6. A Base Station (BS) for transmitting a Positioning Reference Signal (PRS) for estimating a location of a Machine Type Communication (MTC) User Equipment (UE) in a wireless access system supporting MTC, the BS comprising:a transmitter; and
a processor configured to support PRS transmission by controlling the transmitter,
wherein the processor is configured to transmit PRS Subframe (SF) information, repeatedly transmit a Physical Downlink Shared Channel (PDSCH) including a same downlink data, N times, and transmit the PRS in PRS SFs,
wherein a normal Cyclic Prefix (CP) is applied to the PRS when the PRS SFs are configured with a normal SF and a Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN) SF,
wherein an extended CP is applied to the PRS when the PRS SFs include only MBSFN SFs, and
wherein the PRS SF information indicates SFs configured as the PRS SFs.