# Patent

## Title
Method for determining transport block size and signal transmission method using the same

## Abstract

A method and device for determining a size of a transport block based on modulation and coding related information, and resource information.

## Background
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a Continuation of application Ser. No. 12/332,165 (now U.S. Pat. No. 8,266,513) filed on Dec. 10, 2008, which claims priority to Korean Patent Application 10-2008-0097705, filed on Oct. 6, 2008, U.S. Provisional Application 61/024,914 filed on Jan. 31, 2008 and U.S. Provisional Application 61/026,143 filed on Feb. 5, 2008. The entire contents of all of the above applications are hereby incorporated by reference.


BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method and device for effectively determining the size of a data block or a transport block in a wireless communication system, and a method for transmitting signals using the same method.
2. Discussion of the Background Art
Generally, in a communication system, a transmission end of the communication system encodes transmission information using a forward error correction code, and transmits the encoded information to a reception end of the communication system, such that errors caused by a channel can be corrected in the information received in the reception end. The reception end demodulates a reception signal, decodes a forward error correction code, and recovers the transmission information transferred from the transmission end. During this decoding process, reception signal errors caused by a channel can be corrected.
There are various kinds of forward error correction codes that may be used. For the convenience of description, a turbo code will hereinafter be described as an example of the forward error correction code. The turbo code includes a recursive systematic convolution encoder and an interleaver. In case of actually implementing the turbo code, the interleaver facilitates parallel decoding, and an example of this interleaver may be a quadratic polynomial permutation (QPP) interleaver. It is well known in the art that this QPP interleaver maintains a superior throughput or performance in only a specific-sized data block. In this case, the term “data block” is block unit data encoded by the encoder. If we think block unit data transferred from an upper layer to a physical layer is encoded without segmentation discussed below, this data block may also be called as a transport block (TB). On the other hand, if we think the segmentation of the transport block to be encoded, this data block may be matched to “a code block”.
In general, the larger the data-block size, the higher the turbo-code performance. A data block of more than a specific size is segmented into a plurality of small-sized data blocks by an actual communication system, such that the small-sized data blocks are encoded for the convenience of actual implementation. The divided small-sized data blocks are called code blocks. Generally, although these code blocks have the same size, one of several code blocks may have another size due to the limitation of the QPP interleaver size. A forward error correction coding process on the basis of a code block of a predetermined interleaver size is performed on the small-sized data blocks, and the resultant data blocks are then transferred to an RF (Radio Frequency) channel. In this case, a burst error may occur in the above process of transferring the resultant data blocks to the RF channel, such that the above resultant data blocks are interleaved to reduce an influence of the burst error. The interleaved data blocks are mapped to actual radio resources, such that the mapped result is transferred.
An amount of radio resources used in an actual transmission process is constant, such that a rate matching process should be performed on the encoded code blocks due to the constant amount of radio resources. Generally, the rate matching process is implemented by a puncturing or a repetition. For example, the rate matching may also be performed on the basis of an encoded code block in the same manner as in a WCDMA of the 3GPP. For another example, a systematic part and a parity part of the encoded code block may be separated from each other. The rate matching process may be performed on the systematic part and the parity part together. On the other hand, the rate matching process may also be independently performed on each of the systematic part and the parity part.
FIG. 1 is a conceptual diagram illustrating basic operations of a turbo encoder.
As shown in FIG. 1, if a turbo-encoder receives one code block, it divides the received one code block into a systematic part (S) and parity parts (P1 and P2). The systematic part S and the parity parts P1 and P2 pass through individual sub-block interleavers, respectively. Thus, the systematic part S and the parity parts P1 and P2 may be interleaved by different sub-block interleavers, and the interleaved result is stored in a circular buffer.
As can be seen from FIG. 1, the systematic part and the parity parts of the code block may be separated from each other, and the rate matching process is performed on the individual separated parts, but the example of FIG. 1 has been disclosed for only illustrative purposes and the scope and spirit of the present invention are not limited to this example and can also be applied to other examples. For the convenience of description, it is assumed that a code rate is a value of 1⁄3.
Although a variety of transport block sizes may be defined according to service categories of an upper layer, it is preferable that the transport block sizes may be quantized to effectively perform the signaling of various transport block sizes. During the quantization process, in order to adjust a source data block transferred from an upper layer to the size of a data block of a physical layer, a dummy bit is added to the source data block. During this quantization process, it is preferable to minimize the amount of added dummy bits.
SUMMARY OF THE INVENTION
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, a signal transmission method and device is presented, the method comprising: determining the 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 the sum of a length of any one code block from among the code blocks mapped to the transport block with the specific length and a length of the CRC attached to the one code block is equal to a block size of the internal interleaver.
The block size of the internal interleaver of the turbo-encoder may be predetermined as a combination of predetermined bit lengths.
Under the above-mentioned assumption, if the number of code blocks to be used for transmitting the transport block is 1, the specific transport block size may be any one of the predetermined transport block size combinations in which any one of the predetermined transport block size corresponds to the sum of a CRC length and the predetermined internal interleaver's block sizes.
Under the same assumption, if the number of code blocks to be used for transmitting the transport block is at least 2, the transport block is segmented into at least two code blocks having the same length, and is mapped to the at least two code blocks.
The above-mentioned operations may be generalized as the following expression.
If the specific size of the transport block is N, the number of the code blocks to be used for transmitting the transport block is M, the length of each of the M code blocks is Nc, and the length of the CRC is L, the specific transport block size N may satisfy an equation denoted by N=M*NC−L, and the specific transport block size may correspond to any one of the predetermined transport block size combinations in which a value of NC+L corresponds to the internal interleaver's block sizes predetermined as a combination of predetermined bit lengths.
In more detail, the block size of the internal interleaver of the turbo-encoder may predetermined as ‘K’ value according to an index (i) in a following Table 1:










