Can Full Duplex reduce the discovery time in D2D Communication?

Device-to-device (D2D) communication is considered
as one of the key technologies to support new types of
services, such as public safety and proximity-based applications.
D2D communication requires a discovery phase, i.e., the
node awareness procedure prior to the communication phase.
Conventional half duplex transmission may not be sufficient to
provide fast discovery and cope with the strict latency targets of
future 5G services. On the other hand, in-band full duplex, by
allowing simultaneous transmission and reception, may complete
the discovery phase faster. In this paper, the potential of full
duplex in providing fast discovery for the next 5th generation
(5G) system supporting D2D communication is investigated. A
design for such system is presented and evaluated via simulations,
showing that full duplex can accelerate the discovery phase by
supporting a higher transmission probability compared to half
duplex. Simulation results show that, in order to meet the strict
5G control plane latency target, advanced receivers are required.
In that case, full duplex can reduce the latency up to 80%.