2020
Strinati, Emilio Calvanese; Barbarossa, Sergio; Choi, Taesang; Pietrabissa, Antonio; Giuseppi, Alessandro; Santis, Emanuele De; Vidal, Josep; Becvar, Zdenek; Haustein, Thomas; Cassiau, Nicolas; Costanzo, Francesca; Kim, Junhyeong; Kim, Ilgyu
6G in the Sky: On-Demand Intelligence at the Edge of 3D Networks Journal Article
In: ETRI Journal, vol. 42, no. 5, pp. 643–657, 2020.
Abstract | Links | BibTeX | Tags: 3D connectivity, 3D networks, 3D services, 5G, 6G, B5G, high-altitude platform stations, mobile edge computing, non-terrestrial communications, satellite, unmanned aerial vehicle
@article{Strinati2020,
title = {6G in the Sky: On-Demand Intelligence at the Edge of 3D Networks},
author = {Emilio Calvanese Strinati and Sergio Barbarossa and Taesang Choi and Antonio Pietrabissa and Alessandro Giuseppi and Emanuele {De Santis} and Josep Vidal and Zdenek Becvar and Thomas Haustein and Nicolas Cassiau and Francesca Costanzo and Junhyeong Kim and Ilgyu Kim},
doi = {10.4218/etrij.2020-0205},
year = {2020},
date = {2020-10-20},
urldate = {2020-10-20},
journal = {ETRI Journal},
volume = {42},
number = {5},
pages = {643--657},
abstract = {Sixth generation will exploit satellite, aerial, and terrestrial platforms jointly to improve radio access capability and unlock the support of on-demand edge cloud services in three-dimensional (3D) space, by incorporating mobile edge computing (MEC) functionalities on aerial platforms and low-orbit satellites. This will extend the MEC support to devices and network elements in the sky and forge a space-borne MEC, enabling intelligent, personalized, and distributed on-demand services. End users will experience the impression of being surrounded by a distributed computer, fulfilling their requests with apparently zero latency. In this paper, we consider an architecture that provides communication, computation, and caching (C3) services on demand, anytime, and everywhere in 3D space, integrating conventional ground (terrestrial) base stations and flying (non-terrestrial) nodes. Given the complexity of the overall network, the C3 resources and management of aerial devices need to be jointly orchestrated via artificial intelligence-based algorithms, exploiting virtualized network functions dynamically deployed in a distributed manner across terrestrial and non-terrestrial nodes.},
keywords = {3D connectivity, 3D networks, 3D services, 5G, 6G, B5G, high-altitude platform stations, mobile edge computing, non-terrestrial communications, satellite, unmanned aerial vehicle},
pubstate = {published},
tppubtype = {article}
}
Jaeckel, Stephan; Raschkowski, Leszek; Thiele, Lars
A 5G-NR Satellite Extension for the QuaDRiGa Channel Model Proceedings Article Forthcoming
In: IEEE 93rd Vehicular Technology Conference: VTC2021-Spring, Forthcoming.
Abstract | Links | BibTeX | Tags: 5G, channel model, QuaDRiGa, satellite
@inproceedings{Jaeckel2020,
title = {A 5G-NR Satellite Extension for the QuaDRiGa Channel Model},
author = {Stephan Jaeckel and Leszek Raschkowski and Lars Thiele},
url = {https://arxiv.org/abs/2010.01002},
year = {2020},
date = {2020-10-01},
urldate = {2020-10-01},
booktitle = {IEEE 93rd Vehicular Technology Conference: VTC2021-Spring},
abstract = {Low Earth orbit (LEO) satellite networks will become an integral part of the global telecommunication infrastructure. Modeling the radio-links of these networks and their interaction with existing terrestrial systems is crucial for the design, planning and scaling of these networks. The 3rd generation partnership project (3GPP) addressed this by providing guideline for such a radio-channel model. However, the proposed model lacks a satellite orbit model and has some inconsistencies in the provided parameters. This is addressed in this paper. We provide a non-geostationary-satellite model that can be integrated into geometry-based stochastic channel models (GSCMs) such as QuaDRiGa. We then use this model to obtain the GSCM parameters from a simplified environment model and compare the results to the 3GPP parameter-set. This solves the inconsistencies, but our simplified approach does not consider many propagation effects. Future work must therefore rely on measurements or accurate Ray-tracing models to obtain the parameters.},
keywords = {5G, channel model, QuaDRiGa, satellite},
pubstate = {forthcoming},
tppubtype = {inproceedings}
}
Kim, Junhyeong; Casati, Guido; Pietrabissa, Antonio; Giuseppi, Alessandro; Strinati, Emilio Calvanese; Cassiau, Nicolas; Noh, Gosan; Chung, Heesang; Kim, Ilgyu; Thary, Marjorie; Houssin, Jean-Michel; Pigni, Federico; Colombero, Sylvain; Zotto, Pierre Dal; Raschkowski, Leszek; Jaeckel, Stephan
5G-ALLSTAR: An Integrated Satellite-Cellular System for 5G and Beyond Proceedings Article
In: 2020 IEEE Wireless Communications and Networking Conference Workshops (WCNCW), pp. 1-6, 2020.
