I am using OMNeT++ 5.4.1, Veins 4.7.1, and SUMO 0.30.0. I sould solve congestion. How can I understand capacity of CCH channel is more than 0.65% ? Or how can I understand when I should control congestion? I really appreciate any help.
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In Veins 5.0, the 802.11p MAC layer class (Mac1609_4) emits a signal Mac1609_4::sigChannelBusy (see Mac1609_4.h line 72) whenever it senses that the channel turns from idle to busy or vice versa (appending a bool parameter to the signal to indicate which is which - see Mac1609_4.cc line 880). Your application can rely on this signal to determine when the channel is busy for more than, say, 65% during a given sampling interval.
Similar functionality exists in Veins 4.7.1 (see its Mac1609_4.cc line 952).
Christoph Sommer
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Thanks Mr sommer but when CCH is busy it does not mean it has congestion in veins – sepideh Jan 31 '20 at 07:49