Table 1 Simulation parameters setting
From: Distributed energy-efficient and secure offloading in air-to-ground MEC networks
Parameters | Value |
|---|---|
Transmission power \({{p}_{k}}\) | \(400\,\text {mW}\) |
Background noise \({{N}_{0}}\) | \(-\,100\,{\text {dBm}}\;\) |
Computing capacity of UDs (GHz) | \(\mathcal {U}\left[ 1.5,2 \right]\) |
Computing capacity of HDs (GHz) | \(\mathcal {U}\left[ 4,4.5 \right]\) |
Capacitance coefficients \({{\kappa }_{k}},{{\kappa }_{w}}\) | \(1\times {{10}^{\text {-}27}},3\times {{10}^{\text {-}28}}\) |
The amount of UDs K | 5 |
Input data (Mb) | \(\mathcal {U}\left[ 1.4,1.6 \right]\) |
\({{\eta }_{k}}\) | \(\mathcal {U}\left[ 800,1000 \right]\) |
Task processing delay (ms) | \(\mathcal {U}\left[ 500,700 \right]\) |
Channel bandwidth B | \(15\,\text {MHz}\) |
The number of channels M | 3 |
Height of UAVs (m) | 100 |
Weighting factor \({\varepsilon }_{1}\) and \({\varepsilon }_{2}\) | \(1\times {{10}^{\text {-}6}},2\) |
The channel power gain \({{\beta }_{0}}\) (dB) | \(\mathcal {U}\left[ -22,-18 \right]\) |
\({\lambda },{\theta }\) | 0.5, 0.02 |