Call Drop Rate=LE-RAB AbnormRel/(LE-RAB AbnormRel+LE-RAB normRel)*100%
Call Drop Rate=LE-RAB AbnormRel/RRC ConnectionSetup Success*100%
Call Drop Rate=LE-RAB AbnormRel/LE-RAB Success*100%
Call Drop Rate=LE-RAB AbnormRel/LE-RAB normRel*100%