Method and apparatus for transmitting uplink data in a wireless access system
A method of channel coding for transmitting data in a wireless access system includes: calculating a number C of code blocks by an equation of C=┌B/(Z−L)┐, wherein B denotes a size of an input bit sequence, wherein Z denotes a maximum size of the code blocks, and wherein L denotes a size of a cyclic redundancy check (CRC) which is to be attached to each of the code blocks; calculating a size B′ of a modified input bit sequence by an equation of B′=B+C*L; generating the code blocks based on the number C of the code blocks and the size B′ of the modified input bit sequence; and channel-coding the code blocks.
1. A method for transmitting data in a wireless access system, the method comprising:
obtaining a number C of code blocks by an equation C=┌B/(Z−L)┐, wherein B denotes a size of an input bit sequence, wherein Z denotes a maximum size of the code blocks, and wherein L denotes a size of a cyclic redundancy check (CRC) to be attached to each of the code blocks;
obtaining a size B′ of a modified input bit sequence according to an equation B′=B+C*L;
generating the code blocks based on the number C of the code blocks and the size B′ of the modified input bit sequence; and
transmitting the data using the code blocks.
2. The method according to claim 1 , wherein the obtaining the number C is performed when the size B of the input bit sequence is larger than the maximum size Z of the code blocks.
3. The method according to claim 1 , further comprising attaching the CRC to each of the code blocks for detecting whether each of the code blocks contains errors.
4. The method according to claim 1 , further comprising generating the input bit sequence by attaching the CRC to the data.
5. The method according to claim 1 , wherein the size L of the CRC is 24 bits and the maximum size Z of the code blocks is 6144 bits.
6. The method according to claim 1 , wherein the obtaining the number C further includes considering the size of the CRC attached to each of the code blocks.
7. An apparatus configured for transmitting data in a wireless access system, the apparatus comprising:
a transmitter; and
a controller configured to:
obtain a number C of code blocks by an equation C=┌B/(Z−L)┐, wherein B denotes a size of an input bit sequence, wherein Z denotes a maximum size of the code blocks, and wherein L denotes a size of a cyclic redundancy check (CRC) to be attached to each of the code blocks;
obtain a size B′ of a modified input bit sequence according to an equation B′=B+C*L;
generate the code blocks based on the number C of the code blocks and the size B′ of the modified input bit sequence; and
cause the transmitter to transmit the data using the code blocks.
8. The apparatus according to claim 7 , wherein the controller is further configured to obtain the number C of the code blocks when the size B of the input bit sequence is larger than the maximum size Z of the code blocks.
9. The apparatus according to claim 7 , wherein the CRC is attached to each of the code blocks for detecting whether each of the code blocks contains errors.
10. The apparatus according to claim 7 , wherein the input bit sequence is generated by attaching a CRC to the data.
11. The apparatus according to claim 7 , wherein the size L of the CRC is 24 bits and the maximum size Z of the code blocks is 6144 bits.
12. The apparatus according to claim 7 , wherein the controller is further configured to consider the number C based on the size of the CRC attached to each of the code blocks.