A wireless cellular network system comprising MME configured to send a first create session request to SGW-C, the SGW-C configured to select SGW-U and transmit a first resource request to the selected SGW-U, and the SGW-U configured to, upon a receipt of the first resource request, allocate an IP address and TEIDs of the SGW-U, and transmit a resource message including the IP address and the TEIDs of the SGW-U to SGW-C. A method of SGW-C in a wireless communication system, the method comprising receiving, from MME, a first create session request, selecting SGW-U among a plurality of SGW-Us, wherein the selection is based on a location of a terminal, transmitting a first resource request to the selected SGW-U, receiving, from the selected SGW-U, a resource message including an IP address and TEID of the SGW-U, the IP address and TEIDs being allocated by the selected SGW-U.