Broadcasting signal transmitter/receiver and broadcasting signal transmission/reception method
A broadcasting signal reception method according to the present invention comprises the following steps: OFDM-demodulating by receiving a plurality of broadcasting signals, which contain a transmission frame for transmitting a broadcasting service; outputting the transmission frame by decoding a plurality of OFDM-demodulated broadcasting signals with at least one method among MIMO, MISO, and SISO; and selectively decoding a plurality of PLP's, which are included in the transmission frame, using signaling information included in the transmission frame. In particular, PSI/SI such as PAT/PMT can be transmitted through an arbitrary PLP among the plurality of PLP's; and in the transmitter, an arbitrary PLP, which transmits the PAT/PMP, can be decoded first to enable a search of all PLP's that transmit components included in a single broadcasting service, and a plurality of PLP's can be decoded selectively.
1. A method for transmitting broadcast signals, the method comprising:
generating signaling information;
encoding broadcast data, the generated signaling information;
generating a signal frame having a preamble and a plurality of Physical Layer Pipes (PLPs) including the encoded broadcast data, the encoded signaling information,
wherein the preamble includes PLP ID information identifying each PLP and a PLP includes at least one service component;
modulating data in the generated signal frame by an OFDM scheme; and
transmitting the broadcast signals including the modulated data,
wherein service component information include service ID identifying a service and address information for at least one service component belong to the service,
wherein the broadcast signals include a first symbol and a second symbol at a beginning of the modulated data,
wherein the first symbol includes a suffix in a time domain which is obtained from a part of the first symbol based on a frequency shifting method, and
wherein the second symbol includes a prefix in the time domain which is obtained from a part of the second symbol based on a frequency shifting method,
wherein a first PLP among the plurality of PLPs carries service signaling data describing the service and a second PLP among the plurality of PLPs which is different from the first PLP and which carries a mapping table that include a PLP identifier, and
wherein the mapping table carries information for mapping between a PLP corresponding to the PLP identifier and components of the service described in the service signaling data carried in the first PLP.
2. The method of claim 1 , wherein the service component information is transmitted in the broadcast signals or different path from the broadcast signals.
3. The method of claim 1 , wherein the service component information further include information indicating a type of each component.
4. An apparatus for transmitting broadcast signals, the apparatus comprising:
a generator to generate first signaling information;
an encoder to encode broadcast data, the generated signaling information;
a frame builder to generate a signal frame having a preamble and a plurality of Physical Layer Pipes (PLPs) including the encoded broadcast data, the encoded signaling information,
wherein the preamble includes PLP ID information identifying each PLP and a PLP includes at least one service component;
a modulator to modulate data in the generated signal frame by an OFDM scheme; and
a transmitter to transmit the broadcast signals including the generated signal frame, wherein service component information include service ID identifying a service and address information for at least one service component belong to the service,
wherein the broadcast signals include a first symbol and a second symbol at a beginning of the modulated data,
wherein the first symbol includes a suffix in a time domain which is obtained from a part of the first symbol based on a frequency shifting method, and
wherein the second symbol includes a prefix in the time domain which is obtained from a part of the second symbol based on a frequency shifting method, and
wherein a first PLP among the plurality of PLPs carries service signaling data describing the service and a second PLP among the plurality of PLPs which is different from the first PLP and which carries a mapping table that include a PLP identifier, and
wherein the mapping table carries information for mapping between a PLP corresponding to the PLP identifier and components of the service described in the service signaling data carried in the first PLP.
5. The apparatus of claim 4 , wherein the service component information is transmitted in the broadcast signals or different path from the broadcast signals.
6. The apparatus of claim 4 , wherein the service component information further include information indicating a type of each component.
7. A method for receiving broadcast signals, the method comprising:
receiving at least one broadcast signal,
wherein the broadcast signal includes a first symbol and a second symbol at a beginning of the modulated data,
wherein the first symbol includes a suffix in a time domain which is obtained from a part of the first symbol based on a frequency shifting method, and
wherein the second symbol includes a prefix in the time domain which is obtained from a part of the second symbol based on a frequency shifting method;
demodulating the received at least one broadcast signal by an OFDM scheme;
parsing a signal frame from the demodulated at least one broadcast signal, wherein the signal frame includes a preamble and Physical Layer Pipes (PLPs), and
wherein the preamble includes PLP ID information identifying each PLP and wherein the PLPs include signaling information and broadcast data, wherein a PLP includes at least one service component, and
wherein a first PLP among the plurality of PLPs carries service signaling data describing the service and a second PLP among the plurality of PLPs which is different from the first PLP and which carries a mapping table that include a PLP identifier, and
wherein the mapping table carries information for mapping between a PLP corresponding to the PLP identifier and components of the service described in the service signaling data carried in the first PLP;
decoding data in the parsed signal frame, wherein service component information include service ID identifying a service and address information for at least one service component belongs to the service.
8. The method of claim 7 , wherein the service component information is received in the broadcast signals or different path from the broadcast signals.
9. The method of claim 7 , wherein the service component information further include information indicating a type of each component.
10. An apparatus for receiving broadcast signals, the apparatus comprising:
a receiver to receive at least one broadcast signal, wherein the broadcast signal includes a first symbol and a second symbol at a beginning of the modulated data,
wherein the first symbol includes a suffix in a time domain which is obtained from a part of the first symbol based on a frequency shifting method, and
wherein the second symbol includes a prefix in the time domain which is obtained from a part of the second symbol based on a frequency shifting method;
a demodulator to demodulate the received at least one broadcast signal by an OFDM scheme;
a frame parser to parse a signal frame from the demodulated at least one broadcast signal, wherein the signal frame includes a preamble and Physical Layer Pipes (PLPs), and
wherein the preamble includes PLP ID information identifying each PLP and wherein the PLPs include signaling information and broadcast data, wherein a PLP includes at least one service component, and
wherein a first PLP among the plurality of PLPs carries service signaling data describing the service and a second PLP among the plurality of PLPs which is different from the first PLP and which carries a mapping table that include a PLP identifier, and
wherein the mapping table carries information for mapping between a PLP corresponding to the PLP identifier and components of the service described in the service signaling data carried in the first PLP;
a decoder to decode data in the parsed signal frame, wherein service component information include service ID identifying a service and address information for at least one service component belongs to the service.
11. The apparatus of claim 10 , wherein the service component information is received in the broadcast signals or different path from the broadcast signals.
12. The apparatus of claim 10 , wherein the service component information further include information indicating a type of each component.