Broadcast signal frame generation device and broadcast signal frame generation method, which use enhanced layer physical layer pipe

A method of generating a broadcast signal frame, comprising:

• generating a multiplexed signal by combining a core layer signal and an enhanced layer signal;
• reducing power of the multiplexed signal to a power level corresponding to the core layer signal;
• generating a time-interleaved signal by performing time-interleaving that is applied to both a core layer corresponding to the core layer signal and an enhanced layer corresponding to the enhanced layer signal;
• and
• generating a broadcast signal frame including a preamble for signaling start position information and information for each of Physical Layer Pipes (PLPs),
• wherein the Physical Layer Pipes include at least one core layer physical layer pipe corresponding to the core layer signal and at least one enhanced layer physical layer pipe corresponding to the enhanced layer signal,
• wherein the start position information and the size information for the core layer physical layer pipe are defined within a current subframe,
• wherein the start position information and the size information of the enhanced layer physical layer pipe are defined with respect to before the time-interleaving.