Abstract
In order to solve the problem of interference and spectrum optimization caused by D2D (device-to-device) communication multiplexing uplink channel of heterogeneous cellular networks, the allocation algorithm based on the many-to-one Gale-Shapley (M21GS) algorithm proposed in this paper can effectively solve the resource allocation problem of D2D users multiplexed cellular user channels in heterogeneous cellular network environments. In order to improve the utilization of the wireless spectrum, the algorithm allows multiple D2D users to share the channel resources of one cellular user and maintains the communication service quality of the cellular users and D2D users by setting the signal to interference and noise ratio (SINR) threshold. A D2D user and channel preference list are established based on the implemented system’s capacity to maximize the system total capacity objective function. Finally, we use the Kuhn–Munkres (KM) algorithm to achieve the optimal matching between D2D clusters and cellular channel to maximize the total capacity of D2D users. The MATLAB simulation is used to compare and analyze the total system capacity of the proposed algorithm, the resource allocation algorithm based on the delay acceptance algorithm, the random resource allocation algorithm and the optimal exhaustive search algorithm, and the maximum allowable access for D2D users. The simulation results show that the proposed algorithm has fast convergence and low complexity, and the total capacity is close to the optimal algorithm.
Highlights
Mobile communication networks are moving toward lower energy consumption, greater resource utilization, and higher network capacity
A D2D user and channel preference list are established based on the implemented system capacity to maximize the system total capacity objective function
The macro cell radius is set to 1000 m, and the cellular users and D2D users are distributed in the cell as independent Poisson point processes
Summary
Mobile communication networks are moving toward lower energy consumption, greater resource utilization, and higher network capacity. In order to meet the above requirements, device-to-device (D2D) communication technology has emerged [1,2,3,4,5]. Traditional cellular network users need to forward data through the base station to communicate, and D2D users can perform direct communication at close range. Compared with cellular communication, D2D communication has a smaller communication delay, which can improve the spectrum efficiency and achieve higher throughput and energy efficiency by multiplexing the spectrum resources of cellular users [6,7,8,9]. Since multiplexing cellular spectrum resources can cause serious interference between cellular communication and.
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