Abstract
The new era of IoT brings the necessity of smart synergy for diverse communication and computation entities. The two extremes are, on the one hand, the 5G Ultra-Reliable Low-Latency Communications (URLLC) required for Industrial IoT (IIoT) and Vehicle Communications (V2V, V2I, V2X). While on the other hand, the Ultra-Low Power, Wide-Range, Low Bit-rate Communications, such as Sigfox, LoRa/LoRaWAN, NB-IoT, Cat-M1, etc.; used for smart metering, smart logistics, monitoring, alarms, tracking applications. This extreme variety and diversity must work in synergy, all inter-operating/inter-working with the Internet. The communication solutions must mutually cooperate, but there must be a synergy in a broader sense that includes the various communication solutions and all the processing and storage capabilities from the edge cloud to the deep-cloud. In this paper, we consider a non-orthogonal multiple access (NOMA)-based device to device (D2D) communication system coexisting with a cellular network and utilize Greedy Asynchronous Distributed Interference Avoidance Algorithm (GADIA) for dynamic frequency allocation strategy. We analyze a max–min fairness optimization problem with energy budget constraints to provide a reasonable boundary rate for the downlink to all devices and cellular users in the network for a given total transmit power. A comprehensive simulation and numerical evaluation is performed. Further, we compare the performance of maximum achievable rate and energy efficiency (EE) at a given spectral efficiency (SE) while employing NOMA and orthogonal frequency-division multiple access (OFDMA).
Highlights
A rising consensus in the fifth generation (5G) of wireless network technology has been developed to sustain the massive number of users
Telecommunication Union (ITU), 5G wireless systems are classified to support three generic services as enhanced Mobile Broadband, massive Machine-Type Communications, and Ultra-Reliable and Low-Latency Communications (URLLC) [1,2]. These use cases empower various services provided by the 5G network: (a) the eMBB provides a stable connections service of mobile broadband with significantly high peak data rates that assist in providing consistent user experience; (b) the mMTC furnishes a massive number of Internet of Things (IoT) devices, which are transmitting small data payloads periodically; (c) the URLLC services will open up additional diverse capabilities of the network by expanding its limits for high reliability and low-latency from a restricted set of terminals
The simulation were performed in MATLAB, and the results showed that non-orthogonal multiple access (NOMA) achieves a better performance than orthogonal frequency-division multiple access (OFDMA) in the categories compared
Summary
A rising consensus in the fifth generation (5G) of wireless network technology has been developed to sustain the massive number of users. It will support a broad range of vertical industries demands by linking everyone and everything, smart devices, machines, and sensors. Telecommunication Union (ITU), 5G wireless systems are classified to support three generic services as enhanced Mobile Broadband (eMBB), massive Machine-Type Communications (mMTC), and Ultra-Reliable and Low-Latency Communications (URLLC) [1,2] These use cases empower various services provided by the 5G network: (a) the eMBB provides a stable connections service of mobile broadband with significantly high peak data rates that assist in providing consistent user experience; (b) the mMTC furnishes a massive number of Internet of Things (IoT) devices, which are transmitting small data payloads periodically; (c) the URLLC services will open up additional diverse capabilities of the network by expanding its limits for high reliability and low-latency from a restricted set of terminals. Reusing similar resources enables improvement in spectral efficiency regardless of possible interference between these services [4,5]
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