International Journal of Satellite Communications and Networking最新文献_第10页

LEO satellite constellations configuration based on the Doppler effect in laser intersatellite links 基于激光星间链路多普勒效应的低地轨道卫星星座配置

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-05-12 DOI: 10.1002/sat.1520

Kaouther Boumalek, Skander Aris, Shu Ting Goh, Seyed A. Zekavat, Malek Benslama

{"title":"LEO satellite constellations configuration based on the Doppler effect in laser intersatellite links","authors":"Kaouther Boumalek, Skander Aris, Shu Ting Goh, Seyed A. Zekavat, Malek Benslama","doi":"10.1002/sat.1520","DOIUrl":"10.1002/sat.1520","url":null,"abstract":"<div>\u0000 \u0000 <p>This paper presents low Earth orbit (LEO) satellite constellation configuration based on the performance of Doppler effect in laser intersatellite links (LISLs). It studies the impact of the LEO constellation's parameters on the performance of the Doppler effect in LISLs. The paper aims to develop LEO satellite constellation configurations that evolve LISLs with minimal Doppler shift. It evaluates the impact of the variation of the relative distance, the inclination angle of the LEO constellation orbital planes, the orbital planes number in the LEO constellation, and the altitude on the performance of Doppler wavelength shift (DWS) in LISLs, for different operating laser wavelengths (OLWs) with respect to two possible intersatellite links (ISL) connection modes within the constellation, straight ISL (n-to-n) and inclined ISL (n-to-n − 1). n is the order of the satellite in the orbital plane. Simulations are conducted to evaluate the performance of these configurations in terms of altitude, OLW, inclination angle, and the number of orbital planes. In addition, both OneWeb and Starlink constellations are studied to evaluate DWS performance. The study demonstrates that DWS decreases either with the diminution of the relative distance between linked LEO satellites, the inclination of LEO constellation, and the OLW, or with the augmentation of the orbital planes number and altitude. Moreover, the overall DWS between two LEO satellites in the proposed constellation is at least 50% lower than the constellation configuration in other literature. The paper proposes the LEO constellation's configurations that perform LISLs with less possible Doppler effect by optimizing the LEO constellation parameters that impact the Doppler effect. The result of this study helps in the early stage of LEO satellite constellation designing in terms of payload simplicity and cost.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"42 5","pages":"397-414"},"PeriodicalIF":0.9,"publicationDate":"2024-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140932634","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

Joint altitude and beamwidth optimization for LEO satellite-based IoT constellation 低地轨道卫星物联网星座的联合高度和波束宽度优化

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-05-10 DOI: 10.1002/sat.1518

Hong Tao, Wang Gang, Ding Xiaojin, Zhang Gengxin

{"title":"Joint altitude and beamwidth optimization for LEO satellite-based IoT constellation","authors":"Hong Tao, Wang Gang, Ding Xiaojin, Zhang Gengxin","doi":"10.1002/sat.1518","DOIUrl":"10.1002/sat.1518","url":null,"abstract":"<div>\u0000 \u0000 <p>Low Earth Orbit (LEO) satellite-based Internet of Things (IoT) has become a hot topic in IoT networks due to the ability of global coverage, especially in remote areas. How to design a commercial LEO satellite-based constellation to meet the IoT traffic requirement remains an open problem. In this paper, we propose a throughput optimization algorithm for LEO satellite-based IoT networks meanwhile reducing the number of LEO satellite. Based on stochastic geometry theory, a closed-form expression is derived for the throughput of a dynamic LEO satellite-based IoT networks when LEO satellite equips with capture effect (CE) receiver and successive interference cancelation (SIC) receiver, respectively. Furthermore, a joint altitude and beamwidth optimization problem is formulated under the constraint of Walker constellation to optimize the throughput and the number of LEO satellites. To solve this multi-objective optimization problem, we design an iterative non-dominated sorting genetic algorithm II (NSGA-II) for the rapid development of IoT traffic. Simulation results show that our proposed algorithm can effectively improve the throughput performance of random access (RA) protocol in LEO satellite-based IoT networks compared to benchmark problems.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"42 5","pages":"354-373"},"PeriodicalIF":0.9,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140932631","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

Energy-efficient physical layer security schemes for low Earth orbit satellite systems 低地球轨道卫星系统的高能效物理层安全方案

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-05-09 DOI: 10.1002/sat.1519

