Open Access
Table 3
Computation cost comparison (unit:s)
| Scheme | User | Sensor device/Node | Server/Gateway | Total |
|---|---|---|---|---|
| Wang et al's scheme[15] | 20Th+2Tm≈ 0.136 15 | 10Th+2Tm≈ 0.131 15 | 22Th≈ 0.011 | 0.278 3 |
| Lee et al's scheme[16] | 21Th+2Tb≈ 0.030 5 | 12Th+2Tb+2Tp≈ 0.05 | 28Th≈ 0.014 | 0.094 5 |
|
Gupta |
8Th≈ 0.004 | 5Th≈ 0.002 5 | 12Th≈ 0.006 | 0.012 5 |
|
Wu |
8Th+3Tm+Te≈0.715 225 | 4Th+3Tm+Te≈0.713 225 | 13Th+4Tm+Te≈0.839 3 | 2.267 75 |
| Yu et al's scheme[12] | 15Th≈ 0.007 5 | 14Th≈ 0.007 | 21Th+4Ts≈ 0.045 3 | 0.059 8 |
| The improved scheme | 16Th≈ 0.008 | 14Th≈ 0.007 | 22Th+4Ts≈ 0.045 8 | 0.060 8 |
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