Algorithm 2: Pseudo Code for the Auction Algorithm.

Q = the set of all requests from multicast D2D groups to reuse cellular resources Set $P_t^c=P_{t_{max}}^c$ and $P_{t_{min}}^m \le P_t^m\le P_{t_{max}}^m$ All cellular users broadcast a set of prices for all $cϵ\mathcal{C}$, $mϵℳ$ do Multicast D2D transmitters start auction algorithm simultaneously if$S_{eNB}$$\ge$$s_m$, then Allocates the resources to the multicast groups Calculate ${\gamma }_c$, ${\gamma }_m$, $R_c$, and $R_m$ Calculate $G_{sum}$ and G Formulate the performance gain optimization problem as S2. $\max \sum _{i=1}^I\sum _{c=1}^C\sum _{m=1}^{M}G$ else $S_{eNB}$$<$$s_m$ end if end for