3GPP TS 36.212：LTE演进的多路复用与信道编码技术规范

需积分: 31 155 浏览量更新于2024-07-21 收藏 876KB PDF 举报

"最新的3GPP协议，具体为3GPP TS 36.212版本12.4.0，发布于2015年4月，详细规定了LTE（长期演进）系统中的多路复用和信道编码技术。" 3GPP（第三代合作伙伴计划）是一个国际标准组织，负责制定移动通信系统的规范，包括GSM、UMTS、LTE以及5G等。3GPP TS 36.212是该组织发布的一份关键技术规格文档，主要关注LTE网络的无线接入部分，即E-UTRA（演进的通用陆地无线接入网络）。这份技术规范详细描述了以下几个核心知识点： 1. 多路复用：在无线通信中，多路复用技术允许在单一的传输通道上同时发送多个数据流，以提高频谱效率。3GPP TS 36.212涵盖了OFDM（正交频分复用）和SC-FDMA（单载波-频分多址）这两种多路复用方式。OFDM是LTE的主要复用技术，它将宽带信号分解成多个正交子载波，每个子载波可以独立传输数据。SC-FDMA则在频域内分配资源，以降低发射功率波动，更适合移动设备。 2. 信道编码：信道编码是为了提高数据传输的可靠性和抗干扰能力。此文档详细规定了LTE中的Turbo编码、卷积编码以及Polar编码等方法。Turbo编码是一种迭代编码，由两个或更多的交织编码器和一个解码器组成，具有接近香农限的性能。卷积编码是早期广泛使用的编码方式，而Polar编码是近年来被引入的新技术，尤其在5G中扮演重要角色，因为它能实现理论上的无错误传输。 3. 调制与解调：3GPP TS 36.212还涉及不同的调制方式，如QPSK（四相相移键控）、16QAM（16阶正交幅度调制）和64QAM（64阶正交幅度调制），这些调制方式决定了数据在无线信道上传输的效率和可靠性。 4. 资源块和调度：在LTE系统中，资源是以资源块的形式进行管理的，这些块包含一定数量的时隙和子载波。调度是决定哪些用户在何时何地获得这些资源的过程，3GPP TS 36.212描述了如何高效地分配这些资源以满足不同用户的需求。 5. HARQ（混合自动重传请求）：HARQ是一种错误检测和纠正机制，结合了前向纠错编码和反馈重传，提高了数据传输的可靠性。 6. MIMO（多输入多输出）：MIMO技术利用多个天线发送和接收信号，以提高数据传输速率和链路稳定性。3GPP TS 36.212阐述了在LTE中如何实施MIMO技术。这份技术规范对理解LTE网络的底层工作原理至关重要，是工程师、研究人员和开发者学习和设计无线通信系统的重要参考资料。由于其内容专业且深入，对于从事移动通信领域工作的专业人士来说，掌握其中的知识点对于优化网络性能、开发新的通信技术和设备都具有重要意义。

ETSI

ETSI TS 136 212 V12.4.0 (2015

04)

3GP

P TS 36.212 version 12.4.0 Release 12

where the relationship between the output index

and the input index

)(iΠ

satisfies the following quadratic form:

(

)

Kififi

mod)(

⋅+⋅=Π

The parameters

and

depend on the block size

and are summarized in Table 5.1.3-3.

Table 5.1.3-3: Turbo code internal interleaver parameters.

