Table 1 List of parameters
From: Security management based on trust determination in cognitive radio networks
Symbol | Description |
|---|---|
C i | Cluster indicia |
S | The cluster set |
V i j | Trust value |
R i | Resource |
λ i | Resource allocation threshold |
V | The matrix of trust value |
a,b,c,d | The weight coefficient of attribute |
s | The rate of decay |
α,β,γ | The weight coefficient of trust value |
R f | Covering radius of FC |
ρ r | The threshold of cluster head |
L | The maximum number of cluster heads |
K | Maximum number of cognitive users |
per cluster sub-network | |
N | The number of cognitive users |
σ | The attenuation factor |
ε | The reward factor |
σ | The penalty factor |
ξ | The recovery factor |
ζ | The regulate factors |
η | Penalty accumulation factor |