Abstract | Links | BibTeX | Tags: 5G-ALLSTAR, millimeter wave, multi-connectivity, New Radio, satellite, vehicular communications
@inproceedings{Kim2020,
title = {5G-ALLSTAR: An Integrated Satellite-Cellular System for 5G and Beyond},
author = {Junhyeong Kim and Guido Casati and Antonio Pietrabissa and Alessandro Giuseppi and Emilio Calvanese Strinati and Nicolas Cassiau and Gosan Noh and Heesang Chung and Ilgyu Kim and Marjorie Thary and Jean-Michel Houssin and Federico Pigni and Sylvain Colombero and Pierre Dal Zotto and Leszek Raschkowski and Stephan Jaeckel},
doi = {10.1109/WCNCW48565.2020.9124751},
year = {2020},
date = {2020-04-01},
urldate = {2020-04-01},
booktitle = {2020 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)},
pages = {1-6},
abstract = {This paper provides an overview of recent research activities of the 5G AgiLe and fLexible integration of SaTellite And cellulaR (5G-ALLSTAR) project which aims to develop Multi-Connectivity technology that integrates the cellular and satellite networks to provide seamless, reliable and ubiquitous broadband services. 5G-ALLSTAR also entails developing millimeter-wave (mmWave) 5G New Radio (NR)-based cellular access system and investigating the feasibility of NR-based satellite access for providing broadband and reliable 5G services. In addition, spectrum sharing between cellular and satellite networks is studied. With all the technologies developed, 5G-ALLSTAR will showcase the first fully integrated satellite and cellular prototype system for 5G and beyond 5G (B5G) services at a big event (e.g., sporting event like Roland-Garros) in 2021. This paper also provides a preliminary techno-economic analysis on potential use cases targeting vertical markets, and introduces recent standardization activities of relevance.},
keywords = {5G-ALLSTAR, millimeter wave, multi-connectivity, New Radio, satellite, vehicular communications},
pubstate = {published},
tppubtype = {inproceedings}
}
Cassiau, Nicolas; Noh, Gosan; Jaeckel, Stephan; Raschkowski, Leszek; Houssin, Jean-Michel; Combelles, Laurent; Thary, Marjorie; Kim, Junhyeong; Doré, Jean-Baptiste; Laugeois, Marc
Satellite and terrestrial multi-connectivity for 5G: making spectrum sharing possible Proceedings Article
In: IEEE Wireless Communications and Networking Conference (WCNC 2020), Seoul, South Korea, 2020.
Abstract | Links | BibTeX | Tags: 5G, multi-connectivity, satellite, spectrum sharing
@inproceedings{cassiau:hal-02864733,
title = {Satellite and terrestrial multi-connectivity for 5G: making spectrum sharing possible},
author = {Nicolas Cassiau and Gosan Noh and Stephan Jaeckel and Leszek Raschkowski and Jean-Michel Houssin and Laurent Combelles and Marjorie Thary and Junhyeong Kim and Jean-Baptiste Dor\'{e} and Marc Laugeois},
url = {https://hal.archives-ouvertes.fr/hal-02864733},
year = {2020},
date = {2020-01-01},
urldate = {2020-01-01},
booktitle = {IEEE Wireless Communications and Networking Conference (WCNC 2020)},
address = {Seoul, South Korea},
abstract = {This paper reports the first results of the 5G-ALLSTAR project [1] aiming at providing solutions and enablers for spectrum sharing in a 5G cellular and satellite multi-connectivity context. First, we present an exhaustive study of the frequency bands eligible for these systems in the short and medium term. A ray-tracing based and a geometry-based stochastic channel models developed in the project are then described. These models can be used to simulate systems involving terrestrial and non-terrestrial networks. We then describe three different ways investigated in the project for managing interference: signal processing (hardware implementation of a 5G New Radio compatible physical layer), beamforming (steering and switching beams in order to avoid the interference while preserving the spectral efficiency) and radio resource management (tool designed for joint optimization of satellite and terrestrial resource sharing).},
keywords = {5G, multi-connectivity, satellite, spectrum sharing},
pubstate = {published},
tppubtype = {inproceedings}
}
Noh, Gosan; Chung, Heesang; Kim, Ilgyu
Outage Analysis for Terrestrial-Satellite Spectrum Sharing Journal Article
In: IEEE Communications Letters, pp. 1-1, 2020, ISSN: 1558-2558.
