Method and apparatus for transmitting or receiving data in broadcast system

Abstract

Methods and apparatus for transmitting and receiving data having a data stream in a wireless broadcast system are provided. A frame is generated. The frame includes preamble section and a data section. The data section carries the data stream. The preamble section carries signalling information. The frame is transmitted to a receiver. In generating the frame, the data section of the frame is segmented into a plurality of frequency zones, and the data stream is mapped to a frequency zone of the plurality of frequency zones. The signalling information includes segmentation information of the frequency zones.

1 . A method of transmitting data comprising a data stream in a broadcast system, the method comprising the steps of:
 generating a frame, wherein the frame comprises a preamble section and a data section, the data section carries the data stream, and the preamble section carries signalling information; and   transmitting the frame to a receiver,   wherein generating the frame comprises:
 segmenting the data section of the frame into a plurality of frequency zones; and 
 mapping the data stream to a frequency zone of the plurality of frequency zones, and 
   wherein the signalling information comprises segmentation information of the frequency zones.   
     
     
         2 . The method of  claim 1 , wherein the preamble section is transmitted within a first frequency bandwidth and the data stream is transmitted within the frequency zone having a second frequency bandwidth, wherein the first frequency bandwidth is greater than the second frequency bandwidth. 
     
     
         3 . The method of  claim 1 , wherein the segmentation information comprises number information of the plurality of frequency zones and size information of each of the plurality of frequency zones. 
     
     
         4 . The method of  claim 1 , further comprising inserting pilot tones into the frame in a pattern that is independent of the frequency zone segmentation. 
     
     
         5 . The method of  claim 1 , further comprising mapping components carried within the frame to a same frequency zone,
 wherein the data stream comprises components of a scalable video coding scheme.   
     
     
         6 . The method of  claim 1 , wherein the preamble section comprises L1-config, L1-dynamic, and L1-dynamic EXT sections, the L1-cofig section has signalling information that is substantially identical for each frame of a super-frame, the L1-dynamic section has signalling information for reception of a first number of data streams, and the L1-dynamic EXT section has signalling information for reception of further data streams after the first number of data streams. 
     
     
         7 . A method of receiving data comprising a data stream in a broadcast system, the method comprising the steps of:
 receiving a frame, wherein the frame comprises a preamble section and a data section, the data section carries the data stream, the preamble section carries signalling information, and the data section is segmented into a plurality of frequency zones; and   demodulating the frame,   wherein the data stream is mapped to a frequency zone of the plurality of frequency zones, and   wherein the signalling information comprises segmentation information of the plurality of frequency zones.   
     
     
         8 . The method of  claim 7 , wherein the preamble section is received within a first frequency bandwidth and the data stream is received within the frequency zone having a second frequency bandwidth, wherein the first frequency bandwidth is greater than the second frequency bandwidth. 
     
     
         9 . The method of  claim 7 , wherein the segmentation information comprises number information of the plurality of frequency zones and size information of each of the plurality of frequency zones. 
     
     
         10 . The method of  claim 7 , wherein the frame has pilot tones in a pattern that is independent of the frequency zone segmentation. 
     
     
         11 . The method of  claim 7 , further comprising mapping components carried within the frame to a same frequency zone,
 wherein the data stream comprises components of a scalable video coding scheme.   
     
     
         12 . The method of  claim 7 , wherein the preamble section comprises L1-config, L1-dynamic, and L1-dynamic EXT sections, the L1-cofig section has signalling information that is substantially identical for each frame of a super-frame, the L1-dynamic section has signalling information for reception of a first number of data streams, and the L1-dynamic EXT section has signalling information for reception of further data streams after the first number of data streams. 
     
     
         13 . A transmitter for transmitting data comprising a data stream in a broadcast system, the transmitter comprising:
 a segmenting and mapping unit for segmenting the data section carrying the data stream in a frame into a plurality of frequency zones and for mapping the data stream to a frequency zone of the plurality of frequency zones;   a signalling generation block for delivering signalling information; and   an Orthogonal Frequency Division Multiplexing (OFDM) generation unit for mapping the data stream and the signalling information onto OFDM resources,   wherein the signalling information comprises segmentation information of the plurality of frequency zones.   
     
     
         14 . The transmitter of  claim 13 , wherein the signalling information is transmitted within a first frequency bandwidth and the data stream is transmitted within the frequency zone having a second frequency bandwidth, wherein the first frequency bandwidth is greater than the second frequency bandwidth. 
     
     
         15 . The transmitter of  claim 13 , wherein the segmentation information comprises number information of the plurality of frequency zones and size information of each of the plurality of frequency zones. 
     
     
         16 . The transmitter of  claim 13 , wherein the signalling information comprises L1-config, L1-dynamic, and L1-dynamic EXT sections, the L1-cofig section has signalling information that is substantially identical for each frame of a super-frame, the L1-dynamic section has signalling information for reception of a first number of data streams, and the L1-dynamic EXT section has signalling information for reception of further data streams after the first number of data streams. 
     
     
         17 . A receiver for receiving data comprising a data stream in a broadcast system, the receiver comprising:
 a signal processing unit for processing a received signal for demodulation, the received signal having at least one frame, a frame comprises a preamble section and a data section, the data section carries the data stream, the preamble section carries signalling information, and the data section is segmented into a plurality of frequency zones;   a controller for controlling the signal processing unit to process the signalling information and the data stream, wherein the data stream is received via a segmented frequency zone of the plurality of frequency zones; and   a demodulator for demodulating the data stream and the signalling information,   wherein the signalling information comprises segmentation information of the plurality of frequency zones.   
     
     
         18 . The receiver of  claim 17 , wherein the signalling information is transmitted within a first frequency bandwidth and the data stream is transmitted within the segmented frequency zone having a second frequency bandwidth, wherein the first frequency bandwidth is greater than the second frequency bandwidth. 
     
     
         19 . The receiver of  claim 17 , wherein the segmentation information comprises number information of the plurality of frequency zones and size information of each of the plurality of frequency zones. 
     
     
         20 . The receiver of  claim 17 , wherein the signalling information comprises L1-config, L1-dynamic, and L1-dynamic EXT sections, the L1-cofig section has signalling information which is typically the same for each frame of a super-frame, the L1-dynamic section has signalling information for reception of a first number of data streams, and the L1-dynamic EXT section has signalling information for reception of further data streams after the first number of data streams.