What is the difference between SpectrumWifiPhyHelper and YansWifiPhyHelper?

[Shey Janota]

Hello everyone,

If I have 4  Wi-Fi (WIFI_STANDARD_80211a) nodes in ad-hoc mode: wifiMac.SetType ("ns3::AdhocWifiMac");

Which type of WifiPhyHelper should I use? considering that there is any coexistence of other network technologies.

I have read about 

SpectrumWifiPhy: https://www.nsnam.org/docs/models/html/wifi-design.html#spectrumwifiphy

and 

YansWifiPhy: https://www.nsnam.org/docs/models/html/wifi-user.html#spectrumwifiphyhelper

I know that they are frameworks that help to define Phy layer and the channel that will be used. But I couldn't understand very much the difference between them and when to use one or another.

Regards.

Sheila Janota

[Shilpi Mittal]

Hi

YanswifiPhyHelper is specified for IEEE802.11P(DSRC) STANDARD. It is used for WAVE communication whereas other is to provide wireless access for WiFi networks.

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[Tom Henderson]

Yans can be used if there are no coexistence aspects to the simulation
(i.e., if you are not trying to do LTE-LAA or NR-U simulations or
anything else involving non-Wi-Fi signals on the channel). Yans should
be faster to execute because it doesn't have to split the signal into
multiple sub-bands.

- Tom

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