Research Article

Dependent Task-Offloading Strategy Based on Deep Reinforcement Learning in Mobile Edge Computing

Table 1

Experimental parameters.

ParameterValue

Computing resources of the device [0.1, 0.5] G cycles/s
Total edge server computing resources{18, 15, and 12} G cycles/s
Power at the device idle [0.004, 0.04] W
The data size of the task i[30, 50] MB
The computational complexity of tasks 600cycles/Kb
The device wireless data transmission rate [0.1, 10] MB/s
Data sending power of the device 0.1 W
The local calculated power of the device 10 W
Delay threshold 200
Energy consumption threshold 200
Weighting factor 0.5
Number of DNNs 3
The memory size of experience replay1024
Batch training size 128
Learning rate 0.01
Number of training rounds 4000
Threshold value 512
Number of IoT devices 10
Number of neurons in the first hidden layer 120
Number of neurons in the second hidden layer 80