i K

1 40 3 10 48 416 25 52 95 1120 67 140 142 3200 111 240

2 48 7 12 49 424 51 106 96 1152 35 72 143 3264 443 204

3 56 19 42 50 432 47 72 97 1184 19 74 144 3328 51 104

4 64 7 16 51 440 91 110 98 1216 39 76 145 3392 51 212

5 72 7 18 52 448 29 168 99 1248 19 78 146 3456 451 192

6 80 11 20 53 456 29 114 100 1280 199 240 147 3520 257 220

7 88 5 22 54 464 247 58 101 1312 21 82 148 3584 57 336

8 96 11 24 55 472 29 118 102 1344 211 252 149 3648 313 228

9 104 7 26 56 480 89 180 103 1376 21 86 150 3712 271 232

10 112 41 84 57 488 91 122 104 1408 43 88 151 3776 179 236

11 120 103 90 58 496 157 62 105 1440 149 60 152 3840 331 120

12 128 15 32 59 504 55 84 106 1472 45 92 153 3904 363 244

13 136 9 34 60 512 31 64 107 1504 49 846 154 3968 375 248

14 144 17 108 61 528 17 66 108 1536 71 48 155 4032 127 168

15 152 9 38 62 544 35 68 109 1568 13 28 156 4096 31 64

16 160 21 120 63 560 227 420 110 1600 17 80 157 4160 33 130

17 168 101 84 64 576 65 96 111 1632 25 102 158 4224 43 264

18 176 21 44 65 592 19 74 112 1664 183 104 159 4288 33 134

19 184 57 46 66 608 37 76 113 1696 55 954 160 4352 477 408

20 192 23 48 67 624 41 234 114 1728 127 96 161 4416 35 138

21 200 13 50 68 640 39 80 115 1760 27 110 162 4480 233 280

22 208 27 52 69 656 185 82 116 1792 29 112 163 4544 357 142

23 216 11 36 70 672 43 252 117 1824 29 114 164 4608 337 480

24 224 27 56 71 688 21 86 118 1856 57 116 165 4672 37 146

25 232 85 58 72 704 155 44 119 1888 45 354 166 4736 71 444

26 240 29 60 73 720 79 120 120 1920 31 120 167 4800 71 120

27 248 33 62 74 736 139 92 121 1952 59 610 168 4864 37 152

28 256 15 32 75 752 23 94 122 1984 185 124 169 4928 39 462

29 264 17 198 76 768 217 48 123 2016 113 420 170 4992 127 234

30 272 33 68 77 784 25 98 124 2048 31 64 171 5056 39 158

31 280 103 210 78 800 17 80 125 2112 17 66 172 5120 39 80

32 288 19 36 79 816 127 102 126 2176 171 136 173 5184 31 96

33 296 19 74 80 832 25 52 127 2240 209 420 174 5248 113 902

34 304 37 76 81 848 239 106 128 2304 253 216 175 5312 41 166

35 312 19 78 82 864 17 48 129 2368 367 444 176 5376 251 336

36 320 21 120 83 880 137 110 130 2432 265 456 177 5440 43 170

37 328 21 82 84 896 215 112 131 2496 181 468 178 5504 21 86

38 336 115 84 85 912 29 114 132 2560 39 80 179 5568 43 174

39 344 193 86 86 928 15 58 133 2624 27 164 180 5632 45 176

40 352 21 44 87 944 147 118 134 2688 127 504 181 5696 45 178

41 360 133 90 88 960 29 60 135 2752 143 172 182 5760 161 120

42 368 81 46 89 976 59 122 136 2816 43 88 183 5824 89 182

43 376 45 94 90 992 65 124 137 2880 29 300 184 5888 323 184

44 384 23 48 91 1008 55 84 138 2944 45 92 185 5952 47 186

45 392 243 98 92 1024 31 64 139 3008 157 188 186 6016 23 94

46 400 151 40 93 1056 17 66 140 3072 47 96 187 6080 47 190

47 408 155 102 94 1088 171 204 141 3136 13 28 188 6144 263 480

ETSI

ETSI TS 136 212 V12.4.0 (2015

04)

3GPP TS 36.212 version 12.4.0 Release 12

5.1.4 Rate matching

5.1.4.1 Rate matching for turbo coded transport channels

The rate matching for turbo coded transport channels is defined per coded block and consists of interleaving the three

information bit streams

)0(

)1(

and

)2(

, followed by the collection of bits and the generation of a circular buffer as

depicted in Figure 5.1.4-1. The output bits for each code block are transmitted as described in section 5.1.4.1.2.

