Method and apparatus for resource allocation in the wireless communication system

A method for allocating a resource of a base station in a wireless communication system includes the steps of: receiving a handover request message, which is from a first sector to a second sector, in one cell from a terminal; and transmitting a message to allocate mobile allocation index offset (MAIO) which is identical to the MAIO used in the first sector to the terminal. According to the present invention, a voice disconnection of handover latency due to signaling between the base station and the terminal for handover is prevented when the terminal moves between the sectors in a calling operation.