An apparatus for providing a wireless communication in a portable terminal includes a wireless communication unit and a controller which verifies basic service set identifications (BSSIDs) of access points when roaming between access points is completed, verifies whether an internet protocol (IP) address is assigned based on a wireless communication network list and the verified BSSIDs, and performs a wireless communication by using an IP address which is in use according to a verification result, wherein the wireless communication network list is a list which classifies a plurality of access points according to the same dynamic host configuration protocol (DHCP) by using BSSIDs of the plurality of access points connected to the portable terminal.