Table 1 Summary of notations
Notation | Definition |
|---|---|
M | Number of RUs |
N | Number of BSs |
J | Number of PUs |
T\(_m\) | The task of RU\(_m\) |
\(\xi _m\) | Data size of T\(_m\) |
\(\eta _m\) | CPU cycles required to process T\(_m\) |
\(D^{\max }_m\) | Maximum tolerable latency to execute T\(_m\) |
K | Total number of sub-channels |
\(W_0\) | Bandwidth of each sub-channel |
\(W_n^{\mathrm{max}}\) | Number of RUs accessing the BS\(_n\) |
\({R_{m,j}^{\mathrm{d}}}\) | The achievable data rate of the link between the RU\(_m\) and the PU\(_j\) |
\(h_{m,j,k}^{\mathrm{d}}\) | The channel gain of the link between the RU\(_m\) and the PU\(_j\) at the k-th sub-channel |
\(\mathrm{Dist}\) | Distance of D2D transmission |
\(P_{m}\) | Transmission power of RU\(_m\) |
\(\tau _{m}\) | Maximum tolerable delay |
\(\sigma ^{2}\) | Noise power |
\({f_m^{\mathrm{0}}}\) | Computational capability of RU\(_m\) |
\({f_n^{\mathrm{m}}}\) | MEC server computational capability |
\({f_j^{\mathrm{d}}}\) | Computational capability of PU\(_j\) |