Methods are provided for supporting mobility of a UE in a system without an HeNB GW. An S1 setup request message is sent to an MME by an HeNB. The S1 setup request message includes version information of the HeNB. An RRC connection is established between the UE and the HeNB. An initial UE message is sent from the HeNB to the MME. An NAS message is sent from the UE to the MME. An establish bearer request message is sent from the MME to a corresponding SGW based on an IP address of an LGW. The IP address of the LGW is obtained by the MME through the S1 setup request message. An establish bearer response message is sent from the LGW to the SGW in response to the establish bearer request message. The establish bearer response message is sent from the SGW to the MME.