Table 1 Samples space for channel states
From: ILFCS: an intelligent learning fuzzy-based channel selection framework for cognitive radio networks
Sample rule | Current sensing | Interference with internal PU | Interference with external PU | Generated sample | Channel state description |
|---|---|---|---|---|---|
Either CR user or one CR neighbor discovers the channel OFF at time (t) and completed a transmission on channel during [ t−Δt,t]). | 0 | 0 | 0 | [ 0 0 0 ] | OFF |
CR user discovers the channel OFF at time (t), but failed to transmit on channel during (t−Δt,t) or most CR neighbors discovers the channel ON at time (t−Δt) and t. | 1 | 1 | 0 | [ 0 1 0 ] | MD |
CR user discovers the channel ON at time (t), and most CR neighbors discovers the channel ON at time (t−Δt) and t. | 1 | 1 | 0 | [ 1 1 0 ] | ON |
CR user discovers the channel ON at time (t), but one CR neighbor discovers the channel OFF at time (t) and completed a transmission on channel during (t−Δt,t). | 1 | 0 | 1 | [ 1 0 0 ] | FA |