Spectrum Sharing and Power Allocation Optimised Multihop Multipath D2D Video Delivery in Beyond 5G Networks

Abstract

In this paper, we propose a joint spectrum and power optimisation (SPO) for multi-hop multi-path (MHMP) device-to-device (D2D) video delivery in beyond 5G (B5G/6G) networks, where the system resources such as spectrum, energy, storage, and content of mobile users (MUs), are taken into account. Particularly, the downlink spectrum resources of the sharing users (SUs) are reused by the transmitters (TXs) of D2D hops and the energy resources of the TXs are utilised for D2D communications. We further exploit the videos stored in the caching users (CUs) located more than one D2D hop far away from the requesting users (RUs) to establish MHMP D2D video delivery sessions from the CUs to the RUs. Then, the SPO problem is formulated for the optimal spectrum sharing pairs of SUs and TXs and the optimal transmission powers allocated to the TXs. Genetic algorithms (GAs) are developed to solve the SPO problem with respect to both binary variable (spectrum sharing) and real variable (power allocation). The SPO solution allows the RUs to alternately request the videos not only from the macro base station over conventional cellular networks but also from the CUs over MHMP D2D communications at the highest quality of service, i.e., maximum video delivery capacity and low power consumption. Simulation results are analysed to demonstrate the feasibility of GAs and the benefits of the proposed SPO solution in comparison with other conventional schemes.

On the Performance of the Relay Selection in Multi-hop Cluster-based Wireless Networks with Multiple Eavesdroppers Under Equally Correlated Rayleigh Fading

“…This section presents computer-based simulation results obtained through Monte-Carlo simulations to validate the accuracy of the derived mathematical Figure 2 examines the accuracy and convergence of the infinite series in (9). The plot demonstrates that the infinite series in ( 9) converges rapidly to the numerical computations.…”

“…The relationship between reliability and security through OP and IP was revisited in [8]. Spectrum sharing and power allocation optimization were addressed in [9], but correlated fading was not considered. The performance of correlated fading in MIMO systems was explored in [11], with a focus on ergodic capacity, while the present work concentrates on OP.…”

Optimization Algorithm for Multipath Transmission of Distance Education Resources Using Reinforcement Learning

“…It has the potential to significantly increase the efficiency with which instructional data is transmitted. Network-based educational resources have improved in terms of quality, but there are still some issues such as educational data corruption that need to be addressed [26][27][28][29]. In addition, researchers have presented a method for evaluating the effectiveness of network resource distribution that is based on quantitative recursive scheduling.…”