Table 1 List of notation
From: A controller deployment scheme in 5G-IoT network based on SDN
Parameters | Meaning |
|---|---|
\({\rho }_{i}\) | Local density |
\({\delta }_{i}\) | relative distance |
\({d}_{ij}\) | Euclidean distance between switch node \({s}_{i}\) and switch node \({s}_{j}\) |
\({d}_{c}\) | Truncation distance |
hpi | Relatively high density point |
\({c}_{j}\) | Ith subnet area |
Sep | Sub-network regional separation |
Comp | Degree of aggregation within the sub-network area |
\({v}_{i}\) | Controller nodes |
\(c\) or k | The number of controllers |
\({u}_{ij}\) | The degree to which the switch \({s}_{j}\) belongs to the controller node \({v}_{i}\) |
\({s}_{i}\) | Switch nodes |
\(m\) | Weight index |