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Midpoint relay selection using social trust and battery level to enhance throughput in cooperative device-to-device communications

journal contribution
posted on 2021-03-12, 07:02 authored by Ushik S Khwakhali, Prapun Suksompong, Steven GordonSteven Gordon
Device-to-device communications in underlay mode has emerged as a promising way to enhance spectrum efficiency in cellular networks. Recently, relay selection in D2D communications underlaying cellular networks is gaining more research interest. In this paper, we propose two relay selection schemes for D2D communications underlaying cellular networks, Midpoint Relay Selection using Social Trust and Battery Level (MRS-ST-BL) and Midpoint Relay Selection using Social Distance and Battery Level (MRS-SD-BL). These proposed schemes utilize battery power level information of devices together with social trust information of users in the network for relay selection. For performance evaluation, initially we show that the throughput of state-of-the-art schemes Hybrid Relay Selection (HRS) and our previously proposed schemes Midpoint Relay Selection using Social Trust (MRS-ST) and Midpoint Relay Selection Using Social Distance (MRS-SD) decrease, when relays have varying battery power. Then, we compare the performance of our proposed schemes against existing schemes including HRS, MRS-ST and MRS-SD. The performance comparison is done at various social trust scenarios and device densities. We show that our proposed schemes can significantly improve the throughput of D2D communications, particularly when relays have different battery power levels in weak social trust scenarios. Finally, we show that the performance of our proposed scheme MRS-ST-BL varies with the change in battery power threshold. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

History

Volume

20

Issue

21

Start Page

1

End Page

32

Number of Pages

32

eISSN

1424-8220

ISSN

1424-8220

Location

Switzerland

Publisher

MDPI

Publisher License

CC BY

Additional Rights

CC BY

Language

eng

Peer Reviewed

  • Yes

Open Access

  • Yes

Acceptance Date

2020-10-14

External Author Affiliations

Thammasat University, Thailand

Era Eligible

  • Yes

Medium

Electronic

Journal

Sensors (Switzerland)

Article Number

6007