TABLE 1







i
K



















1
40



2
48



3
56



4
64



5
72



6
80



7
88



8
96



9
104



10
112



11
120



12
128



13
136



14
144



15
152



16
160



17
168



18
176



19
184



20
192



21
200



22
208



23
216



24
224



25
232



26
240



27
248



28
256



29
264



30
272



31
280



32
288



33
296



34
304



35
312



36
320



37
328



38
336



39
344



40
352



41
360



42
368



43
376



44
384



45
392



46
400



47
408



48
416



49
424



50
432



51
440



52
448



53
456



54
464



55
472



56
480



57
488



58
496



59
504



60
512



61
528



62
544



63
560



64
576



65
592



66
608



67
624



68
640



69
656



70
672



71
688



72
704



73
720



74
736



75
752



76
768



77
784



78
800



79
816



80
832



81
848



82
864



83
880



84
896



85
912



86
928



87
944



88
960



89
976



90
992



91
1008



92
1024



93
1056



94
1088



95
1120



96
1152



97
1184



98
1216



99
1248



100
1280



101
1312



102
1344



103
1376



104
1408



105
1440



106
1472



107
1504



108
1536



109
1568



110
1600



111
1632



112
1664



113
1696



114
1728



115
1760



116
1792



117
1824



118
1856



119
1888



120
1920



121
1952



122
1984



123
2016



124
2048



125
2112



126
2176



127
2240



128
2304



129
2368



130
2432



131
2496



132
2560



133
2624



134
2688



135
2752



136
2816



137
2880



138
2944



139
3008



140
3072



141
3136



142
3200



143
3264



144
3328



145
3392



146
3456



147
3520



148
3584



149
3648



150
3712



151
3776



152
3840



153
3904



154
3968



155
4032



156
4096



157
4160



158
4224



159
4288



160
4352



161
4416



162
4480



163
4544



164
4608



165
4672



166
4736



167
4800



168
4864



169
4928



170
4992



171
5056



172
5120



173
5184



174
5248



175
5312



176
5376



177
5440



178
5504



179
5568



180
5632



181
5696



182
5760



183
5824



184
5888



185
5952



186
6016



187
6080



188
6144










Under the above-mentioned assumption, if the number of code blocks to be used for transmitting the transport block is 1, the specific transport block size may be any one of the transport block size combinations in which any transport block size corresponds to the sum of a K value shown in Table 1 and a CRC length.
The above-mentioned operations may be generalized as the following expression.
If the specific size of the transport block is N, the number of the code blocks to be used for transmitting the transport block is M, the length of each of the M code blocks is Nc, and the length of the CRC is L, the specific transport block size N may satisfy an equation denoted by N=M*NC−L, and the specific transport block size may correspond to any one of transport block size combinations in which a value of NC+L corresponds to the K value shown in the above table 1.
The specific size N of the transport block may be set to a length selected from among combinations shown in a following table 2 according to the number M of the code blocks to be used for transmitting the transport block.










TABLE 2







M
N



















2
6200



2
6328



2
6456



2
6584



2
6712



2
6840



2
6968



2
7096



2
7224



2
7352



2
7480



2
7608



2
7736



2
7864



2
7992



2
8120



2
8248



2
8376



2
8504



2
8632



2
8760



2
8888



2
9016



2
9144



2
9272



2
9400



2
9528



2
9656



2
9784



2
9912



2
10040



2
10168



2
10296



2
10424



2
10552



2
10680



2
10808



2
10936



2
11064



2
11192



2
11320



2
11448



2
11576



2
11704



2
11832



2
11960



2
12088



2
12216



3
12384



3
12576



3
12768



3
12960



3
13152



3
13344



3
13536



3
13728



3
13920



3
14112



3
14304



3
14496



3
14688



3
14880



3
15072



3
15264



3
15456



3
15648



3
15840



3
16032



3
16224



3
16416



3
16608



3
16800



3
16992



3
17184



3
17376



3
17568



3
17760



3
17952



3
18144



3
18336



4
18568



4
18824



4
19080



4
19336



4
19592



4
19848



4
20104



4
20360



4
20616



4
20872



4
21128



4
21384



4
21640



4
21896



4
22152



4
22408



4
22664



4
22920



4
23176



4
23432



4
23688



4
23944



4
24200



4
24456



5
24496



5
24816



5
25136



5
25456



5
25776



5
26096



5
26416



5
26736



5
27056



5
27376



5
27696



5
28016



5
28336



5
28656



5
28976



5
29296



5
29616



5
29936



5
30256



5
30576



6
30936



6
31320



6
31704



6
32088



6
32472



6
32856



6
33240



6
33624



6
34008



6
34392



6
34776



6
35160



6
35544



6
35928



6
36312



6
36696



7
36992



7
37440



7
37888



7
38336



7
38784



7
39232



7
39680



7
40128



7
40576



7
41024



7
41472



7
41920



7
42368



7
42816



8
43304



8
43816



8
44328



8
44840



8
45352



8
45864



8
46376



8
46888



8
47400



8
47912



8
48424



8
48936



8
49296



8
49872



9
50448



9
51024



9
51600



9
52176



9
52752



9
53328



9
53904



9
54480



9
55056



10
55416



10
56056



10
56696



10
57336



10
57976



10
58616



10
59256



10
59896



10
60536



10
61176



11
61664



11
62368



11
63072



11
63776



11
64480



11
65184



11
65888



11
66592



11
67296



12
68040



12
68808



12
69576



12
70344



12
71112



12
71880



12
72648



12
73416



13
73712



13
74544



13
75376



13
76208



13
77040



13
77872



13
78704



13
79536



14
80280



14
81176



14
82072



14
82968



14
83864



14
84760



14
85656



15
86016



15
86976



15
87936



15
88896



15
89856



15
90816



15
91776



16
92776



16
93800



16
94824



16
95848



16
96872



16
97896



17
98576



17
99664



17
100752



17
101840



17
102928



17
104016



18
104376



18
105528



18
106680



18
107832



18
108984



18
110136



19
110176



19
111392



19
112608



19
113824



19
115040



19
116256



20
117256



20
118536



20
119816



20
121096



20
122376



21
123120



21
124464



21
125808



21
127152



21
128496



22
130392



22
131800



22
133208



22
134616



23
134848



23
136320



23
137792



23
139264



23
140736



24
142248



24
143784



24
145320



24
146856



25
148176



25
149776



25
151376



25
152976










The method may further comprise: transmitting information indicating a Modulation and Coding Scheme (MCS) and an available resource area size to a reception end, wherein the MCS and the available resource size represent the specific transport block size.
And, if the transport block size value based on the MCS and the available resource size is not contained in the predetermined transport block size combinations, a maximum transport block size in the predetermined transport block size combinations, which is equal to or smaller than the transport block size value based on the MCS and the available resource size; a minimum transport block size in the predetermined transport block size combinations, which is larger than the transport block size value based on the MCS and the available resource size; or a specific transport block size in the predetermined transport block size combinations, which has a minimum difference with the transport block size value based on the MCS and the available resource size, may be used as the specific transport block size.
In another aspect of the present invention, there is provided a signal transmission method comprising: attaching a first cyclic redundancy check (CRC) having a length of L to a transport block having a length of N; segmenting the transport block to which the first CRC is attached into M number of code blocks, each of which has a length of Nc; attaching a second cyclic redundancy check (CRC) having a length of L to each of the M code blocks; encoding, by a turbo-encoder comprising an internal interleaver, the M code blocks, each of which has the second CRC; and transmitting the encoded M code blocks, wherein the transport block size N satisfies an equation denoted by N=M*NC−L (where N, NC, M, and L are natural numbers), where a value of NC+L has any one of block sizes of the internal interleaver of the turbo-encoder.
In another aspect of the present invention, there is provided a signal transmission method comprising: mapping a transport block having a length of N to at least one code block; encoding the at least one code block by a turbo-encoder comprising an internal interleaver; and transmitting the encoded code block, wherein the transport block size N is selected from a transport block size combination comprising all or some of values shown in a following table 3.
















