A signal load onto a mobility management node MME is reduced by defining a case which does not require "Path Switch" when X2 handover processing is performed for a mobile station UE. A radio base station eNB#1 according to the present invention includes a handover processing unit 14 configured not to perform "Path Switch" when performing X2 handover processing for a mobile station to a radio base station eNB#2 having the same "Virtual eNB ID#1" as the radio base station eNB#1.