Satya Chan, Sooyoung Kim, Hee Wook Kim, Bon-Jun Ku, Daesub Oh

{"title":"Energy-efficient physical layer security schemes for low Earth orbit satellite systems","authors":"Satya Chan, Sooyoung Kim, Hee Wook Kim, Bon-Jun Ku, Daesub Oh","doi":"10.1002/sat.1519","DOIUrl":"10.1002/sat.1519","url":null,"abstract":"<p>This paper introduces four proposals to enhance physical layer security (PLS) in low Earth orbit (LEO) satellite systems. The first proposal leverages the Alamouti code aided by artificial noise (AN) and involves the collaborative use of two LEO satellites, ensuring secure downlink transmission. Its efficiency is further enhanced when implementing a power-balanced Alamouti code. The second PLS proposal capitalizes on an reconfigurable intelligent surface (RIS) to introduce interference to potential eavesdroppers. As the RIS manages the reflected channel, this security measure is achieved without necessitating additional transmit power or receiver operations. The third proposal integrates the first and second solutions, resulting in improved secrecy rates compared to the individual proposals, nearly reaching the maximum achievable rate. The fourth proposal is based on a relay-based method, securing all transmission links from the satellite to the relay and from the satellite and relay to the legitimate user. The secrecy performance simulation results presented in the paper demonstrate the remarkable effectiveness of the proposed solutions.</p>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"42 5","pages":"374-396"},"PeriodicalIF":0.9,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/sat.1519","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140932835","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

Rethinking LEO constellations routing 重新思考低地轨道星座的路由选择

IF 1.6 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-04-30 DOI: 10.1002/sat.1514

Paul Grislain, Alexia Auddino, Anna Barraqué, François Lamothe, Oana Hotescu, Jérôme Lacan, José Radzik, Emmanuel Lochin

引用次数: 0

Efficient and quantum-secure authenticated key exchange scheme for mobile satellite communication networks 移动卫星通信网络的高效量子安全认证密钥交换方案

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-04-26 DOI: 10.1002/sat.1516

Dheerendra Mishra, Purva Rewal, Komal Pursharthi

{"title":"Efficient and quantum-secure authenticated key exchange scheme for mobile satellite communication networks","authors":"Dheerendra Mishra, Purva Rewal, Komal Pursharthi","doi":"10.1002/sat.1516","DOIUrl":"10.1002/sat.1516","url":null,"abstract":"<div>\u0000 \u0000 <p>The mobile satellite communication (MSC) system is a vital communication method in which mobile users and network control centers connect via satellites. Since the satellite's communication is wireless, communication security is a critical factor to ensure accountable communication. Key exchange and authentication (KEA) mechanism is widely used to achieve data security for data transmitted in an insecure or open channel. Different authentication systems are suggested in the last many years to establish safe communication, whereas most existing security protocols are based on factorization or discrete logarithm. However, these systems are no longer reliable by Shor's algorithm as any discrete logarithm and factorization can be resolved in polynomial time on quantum computers. Thus, developing a quantum secure KEA protocol for MSC systems is necessary. In this direction, recently a ring learning with an error-based KEA technique is proposed to ensure a quantum-safe environment. This scheme is quantum-safe and satisfies desirable security attributes but has low efficiency in computation and communication. Moreover, establishing a secure session requires six communications among involved entities. As a result, replay attack detection at an early stage is not possible for the central authority (server), which could delay the server response, and the adversary gets the advantage of drawing a denial of service scenario for authorized entities. We propose a lattice-based KEA protocol for the MSC system to improve computation, communication efficiency, and early-stage replay attack detection. The security analysis of the proposed scheme is presented in the random oracle model. Calculation of performance is also presented to observe advantages in computation and communication overhead.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"42 4","pages":"313-328"},"PeriodicalIF":1.7,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140800082","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

5G new radio multiuser precoding in geostationary satellite networks 地球静止卫星网络中的 5G 新无线电多用户预编码

IF 1.6 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-04-22 DOI: 10.1002/sat.1515

