A transport block CRC attachment
(A) Technical Specification
Error detection is provided on each transport block cyclic redundancy check (CRC).
The entire transport block is used to calculate the CRC parity bits. Referred to a transport block delivered to layer 1 bit is \ (A_ {0}, {1} A_, A_ {2}, {A_. 3}, \ DOTS, A-1 A_ {} \) , parity bits are referred to as \ (P_ {0}, P_ {. 1}, P_ {2}, P_ {. 3}, \ DOTS, P_ {L-. 1} \) , where \ (a \) is the size of the payload, \ (L \ ) is the number of bits of parity bits. Information lowest order bit \ (a_ {0} \) the most significant bit is mapped to the transport block.
Calculating parity bits appended to the DL-SCH transport block according to the protocol rules. When (A> 3824 \) \ , set \ (L \) is 24 bits and using the generator polynomial \ (G _ {\ mathrm {the CRC} 24 \ mathrm {A}} (D) \) ; otherwise, set \ (L \) is 16 bits and using the generator polynomial \ (G _ {\ mathrm CrCl} {}. 6 (D) \) .
Bits after CRC attachment referred to as \ (B_ {0}, B_ {. 1}, B_ {2}, B_ {. 3}, \ ldots, B_ {B-. 1} \) , where \ (B = A + L \ ) .
(B) illustrates Detailed
(Iii) Scheme
To be continued ......