TABLE 3







16
392
1096
3176
6200
12216
22152
37440
62368
101840


24
400
1128
3240
6328
12384
22408
37888
63072
102928


32
408
1160
3304
6456
12576
22664
38336
63776
104016


40
416
1192
3368
6584
12768
22920
38784
64480
104376


48
424
1224
3432
6712
12960
23176
39232
65184
105528


56
432
1256
3496
6840
13152
23432
39680
65888
106680


64
440
1288
3560
6968
13344
23688
40128
66592
107832


72
448
1320
3624
7096
13536
23944
40576
67296
108984


80
456
1352
3688
7224
13728
24200
41024
68040
110136


88
464
1384
3752
7352
13920
24456
41472
68808
110176


96
472
1416
3816
7480
14112
24496
41920
69576
111392


104
480
1448
3880
7608
14304
24816
42368
70344
112608


112
488
1480
3944
7736
14496
25136
42816
71112
113824


120
504
1512
4008
7864
14688
25456
43304
71880
115040


128
520
1544
4072
7992
14880
25776
43816
72648
116256


136
536
1576
4136
8120
15072
26096
44328
73416
117256


144
552
1608
4200
8248
15264
26416
44840
73712
118536


152
568
1640
4264
8376
15456
26736
45352
74544
119816


160
584
1672
4328
8504
15648
27056
45864
75376
121096


168
600
1704
4392
8632
15840
27376
46376
76208
122376


176
616
1736
4456
8760
16032
27696
46888
77040
123120


184
632
1768
4520
8888
16224
28016
47400
77872
124464


192
648
1800
4584
9016
16416
28336
47912
78704
125808


200
664
1832
4648
9144
16608
28656
48424
79536
127152


208
680
1864
4712
9272
16800
28976
48936
80280
128496


216
696
1896
4776
9400
16992
29296
49296
81176
130392


224
712
1928
4840
9528
17184
29616
49872
82072
131800


232
728
1960
4904
9656
17376
29936
50448
82968
133208


240
744
1992
4968
9784
17568
30256
51024
83864
134616


248
760
2024
5032
9912
17760
30576
51600
84760
134848


256
776
2088
5096
10040
17952
30936
52176
85656
136320


264
792
2152
5160
10168
18144
31320
52752
86016
137792


272
808
2216
5224
10296
18336
31704
53328
86976
139264


280
824
2280
5288
10424
18568
32088
53904
87936
140736


288
840
2344
5352
10552
18824
32472
54480
88896
142248


296
856
2408
5416
10680
19080
32856
55056
89856
143784


304
872
2472
5480
10808
19336
33240
55416
90816
145320


312
888
2536
5544
10936
19592
33624
56056
91776
146856


320
904
2600
5608
11064
19848
34008
56696
92776
148176


328
920
2664
5672
11192
20104
34392
57336
93800
149776


336
936
2728
5736
11320
20360
34776
57976
94824
151376


344
952
2792
5800
11448
20616
35160
58616
95848
152976


352
968
2856
5864
11576
20872
35544
59256
96872


360
984
2920
5928
11704
21128
35928
59896
97896


368
1000
2984
5992
11832
21384
36312
60536
98576


376
1032
3048
6056
11960
21640
36696
61176
99664


384
1064
3112
6120
12088
21896
36992
61664
100752









where, the N value is a natural number.
According to the above-mentioned embodiments of the present invention, if a transport block received from an upper layer is segmented into a plurality of code blocks, and the code blocks are encoded by a turbo-encoder, the present invention is able to avoid addition of dummy bits due to the length of an input bit of an internal interleaver of the turbo-encoder, such that it can effectively transmit signals.



DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiments of the invention and together with the description serve to explain the principle of the invention.
In the drawings:
FIG. 1 is a conceptual diagram illustrating basic operations of a turbo-encoder according to the present invention;
FIGS. 2A, 2B and 3 are conceptual diagrams illustrating a method for dividing a long transport block into a plurality of short transport blocks in a 3GPP system, and attaching a CRC to the short transport blocks according to the present invention;
FIG. 4 is a conceptual diagram illustrating a principle of establishing the transport block size according to one embodiment of the present invention; and
FIG. 5 shows an example of a resource structure according to the present invention.
FIG. 6 shows a flow chart according to the present invention.



