Method and apparatus for code block segmentation in a mobile communication system

A method for segmenting an information word into code blocks in a mobile communication system, the method comprising:

• setting a number C of code blocks to a minimum integer not less than a value obtained by dividing X by Z when a length X of the information word is greater than a maximum length Z of each code block;
• setting a minimum size U of each code block so the minimum size U has a size obtained by calculating in units of bits a value having a maximum integer not greater than a value obtained by dividing a value obtained by converting X in units of bytes by C when sizes K of the code blocks are determined to be different from each other;
• setting a size of R code blocks among the C code blocks, wherein R corresponds to a value obtained by dividing by eight a difference between X and a product of C and U, and each of the R code blocks has a size greater by one byte than U;
• and
• setting remaining code blocks obtained by excluding the R code blocks from the C code blocks so the remaining code blocks have a size of U.

A method for channel-encoding and transmitting an information word in a mobile communication system, the method comprising:

• a segmentation process of;
• setting a number C of code blocks to a minimum integer not less than a value obtained by dividing X by Z when a length X of the information word is greater than a maximum length Z of each code block;
• determining a minimum integer value T not less than a value obtained by dividing a size of the information word by a number of code blocks when sizes K of all code blocks are determined to be equal, and determining, as K, a maximum value most approaching the value T among the values based on which a size of the code block can be set in units of eight bits;
• and
• generating segmented code blocks by inserting filler bits into a specific code block when a value obtained by multiplying K by C is greater than X;
• channel-encoding the segmented code blocks independently;
• and
• channel-modulating the channel-encoded code blocks before transmission.

A method for channel-encoding and transmitting an information word in a mobile communication system, the method comprising:

• a segmentation process of;
• setting a number C of code blocks to a minimum integer not less than a value obtained by dividing X by Z when a length X of the information word is greater than a maximum length Z of each code block;
• setting a minimum size U of each code block so the minimum size U has a size obtained by calculating in units of bits a value having a maximum integer not greater than a value obtained by dividing a value obtained by converting X in units of bytes by C when sizes K of the code blocks are determined to be different from each other;
• setting a size of R code blocks among the C code blocks, wherein R corresponds to a value obtained by dividing by eight a difference between the X and a product of C and U, and each of the R code blocks has a size greater by one byte than U;
• and
• setting remaining code blocks obtained by excluding the R code blocks from the C code blocks so the remaining code blocks have a size of U;
• channel-encoding the segmented code blocks independently;
• and
• channel-modulating the channel-encoded code blocks before transmission.

An apparatus for segmenting an information word into code blocks before transmission in a mobile communication system, the apparatus comprising:

• a segmentation unit for;
• setting a number C of code blocks to a minimum integer not less than a value obtained by dividing X by Z when a length X of the information word is greater than a maximum length Z of each code block;
• determining a minimum integer value T not less than a value obtained by dividing a size of the information word by a number of code blocks when sizes K of all code blocks are determined to be equal, and determining, as K, a maximum value most approaching the value T among the values based on which a size of the code block can be set in units of eight bits;
• and
• generating segmented code blocks by inserting filler bits into a specific code block when a value obtained by multiplying K by C is greater than X;
• a channel encoder for channel-encoding the segmented code blocks independently;
• a channel modulator for channel-modulating the channel-encoded code blocks;
• and
• a transmitter for converting an output of the channel modulator into a transmission-band signal.

An apparatus for segmenting an information word into code blocks before transmission in a mobile communication system, the apparatus comprising:

• a segmentation unit for;
• setting a number C of code blocks to a minimum integer not less than a value obtained by dividing X by Z when a length X of the information word is greater than a maximum length Z of each code block;
• setting a minimum size U of each code block so the minimum size U has a size obtained by calculating in units of bits a value having a maximum integer not greater than a value obtained by dividing a value obtained by converting X in units of bytes by C when sizes K of the code blocks are determined to be different from each other;
• setting a size of R code blocks among the C code blocks, wherein the R corresponds to a value obtained by dividing by eight a difference between X and a product of C and U, and each of the R code blocks has a size greater by one byte than U;
• and
• setting remaining code blocks obtained by excluding the R code blocks from the C code blocks so the remaining code blocks have a size of U;
• a channel encoder for channel-encoding the segmented code blocks independently;
• a channel modulator for channel-modulating the channel-encoded code blocks;
• and
• a transmitter for converting an output of the channel modulator into a transmission-band signal.