Review of ultra-dense networks integration with device to device (D2D) communication / Muhammad Firdaus Hashim and Nur Idora Abdul Razak

The current network architecture scene can be a
challenge due to the increasing number of user equipment and its
diversity. Furthermore, the demand for greater data rates and
lower latency by the users are increasing. Deployment of the Ultra
Dense Networks (UDN) described is to support future wireless
network and meet user demands in future wireless networks.
Combined with other technologies such as Device to Device (D2D)
communication, it will provide benefit to the wireless
communication. In this paper, challenges in existing research
efforts are analyzed and future avenues for research is presented.
Apart from that, this paper considers the features of the D2D and
UDN to collaborate later. Generally, by deployment of large small
cells, factors such as the traffic offloading, idle mode capability,
power consumption, and energy efficiency should be considered.
Basically, from the potential challenges that have been identified,
it is obvious that the integration between D2D and UDN is a key
enabler for potential solution. Finally, the research gaps for
research between integration of UDN and D2D can be identified
with challenges and open problems that have been presented.