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Opportunity and challenges of Device-to-Device relaying for IoT connectivity in cellular networks

Cesar Augusto Vargas Anamuro 1, 2
1 ADOPNET - Advanced technologies for operated networks
UR1 - Université de Rennes 1, IMT Atlantique - IMT Atlantique Bretagne-Pays de la Loire, IRISA-D2 - RÉSEAUX, TÉLÉCOMMUNICATION ET SERVICES
Abstract : Massive machine-type communication (mMTC) is one of the main services delivered by the 5G mobile network. mMTC represents a major challenge for 5G network since it is characterized by a large number of low complexity devices thats end small data packets. Moreover, mMTC devices are often battery-powered, and the battery is expected to operate for long periods without being recharged or replaced. Traditional cellular networks, which are designed for human communications, are not energy efficient for this type of service. To address this problem, in this thesis, we study the use of Device-to-Device(D2D) relaying as a complementary transmission. In this approach, the mMTC device can transmit its data using a nearby UE as a relay. First, we calculate the energy consumed in each phase of the communication process for a device located at the cell border that uses LTE-Mtechnology. Then, using a simple model, we compare the energy consumption of cellular and D2D transmission modes, and we determine the optimal relay location. Through the use of stochastic geometry, we analyze the performance of D2D communication with ARQ and CC-HARQ with regard to the transmission success probability, the average number of transmissions, and MTD energy consumption. Finally, we propose an energy-efficient D2D relaying mechanism suitable for mMTC applications thanks to its easy implementation. This mechanism uses a distributed relay selection approach, which prioritizes the selection of the user equipments (UEs) with the best channel qualities. Moreover, we present a tractable model to evaluate the performance of our mechanism.
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Submitted on : Thursday, September 10, 2020 - 10:35:07 AM
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Cesar Augusto Vargas Anamuro. Opportunity and challenges of Device-to-Device relaying for IoT connectivity in cellular networks. Modeling and Simulation. Ecole nationale supérieure Mines-Télécom Atlantique, 2020. English. ⟨NNT : 2020IMTA0196⟩. ⟨tel-02935195⟩

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