A Heuristic Task Scheduling Strategy for Intelligent Manufacturing in the Big Data-Driven Fog Computing Environment

Table 1

Simulation experiment parameters.

Parameter	Value
Number of intelligent terminal devices	200
Number of fog nodes	15
The size of task data (Mb)	1–10
Maximum tolerance time for task	1–3 s
Computing capacity of cloud server (Gcycles/s)	10
Computing capacity of cloud server (W)	50
Computing capacity of fog nodes (Mcycles/s)	300–500
Computational density of tasks (cycles/bit)	300
Transmission power of smart device (M)	3–6
Computational power of smart device (M)	3–6
Network bandwidth of smart device (M)	150
Fog node network bandwidth (M)	120
Cloud server network bandwidth (M)	5
Real-time intensity weight for tasks	0.8
Complex intensity weight for tasks	0.3
Crossover rate	0.8
Mutation rate	0.1
The maximum number of iterations	150
Number of species	100