Symbol

Definition

Value

k

Number of subtasks

100 - 700

$f_l$

local computing power

2.5 GHz

$p_l$

local execution power

5.5 W

$p_{up}$

Upload power

3 W

$p_{down}$

Download power

2 W

$p_{idle}$

Local standby power

0.3 W

$D_i^{in}$

The amount of input data for the i-th task

100 - 350 Mb

$Z_i$

The number of resources required to process the i-th task

1 - 30 GHz

$D_i^{out}$

The amount of data after the i-th task calculation is completed

100 - 350 Mb

$f_j^{mec}$

The computing power of the jth edge cloud server

3.5 - 7.5 GHz

$r_j^{upmec}$

The jth edge cloud server upload bandwidth

35 - 39 Mbps

$r_j^{downmec}$

The download bandwidth of the jth edge cloud server

40 - 44 Mbps

$f_{cloud}$

Central cloud server computing power

15 GHz

$r_{upcloud}$

Central cloud server upload bandwidth

30 Mbps

$r_{downcloud}$

Central cloud server download bandwidth

35 Mbps

$N$

population size

30

$maxite$

The maximum number of iterations

100