TY - JOUR
T1 - RIS-Assisted Space-Air-Ground Integrated Networks
T2 - New Horizons for Flexible Access and Connectivity
AU - Bariah, Lina
AU - Mohjazi, Lina
AU - Abumarshoud, Hanaa
AU - Selim, Bassant
AU - Muhaidat, Sami
AU - Tatipamula, Mallik
AU - Imran, Muhammad Ali
AU - Haas, Harald
N1 - Publisher Copyright:
IEEE
PY - 2022
Y1 - 2022
N2 - Space-air-ground integrated network (SAGIN) has emerged as a paradigm shifting architecture that offers largescale, flexible wireless coverage and seamless, high-rate connectivity to complement terrestrial communications. Nonetheless, unlocking the potentials of SAGIN is subject to addressing nontrivial challenges associated with their inherent time-variability, self-organization, and heterogeneity. Meanwhile, the concept of reconfigurable intelligent surfaces (RISs) is recognized as a disruptive technology that supports an unprecedented control of electromagnetic waves propagation and potentially offers significant enhancements in spectral efficiency, coverage expansion, and security, all achieved in a low-cost and energy-efficient manner. We anticipate that the integration of RISs into SAGIN will not only play a fundamental role in improving the quality of interand intra- layer communications, but will also provide complex interactions among the three network segments, and hence, opens the horizons for a new breed of applications across all industries. In this article, we explore the underlying opportunities and challenges of integrating RIS-enabled communications into SAGIN, and present a forward-looking overview of the crosslayer operational elements supported by RISs. Finally, we outline major enabling technologies and present a look ahead toward addressing open research issues.
AB - Space-air-ground integrated network (SAGIN) has emerged as a paradigm shifting architecture that offers largescale, flexible wireless coverage and seamless, high-rate connectivity to complement terrestrial communications. Nonetheless, unlocking the potentials of SAGIN is subject to addressing nontrivial challenges associated with their inherent time-variability, self-organization, and heterogeneity. Meanwhile, the concept of reconfigurable intelligent surfaces (RISs) is recognized as a disruptive technology that supports an unprecedented control of electromagnetic waves propagation and potentially offers significant enhancements in spectral efficiency, coverage expansion, and security, all achieved in a low-cost and energy-efficient manner. We anticipate that the integration of RISs into SAGIN will not only play a fundamental role in improving the quality of interand intra- layer communications, but will also provide complex interactions among the three network segments, and hence, opens the horizons for a new breed of applications across all industries. In this article, we explore the underlying opportunities and challenges of integrating RIS-enabled communications into SAGIN, and present a forward-looking overview of the crosslayer operational elements supported by RISs. Finally, we outline major enabling technologies and present a look ahead toward addressing open research issues.
KW - Market research
KW - Orbits
KW - Reliability
KW - Satellite broadcasting
KW - Satellites
KW - Space-air-ground integrated networks
KW - Wireless communication
UR - http://www.scopus.com/inward/record.url?scp=85139502547&partnerID=8YFLogxK
U2 - 10.1109/MNET.123.2100761
DO - 10.1109/MNET.123.2100761
M3 - Article
AN - SCOPUS:85139502547
SN - 0890-8044
SP - 1
EP - 8
JO - IEEE Network
JF - IEEE Network
ER -