DETAILED DESCRIPTION OF THE INVENTION
Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Prior to describing the present invention, it should be noted that most terms disclosed in the present invention correspond to general terms well known in the art, but some terms have been selected by the applicant as necessary and will hereinafter be disclosed in the following description of the present invention. Therefore, it is preferable that the terms defined by the applicant be understood on the basis of their meanings in the present invention.
For the convenience of description and better understanding of the present invention, the following detailed description will disclose a variety of embodiments and modifications of the present invention. In some cases, in order to prevent ambiguous concepts of the present invention from occurring, conventional devices or apparatus well known to those skilled in the art will be omitted and be denoted in the form of a block diagram on the basis of the important functions of the present invention. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
As described above, it is well known to those skilled in the art that the internal interleaver of the turbo code has a superior performance in only a specific-sized data block. If the data block size is larger than a predetermined size, a transport block or a data block is segmented into a plurality of code blocks, and this process is called segmentation. Due to the limitation of the interleaver size, the transport or data block may not be segmented into the same-sized code blocks.
However, in the case of a downlink, a channel quality indicator must be applied to all code blocks segmented from the data block, such that it is preferable that the transport or data block be segmented into the same-sized code blocks. If the data block size or the segmented code block size is different from the internal interleaver size of the turbo code, a dummy bit is inserted such that transmission efficiency is reduced. In order to solve this problem, it is preferable that the segmentation process be performed not to require this dummy bit.
For the above-mentioned operations, there is needed a consideration of the block size of the internal encoder of the turbo-encoder caused by the inserted dummy bit. In order to perform the channel coding, a CRC is attached to a transport block or code blocks segmented from the transport block, and at the same time the length of each data block is changed to another length, such that a consideration of the channel coding is needed.
Firstly, the above-mentioned CRC attachment process will hereinafter be described in detail.
The CRC for detecting errors is attached to the transport block received from an upper layer. For the convenience of implementation, and it can also be attached to each of the segmented code blocks.
FIGS. 2A, 2B are conceptual diagrams illustrating a method for dividing a long transport block into a plurality of short length code blocks in a 3GPP system, and attaching a CRC to the short code blocks according to the present invention.
The 3GPP system segments a long transport block (TB) into a plurality of short code blocks, encodes the short code blocks, collects the encoded short code blocks, and transmits the collected short code blocks. Detailed descriptions of the above operations of the 3GPP system will hereinafter be described with reference to FIGS. 2A, 2B and 3.
Referring to FIGS. 2A, 2B and 3, the long transport block is CRC-attached, that is, a CRC is attached to the transport block at step S101. Thereafter, the CRC-attached long transport block is segmented into a plurality of short code blocks at step S102. Similar to this, as shown in reference numbers S201 ̃S203 of FIGS. 2B and 3, the CRC is attached to the long transport block, and the CRC-attached transport block is segmented into a plurality of code blocks. However, if the length of the transport block received from the upper layer is equal to or shorter than a predetermined length capable of being constructed by one code block, i.e., a maximum length of the internal interleaver of the turbo-encoder, the segmentation of the transport block may be omitted. In this case, the process for attaching a CB CRC may also be omitted.
In the meantime, each of short code blocks is CRC-attached, that is, the CRC attachment process is then performed on each of the code blocks at step S103. In more detail, as shown in the reference number of S204 of FIGS. 2B and 3, each of the code blocks includes a CRC.
Also, the code blocks, each of which includes the CRC, are applied to a channel encoder, such that the channel coding process is performed on the resultant code blocks at step S104. Thereafter, the rate matching process S105, and the code block concatenation and channel interleaving process S106 are sequentially applied to the individual code blocks, such that the resultant code blocks are transmitted to a reception end.
Therefore, according to the following embodiment, there is proposed a process for determining the size of a transport block in consideration of the two-stage CRC attachment process. In the case where the size of a transport block is less than a predetermined size (such as, maximum internal interleaver size) and this transport block is mapped to one code block, the embodiment of the present invention provides a method for establishing the transport block size in consideration of only one CRC.
Under the above-mentioned assumption, a method for mapping the transport block to one code block will hereinafter be described. In order to remove the necessity of the conventional art of attaching the dummy bit on the condition that the transport block is mapped to one codeword, this embodiment of the present invention allows the sum of the transport block size (N) and one CRC length to be equal to an block size of the internal interleaver of the turbo-interleaver. The following Table 1 represents a combination of block sizes of the internal interleaver of the turbo-encoder.










TABLE 1







i
K



















1
40



2
48



3
56



4
64



5
72



6
80



7
88



8
96



9
104



10
112



11
120



12
128



13
136



14
144



15
152



16
160



17
168



18
176



19
184



20
192



21
200



22
208



23
216



24
224



25
232



26
240



27
248



28
256



29
264



30
272



31
280



32
288



33
296



34
304



35
312



36
320



37
328



38
336



39
344



40
352



41
360



42
368



43
376



44
384



45
392



46
400



47
408



48
416



49
424



50
432



51
440



52
448



53
456



54
464



55
472



56
480



57
488



58
496



59
504



60
512



61
528



62
544



63
560



64
576



65
592



66
608



67
624



68
640



69
656



70
672



71
688



72
704



73
720



74
736



75
752



76
768



77
784



78
800



79
816



80
832



81
848



82
864



83
880



84
896



85
912



86
928



87
944



88
960



89
976



90
992



91
1008



92
1024



93
1056



94
1088



95
1120



96
1152



97
1184



98
1216



99
1248



100
1280



101
1312



102
1344



103
1376



104
1408



105
1440



106
1472



107
1504



108
1536



109
1568



110
1600



111
1632



112
1664



113
1696



114
1728



115
1760



116
1792



117
1824



118
1856



119
1888



120
1920



121
1952



122
1984



123
2016



124
2048



125
2112



126
2176



127
2240



128
2304



129
2368



130
2432



131
2496



132
2560



133
2624



134
2688



135
2752



136
2816



137
2880



138
2944



139
3008



140
3072



141
3136



142
3200



143
3264



144
3328



145
3392



146
3456



147
3520



148
3584



149
3648



150
3712



151
3776



152
3840



153
3904



154
3968



155
4032



156
4096



157
4160



158
4224



159
4288



160
4352



161
4416



162
4480



163
4544



164
4608



165
4672



166
4736



167
4800



168
4864



169
4928



170
4992



171
5056



172
5120



173
5184



174
5248



175
5312



176
5376



177
5440



178
5504



179
5568



180
5632



181
5696



182
5760



183
5824



184
5888



185
5952



186
6016



187
6080



188
6144










Therefore, as shown in Table 1, if the transport block is mapped to one code block, it is preferable that the transport block has a specific length acquired when the length of a CRC attached to the transport block is subtracted from an block size (K) of the internal interleaver. Provided that the length of a CRC attached to the transport block is 24 bits, the transport block size (N) acquired when the transport block is mapped to one code block may be a K-24. That is, the transport block size according to this embodiment may be selected from combinations of the following Table 4.