Abstract | Links | BibTeX | Tags: 5G, interference, outage analysis, satellite
@article{Noh2020,
title = {Outage Analysis for Terrestrial-Satellite Spectrum Sharing},
author = {Gosan Noh and Heesang Chung and Ilgyu Kim},
doi = {10.1109/LCOMM.2020.3006133},
issn = {1558-2558},
year = {2020},
date = {2020-01-01},
urldate = {2020-01-01},
journal = {IEEE Communications Letters},
pages = {1-1},
abstract = {This letter investigates the effect of the interference due to spectrum sharing between terrestrial and satellite systems. Based on a realistic coexistence model, we provide an exact closed-form outage probability expression of the satellite link in the presence of the terrestrial interference. We assume Nakagami fading both for terrestrial and satellite links, with an additional consideration for the shadowed Rician fading satellite link. Numerical results show that uncontrolled terrestrial interference can significantly degrade the outage performance of the satellite link. The obtained formulas are useful in predicting and preventing harmful interference when designing coexistence mechanisms for terrestrial and satellite systems.},
keywords = {5G, interference, outage analysis, satellite},
pubstate = {published},
tppubtype = {article}
}
Choi, Taesang; Won, Seok Ho; Giuseppi, Alessandro; Pietrabissa, Antonio; Kwon, Sungoh
Management and Orchestration Architecture for Integrated Access of Satellite and Terrestrial in 5G Proceedings Article
In: 2020 International Conference on Information Networking (ICOIN), pp. 40-45, 2020, ISSN: 1976-7684.
Abstract | Links | BibTeX | Tags: 5G, Computer architecture, heterogeneous network, high data rate, integrated access, load-balancing, management and orchestration, management standardization, mobility management (mobile radio), multi-connectivity, multiple different radio access technologies, network resources, orchestration architecture, QoS/QoE management, Quality of experience, Quality of service, radio access networks, Rats, reliability, satellite, telecommunication traffic, traffic steering, ultra-low latency
@inproceedings{Choi2020,
title = {Management and Orchestration Architecture for Integrated Access of Satellite and Terrestrial in 5G},
author = {Taesang Choi and Seok Ho Won and Alessandro Giuseppi and Antonio Pietrabissa and Sungoh Kwon},
doi = {10.1109/ICOIN48656.2020.9016484},
issn = {1976-7684},
year = {2020},
date = {2020-01-01},
urldate = {2020-01-01},
booktitle = {2020 International Conference on Information Networking (ICOIN)},
pages = {40-45},
abstract = {Multi-RAT access network, or heterogeneous access network, is considered to be the key enabling technology to satisfy the 5G requirements, such as high data rate, ultra-low latency and reliability. To make efficient use of all the available network resources, various research activities on multi-connectivity have been proposed to simultaneously connect, steer, and orchestrate across multiple different radio access technologies. Standardization of the management and orchestration of multi-connectivity environment, however, has just been initiated, thus further research and development is required. This paper proposes a novel management and orchestration architecture for integrated access of satellite and terrestrial in 5G. It especially focuses on the traffic steering and load-balancing of heterogeneous multi-RAT access environment.},
keywords = {5G, Computer architecture, heterogeneous network, high data rate, integrated access, load-balancing, management and orchestration, management standardization, mobility management (mobile radio), multi-connectivity, multiple different radio access technologies, network resources, orchestration architecture, QoS/QoE management, Quality of experience, Quality of service, radio access networks, Rats, reliability, satellite, telecommunication traffic, traffic steering, ultra-low latency},
pubstate = {published},
tppubtype = {inproceedings}
}
Ma, Lei; Guan, Ke; Yan, Dong; He, Danping; Leonor, Nuno R; Ai, Bo; Kim, Junhyeong
Satellite-Terrestrial Channel Characterization in High-Speed Railway Environment at 22.6 GHz Journal Article
In: Radio Science, vol. 55, no. 3, 2020.
