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Resource Allocation in 5G Cellular IoT Systems with Early Transmissions at the Random Access Phase

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Název: Resource Allocation in 5G Cellular IoT Systems with Early Transmissions at the Random Access Phase
Autoři: Anastasia Daraseliya, Eduard Sopin, Vyacheslav Begishev, Yevgeni Koucheryavy, Konstantin Samouylov
Zdroj: Sensors ; Volume 25 ; Issue 7 ; Pages: 2264
Informace o vydavateli: Multidisciplinary Digital Publishing Institute
Rok vydání: 2025
Sbírka: MDPI Open Access Publishing
Témata: 5G, mMTC, CIoT, random access, early transmissions, delay, optimal resource allocation
Popis: While the market for massive machine type communications (mMTC) is evolving at an unprecedented pace, the standardization bodies, including 3GPP, are lagging behind with standardization of truly 5G-grade cellular Internet-of-Things (CIoT) systems. As an intermediate solution, an early data transmission mechanisms encapsulating the data into the preambles has been recently proposed for 4G/5G Narrowband IoT (NB-IoT) technology. This mechanism is also expected to become a part of future CIoT systems. The aim of this paper is to propose a model for CIoT systems with and without early transmission functionality and assess the optimal distribution of resources at the random access and data transmission phases. To this end, the developed model captures both phases explicitly as well as different traffic composition in downlink and uplink directions. Our numerical results demonstrate that the use of early transmission functionality allows one to drastically decrease the delay of uplink packets by up to 20–40%, even in presence of downlink traffic sharing the same set of resources. However, it also affects the optimal share of resources allocated for random access and data transmission phases. As a result, the optimal performance of 5G mMTC technologies with or without early transmission mode can only be attained if the dynamic resource allocation is implemented.
Druh dokumentu: text
Popis souboru: application/pdf
Jazyk: English
Relation: Internet of Things; https://dx.doi.org/10.3390/s25072264
DOI: 10.3390/s25072264
Dostupnost: https://doi.org/10.3390/s25072264
Rights: https://creativecommons.org/licenses/by/4.0/
Přístupové číslo: edsbas.F64C7A9D
Databáze: BASE
Popis
Abstrakt:While the market for massive machine type communications (mMTC) is evolving at an unprecedented pace, the standardization bodies, including 3GPP, are lagging behind with standardization of truly 5G-grade cellular Internet-of-Things (CIoT) systems. As an intermediate solution, an early data transmission mechanisms encapsulating the data into the preambles has been recently proposed for 4G/5G Narrowband IoT (NB-IoT) technology. This mechanism is also expected to become a part of future CIoT systems. The aim of this paper is to propose a model for CIoT systems with and without early transmission functionality and assess the optimal distribution of resources at the random access and data transmission phases. To this end, the developed model captures both phases explicitly as well as different traffic composition in downlink and uplink directions. Our numerical results demonstrate that the use of early transmission functionality allows one to drastically decrease the delay of uplink packets by up to 20–40%, even in presence of downlink traffic sharing the same set of resources. However, it also affects the optimal share of resources allocated for random access and data transmission phases. As a result, the optimal performance of 5G mMTC technologies with or without early transmission mode can only be attained if the dynamic resource allocation is implemented.
DOI:10.3390/s25072264