Table 1 Description of characters.
Character | Description |
|---|---|
IWSNs | Industrial wireless sensor networks |
BS | Base station |
CH , CM | Cluster head and cluster member |
GAAFSA | Gaussian mutated adaptive artificial fish swarm algorithm |
\({\mu _{fs}}\),\({\mu _{amp}}\) | Power amplification parameter for free space transmission and for multi-path attenuation transmission |
\({E_{elec}}\) | Energy needed for transmitting circuit and receiver circuit |
d | Communication distance |
p | Sent data packets size |
Etx(p, d) | Energy consumption of a node when transmitting p bits of data to a node at a distance of d |
Erx(d) | Energy required for a node to receive p bits of data |
cls | Number of CH nodes in the current cluster |
\(Del_{tran}\),\(Del_{prop}\),\(Del_{proc}\),\(Del_{que}\) | Transmission delay, propagation delay, processing delay and queuing delay |
Del,Loss | Delay and packet loss rate in communication process |
\(\sigma\) | QoS control factor |
\(Fit_{ener}\),\(Fit_{QoS}\),\(Fit_{dis}\) | Enegry fitness, QoS fitness and distance fitness before being normalized |
\(Fit_{max}^{ener}\),\(Fit_{max}^{QoS}\),\(Fit_{max}^{dis}\) | Maximum enegry fitness, QoS fitness and distance fitness |
\(Fit_{min}^{ener}\),\(Fit_{min}^{QoS}\),\(Fit_{min}^{dis}\) | Minimum enegry fitness, QoS fitness and distance fitness |
\(Fit_{norm}^{ener}\),\(Fit_{norm}^{QoS}\),\(Fit_{norm}^{dis}\) | Normalized enegry fitness, QoS fitness and distance fitness |
\(\tau\),\(\phi\),\(\psi\) | The weights of enegry fitness, QoS fitness and distance fitness |
Final | Final Fitness of the proposed GAAFSA |