Abstract | Links | BibTeX | Tags: 5G, mmWave, radio propagation, Railway communication, ray-tracing, satellite, Satellite-terrestrial communication
@article{Ma2020,
title = {Satellite-Terrestrial Channel Characterization in High-Speed Railway Environment at 22.6 GHz},
author = {Lei Ma and Ke Guan and Dong Yan and Danping He and Nuno R Leonor and Bo Ai and Junhyeong Kim},
url = {https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019RS006995},
doi = {10.1029/2019RS006995},
year = {2020},
date = {2020-01-01},
urldate = {2020-01-01},
journal = {Radio Science},
volume = {55},
number = {3},
abstract = {Abstract The integration of satellite and terrestrial communication systems plays a vital role in the fifth-generation mobile communication system (5G) for the ubiquitous coverage, reliable service, and flexible networking. Moreover, the millimeter wave (mmWave) communication with large bandwidth is a key enabler for 5G intelligent rail transportation. In this paper, the satellite-terrestrial channel at 22.6 GHz is characterized for a typical high-speed railway (HSR) environment. The three-dimensional model of the railway scenario is reconstructed and imported into the Cloud Ray-Tracing (CloudRT) simulation platform. Based on extensive ray-tracing simulations, the channel for the terrestrial HSR system and the satellite-terrestrial system with two weather conditions are characterized, and the interference between them are evaluated. The results of this paper can help for the design and evaluation for the satellite-terrestrial communication system enabling future intelligent rail transportation.},
keywords = {5G, mmWave, radio propagation, Railway communication, ray-tracing, satellite, Satellite-terrestrial communication},
pubstate = {published},
tppubtype = {article}
}
2019
Lisi, Federico; Losquadro, Giacinto; Tortorelli, Andrea; Ornatelli, Antonio; Donsante, Manuel
Multi-Connectivity in 5G terrestrial-Satellite Networks: the 5G-ALLSTAR Solution Proceedings Article
In: Ka and Broadband Communications, Navigation and Earth Observation Conference, 2019.
Abstract | Links | BibTeX | Tags: 5G, multi-connectivity, satellite
@inproceedings{Lisi2019,
title = {Multi-Connectivity in 5G terrestrial-Satellite Networks: the 5G-ALLSTAR Solution},
author = {Federico Lisi and Giacinto Losquadro and Andrea Tortorelli and Antonio Ornatelli and Manuel Donsante},
url = {https://arxiv.org/abs/2004.00368
http://proceedings.kaconf.org/papers/2019/ka17_2.pdf},
year = {2019},
date = {2019-01-01},
urldate = {2019-01-01},
booktitle = {Ka and Broadband Communications, Navigation and Earth Observation Conference},
journal = {arXiv preprint arXiv:2004.00368},
abstract = {The 5G-ALLSTAR project is aimed at integrating Terrestrial and Satellite Networks for satisfying the highly challenging and demanding requirements of the 5G use cases. The integration of the two networks is a key feature to assure the service continuity in challenging communication situations (e.g., emergency cases, marine, railway, etc.) by avoiding service interruptions. The 5G-ALLSTAR project proposes to develop Multi-Connectivity (MC) solutions in order to guarantee network reliability and improve the throughput and latency for each connection between User Equipment (UE) and network. In the 5G-ALLSTAR vision, we divide the gNB in two entities: 1) gNB-CU (Centralized Unit) and 2) gNB-DU (Distributed Unit) The gNB-CU integrates an innovative Traffic Flow Control algorithm able to optimize the network resources by coordinating the controlled gNB-DUs resources, while implementing MC solutions. The MC permits to connect each UE with simultaneous multiple access points (even different radio access technologies). This solution leads to have independent gNB-DU/s that contain the RLC, MAC and PHY layers. The 5G-ALLSTAR MC algorithms offer advanced functionalities to RRC layer (in the gNB-CU) that is, in turn, able to set up the SDAP, the PDCP and the lower layers in gNB-DU. In this regard, the AI-based MC algorithms, implemented in gNB-CU, by considering the network performances in the UE surrounding environment as well as the UE QoS requirements, will dynamically select the most promising access points able to guarantee the fulfilment of the requirements also enabling the optimal traffic splitting to cope with the connection reliability. In this paper, we present also an innovative AI-based framework, included within the Traffic Flow Control, able to address the MC objectives, by implementing a Reinforcement Learning algorithm in charge of solving the network control problem.},
keywords = {5G, multi-connectivity, satellite},
pubstate = {published},
tppubtype = {inproceedings}
}
Yan, Dong; Yi, Haofan; He, Danping; Guan, Ke; Ai, Bo; Zhong, Zhangdui; Kim, Junhyeong; Chung, Heesang
Channel Characterization for Satellite Link and Terrestrial Link of Vehicular Communication in the mmWave Band Journal Article
In: IEEE Access, vol. 7, pp. 173559-173570, 2019, ISSN: 2169-3536.
