Handbook on Mobile and Ubiquitous Computing

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Handbook on Mobile and Ubiquitous Computing: Status and Perspective

1. Task width: We set N

MAX

= 8andW

MIN

= 1, meaning that the task width w

i

∈[1, 2, 4, 8].

2. Executing frequency: We set F

MIN

= 20 and F

MAX

= 50 such that f

MAX

i

∈[20..50] and

f

working

∈[20, 25, 30, 35, 40, 45, 50].

3. Execution time: t

i

∈[500, 5000] ms.

4. Energy consumption: E

i

∈[100, 1200] mJ and is proportional to w

i

.

18.3.5.2 Trade Off between Execution Time and Energ y Consumption

In the simulations, we set β = 2, which means that s

threshold

= 16. Figure 18.10a and c show,

respectively, the total execution time and total energy consumed in executing 1000 randomly

generated tasks. As