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Table 1 Parameter table for energy consumption and time model

From: An energy saving based on task migration for mobile edge computing

Variable

Meaning

Unit

w v

Workload of task v

CPU instructions

f l

Calculation rate of mobile terminal

MIPS

f e

Calculation rate of mobile edge server

MIPS

p l

Power of the mobile terminal when

performing tasks

W

p i

Power of the mobile terminal when idle

W

p s

Sending power of the mobile terminal

W

p r

Receiving power of the mobile terminal

W

e uv

Data transfer amount between task u and task v

Bits

B s

Data sending rate

Bits/s

B r

Data receiving rate

Bits/s

\( {T}_v^l \)

Time spent on the mobile terminal of task v

s

\( {T}_v^e \)

Time spent on the mobile edge server of task v

s

T uv

Time spent on transferring data from task u to v

s

\( {E}_v^l \)

Energy consumed on the mobile terminal of task v

J

\( {E}_v^e \)

Energy consumed on the edge server of task v

J

E uv

Energy consumed by transferring data

from task u to v

J