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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