Sub-block

interleaver

Sub-block

interleaver

Sub-block

interleaver

Bit

collection

virtual circular

buffer

Bit selection

and pruning

)0(

)1(

)2(

)0(

)1(

)2(

Figure 5.1.4-1. Rate matching for turbo coded transport channels.

The bit stream

)0(

is interleaved according to the sub-block interleaver defined in section 5.1.4.1.1 with an output

sequence defined as

)0(

,...,,,

−

vvvv

and where

is defined in section 5.1.4.1.1.

The bit stream

)1(

is interleaved according to the sub-block interleaver defined in section 5.1.4.1.1 with an output

sequence defined as

)1(

,...,,,

−

vvvv

The bit stream

)2(

is interleaved according to the sub-block interleaver defined in section 5.1.4.1.1 with an output

sequence defined as

)2(

,...,,,

−

vvvv

The sequence of bits

for transmission is generated according to section 5.1.4.1.2.

5.1.4.1.1 Sub-block interleaver

The bits input to the block interleaver are denoted by

)(

,...,,,

iii

dddd

−

, where

is the number of bits. The output

bit sequence from the block interleaver is derived as follows:

(1) Assign

subblock

to be the number of columns of the matrix. The columns of the matrix are numbered 0, 1,

2,…,

−

subblock

from left to right.

(2) Determine the number of rows of the matrix

subblock

, by finding minimum integer

subblock

such that:

(

)

subblock

CRD

×≤

The rows of rectangular matrix are numbered 0, 1, 2,…,

−

subblock

from top to bottom.

ETSI

ETSI TS 136 212 V12.4.0 (2015

04)

3GPP TS 36.212 version 12.4.0 Release 12

(3) If

(

)

DCR

subblock

>×

, then

(

)

DCRN

subblock

subblockD

−×=

dummy bits are padded such that

= <

NULL

for

= 0, 1,…,

- 1. Then,

)(

= 0, 1,…,

-1, and the bit sequence

is written into the

(

)

subblock

matrix row by row starting with bit

in column 0 of row 0:

⎥

⎦

⎤

⎢

⎣

⎡

−×+×−+×−×−

−++

−

)1(2)1(1)1()1(

1221

210

subblock

CRCRCRCR

CCCC

yyyy

MOMMM

For

)0(

and

)1(

(4) Perform the inter-column permutation for the matrix based on the pattern

()

{}

1,...,1,0 −∈

subblock

that is shown in

table 5.1.4-1, where P(

) is the original column position of the

-th permuted column. After permutation of the

columns, the inter-column permuted

(

)

subblock

matrix is equal to

⎥

⎦

⎤

⎢

⎣

⎡

×−+−×−+×−+×−+

+−+++

−

subblock

CRCPCRPCRPCRP

CCPCPCPCP

PPP

yyyy

)1()1()1()2()1()1()1()0(

)1()2()1()0(

)1(

)2()1()0(

MOMMM

(5) The output of the block interleaver is the bit sequence read out column by column from the inter-column

permuted

(

)

subblock

matrix. The bits after sub-block interleaving are denoted by

)(

,...,,,

iii

vvvv

−

, where

)(

corresponds to

)0(P

)(

subblock

+)0(

… and

(

)

subblock

CRK

×=

For

)2(

(4) The output of the sub-block interleaver is denoted by

)2(

,...,,,

−

vvvv

, where

)(

)2(

and where

()

⎟

⎠

⎞

⎜

⎝

⎛

+×+

⎟

⎠

⎞

⎜

⎝

⎛

⎥

⎦

⎥

⎢

⎣

⎢

KRkC

subblock

mod1mod)(

The permutation function

is defined in Table 5.1.4-1.

Table 5.1.4-1 Inter-column permutation pattern for sub-block interleaver.

