Table 1 Frequently used notations
From: Reliable low-energy group formation for infrastructure-less public safety networks
| Notation | Definition |
|---|---|
| N | Number of UEs |
| \({\mathcal {V}}\) | Set of GOs |
| \({\mathcal {N}}_{j}\) | Set of GMs associated with GO j |
| d ij | Distance between UE i and UE j |
| r 1 | Maximum range for reliable intra-group link |
| r 2 | Maximum range for reliable inter-group link |
| w(d ij ) | Power consumption for the transmission between GO j and UE i |
| \(\bar {w}\) | Power consumption for the management of each group |
| s(i,j) | Similarity of UE i to UE j |