Abstract | Links | BibTeX | Tags: 5G, mmWave, radio propagation, ray-tracing, satellite, vehicular communications
@article{Yan2019,
title = {Channel Characterization for Satellite Link and Terrestrial Link of Vehicular Communication in the mmWave Band},
author = {Dong Yan and Haofan Yi and Danping He and Ke Guan and Bo Ai and Zhangdui Zhong and Junhyeong Kim and Heesang Chung},
doi = {10.1109/ACCESS.2019.2956821},
issn = {2169-3536},
year = {2019},
date = {2019-01-01},
urldate = {2019-01-01},
journal = {IEEE Access},
volume = {7},
pages = {173559-173570},
abstract = {In the vision of intelligent transportation, vehicles are expected to feature with advanced applications, such as automatic road enforcement, dynamic traffic light sequence, and autonomous driving. Therefore, real-time and fast dynamic information exchanges are required, and vehicle-to-everything (V2X) communications are highly demanded. In this work, the channel characteristics of vehicular communication are analyzed in the millimeter-wave (mmWave) band at 22.1-23.1 GHz. Specifically, two types of links (the satellite link and the terrestrial link) are considered in urban and highway scenarios with different weather conditions. The ray-tracing simulator together with calibrated electromagnetic parameters is employed to practically generate wideband channels. The key channel parameters of each link including the received power, Rician K -factor, root-mean-square delay spread, and angular spreads are explored. The co-channel interferences between the two links are analyzed as well. The observations and conclusions of this work can be useful for the design of V2X communication technologies.},
keywords = {5G, mmWave, radio propagation, ray-tracing, satellite, vehicular communications},
pubstate = {published},
tppubtype = {article}
}
Pham-Viet, Hung; Kwon, Sungoh; Won, Seok Ho
Current Development of Vector Tracking Loops for Stand-Alone GNSS Receivers in Urban Canyons Proceedings Article
In: KICS Winter Conference 2019, KICS, 2019.
Abstract | Links | BibTeX | Tags: GNSS, satellite, vector tracking loops
@inproceedings{Pham-Viet2019,
title = {Current Development of Vector Tracking Loops for Stand-Alone GNSS Receivers in Urban Canyons},
author = {Hung Pham-Viet and Sungoh Kwon and Seok Ho Won},
url = {https://www.eiric.or.kr/literature/ser_view.php?SnxGubun=INKO\&mode=total\&searchCate=literature\&gu=INME011A9\&cmd=qryview\&SnxIndxNum=221111\&rownum=\&totalCnt=1\&rownum=1\&q1_t=Q3VycmVudCBEZXZlbG9wbWVudCBvZiBWZWN0b3IgVHJhY2tpbmcgTG9vcHMgZm9yIFN0YW5kLUFsb25lIEdOU1MgUmVjZWl2ZXJzIGluIFVyYmFuIENhbnlvbnM=\&listUrl=L3NlYXJjaC9yZXN1bHQucGhwP1NueEd1YnVuPUlOS08mbW9kZT10b3RhbCZzZWFyY2hDYXRlPWxpdGVyYXR1cmUmcTE9Q3VycmVudCUyMERldmVsb3BtZW50JTIwb2YlMjBWZWN0b3IlMjBUcmFja2luZyUyMExvb3BzJTIwZm9yJTIwU3RhbmQtQWxvbmUlMjBHTlNTJTIwUmVjZWl2ZXJzJTIwaW4lMjBVcmJhbiUyMENhbnlvbnM=\&q1=Current+Development+of+Vector+Tracking+Loops+for+Stand-Alone+GNSS+Receivers+in+Urban+Canyons},
year = {2019},
date = {2019-01-01},
urldate = {2019-01-01},
booktitle = {KICS Winter Conference 2019},
publisher = {KICS},
abstract = {Recently, with the development of signal processing methods the accuracy of global navigation satellite system (GNSS) services has been improved. However, in urban environment, since the main challenges are multipath, non-line-ofsight (NLOS), weak signals and low accessibility to satellite in the sky, the positioning is unreliable, inaccuracy, therefore, it decreases the potential for various positioning applications. Vector-based tracking has been applied in modern GNSS receivers as the perfect approach instead of conventional tracking. This paper reviews the literature regarding the performance of vector-based methods applied in GNSS receivers under harsh environments. Under a range of conditions, the vector tracking loops demonstrate their robustness against many error sources in GNSS applications. Moreover, the development as well as the application of different methods based on vector tracking loop also rises a promising for further researches. The goad of paper is to provide the state of art relating to vector tracking loop for future approaches in positioning in urban canyons.},
keywords = {GNSS, satellite, vector tracking loops},
pubstate = {published},
tppubtype = {inproceedings}
}