Skip to main content
# Table 1 Summary of key notations

Notations | Definitions |
---|---|

N
| Number of DUs |

K
| Number of initial clusters |

H
| Flying height |

M
| Number of SPs |

\(R_{c}^{\mathrm{max}}\) | Maximum coverage radius of UAV |

\({\mathbf{w}}_{d}[n]\) | Coordinates of the nth DU |

\({\mathbf{w}}_{u}[m]\) | Coordinates of the mth SP |

\({\mathbf{w}}_{u}^{k}[m_{i}]\) | Coordinates of the \(m_{i}\)th SP obtained during the clustering phase |

\({\mathbf{w}}_{u}^{a}[m_{a}]\) | Coordinates of the \(m_{a}\)thSP obtained during the supplementary phase |

\({\mathbf{w}}_{d}^{c}[n_{c}]\) | Coordinates of \(n_{c}\)-th DU that can be covered during the clustering phase |

\({\mathbf{w}}_{d}^{\mathrm{unc}}[n_{\mathrm{unc}}]\) | Coordinates of \(n_{\mathrm{unc}}\)-th DU that cannot be covered during the clustering phase |

\(r_{i}^{k}\) | Sum throughput of covered DU by UAV at \(w_{u}^{k}[i]\) |

\(\rho _{e}\) | Joint evaluation index |

\(L_{\mathrm{sum}}\) | Length of UAV’s trajectory |