Improper configuration of the Frequency attribute of a pathloss model in LTE carrier aggregation
This issue is related to improper configuration of the Frequency attribute of a pathloss model when LTE carrier aggregation is used. In LteHelper (https://gitlab.com/nsnam/ns-3-dev/-/blob/master/src/lte/helper/lte-helper.cc#L224), we create a single channel object for multiple component carriers. Since there is a unique pathloss model associated with a single channel object, we can not configure the frequency attribute of a pathloss model for each component carrier differently.
The impact of this bug is that the frequency attribute of a pathloss model is set to the frequency of the last component carrier https://gitlab.com/nsnam/ns-3-dev/-/blob/master/src/lte/helper/lte-helper.cc#L704.
Thanks @natale-p for reporting it.