ETSI TS 101 376-5-3 V2.3.1 (2008-07)

ETSI TS 101 376-5-3 V2.3.1 (2008-07)
Technical Specification


GEO-Mobile Radio Interface Specifications (Release 2);
General Packet Radio Service;
Part 5: Radio interface physical layer specifications;
Sub-part 3: Channel Coding;
GMPRS-1 05.003

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GMPRS-1 05.003 2 ETSI TS 101 376-5-3 V2.3.1 (2008-07)




Reference
RTS/SES-00303-5-3
Keywords
coding, GMPRS, GMR, GPRS, GSM, GSO,
interface, MES, mobile, MSS, radio, satellite,
S-PCN
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GMPRS-1 05.003 3 ETSI TS 101 376-5-3 V2.3.1 (2008-07)

Contents
Intellectual Property Rights.7
Foreword.7
Introduction .8
1 Scope.9
2 References.9
2.1 Normative references.9
2.2 Informative references.10
3 Definitions and abbreviations.10
3.1 Definitions.10
3.2 Abbreviations.10
4 General.10
4.1 General organization.10
4.2 Naming convention.10
4.3 Parity checking.10
4.4 Convolutional coding.11
4.4.1 Convolutional encoding (all channels except TCH3) .11
4.4.1.1 Rate 1/2 convolutional code.11
4.4.1.2 Rate 1/4 convolutional code.11
4.4.1.3 Rate 1/3 convolutional code.11
4.4.1.4 Rate 1/5 convolutional code.11
4.4.1.5 Rate 1/2 convolutional code (constraint length 9).11
4.4.2 Convolutional encoding for TCH3 .12
4.4.3 Viterbi decoder for TCH3.12
4.4.4 Convolutional encoding for Extended PUI.12
4.5 Puncturing and repetition.12
4.6 Golay encoding.15
4.7 Reed-Solomon encoding.15
4.7.1 Encoder.15
4.7.2 Galois field arithmetics.15
4.7.3 Encoder feedback register operation.15
4.8 Interleaving.15
4.8.1 Intraburst interleaving.15
4.8.2 Interburst interleaving.15
4.9 Scrambling.16
4.10 LDPC Codes.16
4.10.1 General Operations.16
4.10.2 LDPC Encoding.17
4.10.3 Bit Interleaver.19
5 Traffic channels.19
5.1 Traffic channel-3 (TCH3).19
5.1.1 Channel coding.19
5.1.2 Interleaving.20
5.1.3 Scrambling, multiplexing, and encryption.20
5.2 Traffic channel-6 (TCH6).20
5.2.1 Channel coding.20
5.2.1.1 Coding for 2,4 kbps fax.20
5.2.1.2 Coding for 2,4 kbps data .20
5.2.1.3 Coding for 4,8 kbps fax/data.20
5.2.2 Interleaving.20
5.2.3 Scrambling, multiplexing, and encryption.20
5.3 Traffic channel-9 (TCH9).20
5.3.1 Channel coding.20
5.3.1.1 Coding for 2,4 kbps fax.20
ETSI

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GMPRS-1 05.003 4 ETSI TS 101 376-5-3 V2.3.1 (2008-07)

5.3.1.2 Coding for 4,8 kbps fax.20
5.3.1.3 Coding for 9,6 kbps fax/data.20
5.3.2 Interleaving.20
5.3.3 Scrambling, multiplexing, and encryption.21
6 Control channels.21
6.1 Broadcast Control CHannel (BCCH) .21
6.1.1 Channel coding.21
6.1.2 Interleaving.21
6.1.3 Scrambling and multiplexing.21
6.2 Paging CHannel (PCH) .21
6.2.1 Channel coding.21
6.2.2 Interleaving.21
6.2.3 Scrambling and multiplexing.21
6.3 Access Grant CHannel (AGCH) .21
6.3.1 Channel coding.21
6.3.2 Interleaving.21
6.4 Broadcast Alerting CHannel (BACH).22
6.4.1 Channel coding.22
6.5 Random Access CHannel (RACH) .22
6.5.1 Channel coding.22
6.5.2 Interleaving.22
6.5.3 Scrambling and multiplexing.22
6.6 Cell Broadcast CHannel (CBCH).22
6.6.1 Channel coding.22
6.6.2 Interleaving.22
6.7 Standalone Dedicated Control CHannel (SDCCH).22
6.7.1 Channel coding.22
6.7.2 Interleaving.22
6.7.3 Scrambling, multiplexing, and encryption.22
6.8 Slow Associated Control CHannel (SACCH) .23
6.8.1 Channel coding.23
6.8.2 Interleaving.23
6.9 Fast Associated Control CHannel-3 (FACCH3) .23
6.9.1 Channel coding.23
6.9.2 Interleaving.23
6.9.3 Scrambling, multiplexing, and encryption.23
6.10 Fast Associated Control CHannel-6 (FACCH6) .23
6.10.1 Channel coding.23
6.10.2 Interleaving.23
6.10.3 Scrambling, multiplexing, and encryption.23
6.11 Fast Associated Control CHannel-9 (FACCH9) .23
6.11.1 Channel coding.23
6.11.2 Interleaving.24
6.11.3 Scrambling, multiplexing, and encryption.24
6.12 Terminal-to-terminal Associated Control CHannel (TACCH).24
6.12.1 TACCH channel coding.24
6.12.2 Interleaving.24
6.12.3 Scrambling and multiplexing.24
6.12.4 PHYsical (PHY) header for TACCH.24
6.13 GPS Broadcast CHannel (GBCH).24
6.13.1 Channel coding.24
6.13.2 Interleaving.24
6.13.3 Scrambling and multiplexing.24
7 Logical channel multiplexing.24
7.1 SACCH multiplexing.24
7.2 Status field.25
7.2.1 Power control field.25
7.2.2 Comfort noise field.25
7.3 Status field with NTN bursts .25
7.3.1 Status field with NT6 and NT9 bursts .25
ETSI

