Transmission apparatus and method for transmission of data in a multi-carrier broadcast system

Abstract

A transmission apparatus and method, respectively, mapping payload data of mapping input data streams onto a mapping output data stream having a channel bandwidth for transmission in a multi-carrier broadcast system. To enable selection of robustness for transmission of data, the apparatus includes a frame forming mechanism mapping data blocks of at least two mapping input data streams onto frames of the mapping output data stream covering the channel bandwidth, each frame including a payload portion, the payload portion including plural data symbols and being segmented into data segments each covering a bandwidth portion of the channel bandwidth. The frame forming mechanism is configured to map the data blocks of the at least two mapping input data streams onto data symbols of the payload portion and includes a MIMO mode selector selecting a MIMO mode of the data blocks per data segment and/or per mapping input data stream.

1 . (canceled) 
     
     
         2 . A transmission apparatus comprising:
 circuitry configured to map multiple input data streams representing physical data pipes (PLPs) onto a transmission frame, the transmission frame having a channel bandwidth and including OFDM symbols following each other in a time direction and being arranged into groups of OFDM symbols, each group of OFDM symbols being assigned a MIMO mode, the MIMO modes being selected from a SISO scheme, a MISO scheme and a MIMO scheme, wherein a first group of OFDM symbols in the frame is assigned a different MIMO mode from a second group of OFDM symbols in the frame; and   output circuitry configured to convey output data streams including one or more frames including the transmission frame to transmission circuitry.   
     
     
         3 . The transmission apparatus according to  claim 2 , wherein
 a group of OFDM symbols is segmented into slices, and   the circuitry is configured to map a single PLP to a slice.   
     
     
         4 . The transmission apparatus according to  claim 2 , wherein
 the circuitry is configured to assign a different MIMO mode from one group of OFDM symbols to a next group of OFDM symbols in the time direction.   
     
     
         5 . The transmission apparatus according to  claim 4 , wherein
 one group of OFDM symbols of the groups of OFDM symbols is segmented into slices.   
     
     
         6 . The transmission apparatus according to  claim 2 , wherein
 each of the groups of OFDM symbols is a payload data portion.   
     
     
         7 . The transmission apparatus according to  claim 6 , wherein
 a payload data portion includes a payload portion signaling block including detailed signaling information.   
     
     
         8 . The transmission apparatus according to  claim 7 , wherein
 the detailed signaling information includes the MIMO mode.   
     
     
         9 . The transmission apparatus according to  claim 6 , wherein
 the circuitry is configured to map a preamble to the frame, the preamble including high level signaling.   
     
     
         10 . The transmission apparatus according to  claim 2 , further comprising
 pilot insertion circuitry configured to insert pilots according to different pilot patterns for the MIMO mode assigned to a group of OFDM symbols.   
     
     
         11 . A method of transmitting data comprising:
 mapping, by circuitry, multiple input data streams representing physical data pipes (PLPs) onto a transmission frame, the transmission frame having a channel bandwidth and including OFDM symbols following each other in a time direction and being arranged into groups of OFDM symbols, each group of OFDM symbols being assigned MIMO a mode, the MIMO modes being selected from a SISO scheme, a MISO scheme and a MIMO scheme, wherein a first group of OFDM symbols in the frame is assigned a different MIMO mode from a second group of OFDM symbols in the frame; and   conveying an output data stream comprising one or more frames including the transmission frame to transmission circuitry.   
     
     
         12 . A receiver apparatus comprising:
 receiver circuitry configured to receive input data streams having a transmission frame structure and representing physical data pipes (PLPs);   demapping circuitry configured to demap the input data streams from a transmission frame, the transmission frame having a channel bandwidth and including OFDM symbols following each other in a time direction and being arranged into groups of OFDM symbols, each group of OFDM symbols having associated thereto an indication of a MIMO mode, the MIMO modes being selected from a SISO scheme, a MISO scheme and a MIMO scheme, wherein a first group of OFDM symbols in the frame has associated thereto a different MIMO mode from a second group of OFDM symbols in the frame; and   output circuitry configured to convey output data streams demapped from one or more frames including the transmission frame to post processing circuitry.   
     
     
         13 . The receiver apparatus according to  claim 12 , wherein
 a group of OFDM symbols is segmented into slices, and   the circuitry is configured to demap a single PLP from a slice.   
     
     
         14 . The receiver apparatus according to  claim 12 , wherein
 the circuitry is configured to derive a different MIMO mode from one group of OFDM symbols to a next group of OFDM symbols in the time direction.   
     
     
         15 . The receiver apparatus according to  claim 14 , wherein
 one group of OFDM symbols of the groups of OFDM symbols is segmented into slices.   
     
     
         16 . The receiver apparatus according to  claim 12 , wherein
 each of the groups of OFDM symbols is a payload data portion.   
     
     
         17 . The receiver apparatus according to  claim 16 , wherein
 a payload data portion includes a payload portion signaling block including detailed signaling information.   
     
     
         18 . The receiver apparatus according to  claim 17 , wherein
 the detailed signaling information includes the MIMO mode.   
     
     
         19 . The receiver apparatus according to  claim 16 , wherein
 the demapping circuitry is configured to demap a preamble to the frame, the preamble including high level signaling.   
     
     
         20 . The receiver apparatus according to  claim 12 , further comprising
 pilot detection circuitry configured to detect pilots, the pilots having different pilot patterns for the MIMO mode associated with a group of OFDM symbols.   
     
     
         21 . A method of receiving data comprising:
 receiving, by circuitry, input data streams having a transmission frame structure and representing physical data pipes (PLPs);   demapping the input data streams from the transmission frame, the transmission frame having a channel bandwidth and including OFDM symbols following each other in a time direction and being arranged into groups of OFDM symbols, each group of OFDM symbols having associated thereto an indication of a MIMO mode, the MIMO modes being selected from a SISO scheme, a MISO scheme and a MIMO scheme, wherein a first group of OFDM symbols in the frame has associated thereto a different MIMO mode from a second group of OFDM symbols in the frame; and   conveying output data streams demapped from one or more frames including the transmission frame to post processing circuitry.