US 9,813,275 B2
Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals
Yonghak Suh, Seoul (KR); Sangchul Moon, Seoul (KR); Jongwoong Shin, Seoul (KR); Woosuk Ko, Seoul (KR); and Sungryoung Hong, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jan. 27, 2017, as Appl. No. 15/418,353.
Application 15/418,353 is a continuation of application No. 14/627,377, filed on Feb. 20, 2015.
Claims priority of provisional application 61/942,581, filed on Feb. 20, 2014.
Claims priority of provisional application 61/942,584, filed on Feb. 20, 2014.
Claims priority of provisional application 61/942,586, filed on Feb. 20, 2014.
Claims priority of provisional application 61/950,196, filed on Mar. 9, 2014.
Claims priority of provisional application 61/968,329, filed on Mar. 20, 2014.
Claims priority of provisional application 62/002,154, filed on May 22, 2014.
Prior Publication US 2017/0141942 A1, May 18, 2017
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 27/00 (2006.01); H04L 27/26 (2006.01); H04L 1/00 (2006.01)
CPC H04L 27/2627 (2013.01) [H04L 1/0042 (2013.01); H04L 1/0071 (2013.01); H04L 27/2649 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for transmitting broadcast signals by an apparatus for transmitting broadcast signals, the method comprising:
encoding service data;
bit interleaving the encoded service data, wherein the bit interleaving includes:
first interleaving the encoded service data, wherein the first interleaving interleaves parity bits of the encoded service data, wherein the first interleaved service data includes a number of blocks;
second interleaving the number of blocks in the first interleaved service data by using an interleaving pattern for a combination of a Quadrature Phase Shift Keying (QPSK) modulation type, a 6/15 code rate, and a 16200 code word length of the encoded service data, wherein each block has 360 bits, wherein the interleaving pattern is represented as
 
    6/15
    π(j)-th
  j-th block block of
  of Group- Group-
  wise wise
  Interleaver Interleaver
  output input
 
 
  0  7
  1  4
  2  0
  3  5
  4 27
  5 30
  6 25
  7 13
  8 31
  9  9
  10 34
  11 10
  12 17
  13 11
  14  8
  15 12
  16 15
  17 16
  18 18
  19 19
  20 20
  21 21
  22 22
  23 23
  24  1
  25 35
  26 24
  27 29
  28 33
  29  6
  30 26
  31 14
  32 32
  33 28
  34  2
  35  3
  36 36
  37 37
  38 38
  39 39
  40 40
  41 41
  42 42
  43 43
  44  44,
 
wherein j-th block of the number of blocks is interleaved by a block unit according to the interleaving pattern;
third interleaving the second interleaved service data, wherein the third interleaving performs:
row-wise writing bits of each block in the second interleaved service data, wherein a number of rows is based on the modulation type, and
column-wise reading out 1 bit of the written each block, wherein a number of columns corresponds to 360;
building at least one signal frame including the bit interleaved service data;
modulating data in the built at least one signal frame by an Orthogonal Frequency Division Multiplex (OFDM) scheme; and
transmitting the broadcast signals having the modulated data.