… D2D communications. We show that compared with the no-relay scheme, the NNC, HNC, and
PNC opportunistic relay … the PNC opportunistic relay scheme versus the no-relay scheme, …

… the spectrum efficiency and communication robustness, we … -Device (D2D) communication
and opportunistic relaying. The … D2D transmitters (DTs) uniformly distributed and intending to …

… set of D2D relays. As the candidate UE relays work in duty cycle to save energy, we derive
a model to select a set of UE relays and perform opportunistic D2D communication according …

… For example, in the most recent relevant literatures, the authors in [9-10] design a delay-aware
D2D opportunistic relay enforcement framework (for short, DORE), which aims at …

… analysis of outband D2D relay schemes. Moreover, we design D2D opportunistic relay with
QoS … Our experiments reveal that outband D2D communications are suitable for relaying in a …

… communication and out-of-band cooperation, where users perform relaying for each other’s
downlink traffic by opportunistically … of opportunistic scheduling and D2D communications in …

… (D2D) relaying UEs by allowing some UEs to relay other UEs’ data through D2D communication,
we … systems with RSs and D2D communication can be further improved with adopting …

… For the D2D communication links, we can take advantage of Scenario A1 belonging to …
encountered by D2D communications. The applicable frequency range is also from 2 to 6GHz. …

… assume that the relay is trusted. In fact, the relay belonging to D2D communications in a …
have lower security than the sources, that is, the relay is in effect also an eavesdropper [14]–…

… relay selection scheme for D2D communication in LTE-A is developed in [15]. Outage
probability analysis of full duplex relay assisted D2D … the relay selection for all four types of D2D …