in inaccessible regions.</p>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"43 2","pages":"61-76"},"PeriodicalIF":0.9,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/sat.1546","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Featured Cover 了封面

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-12-16 DOI: 10.1002/sat.1542

Tongguang Zhang, Chunhong Liu, Qiaomei Tian, Bo Cheng

引用次数: 0

Cloud-Edge Collaboration-Based Multi-Cluster System for Space-Ground Integrated Network 基于云边缘协同的空地综合网络多集群系统

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-11-29 DOI: 10.1002/sat.1541

Tongguang Zhang, Chunhong Liu, Qiaomei Tian, Bo Cheng

{"title":"Cloud-Edge Collaboration-Based Multi-Cluster System for Space-Ground Integrated Network","authors":"Tongguang Zhang, Chunhong Liu, Qiaomei Tian, Bo Cheng","doi":"10.1002/sat.1541","DOIUrl":"https://doi.org/10.1002/sat.1541","url":null,"abstract":"<div>\u0000 \u0000 <p>As global informationization deepens, the importance of Space-Ground Integrated Network (SGIN) as a new network architecture becomes increasingly prominent. SGIN combines the advantages of ground and space networks, enabling global information interconnection and sharing through various communication means such as satellites, drones, and ground stations. However, due to its complex network environment and diverse communication requirements, traditional network architectures struggle to meet its demands for efficiency, stability, and scalability. To address these challenges, we focus on the research, design, and implementation of a cloud-edge collaboration-based multi-cluster system for SGIN. The goal is to construct an efficient, stable, and scalable network system capable of providing seamless global coverage and efficient communication within SGIN. We design a multi-cluster system architecture based on container technology, leveraging cloud and edge computing techniques for dynamic resource allocation and efficient utilization. This architecture aims to meet the diverse network service requirements of ground terminals, enhancing responsiveness, efficiency, resilience, and reliability of network services. Additionally, we introduce a multipath data transmission mechanism to support the transfer of large-scale data, such as remote sensing images. A simulation platform tailored for SGIN is developed, demonstrating the feasibility of the multi-cluster system and the effectiveness of multipath data transmission.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"43 1","pages":"40-60"},"PeriodicalIF":0.9,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142869128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Determination of Communication Link Availability for Co-Located GEO Satellites Due to Their Orbital Movements 同步轨道卫星轨道运动对通信链路可用性的影响

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-11-21 DOI: 10.1002/sat.1540

Umit Cezmi Yilmaz

引用次数: 0

A 3D LEO Channel Model Based on GBSM for Satellite-Ground Communication Scenario 基于卫星-地面通信场景 GBSM 的 3D LEO 信道模型

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-11-13 DOI: 10.1002/sat.1539

Zhaoyang Su, Yi Yin, Xianglong Duan, Zijie Han, Tao Zhou, Liu Liu

{"title":"A 3D LEO Channel Model Based on GBSM for Satellite-Ground Communication Scenario","authors":"Zhaoyang Su, Yi Yin, Xianglong Duan, Zijie Han, Tao Zhou, Liu Liu","doi":"10.1002/sat.1539","DOIUrl":"https://doi.org/10.1002/sat.1539","url":null,"abstract":"<div>\u0000 \u0000 <p>Low earth orbit (LEO) satellites have the characteristics of low communication delay, low deployment cost, and wide coverage, which have become an important component of the 6G air-space-ground integrated information network. However, satellite-ground communication has a large propagation distance, complex fading, and fast terminal movement speed, causing the channel characteristics different from terrestrial communication networks. Therefore, channel modeling is necessary when deploying a satellite-ground communication network. In this paper, a 3D geometry-based stochastic model (GBSM) is proposed for satellite-ground communication links. The proposed channel model includes several environments such as urban, suburban, and rural. Based on this model, the channel impulse response (CIR) can be obtained, and the closed-form expression of spatial-temporal correlation function and Doppler power spectrum density are derived. Through simulation, the characteristics of large-scale fading and small-scale fading are analyzed, which depict the significant differences from the terrestrial networks. The relevant results can provide contributions to the design of future satellite-ground communication systems.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"43 1","pages":"23-33"},"PeriodicalIF":0.9,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Enhancing Satellite Link Security Against Drone Eavesdropping Through Cooperative Communication 通过协同通信增强卫星链路安全防范无人机窃听

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-10-15 DOI: 10.1002/sat.1538

Rajnish Kumar, Shlomi Arnon

{"title":"Enhancing Satellite Link Security Against Drone Eavesdropping Through Cooperative Communication","authors":"Rajnish Kumar, Shlomi Arnon","doi":"10.1002/sat.1538","DOIUrl":"https://doi.org/10.1002/sat.1538","url":null,"abstract":"<p>Integrated satellite terrestrial networks (ISTNs) are emerging as a promising next-generation communication technology, for example, B5G and 6G, with low-earth orbit (LEO) satellites playing a growing role. However, the complex and unique characteristics of ISTNs make them more susceptible to cyberattacks. Recently, the use of drones for public and private services has increased the risk of eavesdropping on LEO satellite links. Such scenario presents an extremely challenging environment due to dynamic nature of LEO satellite and drone along with atmospheric attenuation at sub-THz frequencies. This study proposes a novel adaptive power-bandwidth cooperative scheme designed to mitigate the likelihood of eavesdropping attacks on LEO satellite links communicating with a ground station when a drone is within the line of sight. The mathematical algorithm dynamically adapts the resources to maximize the normalized secrecy capacity in this challenging scenario while maintaining a reasonable signal-to-noise ratio (SNR) at the legitimate receiver. The adaptive scheme involves strategic cooperation with a nearby terrestrial third party to amplify and forward the satellite signal to the ground station receiver. The simulation results demonstrate the effectiveness of the proposed algorithm, showing significant improvements (> 70%) compared to the non-adaptive scheme over a wide range of elevation angles.</p>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"43 1","pages":"10-22"},"PeriodicalIF":0.9,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/sat.1538","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Error Performance of a NOMA-Based Satellite Communication System 基于noma的卫星通信系统误差性能研究

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-09-26 DOI: 10.1002/sat.1537

Priyanka Prasad, Arti MK, Aarti Jain

引用次数: 0