The Space-Terrestrial Integrated Network: An Overview

Hu, Yao; Wang, Luyao; Wang, Xiaodong; Lü, Zhou; Liu, Yunjie

doi:10.1109/mcom.2018.1700038

Cited by 187 publications

(68 citation statements)

References 12 publications

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“…GEO satellites serve as the relay nodes in the proposed architecture. 1 The aim is to replace the complicated routing among LEO satellites, especially when the two sides of the communication are far from each other (e.g. one on the east coast of China and the other on the Atlantic).…”

Section: Mobility Managementmentioning

confidence: 99%

“…Compared with terrestrial 5G networks, low earth orbit mobile satellite system (LEO-MSS) have a prominent superiority in global coverage [1] and play a critical role in remote and non-land regions [2] and emergency communications [3]. However, due to the large coverage radius and quick movement of LEO satellites, there are still many challenges in LEO-MSS.…”

Section: Introduction a Motivationmentioning

confidence: 99%

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Forecast Based Handover in an Extensible Multi-Layer LEO Mobile Satellite System

Zhou

2020

IEEE Access

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Low earth orbit mobile satellite system (LEO-MSS) is the major system to provide communication support for the regions beyond the coverage of terrestrial network systems. However, passive handover happens frequently caused by the quick movement of LEO satellites in LEO-MSS. It not only causes the waste of radio resource, but also makes it hard to guarantee the quality of service (QoS), especially for user groups in hot-spot regions. To tackle this problem, we propose an extensible multi-layer network architecture to reduce the handover rate, especially group handover rate by introducing high-altitude platforms (HAPs) and terrestrial relays (TRs) to this system. We then propose a multi-layer handover management framework and also design different handover procedures based on handover forecast for different kinds of handovers according to the proposed architecture and framework to reduce handover delay and signalling cost. Furthermore, we propose a dynamic handover optimization to reduce the dropping probability and guarantee the QoS of mobile terminals. Numerical results show that the proposed architecture reduces group handovers significantly. The proposed handover procedures also provide better performance on delay and signalling cost compared with traditional handover protocols. With the proposed dynamic handover optimization, the proposed handover procedures provide better performance on dropping probability and throughput. The proposed dynamic handover optimization has an excellent performance on dropping probability while guaranteeing the QoS of mobile terminals.

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Section: Mobility Managementmentioning

confidence: 99%

Section: Introduction a Motivationmentioning

confidence: 99%

Forecast Based Handover in an Extensible Multi-Layer LEO Mobile Satellite System

Zhou

2020

IEEE Access

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“…1. Signal-to-interference-plus-noise ratio (SINR mu (n,s)) of the n th mobile user in uplink in Equation (15). 42 2.…”

Section: Power Control Of Mobile Users In Each Small Cell In Uplinkmentioning

confidence: 99%

“…This type of network has many features such as high flexibility and dynamic topology with multiple relaying links to transmit high data rates. 15 Furthermore, there are many satellite service providers that merge with terrestrial equipment such as the Inmarsat system in order to provide MSS to end users. 5 In order to design and structure this type of hybrid satellite-terrestrial network, many standards have been provided in order to the STIN.…”

Section: Introductionmentioning

confidence: 99%

Interference management for spectral coexistence in a heterogeneous satellite network

Hajipour

Shahzadi

Ghazi‐Maghrebi

2020

Satell Commun Network

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Summary With the advent of the fifth generation of mobile radio communication by 2020, there will be many challenges such as increasing service demand with low delay in providing billions of end users called the satellite mobile users. It is expected that terrestrial communication systems will be faced with a dense network having many small cells anywhere and anytime. Therefore, there are some remote regions in the world where terrestrial systems cannot provide any services to end users. Furthermore, because of lack of spectral resources, it is very important that the spectrum is shared between satellite systems and terrestrial equipment by a suitable solution to interference management. In this paper, a heterogeneous satellite network that includes low earth orbit (LEO) satellite constellation and terrestrial equipment is proposed to provide low delay services. In this type of structure, interference management based on transmission power control between LEO satellite systems and mobile users is very important for obtaining high throughput. Moreover, in order to mitigate interference, transmission power control is shown based on noncooperative Stackelberg game under many subgames through pricing‐based algorithm and convex optimization method. Finally, the simulation results show that the performance of this study's system model will be improved through the proposed algorithm.

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“…Despite fast-growing Information and Communication Technology (ICT) segments, insufficient broadband internet access for 3.9 billion people is still a huge digital gap [3] . Exploiting novel network frameworks as non-terrestrial networks and Space-Terrestrial Internet Networks (STIN) benefits agencies and entities with tremendous opportunities for business and sacred missions [4,5] . The HAP system is initiating a novel network providing architecture merging the digital gap through different radiocommunication services as an STIN design under various environments and scenarios.…”

Section: Introductionmentioning

confidence: 99%

Overview of development and regulatory aspects of high altitude platform system

Zhou

Gao

Liu

et al. 2020

Intell. and Converged Netw.

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High Altitude Platform (HAP) systems comprise airborne base stations deployed above 20 km and below 50 km to provide wireless access to devices in large areas. In this paper, two types of applications using HAP systems: one with HAP Station (HAPS) and the other with HAPS as International Mobile Telecommunication (IMT) Base Station (HIBS) are introduced. The HAP system with HAPS has already received wide recognition from the academia and the industry and is considered as an effective solution to provide internet access between fixed points in suburban and rural areas as well as emergencies. HAP systems with HIBS to serve IMT user terminal have just started to draw attention from researchers. The HIBS application is expected to be an anticipate mobile service application complementing the IMT requirement for cell phone or other mobile user terminals in which the service field of HAPS application cannot reach. After describing and characterizing the two types of systems, coexistence studies and simulation results using both the Power Fluxed Density (PFD) mask and separation distance based methods are presented in this paper. This paper also predicts future trends of the evolution paths for the HAP systems along with challenges and possible solutions from the standpoint of system architectures and spectrum regulation.

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The Space-Terrestrial Integrated Network: An Overview

Cited by 187 publications

References 12 publications

Forecast Based Handover in an Extensible Multi-Layer LEO Mobile Satellite System

Forecast Based Handover in an Extensible Multi-Layer LEO Mobile Satellite System

Interference management for spectral coexistence in a heterogeneous satellite network

Overview of development and regulatory aspects of high altitude platform system

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