In MAC_Scheduler.c of LTE project the value of enbMac->ca_mac[carrier_id].nAllocatedRBG*enbMac->ca_mac[carrier_id].nRBCountInGroup can be logged at the end of resource block allocation. This will give you the number of Resource blocks allocated per frame (or per millisecond). The log can be a text file, a comma(',') separated CSV file, etc as per your convenience.
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