Advances, Systems and Applications
Table 5 Basic simulation parameters
From: SRA-E-ABCO: terminal task offloading for cloud-edge-end environments
| Â | Parameter | Value |
|---|---|---|
\(m\) | Number of terminal devices | \(\left[40,120\right]\) |
\(n\) | Number of edge nodes | \(\left[10,30\right]\) |
\({g}_{i}^{j}\) | Channel gain | \(127+logd\) |
\(C\) | The number of CPU cycles requested by the service | \(\left[0,1\right]\) |
\({N}_{0}\) | Noise power in uplink bandwidth | \(2\times {10}^{-13}\) |
\(W\) | System bandwidth | 15Â MHz |
\({P}_{i}\) | Terminal transmission power | 1w |
\({T}_{i}^{max}\) | Maximum time delay | 1–3 s |
\({f}^{ser}\) | Terminal equipment processing capability | 4–8 GHz |
\({f}_{edge}\) | Processing power of the edge server | 16–24 GHz |
\({f}_{cloud}\) | Processing power of the cloud center | 30Â GHz |
\({c}_{i}\) | Terminal device CPU energy coefficient | \({10}^{-25}\) |
\({k}_{i}\) | Edge server CPU energy coefficient | \({10}^{-26}\) |
α | Learning rate | 0.0001 |