TABLE 4







i
N



















1
16



2
24



3
32



4
40



5
48



6
56



7
64



8
72



9
80



10
88



11
96



12
104



13
112



14
120



15
128



16
136



17
144



18
152



19
160



20
168



21
176



22
184



23
192



24
200



25
208



26
216



27
224



28
232



29
240



30
248



31
256



32
264



33
272



34
280



35
288



36
296



37
304



38
312



39
320



40
328



41
336



42
344



43
352



44
360



45
368



46
376



47
384



48
392



49
400



50
408



51
416



52
424



53
432



54
440



55
448



56
456



57
464



58
472



59
480



60
488



61
504



62
520



63
536



64
552



65
568



66
584



67
600



68
616



69
632



70
648



71
664



72
680



73
696



74
712



75
728



76
744



77
760



78
776



79
792



80
808



81
824



82
840



83
856



84
872



85
888



86
904



87
920



88
936



89
952



90
968



91
984



92
1000



93
1032



94
1064



95
1096



96
1128



97
1160



98
1192



99
1224



100
1256



101
1288



102
1320



103
1352



104
1384



105
1416



106
1448



107
1480



108
1512



109
1544



110
1576



111
1608



112
1640



113
1672



114
1704



115
1736



116
1768



117
1800



118
1832



119
1864



120
1896



121
1928



122
1960



123
1992



124
2024



125
2088



126
2152



127
2216



128
2280



129
2344



130
2408



131
2472



132
2536



133
2600



134
2664



135
2728



136
2792



137
2856



138
2920



139
2984



140
3048



141
3112



142
3176



143
3240



144
3304



145
3368



146
3432



147
3496



148
3560



149
3624



150
3688



151
3752



152
3816



153
3880



154
3944



155
4008



156
4072



157
4136



158
4200



159
4264



160
4328



161
4392



162
4456



163
4520



164
4584



165
4648



166
4712



167
4776



168
4840



169
4904



170
4968



171
5032



172
5096



173
5160



174
5224



175
5288



176
5352



177
5416



178
5480



179
5544



180
5608



181
5672



182
5736



183
5800



184
5864



185
5928



186
5992



187
6056



188
6120










In the meantime, a method for segmenting one transport block into two or more code blocks and performing a mapping process on the segmented code blocks will hereinafter be described in detail.
If one transport block is segmented into two or more code blocks, a CRC for the transport block is attached to the transport block as shown in FIGS. 2 and 3, and a CRC for each code block is attached to each of the segmented code blocks. Under this assumption, in order to avoid the conventional practice of adding of dummy bits, it is preferable that the sum of the size of a any one segmented code block and the size of a CRC attached to a corresponding code block is equal to an input bit size of the internal interleaver, as shown in Table 1.
Also, this embodiment of the present invention allows each of the segmented codewords to have the same size. Different-sized code blocks created by the segmentation of the transport block are caused by the limitation of the size of the internal interleaver of the turbo-encoder. If the transport block size is pre-established in consideration of the size of the internal interleaver of the turbo-encoder as described in this embodiment, there is no need for the individual code blocks to have different sizes.
Under the above-mentioned assumption, a method for establishing the size of the transport block according to this embodiment will hereinafter be described in detail.
FIG. 4 is a conceptual diagram illustrating a principle of establishing the transport block size according to one embodiment of the present invention.
Firstly, it is assumed that an L-sized CRC is attached to an N-sized transport block (TB). If the CRC-attached transport block (TB) size is longer than the maximum length of the internal interleaver, the transport block is segmented into a plurality of code blocks (CBs). As can be seen from FIG. 4, the transport block (TB) size is segmented into M (CB1 ̃CBM), each of which has the same length of NC bits.
In the meantime, the L-sized CRC is attached to each of the M code blocks.
In this way, provided that each of the segmented code blocks has the same length and the lengths of two attached CRCs are considered, the transport block size N can be represented by the following equation 1:

N+L*M+L=M*(Nc+L)=>N=M*Nc−L  [Equation 1]

If the CRC of 24 bits is used, the above Equation 1 may be represented by another equation of N=M*Nc−24.
Each of the segmented code blocks includes the CRC, such that the CRC-attached code blocks are applied to the internal interleaver of the turbo-encoder. Therefore, as shown in FIG. 4, the length of the CRC-attached code blocks is equal to the internal interleaver's block size (K) shown in Table 1, as represented by the following equation 2:

Nc+L=K  [Equation 2]

Based on the above-mentioned description, this embodiment provides a method for using the following transport block sizes shown in the following Table 2. The following Table 2 shows a variety of cases illustrating a relationship between a single transport block and a maximum of 25 code blocks mapped to this single transport block.










TABLE 2







M
N



















2
6200



2
6328



2
6456



2
6584



2
6712



2
6840



2
6968



2
7096



2
7224



2
7352



2
7480



2
7608



2
7736



2
7864



2
7992



2
8120



2
8248



2
8376



2
8504



2
8632



2
8760



2
8888



2
9016



2
9144



2
9272



2
9400



2
9528



2
9656



2
9784



2
9912



2
10040



2
10168



2
10296



2
10424



2
10552



2
10680



2
10808



2
10936



2
11064



2
11192



2
11320



2
11448



2
11576



2
11704



2
11832



2
11960



2
12088



2
12216



3
12384



3
12576



3
12768



3
12960



3
13152



3
13344



3
13536



3
13728



3
13920



3
14112



3
14304



3
14496



3
14688



3
14880



3
15072



3
15264



3
15456



3
15648



3
15840



3
16032



3
16224



3
16416



3
16608



3
16800



3
16992



3
17184



3
17376



3
17568



3
17760



3
17952



3
18144



3
18336



4
18568



4
18824



4
19080



4
19336



4
19592



4
19848



4
20104



4
20360



4
20616



4
20872



4
21128



4
21384



4
21640



4
21896



4
22152



4
22408



4
22664



4
22920



4
23176



4
23432



4
23688



4
23944



4
24200



4
24456



5
24496



5
24816



5
25136



5
25456



5
25776



5
26096



5
26416



5
26736



5
27056



5
27376



5
27696



5
28016



5
28336



5
28656



5
28976



5
29296



5
29616



5
29936



5
30256



5
30576



6
30936



6
31320



6
31704



6
32088



6
32472



6
32856



6
33240



6
33624



6
34008



6
34392



6
34776



6
35160



6
35544



6
35928



6
36312



6
36696



7
36992



7
37440



7
37888



7
38336



7
38784



7
39232



7
39680



7
40128



7
40576



7
41024



7
41472



7
41920



7
42368



7
42816



8
43304



8
43816



8
44328



8
44840



8
45352



8
45864



8
46376



8
46888



8
47400



8
47912



8
48424



8
48936



8
49296



9
49872



9
50448



9
51024



9
51600



9
52176



9
52752



9
53328



9
53904



9
54480



9
55056



10
55416



10
56056



10
56696



10
57336



10
57976



10
58616



10
59256



10
59896



10
60536



10
61176



11
61664



11
62368



11
63072



11
63776



11
64480



11
65184



11
65888



11
66592



11
67296



12
68040



12
68808



12
69576



12
70344



12
71112



12
71880



12
72648



12
73416



13
73712



13
74544



13
75376



13
76208



13
77040



13
77872



13
78704



13
79536



14
80280



14
81176



14
82072



14
82968



14
83864



14
84760



14
85656



15
86016



15
86976



15
87936



15
88896



15
89856



15
90816



15
91776



16
92776



16
93800



16
94824



16
95848



16
96872



16
97896



17
98576



17
99664



17
100752



17
101840



17
102928



17
104016



18
104376



18
105528



18
106680



18
107832



18
108984



18
110136



19
110176



19
111392



19
112608



19
113824



19
115040



19
116256



20
117256



20
118536



20
119816



20
121096



20
122376



21
123120



21
124464



21
125808



21
127152



21
128496



22
130392



22
131800



22
133208



22
134616



23
134848



23
136320



23
137792



23
139264



23
140736



24
142248



24
143784



24
145320



24
146856



25
148176



25
149776



25
151376



25
152976










The Table 2 satisfies the above equations 1 and 2, and shows that up to the case when one transport block is segmented into 25 code blocks. Within the scope of satisfying the equations 1 and 2, those skilled in the art can easily appreciate an additional transport block (TB) size on the analogy of values shown in Table 2.
Since signal transmission is conducted by the above-mentioned embodiment of the present invention, the addition of dummy bit due to the limitation of the block size of the turbo-encoder can be removed, such that a system performance or throughput can be increased.
Meanwhile, in the case of considering not only a first case in which a transport block is mapped to one code block, but also a second case in which a transport block is segmented into two or more code blocks, the size of an available transport block can be represented by the following Table 3.
