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GMPRS-1 05.003 5 ETSI TS 101 376-5-3 V2.3.1 (2008-07)

7.3.2 Status field with NT3 bursts .25
7.3.2.1 Status field with NT3 bursts for encoded speech .25
7.3.2.2 Status field with NT3 bursts for FACCH.25
7.3.3 Status field with Keep-Alive Bursts (KAB) .25
8 Encryption.25
9 Packet Switched Channels.25
9.1 Packet Data Traffic Channels.25
9.1.1 PUblic Information (PUI) .26
9.1.1a Extended PUI.26
9.1.2 Void.26
9.1.3 Packet Normal Burst PNB(4,3).26
9.1.3.1 Rate 1/2 convolutional coding.26
9.1.3.2 Rate 5/8 convolutional coding.26
9.1.3.3 Rate 3/4 convolutional coding.27
9.1.3.4 Interleaving.27
9.1.3.5 Scrambling, multiplexing, and encryption .27
9.1.4 Packet Normal Burst PNB(5,3).27
9.1.4.1 Rate 1/2 convolutional coding.27
9.1.4.2 Rate 5/8 convolutional coding.28
9.1.4.3 Rate 3/4 convolutional coding.28
9.1.4.4 Interleaving.28
9.1.4.5 Scrambling, multiplexing, and encryption .28
9.1.5 Void.28
9.1.6 Packet Normal Burst PNB(1,6).28
9.1.6.1 Rate 3/5 convolutional coding.29
9.1.6.2 Rate 7/10 convolutional coding.29
9.1.6.3 Rate 4/5 convolutional coding.29
9.1.6.4 Interleaving.29
9.1.6.5 Scrambling, multiplexing, and encryption .29
9.1.7 Packet Normal Burst PNB(2,6).30
9.1.7.1 Rate 3/5 convolutional coding.30
9.1.7.2 Rate 7/10 convolutional coding.30
9.1.7.3 Rate 4/5 convolutional coding.30
9.1.7.4 Interleaving.31
9.1.7.5 Scrambling, multiplexing, and encryption .31
9.1.8 Packet Normal Burst PNB2(5,12).31
9.1.8.1 π/4QPSK Rate 0,497 LDPC Coding .31
9.1.8.2 π/4QPSK Rate 0,508 LDPC Coding .31
9.1.8.3 π/4QPSK Rate 0,667 LDPC Coding .31
9.1.8.4 π/4QPSK Rate 0,681 LDPC Coding .32
9.1.8.5 π/4QPSK Rate 0,800 LDPC Coding .32
9.1.8.6 π/4QPSK Rate 0,818 LDPC Coding .32
9.1.8.7 π/4QPSK Rate 0,899 LDPC Coding .32
9.1.8.8 π/4QPSK Rate 0,919 LDPC Coding .33
9.1.8.9 16APSK Rate 0,667 LDPC Coding .33
9.1.8.10 16APSK Rate 0,681 LDPC Coding .33
9.1.8.11 16APSK Rate 0,800 LDPC Coding .33
9.1.8.12 16APSK Rate 0,818 LDPC Coding .34
9.1.8.13 16APSK Rate 0,900 LDPC Coding .34
9.1.8.14 32APSK Rate 0,765 LDPC Coding .34
9.1.8.15 32APSK Rate 0,818 LDPC Coding .34
9.1.8.16 Interleaving.35
9.1.8.17 Scrambling, multiplexing, and encryption .35
9.1.9 LDPC Coded Packet Normal Burst PNB2(5,3).35
9.1.9.1 π/4QPSK Rate 0,509 LDPC Coding .35
9.1.9.2 π/4QPSK Rate 0,660 LDPC Coding .35
9.1.9.3 π/4QPSK Rate 0,793 LDPC Coding .35
9.1.9.4 π/4QPSK Rate 0,894 LDPC Coding .36
9.1.9.5 16APSK Rate 0,664 LDPC Coding .36
9.1.9.6 16APSK Rate 0,797 LDPC Coding .36
ETSI

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GMPRS-1 05.003 6 ETSI TS 101 376-5-3 V2.3.1 (2008-07)

9.1.9.7 16APSK Rate 0,898 LDPC Coding .36
9.1.9.8 32APSK Rate 0,748 LDPC Coding .37
9.1.9.9 32APSK Rate 0,798 LDPC Coding .
...