Table 5 PUs’ activity patterns
From: ILFCS: an intelligent learning fuzzy-based channel selection framework for cognitive radio networks
PU activity | ON | OFF | λ x | λ y |
|---|---|---|---|---|
Long-term activity | λx≤1 | λy≤1 | Long ON | Long OFF |
High activity | λx≤1 | λy>1 | Long ON | Short OFF |
Low activity | λx>1 | λy≤1 | Short ON | Long OFF |