TABLE 3







16
392
1096
3176
6200
12216
22152
37440
62368
101840


24
400
1128
3240
6328
12384
22408
37888
63072
102928


32
408
1160
3304
6456
12576
22664
38336
63776
104016


40
416
1192
3368
6584
12768
22920
38784
64480
104376


48
424
1224
3432
6712
12960
23176
39232
65184
105528


56
432
1256
3496
6840
13152
23432
39680
65888
106680


64
440
1288
3560
6968
13344
23688
40128
66592
107832


72
448
1320
3624
7096
13536
23944
40576
67296
108984


80
456
1352
3688
7224
13728
24200
41024
68040
110136


88
464
1384
3752
7352
13920
24456
41472
68808
110176


96
472
1416
3816
7480
14112
24496
41920
69576
111392


104
480
1448
3880
7608
14304
24816
42368
70344
112608


112
488
1480
3944
7736
14496
25136
42816
71112
113824


120
504
1512
4008
7864
14688
25456
43304
71880
115040


128
520
1544
4072
7992
14880
25776
43816
72648
116256


136
536
1576
4136
8120
15072
26096
44328
73416
117256


144
552
1608
4200
8248
15264
26416
44840
73712
118536


152
568
1640
4264
8376
15456
26736
45352
74544
119816


160
584
1672
4328
8504
15648
27056
45864
75376
121096


168
600
1704
4392
8632
15840
27376
46376
76208
122376


176
616
1736
4456
8760
16032
27696
46888
77040
123120


184
632
1768
4520
8888
16224
28016
47400
77872
124464


192
648
1800
4584
9016
16416
28336
47912
78704
125808


200
664
1832
4648
9144
16608
28656
48424
79536
127152


208
680
1864
4712
9272
16800
28976
48936
80280
128496


216
696
1896
4776
9400
16992
29296
49296
81176
130392


224
712
1928
4840
9528
17184
29616
49872
82072
131800


232
728
1960
4904
9656
17376
29936
50448
82968
133208


240
744
1992
4968
9784
17568
30256
51024
83864
134616


248
760
2024
5032
9912
17760
30576
51600
84760
134848


256
776
2088
5096
10040
17952
30936
52176
85656
136320


264
792
2152
5160
10168
18144
31320
52752
86016
137792


272
808
2216
5224
10296
18336
31704
53328
86976
139264


280
824
2280
5288
10424
18568
32088
53904
87936
140736


288
840
2344
5352
10552
18824
32472
54480
88896
142248


296
856
2408
5416
10680
19080
32856
55056
89856
143784


304
872
2472
5480
10808
19336
33240
55416
90816
145320


312
888
2536
5544
10936
19592
33624
56056
91776
146856


320
904
2600
5608
11064
19848
34008
56696
92776
148176


328
920
2664
5672
11192
20104
34392
57336
93800
149776


336
936
2728
5736
11320
20360
34776
57976
94824
151376


344
952
2792
5800
11448
20616
35160
58616
95848
152976


352
968
2856
5864
11576
20872
35544
59256
96872


360
984
2920
5928
11704
21128
35928
59896
97896


368
1000
2984
5992
11832
21384
36312
60536
98576


376
1032
3048
6056
11960
21640
36696
61176
99664


384
1064
3112
6120
12088
21896
36992
61664
100752









When implementing the above described methodology, when a terminal identifies that the length of the CRC-attached transport block is larger than the largest interleaver block size, the terminal may determine the predetermined number of code blocks from a look-up table (as seen in step S601 of FIG. 6) or may calculate the predetermined number of code blocks based upon a formula. The calculation may include calculating the predetermined number of code blocks based on the following equation:

C=┌B/(Z−L)┐,where

┌ ┐ represents a ceiling function,
C is the predetermined number of code blocks,
B is the length of the CRC-attached transport block,
Z is the largest interleaver block size, and
L is the first CRC length.
A signal transmission method and device according to this embodiment enables the transport block to have a predetermined length corresponding to any one of various values shown in Table 3. Table 3 shows the available transport block (TB) sizes which obviates the need for the conventional practice of inserting the dummy bit into the signal. The signal transmission method may allow sub-sets of Table 3 to be shared between a transmission end and a reception end in consideration of signaling overhead and the like, instead of using all the values of Table 36.
In the meantime, in order to inform the reception end of the transport block size, the transmission end is able to represent the transport block size by a combination of a modulation and coding scheme (MCS), and the size of allocated resources (as seen in step S603 of FIG. 6). By means of a channel quality indicator transferred from the reception end, a scheduler decides the MCS. The size of allocated resources is decided in consideration of not only resources for transferring control information but also other resources for a reference signal for channel estimation. As noted above, the code block is mapped to a transport block with the transport block size (S605).
FIG. 5 shows an example of a resource structure according to the present invention.
Referring to FIG. 5, a horizontal axis indicates a time domain, and a vertical axis indicates a frequency domain. On the assumption that the resource structure of FIG. 5 is used, it is assumed that the resources for transferring control information correspond to 3 symbols and two transmission (Tx) antennas are used, one resource block (RB) includes 120 resource elements (REs) capable of being used to transmit data.
In this case, if it is assumed that the modulation rate is 64QAM, the coding rate is 0.6504, and the number of allocated resource blocks (RBs) is 10, the size of a data block capable of being transmitted is 4658 bits. These 4658 bits are located between 4608 bits and 4672 bits of Table 1. If it is assumed that the size of the transmittable data block is set to the 4608 bits or the 4672 bits, the data block size can be decided by various modulation and coding rates and the size of allocated resources.
As previously described in the above-mentioned example, if the size of an actually-transmittable data block is different from the size of a supportable data block, the size of the actually-transmittable data block can be decided by any of the following rules i) ̃iii):
A method for deciding the actually-transmittable data block size as a maximally-supportable data block size which is equal to or smaller than the actually-transmittable data block size;
A method for deciding the actually-transmittable data block size as a minimally-supportable data block size larger than the actually-transmittable data block size; and
A method for deciding the actually-transmittable data block size as a supportable data block size which has a minimum difference with the actually-transmittable data block size.
In this case, if one transport block is transferred via one code block, the data block may correspond to the transport block. Otherwise, if one transport block is transferred via two or more code blocks, the data block may be considered to be the code blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. For example, although the signal transmission method according to the present invention has been disclosed on the basis of the 3GPP LTE system, it can also be applied to other communication systems, each of which has a limitation in the block size during the encoding process and uses a combination of predetermined transport block sizes.
If a transport block received from an upper layer is segmented into a plurality of code blocks, and the code blocks are encoded by a turbo-encoder, the signal transmission method according to the present invention is able to remove the added dummy bits caused by a limitation of the block size of the internal interleaver of the turbo-encoder, such that it can effectively transmit signals.

