Calculate backoff duration for SCH and CCH in veins

[MK756011]

Hello,

Referring to the article "Safety Communication Based Adaptive Multi-channel Assignment for VANETs"  http://link.springer.com/article/10.1007/s11277-015-3158-8.

How to calculate DCCH backoff and DSCH backoff  in veins simulator. And   DCCH busy and DSCH busy ?

DCCH busy and DSCH busy are the estimated channel busy duration of CCH and SCH.

DCCH backoff and DSCH backoff are the estimated backoff duration of CCH and SCH.

DCCH and DSCH are the durations of CCH interval and SCH interval, correspondingly.

Thanks in advance.