Open AccessGraph colour‐based resource allocation for relay‐assisted D2D underlay communications
Author(s) -
Liu Miaomiao,
Zhang Li
Publication year - 2020
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2019.1281
Subject(s) - relay , computer science , resource allocation , underlay , throughput , computer network , selection (genetic algorithm) , interference (communication) , cellular communication , signal to noise ratio (imaging) , power (physics) , wireless , telecommunications , base station , artificial intelligence , physics , quantum mechanics , channel (broadcasting)
Relay‐assisted device‐to‐device (D2D) communications have been proposed as a supplement for direct D2D communications to enhance traffic offloading capacity. In this study, the authors propose a joint mode selection, relay selection and resource allocation for relay‐assisted D2D communications. They aim at maximising the overall system throughput while guaranteeing the power limitation and signal‐to‐noise‐and‐interference ratios of all cellular and active D2D links. Since this optimisation is NP‐hard, they then propose a graph colour‐based resource allocation algorithm to effectively solve it. Simulation results show that the proposed algorithm can produce close‐to‐optimal performance with acceptable computational complexity.