Abstract
With the rapid increase of smart mobile devices and the improvement of people's demand for wireless communication, the insufficient system capacity and shortage of spectrum resources is gradually emerging. The current wireless communication technology is facing enormous challenges. Device-to-Device (D2D) technology has become a key technology in the future 5G network, with its flexible working mode, low energy consumption, low latency and high capacity, etc. At the same time, D2D communication devices are usually powered by batteries and have a limited lifetime. The lack of spectrum resources and the single power supply for D2D User Equipment (DUE) have become an important issue for mobile communication. Energy harvesting (EH) can provide the power supply. The joint problem of mode selection and resource allocation is challenging issues in energy harvesting D2D heterogeneous networks (EH-DHNs). In this paper, mode selection and resource allocation problem with DUEs multiplexing cellular user equipments (CUEs) uplink spectrum resources for EH-DHNs is investigated. Our object is to maximize the system throughput, and the energy harvesting constraint and the quality of service of CUEs are considered. In order to tackle these issues. The mode selection and resource allocation system throughput maximization problem in EH-DHN is formulated. The formulated problem is solved by the convex optimization theory and greedy strategy. We proposed a Mode Selection and Resource Allocation algorithm (MSRA). In order to illustrate the advantage of the MSRA algorithm, we compared it with other algorithms. We also analyzed the convergence of the MSRA and the performance with different system configurations on system throughput. Comparison shows that the MSRA algorithm can improve system throughput effectively.
Highlights
With the increasing of mobile devices and mobile data traffic, cellular networks are facing challenging issues for high data rate
3) We proposed a Mode Selection and Resource Allocation algorithm (MSRA) based on convex optimization theory and greedy strategy to solve the formulated problem
In this paper, we investigated the joint problem of mode selection and resource allocation in Energy Harvesting (EH)-DHN
Summary
With the increasing of mobile devices and mobile data traffic, cellular networks are facing challenging issues for high data rate. The joint problem of mode selection and resource allocation with the goal of maximizing spectrum efficiency in EH-DHNs is investigated in this paper. In [15], the joint problem of the EH time allocation, spectrum resource allocation and transmission power allocation is investigated with the aim of maximizing the energy efficiency in EH-DHNs. An iterative algorithm based on Lagrangian multiplier is proposed to solve the formulated mixed-integer nonlinear constraints optimization problem. 1) We considered the spectrum efficiency mode selection and resource allocation problem in the uplink EH-DHNs. 2) We formulated the joint problem of mode selection, EH time duration allocation of DUEs, transmission power allocation and spectrum resource allocation with the objective of maximizing the system throughput.
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