## Claims

1. A method of receiving, by a first device, data from a second device, the method comprising:
receiving, from the second device, modulation and coding related information and resource related information for a transport block; and
receiving, from the second device, one or a plurality of code blocks to which the transport block is mapped,
wherein the modulation and coding related information and the resource related information represent a size of the transport block,
wherein the resource related information employs a number of resource blocks,
wherein the size of the transport block is one of a plurality of predetermined transport block sizes which comprise a first set of transport block sizes predetermined to satisfy that each transport block size of the first set of transport block sizes plus a size of a first cyclic redundancy check (CRC) is equal to one of predetermined internal interleaver block sizes of a turbo-encoder of the second device and a second set of transport block sizes predetermined to satisfy that each size of the plurality of code blocks, to which the transport block with any one of the second set of transport block sizes is mapped, plus a size of a second CRC is equal to one of the predetermined internal interleaver block sizes of the turbo-encoder,
wherein the first set of transport block sizes includes 16, 24, 32, 40, 56, 72, 88, 104, 120, 136, 144, 152, 176, 208, 224, 256, 280, 288, 296, 328, 336, 344, 376, 392, 408, 424, 440, 456, 472, 488, 504, 520, 536, 552, 568, 584, 600, 616, 632, 648, 680, 696, 712, 744, 776, 808, 840, 872, 904, 936, 968, 1000, 1032, 1064, 1096, 1128, 1160, 1192, 1224, 1256, 1288, 1320, 1352, 1384, 1416, 1480, 1544, 1608, 1672, 1736, 1800, 1864, 1928, 1992, 2024, 2088, 2152, 2216, 2280, 2344, 2408, 2472, 2536, 2600, 2664, 2728, 2792, 2856, 2984, 3112, 3240, 3368, 3496, 3624, 3752, 3880, 4008, 4136, 4264, 4392, 4584, 4776, 4968, 5160, 5352, 5544, 5736, 5992, and
wherein the second set of transport block sizes includes 6200, 6456, 6712, 6968, 7224, 7480, 7736, 7992, 8248, 8504, 8760, 9144, 9528, 9912, 10296, 10680, 11064, 11448, 11832, 12216, 12576, 12960, 13536, 14112, 14688, 15264, 15840, 16416, 16992, 17568, 18336, 19080, 19848, 20616, 21384, 22152, 22920, 23688, 24496, 25456, 26416, 27376, 28336, 29296, 30576, 31704, 32856, 34008, 35160, 36696, 37888, 39232, 40576, 42368, 43816, 45352, 46888, 51024, 52752, 57336, 59256, 61664, 63776, 66592, 68808, 71112, 75376.

2. The method of claim 1, wherein each of the resource blocks comprises a plurality of resource elements.

3. The method of claim 1, wherein the size of the transport block is one of the first set of transport block sizes when a number of code blocks to which the transport block is mapped is one.

4. The method of claim 1, wherein the size of the transport block is one of the second set of transport block sizes when a number of code blocks to which the transport block is mapped is more than one.

5. The method of claim 1,
wherein receiving the plurality of code blocks comprises receiving a plurality of second code blocks which are produced by attaching the second CRC to each of the plurality of code blocks produced by dividing a first CRC attached the transport block when a number of code blocks to which the transport block is mapped is more than one, and
wherein the first CRC attached transport block is produced by attaching the first CRC to the transport block.

6. A device for receiving data from an external device, the device configured to:
receive, from the external device, modulation and coding related information and resource related information for a transport block; and
receive, from the external device, one or a plurality of code blocks to which the transport block is mapped,
wherein the modulation and coding related information and the resource related information represent a size of the transport block,
wherein the resource related information employs a number of resource blocks,
wherein the size of the transport block is one of a plurality of predetermined transport block sizes which comprise a first set of transport block sizes predetermined to satisfy that each transport block size of the first set of transport block sizes plus a size of a first cyclic redundancy check (CRC) is equal to one of predetermined internal interleaver block sizes of a turbo-encoder of the second device and a second set of transport block sizes predetermined to satisfy that each size of the plurality of code blocks, to which the transport block with any one of the second set of transport block sizes is mapped, plus a size of a second CRC is equal to one of the predetermined internal interleaver block sizes of the turbo-encoder,
wherein the first set of transport block sizes includes 16, 24, 32, 40, 56, 72, 88, 104, 120, 136, 144, 152, 176, 208, 224, 256, 280, 288, 296, 328, 336, 344, 376, 392, 408, 424, 440, 456, 472, 488, 504, 520, 536, 552, 568, 584, 600, 616, 632, 648, 680, 696, 712, 744, 776, 808, 840, 872, 904, 936, 968, 1000, 1032, 1064, 1096, 1128, 1160, 1192, 1224, 1256, 1288, 1320, 1352, 1384, 1416, 1480, 1544, 1608, 1672, 1736, 1800, 1864, 1928, 1992, 2024, 2088, 2152, 2216, 2280, 2344, 2408, 2472, 2536, 2600, 2664, 2728, 2792, 2856, 2984, 3112, 3240, 3368, 3496, 3624, 3752, 3880, 4008, 4136, 4264, 4392, 4584, 4776, 4968, 5160, 5352, 5544, 5736, 5992, and
wherein the second set of transport block sizes includes 6200, 6456, 6712, 6968, 7224, 7480, 7736, 7992, 8248, 8504, 8760, 9144, 9528, 9912, 10296, 10680, 11064, 11448, 11832, 12216, 12576, 12960, 13536, 14112, 14688, 15264, 15840, 16416, 16992, 17568, 18336, 19080, 19848, 20616, 21384, 22152, 22920, 23688, 24496, 25456, 26416, 27376, 28336, 29296, 30576, 31704, 32856, 34008, 35160, 36696, 37888, 39232, 40576, 42368, 43816, 45352, 46888, 51024, 52752, 57336, 59256, 61664, 63776, 66592, 68808, 71112, 75376.

7. The device of claim 6, wherein each of the resource blocks comprises a plurality of resource elements.

8. The device of claim 6, wherein the size of the transport block is one of the first set of transport block sizes when a number of code blocks to which the transport block is mapped is one.

9. The device of claim 6, wherein the size of the transport block is one of the second set of transport block sizes when a number of code blocks to which the transport block is mapped is more than one.

10. The device of claim 6,
wherein receiving the plurality of code blocks comprises receiving a plurality of second code blocks which are produced by attaching the second CRC to each of the plurality of code blocks produced by dividing a first CRC attached the transport block when a number of code blocks to which the transport block is mapped is more than one, and
wherein the first CRC attached transport block is produced by attaching the first CRC to the transport block.

