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001-es BibID:	BIBFORM099480
035-os BibID:	(WOS)000754373600001 (Scopus)85122067881
Első szerző:	Butt, Amir Aziz
Cím:	Analysis of Key Establishment Techniques for Secure D2D Communication in Emerging 5G Cellular Networks / Amir Aziz Butt, Gohar Rehman Chughta, Asif Kabir, Zahid Mahood, Zain ul Abidin Jafri, Judit Oláh
Dátum:	2021
ISSN:	1335-1788
Megjegyzések:	Device-to-Device (D2D) communication as part of emerging 5G wireless networks presents a new paradigm for enhancing the performance of traditional cellular networks. The number of devices connected over the internet is dramatically increasing, and cellular operators are struggling to harness the overwhelming data traffic on their networks. D2D communication in a cellular network allows two cellular devices in close proximity to communicate directly with each other without going through the base station. D2D communication faces various challenges that include device discovery, resource allocation, interference and security; however, the security aspects of D2D are not sufficiently addressed. Due to limited computing capability and energy-constrained D2D devices, effective and lightweight security solutions are required for enabling successful D2D capability. To secure D2D communication, session key establishment is the most vital task. Public Key Cryptography (PKC) is the most widely used cryptosystem and have numerous security applications such as encryption, digital signature, and key exchange. This work analyses the performance of three PKC protocols that are commonly used for session key establishment and exchange, namely, Diffie-Hellman (DH), Rivest-Shamir-Adleman (RSA) and Elliptic Curve Diffie-Hellman (ECDH), with a focus on D2D communication. We performed extensive simulations for DH, RSA and ECDH, in D2D communication scenarios using OMNET++ simulator and explored the effect of various network factors on key establishment delays such as network size, the impact of interference between D2D pairs and the effect of interference from cellular users upon D2D users as well. The results reported in this paper can provide significant insight in assessing the suitability of DH, RSA and ECDH for the key establishment for D2D in 5G networks.
Tárgyszavak:	Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Acta Montanistica Slovaca. - 26 : 3 (2021), p. 395-403. -
További szerzők:	Chughta, Gohar Rehman Kabir, Asif Mahood, Zahid Jafri, Zain ul Abidin Oláh Judit (1973-) (agrárközgazdász, logisztika)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM094558
035-os BibID:	(WOS)000653449500005 (Scopus)85107443743
Első szerző:	Kabir, Asif
Cím:	Energy-aware caching and collaboration for green communication systems / Asif Kabir, Syed Mushhad Gilani, Gohar Rehmanc, S. Sabath H., József Popp, Muhammad Arshad Shehzad Hassan, Judit Oláh
Dátum:	2021
ISSN:	1335-1788
Megjegyzések:	Social networks and mobile applications tend to enhance the need for high-quality content access. To meet the growing demand for data services in 5G cellular networks, it is important to develop effective content caching and distribution techniques, to reduce redundant data transmission and thereby improve network efficiency significantly. It is anticipated that energy harvesting and self-powered Small Base Stations' (SBS) are the rudimentary constituents of next-generation cellular networks. However, uncertainties in harvested energy are the primary reasons to opt for energy-efficient (EE) power control schemes to reduce SBS energy consumption and ensure the quality of services for users. Using edge collaborative caching, such EE design can also be achievable via the use of the content cache, decreasing the usage of capacity limited SBSs backhaul and reducing energy utilisation. Renewable energy (RE) harvesting technologies can be leveraged to manage the huge power demands of cellular networks. To reduce carbon footprint and improve energy efficiency, we tailored a more practical approach and propose green caching mechanisms for content distribution that utilise the content caching and renewable energy concept. Simulation results and analysis provide key insights that the proposed caching scheme brings a substantial improvement regarding content availability, cache storage capacity at the edge of cellular networks, enhances energy efficiency, and increases cache collaboration time up to 24%. Furthermore, self-powered base stations and energy harvesting are an ultimate part of next-generation wireless networks, particularly in terms of optimum economic sustainability and green energy in developing countries for the evolution of mobile networks.
Tárgyszavak:	Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Acta Montanistica Slovaca. - 26 : 1 (2021), p. 47-59. -
További szerzők:	Gilani, Syed Mushhad Mustuzhar Rehmanc, Gohar Sabath H. S. Popp József (1955-) (közgazdász) Shehzad Hassan, Muhammad Arshad Oláh Judit (1973-) (agrárközgazdász, logisztika)
Internet cím:	Szerző által megadott URL Intézményi repozitóriumban (DEA) tárolt változat DOI
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