Table 1 The notations of MEEQ

q_k

The actual QoS parameter of service k

B_k

The boundary value of the best area and the sensitive area of service k

(i.e., the best QoS value)

w_k

The boundary value of the sensitive area and the unusable area of

service k (i.e., the worst QoS value)

s_k

The parameter used to determine the area where QoS parameters are

located (i.e., the area determination)

d(q_k,B_k)

The value of difference between the best QoS value and the actual QoS

parameters after adjusted (i.e., the difference)

dir_k

The nature of the QoS parameter, which is used to make the formula constant

for positive values by assigned 1 or (– 1) (i.e., the directional feature value)

v_k

The satisfaction with service k, which is a real number between 0 and

1 (i.e., the user satisfaction)

f_k

The satisfaction with service k when d(q_k,B_k)∈(0,+∞)

\(v_{k}^{i}\)

The user satisfaction for different QoS parameters i of service k

\(a_{k}^{i}\)

The weight for different QoS parameters i of service k

VQoS_k

The final values for evaluating the total user experience of the migrated

service k in their MEC servers