Table 3 Performance comparison between Algorithm in5 and RIS-enhanced (at 100 IoT devices).

From: Phase shift optimization in reconfigurable intelligent surface-assisted UAV in hierarchical aerial computing networks

Performance measure

Algorithm in5

RIS-enhanced

Total computed data

 4.8 GB

 5.8 GB

Number of served IoT devices

 82

 98

Task completion rate

79%

95%

Average processing delay

 3.6 s

 2.5 s

Total energy consumption

 0.9 kJ

 1.7 kJ

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