Error correction methods and apparatus for mobile broadcast services

1. An outer Forward Error Correcting (FEC) coding apparatus for a mobile broadcast service based on TD-SCDMA network, including:

a source information coding unit configured to encode image or speech into an information package for the mobile broadcast service;

an outer FEC coding unit connected to the source information coding unit and configured to perform Reed-Solomon (RS) encoding of the information package for error correcting;

an outer interleaving unit connected to the outer FEC coding unit and configured to perform interleaving of the RS encoded information package such that continuous error bytes are randomized; and

a transport channel multiplexing unit connected to the outer interleaving unit and configured to perform transport channel data multiplexing and mapping to a physical channel,

wherein parameters of the transport channel unit is set to:

a transport block size: 408 bits;

a transport block number: 5, 6, 7 or 8;

TFCI index: 0→5×408, 1→6×408, 2→6×408, 3→8×408;

CRC check: 16 bits;

channel coding type: ⅓ turbo encoding;

physical channel resource: one timeslot and 16 radio units (RUs) in the timeslot;

puncture limit: 55%;

TTI: 20 ms.

2. An outer Forward Error Correcting (FEC) coding apparatus for a mobile broadcast service based on TD-SCDMA network, including:

a source information coding unit configured to encode image or speech into an information package for the mobile broadcast service;

an outer FEC coding unit connected to the source information coding unit and configured to perform Reed-Solomon (RS) encoding of the information package for error correcting;

an outer interleaving unit connected to the outer FEC coding unit and configured to perform interleaving of the RS encoded information package such that continuous error bytes are randomized; and

a transport channel multiplexing unit connected to the outer interleaving unit and configured to perform transport channel data multiplexing and mapping to a physical channel,

wherein parameters of the transport channel unit is set to:

a transport block size: 204 bits;

a transport block number: 10, 11, 12, 13, 14, 15 or 16;

TFCI index: 0→10×204, 1→11×204, 2→12×204, 3→13×204, 4→14×204, 5→15×204, 6→16×204;

CRC check: 0 bits;

channel coding type: ⅓ turbo encoding;

physical channel resource: one timeslot, and 16 radio units (RUs) in the timeslot;

puncture limit: 55%;

TTI: 80 ms.

3. An outer Forward Error Correcting (FEC) coding method for a mobile broadcast service based on TD-SCDMA network, including:

coding source information including encoding of image or speech into an information package for the mobile broadcast service;

performing outer FEC coding including performing Reed-Solomon encoding of the information package for error correcting;

performing outer interleaving including performing interleaving of the RS encoded information package such that continuous error bytes are randomized; and

performing transport channel multiplexing including performing transport channel data multiplexing and mapping to a physical channel,

wherein parameters of the transport channel unit are set to:

a transport block size: 408 bits;

a transport block number: 5, 6, 7 or 8;

TFCI index: 0→5×408, 1→6×408, 2→6×408, 3→8×408;

CRC check: 16 bits;

channel coding type: ⅓ turbo encoding;

physical channel resource: one timeslot and 16 radio units (RUs) in the timeslot;

puncture limit: 55%;

TTI: 20 ms.

4. An outer Forward Error Correcting (FEC) coding method for a mobile broadcast service based on TD-SCDMA network, including:

coding source information including encoding of image or speech into an information package for the mobile broadcast service;

performing outer FEC coding including performing Reed-Solomon encoding of the information package for error correcting;

performing outer interleaving including performing interleaving of the RS encoded information package such that continuous error bytes are randomized; and

performing transport channel multiplexing including performing transport channel data multiplexing and mapping to a physical channel,

wherein parameters of the transport channel unit are set to:

the transport block size: 204 bits;

the transport block number: 10, 11, 12, 13, 14, 15 or 16;

TFCI index: 0→10×204, 1→11×204, 2→12×204, 3→13×204, 4→14×204, 5→15×204, 6→16×204;

CRC check: 0 bits;

channel coding type: ⅓ turbo encoding, the same as specified in 3GPP;

physical channel resource: one timeslot, and 16 radio units (RUs) in the timeslot;

puncture limit: 55%;

TTI: 80 ms.