11. A method of transmitting, by a first device, data to a second device, the method comprising:
transmitting, to the second device, modulation and coding related information and resource related information for a transport block; and
transmitting, to the second device, one or a plurality of code blocks to which the transport block is mapped,
wherein the modulation and coding related information and the resource related information represent a size of the transport block,
wherein the resource related information employs a number of resource blocks,
wherein the size of the transport block is one of a plurality of predetermined transport block sizes which comprise a first set of transport block sizes predetermined to satisfy that each transport block size of the first set of transport block sizes plus a size of a first cyclic redundancy check (CRC) is equal to one of predetermined internal interleaver block sizes of a turbo-encoder of the second device and a second set of transport block sizes predetermined to satisfy that each size of the plurality of code blocks, to which the transport with any one of the second set of transport block sizes is mapped, plus a size of a second CRC is equal to one of the predetermined interval interleaver block sizes of the turbo-encoder,
wherein the first set of transport block sizes includes 16, 24, 32, 40, 56, 72, 88, 104, 120, 136, 144, 152, 176, 208, 224, 256, 280, 288, 296, 328, 336, 344, 376, 392, 408, 424, 440, 456, 472, 488, 504, 520, 536, 552, 568, 584, 600, 616, 632, 648, 680, 696, 712, 744, 776, 808, 840, 872, 904, 936, 968, 1000, 1032, 1064, 1096, 1128, 1160, 1192, 1224, 1256, 1288, 1320, 1352, 1384, 1416, 1480, 1544, 1608, 1672, 1736, 1800, 1864, 1928, 1992, 2024, 2088, 2152, 2216, 2280, 2344, 2408, 2472, 2536, 2600, 2664, 2728, 2792, 2856, 2984, 3112, 3240, 3368, 3496, 3624, 3752, 3880, 4008, 4136, 4264, 4392, 4584, 4776, 4968, 5160, 5352, 5544, 5736, 5992, and
wherein the second set of transport block sizes includes 6200, 6456, 6712, 6968, 7224, 7480, 7736, 7992, 8248, 8504, 8760, 9144, 9528, 9912, 10296, 10680, 11064, 11448, 11832, 12216, 12576, 12960, 13536, 14112, 14688, 15264, 15840, 16416, 16992, 17568, 18336, 19080, 19848, 20616, 21384, 22152, 22920, 23688, 24496, 25456, 26416, 27376, 28336, 29296, 30576, 31704, 32856, 34008, 35160, 36696, 37888, 39232, 40576, 42368, 43816, 45352, 46888, 51024, 52752, 57336, 59256, 61664, 63776, 66592, 68808, 71112, 75376.

12. The method of claim 11, wherein each of the resource blocks comprises a plurality of resource elements.

13. The method of claim 11, wherein the size of the transport block is one of the first set of transport block sizes when a number of code blocks to which the transport block is mapped is one.

14. The method of claim 11, wherein the size of the transport block is one of the second set of transport block sizes when a number of code blocks to which the transport block is mapped is more than one.

15. The method of claim 11,
wherein receiving the plurality of code blocks comprises receiving a plurality of second code blocks which are produced by attaching the second CRC to each of the plurality of code blocks produced by dividing a first CRC attached transport block when a number of code blocks to which the transport block is mapped is more than one, and
wherein the first CRC attached transport block is produced by attaching the first CRC to the transport block.

16. A device for transmitting data to an external device, the device configured to:
transmit, to the external device, modulation and coding related information and resource related information for a transport block; and
transmit, to the external device, one or a plurality of code blocks to which the transport block is mapped,
wherein the modulation and coding related information and the resource related information represent a size of the transport block,
wherein the resource related information employs a number of resource blocks,
wherein the size of the transport block is one of a plurality of predetermined transport block sizes which comprise a first set of transport block sizes predetermined to satisfy that each transport block size of the first set of transport block sizes plus a size of a first cyclic redundancy check (CRC) is equal to one of predetermined internal interleaver block sizes of a turbo-encoder of the second device and a second set of transport block sizes predetermined to satisfy that each size of the plurality of code blocks, to which the transport block with any one of the second set of transport block sizes is mapped, plus a size of a second CRC is equal to one of the predetermined internal interleaver block sizes of the turbo-encoder,
wherein the first set of transport block sizes includes 16, 24, 32, 40, 56, 72, 88, 104, 120, 136, 144, 152, 176, 208, 224, 256, 280, 288, 296, 328, 336, 344, 376, 392, 408, 424, 440, 456, 472, 488, 504, 520, 536, 552, 568, 584, 600, 616, 632, 648, 680, 696, 712, 744, 776, 808, 840, 872, 904, 936, 968, 1000, 1032, 1064, 1096, 1128, 1160, 1192, 1224, 1256, 1288, 1320, 1352, 1384, 1416, 1480, 1544, 1608, 1672, 1736, 1800, 1864, 1928, 1992, 2024, 2088, 2152, 2216, 2280, 2344, 2408, 2472, 2536, 2600, 2664, 2728, 2792, 2856, 2984, 3112, 3240, 3368, 3496, 3624, 3752, 3880, 4008, 4136, 4264, 4392, 4584, 4776, 4968, 5160, 5352, 5544, 5736, 5992, and
wherein the second set of transport block sizes includes 6200, 6456, 6712, 6968, 7224, 7480, 7736, 7992, 8248, 8504, 8760, 9144, 9528, 9912, 10296, 10680, 11064, 11448, 11832, 12216, 12576, 12960, 13536, 14112, 14688, 15264, 15840, 16416, 16992, 17568, 18336, 19080, 19848, 20616, 21384, 22152, 22920, 23688, 24496, 25456, 26416, 27376, 28336, 29296, 30576, 31704, 32856, 34008, 35160, 36696, 37888, 39232, 40576, 42368, 43816, 45352, 46888, 51024, 52752, 57336, 59256, 61664, 63776, 66592, 68808, 71112, 75376.

17. The device of claim 16, wherein each of the resource blocks comprises a plurality of resource elements.

18. The device of claim 16, wherein the size of the transport block is one of the first set of transport block sizes when a number of code blocks to which the transport block is mapped is one.

19. The device of claim 16, wherein the size of the transport block is one of the second set of transport block sizes when a number of code blocks to which the transport block is mapped is more than one.

20. The device of claim 16,
wherein receiving the plurality of code blocks comprises receiving a plurality of second code blocks which are produced by attaching the second CRC code to each of the plurality of code blocks produced by dividing a first CRC attached transport block when a number of code blocks to which the transport block is mapped is more than one, and
wherein the first CRC attached transport block is produced by attaching the first CRC to the transport block.