Method for determining transport block size and signal transmission method using the same
AssigneeLG Electronics Inc.
InventorsBong Hoe Kim, Ki Jun Kim, Joon Kui Ahn, Dong Youn Seo
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Abstract
A method for determining a transport block size and a signal transmission method using the same are disclosed. When the signal transmission method constructs a transport block size combination by predetermining the transport block size, it prevents the insertion of any dummy bits in consideration of the limitation of an input bit length of an encoder during an encoding step. If a CRC is attached to the transport block and the transport block is segmented into a plurality of code blocks, the signal transmission method can establish a length of the transport block in consideration of a length of the CRC attached to each code block.
Claims18
A method of channel coding data to be transmitted from a first device to a second device, the method comprising:
- attaching a first CRC code to a transport block to produce a CRC-attached transport block;
- identifying whether a length of the CRC-attached transport block is longer than a predetermined length;
- segmenting the CRC-attached transport block into multiple code blocks, if the length of the CRC-attached transport block is longer than the predetermined length;
- attaching a second CRC code to each of the multiple code blocks;
- and
- encoding each of the second CRC-attached code blocks by a turbo-encoder including an internal interleaver,
- wherein a length of the transport block is selected from predetermined transport block lengths, and any one of the predetermined transport block lengths is predetermined such that a sum of a length of one code block from among the multiple code blocks and a length of the second CRC code is equal to a block size of the internal interleaver.
A device configured to channel coding data to be transmitted to an external device, the device comprising:
- a processor configured to
- attach a first CRC code to a transport block to produce a CRC-attached transport block;
- identify whether a length of the CRC-attached transport block is longer than a predetermined length;
- segment the CRC-attached transport block into multiple code blocks, if the length of the CRC-attached transport block is longer than the predetermined length;
- and
- attach a second CRC code to each of the multiple code blocks;
- and
- a turbo-encoder comprising an internal interleaver,
- wherein the internal interleaver having a plurality of predetermined block sizes, wherein the turbo-encoder is configured to encode each of the second CRC-attached code blocks, and
- wherein a length of the transport block is selected from predetermined transport block lengths, and any one of the predetermined transport block lengths is predetermined such that a sum of a length of one code block from among the multiple code blocks and a length of the second CRC code is equal to one of the plurality of predetermined block sizes of the internal interleaver.
A signal transmission method, comprising:
- determining a number of code blocks to be used for transmitting a transport block with a specific size, and mapping the transport block to the code blocks corresponding to the determined number;
- attaching a cyclic redundancy check (CRC) to each of the code blocks;
- encoding each of the CRC-attached code blocks by a turbo-encoder including an internal interleaver;
- and
- transmitting the encoded code blocks,
- wherein the specific size of the transport block corresponds to any transport block size in predetermined transport block size combinations, and
- wherein any transport block size in the predetermined transport block size combinations is predetermined such that a sum of a length of any one code block from among the code blocks mapped to the transport block with the specific size and a length of the CRC attached to the one code block is equal to a block size of the internal interleaver.
Dependencies are inferred from the claim text.