Energy Efcient Downlink Resource Allocation in Cellular IoT Supported H-CRANs
| Autor: | Lilatul Ferdouse, Isaac Woungang, Serhat Erkucuk, Alagan Anpalagan |
|---|---|
| Přispěvatelé: | Erküçük, Serhat |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Computer Networks and Communications
Computer science Energy Efficiency H-CRAN Orthogonal frequency-division multiple access Distributed computing Aerospace Engineering Cloud computing 02 engineering and technology 01 natural sciences 7. Clean energy OFDMA 0203 mechanical engineering Telecommunications link Resource management Electrical and Electronic Engineering Radio access network business.industry Quality of service 010401 analytical chemistry 020302 automobile design & engineering 0104 chemical sciences Cellular IoT Systems Resource Block Allocation Automotive Engineering Resource allocation Power Allocation business Efficient energy use |
| Popis: | The cloud computing supported heterogeneous cloud radio access network (H-CRAN) is one of the promising solutions to support cellular IoT devices with the legacy cellular systems. However, the dense deployment of small cells with fractional frequency reuse in orthogonal frequency division multiple access (OFDMA) based H-CRANs increases intra- and inter-cell interference, turning the resource allocation into a more challenging problem. In general, the macro cell users are considered as the legacy users, whereas the cellular IoT devices and small cell users share the macro cell users’ resource blocks in an underlaid approach. In this paper, we investigate an underlaid approach of resource allocation for small and macro cell users to improve the energy efficiency (EE) in H-CRANs. The solution approaches are derived with the Dinkelbach, Lagrange multiplier and Alternating Direction Method of Multipliers (ADMM) methods by considering the maximum power, resource block allocation, fronthaul capacity and quality of service (QoS) constraints of macro cell users. A two-step energy efficient underlaid cellular IoT (UC-IoT) supported H-CRAN method is proposed and evaluated with the overlaid cellular IoT (OC-IoT) supported H-CRAN and underlaid H-CRAN without cellular IoT devices. The proposed method is evaluated in terms of energy efficiency and the Jain's fairness index, considering the effect of number of cellular IoT density in each small cell of the H-CRAN. The simulation results demonstrate the effectiveness of the proposed approach compared to earlier approaches. |
| Databáze: | OpenAIRE |
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