Table 1 Summary of symbols and notations
From: Actor-critic learning-based energy optimization for UAV access and backhaul networks
Notation | Description |
|---|---|
\(L_t, L_r\) | Number of transmitting, receiving antennas in UAV |
\(K_n, {{\mathcal {K}}}_n\) | Number and set of users in cluster n |
\(G_n, {{\mathcal {G}}}_n\) | Number and set of groups in cluster n |
\(K_{g,n}, {{\mathcal {K}}}_{g,n}\) | Number and set of users in group g of cluster n |
\(q_{k}, D\) | Demands of user k and total demands |
\(T_{max}\) | Time limitation for each task (in seconds) |
\(I, {{\mathcal {I}}}\) | Number and set of timeslots in each frame |
\(\Phi\) | Duration of each timeslot (in seconds) |
\(\mu\) | Water-filling level |
\(e^{bh}(\mu )\) | Backhaul energy |
\(d^{bh}(\mu )\) | Transmitted data in backhaul link |
\(e^{hov}\) | Hovering energy at each timeslot |
\(e_g\) | Communication energy for group g at each timeslot |
\(d_{k,g}\) | Transmitted data for user k in group g at each timeslot |