A receiver for processing broadcasting data, the receiver comprising: a tuner for receiving a signal frame including Layer 1 signaling data; a demodulator configured to demodulate the signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) method; a time-deinterleaver (r1010-L1) configured to time-deinterleave Layer 1 signaling data with a time interleaving depth; a QAM demapper configured to demap constellation values corresponding to the time-deinterleaved Layer 1 signaling data into cell words and to multiplex the demapped cell words into Layer 1 signaling data; a bit deinterleaver configured to bit-deinterleave the multiplexed Layer 1 signaling data and at least one LDPC parity bit; a de-puncturing means configured to perform de-puncturing on the LDPC parity bit; an LDPC decoder (r715-c) configured to LDPC-decode the Layer 1 signaling data and the de-punctured LDPC parity bit; and a BCH decoder (r715-c) configured to BCH-decode the LDPC-decoded Layer 1 signaling data and the de-punctured LDPC parity bit, a decoder configured to decode a network information table carried by the signal frame, wherein the receiver is configured to send the L1 signalling data and the network information table to a system controller for restoring PLP data that are transmitted in the data slices process, characterized in that the Layer 1 signaling data include Data_Slice_num_PLP information indicating a number of PLPs carried within an associated data slice, the data slice being a group of OFDM cells carrying at least one PLP in a certain frequency sub-band, and wherein the Layer 1 signaling data include a notch start information field indicating a start position of an associated notch band and a notch width information field indicating a width of the associated notch band, wherein the network information table includes a descriptor which is used to map transport streams to a PLP in the associated data slice, and wherein the descriptor indicates a frequency value which the receiver tunes to. a tuner for receiving a signal frame including Layer 1 signaling data; a demodulator configured to demodulate the signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) method; a time-deinterleaver (r1010-L1) configured to time-deinterleave Layer 1 signaling data with a time interleaving depth; a QAM demapper configured to demap constellation values corresponding to the time-deinterleaved Layer 1 signaling data into cell words and to multiplex the demapped cell words into Layer 1 signaling data; a bit deinterleaver configured to bit-deinterleave the multiplexed Layer 1 signaling data and at least one LDPC parity bit; a de-puncturing means configured to perform de-puncturing on the LDPC parity bit; an LDPC decoder (r715-c) configured to LDPC-decode the Layer 1 signaling data and the de-punctured LDPC parity bit; and a BCH decoder (r715-c) configured to BCH-decode the LDPC-decoded Layer 1 signaling data and the de-punctured LDPC parity bit, a decoder configured to decode a network information table carried by the signal frame, wherein the receiver is configured to send the L1 signalling data and the network information table to a system controller for restoring PLP data that are transmitted in the data slices process, characterized in that the Layer 1 signaling data include Data_Slice_num_PLP information indicating a number of PLPs carried within an associated data slice, the data slice being a group of OFDM cells carrying at least one PLP in a certain frequency sub-band, and wherein the Layer 1 signaling data include a notch start information field indicating a start position of an associated notch band and a notch width information field indicating a width of the associated notch band, wherein the network information table includes a descriptor which is used to map transport streams to a PLP in the associated data slice, and wherein the descriptor indicates a frequency value which the receiver tunes to.