Abstract:
This work proposes a spectrum selection scheme and a transmit power minimization scheme
for a device-to-device (D2D) network cross-laid with a cloud radio access network (CRAN).
The D2D communications are allowed as an overlay to the CRAN as well as in the unlicensed
industrial, scienti c and medical radio (ISM) band. A link distance based spectrum selection
scheme is proposed and closed-form approximations are derived for the link distance thresh-
olds to select the operating band of the D2D users. Furthermore, analytical expressions are
derived to calculate the minimum required transmit power to achieve a guaranteed level of
quality of service in each operating band. The results demonstrate that the proposed scheme
achieves nearly 50% power saving compared to a monolithic (purely overlay or purely ISM
band) D2D network. Moreover, this work creates an immense space for communication tech-
nologies to be wisely managed and utilized by application layer requirements through CRAN
architecture. Caching strategies for content replication across end user devices and e ective
content delivery strategies can be implemented for forthcoming video streaming applications.
Citation:
Ranawaka, I.J. (2020). An Energy efficient D2D communication model with guaranteed QoS for cloud radio access networks [Master's theses, University of Moratuwa]. Institutional Repository University of Moratuwa. hthttp://dl.lib.uom.lk/handle/123/18793