Downlink Resource Sharing and Multi-tier Caching Selection Maximized Multicast Video Delivery Capacity in 5G Ultra-Dense Networks

Phan, Thanh-Minh; Vo, Nguyen-Son; Bui, Minh-Phung; Tran, Quang-Nhat; Nguyen, Hien M.; Masaracchia, Antonino

doi:10.1007/978-3-030-63083-6_2

Cited by 2 publications

(2 citation statements)

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“…In [29]- [31], multicast techniques can be applied to the MBSs and/or FBSs besides D2D communications to propose flexible VASs in B5G/6G networks. After clustering, the social relationship between the CHs and the other RUs in each cluster is defined to improve the QoS.…”

Section: B Multicast D2d Communicationsmentioning

confidence: 99%

“…After clustering, the social relationship between the CHs and the other RUs in each cluster is defined to improve the QoS. It is crucial that the works [29]- [31] have addressed the problem of unfair QoS among the RUs in different clusters caused by multicast transmissions over diverse characteristics of wireless channels from the CHs to the RUs. In [32], the RUs can also access the contents flexibly from the MBS, SBSs, and CHs with high capacity and low delay, but multicast technique is only applied to D2D communications.…”

Section: B Multicast D2d Communicationsmentioning

confidence: 99%

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

Tran

Bui

et al. 2022

IEEE Trans. Cogn. Commun. Netw.

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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.

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Section: B Multicast D2d Communicationsmentioning

confidence: 99%