ETSI TS 101 376-5-3 V3.1.1 (2009-07)

ETSI TS 101 376-5-3 V3.1.1 (2009-07)
Technical Specification


GEO-Mobile Radio Interface Specifications (Release 3)
Third Generation Satellite Packet Radio Service;
Part 5: Radio interface physical layer specifications;
Sub part 3: Channel Coding;
GMR-1 3G 45.003

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GMR-1 3G 45.003 2 ETSI TS 101 376-5-3 V3.1.1 (2009-07)




Reference
RTS/SES-00309-5-3
Keywords
3G, coding, GMPRS, GMR, GPRS, GSM, GSO,
interface, MES, mobile, MSS, radio, satellite
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© European Telecommunications Standards Institute 2009.
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GMR-1 3G 45.003 3 ETSI TS 101 376-5-3 V3.1.1 (2009-07)

Contents
Intellectual Property Rights . 11
Foreword . 11
Introduction . 12
1 Scope . 14
2 References . 14
2.1 Normative references . 14
2.2 Informative references . 15
3 Definitions and abbreviations . 15
3.1 Definitions . 15
3.2 Abbreviations . 15
4 General . 16
4.1 General organization . 16
4.2 Naming convention . 16
4.3 Parity checking . 16
4.4 Convolutional coding . 17
4.4.1 Convolutional encoding (all channels except TCH3) . 17
4.4.1.1 Rate 1/2 convolutional code . 17
4.4.1.2 Rate 1/4 convolutional code . 17
4.4.1.3 Rate 1/3 convolutional code . 17
4.4.1.4 Rate 1/5 convolutional code . 17
4.4.1.5 Rate 1/2 convolutional code (constraint length 9) . 17
4.4.2 Convolutional encoding for TCH3 . 17
4.4.3 Viterbi decoder for TCH3 . 17
4.4.4 Convolutional encoding for Extended PUI . 18
4.4.5 Tail Biting Rate 1/2 convolutional code, constraint length 5 . 18
4.4.6 Tail Biting Rate 1/2 convolutional code, constraint length 9 . 18
4.4.7 Tail Biting Rate 1/3 convolutional code, constraint length 5 . 19
4.4.8 Rate ¼ Constraint length 9 Convolutional Encoder . 19
4.4.9 Rate 1/3 Constraint length 9 Convolutional Encoder . 20
4.5 Puncturing and repetition . 20
4.6 Golay encoding . 24
4.7 Reed-Solomon encoding . 25
4.7.1 Encoder . 25
4.7.2 Galois field arithmetics . 25
4.7.3 Encoder feedback register operation . 25
4.8 Interleaving. 25
4.8.1 Intraburst interleaving . 25
4.8.2 Interburst interleaving . 25
4.9 Scrambling . 25
4.10 LDPC Codes . 25
4.11 Turbo codes . 29
4.11.1 Turbo encoder . 29
4.11.2 Turbo Code Termination . 30
4.11.3 Turbo code internal interleaver . 30
4.11.4 Turbo Code Puncturing . 32
5 Traffic channels . 35
5.1 Traffic channel-3 (TCH3). 35
5.1.1 Channel coding . 35
5.1.2 Interleaving . 35
5.1.3 Scrambling, multiplexing, and encryption . 36
5.2 Traffic channel-6 (TCH6). 36
5.2.1 Channel coding . 36
5.2.1.1 Coding for 2,4 kbps fax . 36
ETSI

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GMR-1 3G 45.003 4 ETSI TS 101 376-5-3 V3.1.1 (2009-07)