Xavier Artiga, Miguel Ángel Vázquez

{"title":"5G new radio multiuser precoding in geostationary satellite networks","authors":"Xavier Artiga, Miguel Ángel Vázquez","doi":"10.1002/sat.1515","DOIUrl":"10.1002/sat.1515","url":null,"abstract":"<p>The multiuser precoding procedures standardized by the 3rd Generation Partnership Project (3GPP) for new radio (NR) represent a new opportunity to realize satellite precoding for capacity improvement, given the integration of non-terrestrial networks in the 3GPP framework. This work analyses and numerically evaluates them for the geostationary satellite scenarios consolidated by the 3GPP. It shows that the preferred precoding matrix indicated by NR codebooks is not able to handle properly the inter-beam interference and should only be used to estimate the propagation channel. To this aim, we propose the use of modified type II port selection codebooks reporting on the strongest beams, which correspond to the higher interferences. Since the obtention of high precoding gains requires the operation in rather high signal-to-noise regimes and the proper estimation of the interfering contributions from many beams, we propose to enlarge the maximum number of beams reported by each precoding matrix indicator (PMI) report, currently limited to four. As alternative, we also evaluate a sequential multi-report framework considering the effects of channel-state information aging and the user equipment (UE) processing times. It preserves the current limits on the number of reported beams but increases the system overhead signalling. The quantization of estimated coefficients is also analysed, not only from the overhead point of view but also to properly report weak interferers corresponding to distant beams, due to the increase in the number of reported beams. Moreover, we identify the minimum interference power a UE should be able to detect to achieve the theoretical large precoding gains.</p>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"44 1","pages":"60-72"},"PeriodicalIF":1.6,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/sat.1515","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140675286","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

Collaborative interference avoidance technology in GEO-LEO co-existing satellite system GEO-LEO 共存卫星系统中的协同干扰规避技术

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-04-18 DOI: 10.1002/sat.1511

Mengmin He, Gaofeng Cui, Mengjing Wu, Weidong Wang

{"title":"Collaborative interference avoidance technology in GEO-LEO co-existing satellite system","authors":"Mengmin He, Gaofeng Cui, Mengjing Wu, Weidong Wang","doi":"10.1002/sat.1511","DOIUrl":"10.1002/sat.1511","url":null,"abstract":"<div>\u0000 \u0000 <p>Recently, the Low Earth Orbit (LEO) satellite and Geostationary Earth Orbit (GEO) satellites share the same frequency to enhance spectrum efficiency in response to the scarcity of spectral resources. However, overlapping coverage areas emerge when LEO-GEO and LEO-LEO beams cover the same ground area in the GEO-LEO co-existing satellite system. Thus, the GEO-LEO inter-system interference and the LEO intra-system interference are generated, which leads to more severe and complex interference. To solve the co-channel interference problem without sacrificing the performance of the LEO system, a collaborative interference avoidance technology is proposed for the GEO-LEO co-existing satellite system. Firstly, the LEO satellite and user regrouping strategy (SURS) is employed to effectively avoid severe co-channel interference by changing service satellites. Then, based on regrouping satellite and user pairs, a proximal policy optimization (PPO)-based deep reinforcement learning (DRL) method is adopted to realize further continuous beam pointing optimization (BPO) of the LEO user antenna and reduce the co-channel interference. Finally, simulation results verify that the proposed scheme can achieve the goal of interference mitigation and continuous service.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"42 4","pages":"257-272"},"PeriodicalIF":1.7,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140630695","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

Joint beam power and pointing management in multi-beam low earth orbit and low earth orbit co-existing satellite system 多波束低地轨道和低地轨道共存卫星系统中的联合波束功率和指向管理

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-04-12 DOI: 10.1002/sat.1509

Mengmin He, Gaofeng Cui, Mengjing Wu, Weidong Wang

{"title":"Joint beam power and pointing management in multi-beam low earth orbit and low earth orbit co-existing satellite system","authors":"Mengmin He, Gaofeng Cui, Mengjing Wu, Weidong Wang","doi":"10.1002/sat.1509","DOIUrl":"https://doi.org/10.1002/sat.1509","url":null,"abstract":"<div>\u0000 \u0000 <p>Recently, the low earth orbit (LEO) satellite has attracted much attention due to its advantages of low latency and construction costs. However, the scarcity of frequency spectrum resources has resulted in these satellites sharing the same spectrum to provide services for ground users. So, challenges such as overlapping beam coverage and inter-beam interference occur in the multi-beam LEO satellite coexistence scenario. Therefore, this paper focuses on the issue of interference coexistence in LEO and LEO (LEO–LEO) co-existing scenario, where the initially established system is the primary system, and the later established system is the secondary system. The interference coexistence problem is modeled as a multi-objective optimization problem. The joint beam power and pointing management (JBPPM) based on particle swarm optimization (PSO) is proposed. The power control is applied to the LEO satellites in the secondary system to reduce the interference to the primary system user. Meanwhile, beam pointing optimization is adopted by the LEO users in the secondary system to avoid interference from the primary system and ensure the minimum communication ability. The simulation results verify that the proposed technique can adapt to various coexistence conditions and outperform the existing method.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"42 3","pages":"217-231"},"PeriodicalIF":1.7,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140546814","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

