On the Performance of Device-to-Device Underlay Communication with Simple Power Control

TLDR

The study investigates device‑to‑device communication as a resource‑reuse technique underlaying cellular networks. The authors model the shared channel as an interference channel, derive SINR statistics for all users, and evaluate limited interference coordination by applying a simple power‑control scheme that limits cellular SINR degradation. Results show that D2D users achieve SINR comparable to cellular users across most of the cell and that scheduling gains can be obtained by allocating either downlink or uplink resources to D2D traffic.

Abstract

We address device-to-device (D2D) communication as a potential resource reuse technique underlaying the cellular network. We consider the shared channel of the two systems as an interference channel and formulate the statistics of the signal to interference plus noise ratio (SINR) of all users. The potential performance of D2D communication is evaluated by considering a scenario where only limited interference coordination between the cellular and the D2D communication is possible. We apply a simple power control method to the D2D communication which constrains the SINR degradation of the cellular link to a certain level. Results show that the SINR statistics of the D2D users is comparable to that of the cellular user in most of the cell area. Scheduling gain is possible by properly assigning either of the downlink (DL) or the uplink (UL) resources to the D2D communication.