5.2.1.2 Coding for 2,4 kbps data . 36
5.2.1.3 Coding for 4,8 kbps fax/data . 36
5.2.2 Interleaving . 36
5.2.3 Scrambling, multiplexing, and encryption . 36
5.3 Traffic channel-9 (TCH9). 36
5.3.1 Channel coding . 36
5.3.1.1 Coding for 2,4 kbps fax . 36
5.3.1.2 Coding for 4,8 kbps fax . 36
5.3.1.3 Coding for 9,6 kbps fax/data . 36
5.3.2 Interleaving . 36
5.3.3 Scrambling, multiplexing, and encryption . 36
6 Control channels . 37
6.1 Broadcast Control CHannel (BCCH) . 37
6.1.1 Channel coding . 37
6.1.2 Interleaving . 37
6.1.3 Scrambling and multiplexing . 37
6.1a Broadcast Control Channel over DC12 burst . 37
6.1a.1 Channel coding . 37
6.1a.2 Interleaving . 37
6.1a.3 Scrambling and multiplexing . 37
6.2 Paging CHannel (PCH) . 37
6.2.1 Channel coding . 37
6.2.2 Interleaving . 37
6.2.3 Scrambling and multiplexing . 37
6.2a Paging Channel over DC12 burst . 38
6.2a.1 Channel coding . 38
6.2a.2 Interleaving . 38
6.2a.3 Scrambling and multiplexing . 38
6.3 Access Grant CHannel (AGCH) . 38
6.3.1 Channel coding . 38
6.3.2 Interleaving . 38
6.3a Access Grant Channel over DC12 burst . 38
6.3a.1 Channel coding . 38
6.3a.2 Interleaving . 38
6.3a.3 Scrambling and multiplexing . 38
6.4 Broadcast Alerting CHannel (BACH) . 38
6.4.1 Channel coding . 39
6.5 Random Access CHannel (RACH) . 39
6.5.1 Channel coding . 39
6.5.2 Interleaving . 39
6.5.3 Scrambling and multiplexing . 39
6.5a Random Access Channel3 (RACH3) . 39
6.5a.1 Channel coding . 39
6.5a.2 Interleaving . 39
6.5a.3 Scrambling and multiplexing . 39
6.6 Cell Broadcast CHannel (CBCH) . 39
6.6.1 Channel coding . 39
6.6.2 Interleaving . 39
6.7 Standalone Dedicated Control CHannel (SDCCH) . 40
6.7.1 Channel coding . 40
6.7.2 Interleaving . 40
6.7.3 Scrambling, multiplexing, and encryption . 40
6.8 Slow Associated Control CHannel (SACCH) . 40
6.8.1 Channel coding . 40
6.8.2 Interleaving . 40
6.9 Fast Associated Control CHannel-3 (FACCH3) . 40
6.9.1 Channel coding . 40
6.9.2 Interleaving . 40
6.9.3 Scrambling, multiplexing, and encryption . 40
6.10 Fast Associated Control CHannel-6 (FACCH6) . 40
6.10.1 Channel coding . 40
ETSI

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GMR-1 3G 45.003 5 ETSI TS 101 376-5-3 V3.1.1 (2009-07)

6.10.2 Interleaving . 41
6.10.3 Scrambling, multiplexing, and encryption . 41
6.11 Fast Associated Control CHannel-9 (FACCH9) . 41
6.11.1 Channel coding . 41
6.11.2 Interleaving . 41
6.11.3 Scrambling, multiplexing, and encryption . 41
6.12 Terminal-to-terminal Associated Control CHannel (TACCH). 41
6.12.1 TACCH channel coding . 41
6.12.2 Interleaving . 41
6.12.3 Scrambling and multiplexing . 41
6.12.4 PHYsical (PHY) header for TACCH . 41
6.13 GPS Broadcast CHannel (GBCH) . 41
6.13.1 Channel coding . 41
6.13.2 Interleaving . 42
6.13.3 Scrambling and multiplexing . 42
6.13a GPS Broadcast Channel3 (GBCH3) . 42
6.13a.1 Channel coding . 42
6.13a.2 Interleaving . 42
6.13a.3 Scrambling and multiplexing . 42
6.14 ULMAP . 42
6.14.1 ULMAP for PNB3 (5,3)/downlink . 42
6.14.1.1 Channel coding . 42
6.14.1.2 Interleaving . 42
6.14.1.3 Scrambling and multiplexing . 42
6.14.1.4 Repetition . 43
6.14.2 ULMAP for PNB3(5,12)/downlink . 43
6.14.2.1 Channel coding . 43
6.14.2.2 Interleaving . 43
6.14.2.3 Scrambling and multiplexing . 43
6.14.2.4 Repetition . 43
6.14.3 ULMAP for PNB3 (10,3) . 43
6.14.3.1 Channel coding . 43
6.14.3.2 Interleaving . 43
6.14.3.3 Scrambling and multiplexing . 43
6.14.3.4 Repetition . 44
7 Logical channel multiplexing . 44
7.1 SACCH multiplexing . 44
7.2 Status field . 44
7.2.1 Power control field. 44
7.2.1.1 DCH (Dedicated Channel) Power control field. 44
7.2.2 Comfort noise field . 45
7.2.3 Link Quality Indicator field . 45
7.3 Status field with NTN bursts . 45
7.3.1 Status field with NT6 and NT9 bursts . 45
7.3.2 Status field with NT3 bursts . 45
7.3.2.1 Status field with NT3 bursts for encoded speech . 45
7.3.2.2 Status field with NT3 bursts for FACCH . 45
7.3.3 Status field with Keep-Alive Bursts (KAB) . 45
7.4 Status field with DCH bursts . 45
7.4.1 Status field with PNB3(1,3), PNB3(1,6), and PNB3(1,8). 45
7.4.2 Status field with KAB3(1,3), . 46
7.4.3 Status field with KAB3(1,6) . 46
7.4.4 Status field with KAB3(1,8) . 46
8 Encryption . 46
9 Packet Switched Channels. 46
9.1 Packet Data Traffic Channels . 46
9.1.1 PUblic Information (PUI) .
...