An intelligent load balancing algorithm for 5G-satellite networks 面向 5G 卫星网络的智能负载平衡算法

IF 0.9 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-04-11 DOI: 10.1002/sat.1517

Mobolanle Bello, Prashant Pillai, Ali Safaa Sadiq

{"title":"An intelligent load balancing algorithm for 5G-satellite networks","authors":"Mobolanle Bello, Prashant Pillai, Ali Safaa Sadiq","doi":"10.1002/sat.1517","DOIUrl":"10.1002/sat.1517","url":null,"abstract":"<p>Cellular networks are projected to deal with an immense rise in data traffic, as well as an enormous and diverse device, plus advanced use cases, in the nearest future; hence, future 5G networks are being developed to consist of not only 5G but also different radio access technologies (RATs) integrated. In addition to 5G, the user's device (UD) will be able to connect to the network via LTE, WiMAX, WiFi, Satellite and other technologies. On the other hand, Satellite has been suggested as a preferred network to support 5G use cases. However, achieving load balancing is essential to guarantee an equal amount of traffic distributed between different RATs in a heterogeneous wireless network; this would enable optimal utilisation of the radio resources and lower the likelihood of call blocking/dropping. This study presented an artificial intelligent-based application in heterogeneous wireless networks and proposed an enhanced particle optimisation (EPSO) algorithm to solve the load balancing problem in 5G-Satellite networks. The algorithm uses a call admission control strategy to admit users into the network to ensure that users are evenly distributed on the network. The proposed algorithm was compared with the Artificial Bee Colony and Simulated Annealing algorithm using three performance metrics: throughput, call blocking and fairness. Finally, based on the experimental findings, results outcomes were analysed and discussed.</p>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"42 5","pages":"329-353"},"PeriodicalIF":0.9,"publicationDate":"2024-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/sat.1517","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568913","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

CG-FlexBeamOpt: Advanced solution methodology for high throughput GEO satellite beam laydown and resource allocation CG-FlexBeamOpt：用于高吞吐量地球同步轨道卫星波束铺设和资源分配的先进解决方案方法学

IF 1.7 4区计算机科学

International Journal of Satellite Communications and Networking Pub Date : 2024-04-09 DOI: 10.1002/sat.1513

Ryan Li, Angus Gaudry, Vicky Mak-Hau

{"title":"CG-FlexBeamOpt: Advanced solution methodology for high throughput GEO satellite beam laydown and resource allocation","authors":"Ryan Li, Angus Gaudry, Vicky Mak-Hau","doi":"10.1002/sat.1513","DOIUrl":"10.1002/sat.1513","url":null,"abstract":"<p>Modern satellite communication systems are designed to serve dispersed users with changing operational requirements. Allocating resources to meet these requirements becomes highly complex when the size, location, and allocated frequency of satellite beams are flexible. We developed solution techniques that generate feasible beam patterns and frequency allocations to maximize the total demand met across all users. In our approach, an integer program selects an optimal set of beams from a heuristically generated pool of feasible candidate beams. The challenge is in how to efficiently build a pool of good quality candidate beams from exponentially many possible solutions. An innovative column generation-style heuristic to generate mathematically justifiable beams is presented to address this challenge. We also derived two other heuristic candidate beam generation algorithms to compare and contrast performance and robustness characteristics of different algorithmic choices. We tested the performance of our three new approaches on 12 operational instances that vary in user distribution, user numbers, and demand distribution. While the methods performed differently under varying operational scenarios, the column generation-based methods provided the best trade-off between computation time and solution quality in most cases. We further tested our two best performing algorithms for scalability. Our column generation-based methods were able to provide good quality solutions with up to 400 beams and 5,000 users. Our work provides valuable insights for real-life implementation: an end-user of our system can select the solution approach based on their business need, computational (time) budget, and the desired solution quality.</p>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"42 4","pages":"286-312"},"PeriodicalIF":1.7,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/sat.1513","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568882","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