Number of columns

subblock

Inter

column permutation pattern

>−<

)1(),...,1(),0(

subblock

CPPP

< 0, 16, 8, 24, 4, 20, 12, 28, 2, 18, 10, 26, 6, 22, 14, 30,

1, 17, 9, 25, 5, 21, 13, 29, 3, 19, 11, 27, 7, 23, 15, 31 >

5.1.4.1.2 Bit collection, selection and transmission

The circular buffer of length

= KK

for the

-th coded block is generated as follows:

)0(

for

= 0,…,

1−

)1(

vw =

for

= 0,…,

1−

ETSI

ETSI TS 136 212 V12.4.0 (2015

04)

3GPP TS 36.212 version 12.4.0 Release 12

)2(

vw =

for

= 0,…,

1−

Denote the soft buffer size for the transport block by

bits and the soft buffer size for the

-th code block by

bits.

The size

is obtained as follows, where

is the number of code blocks computed in section 5.1.2:

⎟

⎠

⎞

⎜

⎝

⎛

⎥

⎦

⎥

⎢

⎣

⎢

,min

for DL-SCH and PCH transport channels

wcb

KN =

for UL-SCH, MCH, SL-SCH and SL-DCH transport channels

For UE category 0, for DL-SCH associated with SI-RNTI and RA-RNTI and PCH transport channel,

is always

equal to

where

is equal to:

()

⎥

⎦

⎥

⎢

⎣

⎢

⋅⋅

limitDL_HARQMIMO

,min MMKK

soft

where:

If the UE signals

ue-Category-v12xx

indicating UE category 0, or if the UE signals

ue-Category-v12xx

not indicating

UE category 0 and is configured by higher layers with

altCQI-Table-r12

for the DL cell,

soft

is the total number of soft

channel bits according to the UE category indicated by

ue-Category-v12xx

. Otherwise, if the UE signals

ue-Category-

v11xx,

and is configured by higher layers with

altCQI-Table-r12

for the DL cell,

soft

is the total number of soft channel

bits according to the UE category indicated by

ue-Category-v11xx.

Otherwise, if the UE signals

ue-Category-v1020

and is configured with transmission mode 9 or transmission mode 10 for the DL cell,

soft

is the total number of soft

channel bits [4] according to the UE category indicated by

ue-Category-v1020

[6]. Otherwise,

soft

is the total number

of soft channel bits [4] according to the UE category indicated by

ue-Category

(without suffix) [6].

soft

= 35982720 or 47431680,

= 5,

elseif

soft

= 7308288 and the UE is configured by higher layers with

altCQI-Table-r12

if the UE is capable of supporting no more than a maximum of two spatial layers for the DL cell in the transmission

mode configured for the UE,

= 3

else

= 3/2

end if.

elseif

soft

= 3654144 and the UE is capable of supporting no more than a maximum of two spatial layers for the DL

cell,

= 2

else

= 1

End if.

MIMO

is equal to 2 if the UE is configured to receive PDSCH transmissions based on transmission modes 3, 4, 8, 9 or

10 as defined in section 7.1 of [3], and is equal to 1 otherwise.

DL_HARQ

is the maximum number of DL HARQ processes as defined in section 7 of [3].

剩余95页未读，继续阅读

gzlen

粉丝: 0
资源: 4

3GPP TS 36.212：LTE演进的多路复用与信道编码技术规范

中文release3GPP协议集.rar

高清版3gpp 38系列 5G最新冻结版本（附中文文档目录）.zip

38901-f00_TR38.901_TR38.901V14.0.0_38.901_38.901协议_3gpp协议38.901_

最新3GPP协议射频协议

3gpp协议

3GPP协议

3GPP.rar_3GPP_3GPP协议

3Gpp.rar_3GPP_3GPP协议

3gpp标准 3GPP协议中文版

3gpp.rar_3GPP_3GPP协议_word 查询

最新资源