Algorithm 1 Time slot allocation algorithm for user equipment (UE) scheduling.

Input:${\mathbf{h}}_{\mathrm{U}}^{\left[n,t\right]}$, ${\mathbf{h}}_{\mathrm{E}}^{\left[e,t\right]}\forall n,\forall e,\forall t$

Output:${\mathcal{N}}_t\forall t$

for $t=1:T$ do

$\mathcal{N}=\left\{1,2,\cdots ,N\right\},{\mathcal{N}}_t=\varnothing$

for $s=1:S$ do

$n_t^{\left[s\right]}=\underset{n\in \mathcal{N}}{\mathrm{argmax}}\frac{{\left|{\mathbf{h}}_{\mathrm{U}}^{\left[n,t\right]}\right|}^2}{\underset{e}{\max }{\left|{\mathbf{h}}_{\mathrm{E}}^{\left[e,t\right]}\right|}^2}$

${\mathcal{N}}_t={\mathcal{N}}_t\cup n_t^{\left[s\right]},\mathcal{N}=\mathcal{N}\backslash n_t^{\left[s\right]}$

end for

end for