LTE traffic model consists of two parameters BHSA and Traffic Penetration ratio, what is the meaning of these terms

Question

actually I'm confused in the relation between BHSA and Traffic Penetration Ratio in the following equation in the image. I see from some materials that BHSA can be <1 so how BHSA is estimated, and why multiplying it by Traffic penetration rate?
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Comments

better to comment on the answer in place of putting counter query using the editing of the question. The reason would be the person who has answered the problem will not know that you have modified the problem and will not able to respond.

Answer 1

BHSA/BHCA - Busy Hour Session/Call Attempt
Traffic Penetration Ratio - Total Target Reached/Universal Size

Say you measure the weakly active mobile internet user as the person who upload+download 1MB traffic each week. And in a universe of 100 People 20 people have such pattern. Then traffic penetration ratio is 20%, but this is a highly theoretical term and can very with different context.