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GB/T 34991-2017 English PDF

Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 34991-2017RFQ ASK 3 days 12.5 kHz TDMA channel based professional digital trunking communication system -- Technical specifications for physical layer and data link layer of air interface Valid

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Basic data

Standard ID: GB/T 34991-2017 (GB/T34991-2017)
Description (Translated English): 12.5 kHz TDMA channel based professional digital trunking communication system -- Technical specifications for physical layer and data link layer of air interface
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: M36
Classification of International Standard: 33.060.99
Word Count Estimation: 138,193
Date of Issue: 2017-11-01
Date of Implementation: 2018-02-01
Regulation (derived from): National Standard Announcement 2017 No. 29
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 34991-2017: 12.5 kHz TDMA channel based professional digital trunking communication system -- Technical specifications for physical layer and data link layer of air interface


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
12.5 kHz TDMA channel based professional digital trunking communication system-Technical specifications for physical layer and data link layer of air interface ICS 33.060.99 M36 National Standards of People's Republic of China Based on 12.5kHz channel time division multiple access (TDMA) Dedicated digital trunking communication system air interface Physical layer and data link layer technical specifications 12.5kHz TDDMAchannelbasedprofessionaldigitaltrunkingcommunication airinterface Posted.2017-11-01 2018-02-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword IX Introduction Ⅹ 1 Scope 1 2 Normative references 1 3 Terms, definitions and abbreviations 1 3.1 Terms and definitions 1 3.2 Abbreviations 2 4 Overview 4 4.1 protocol architecture 4 4.2 Time Division Multiple Access Frame Structure 5 4.3 timing reference 10 4.4 Basic channel type 10 5 physical layer 12 5.1 General parameters 12 5.2 Modulation 12 6 Data Link Layer Protocol Description 17 6.1 Data Link Layer Timing 17 6.2 Channel Access 26 7 data link layer burst format 39 7.1 Data Link Layer Burst Format Overview 39 7.2 Voice Burst 39 7.3 Data and Control 40 7.4 Public Broadcasting Channel Burst 41 7.5 Reverse Channel Burst 42 Data Link Layer Control Signaling Format 8.1 Link Control Frame Structure 43 8.2 Control Signaling Frame Message Structure 48 8.3 Free Message Structure 49 8.4 multi-frame control message structure 50 8.5 End-to-End Voice Encryption Control Frame Structure 53 Data Link Layer Packet Data Protocol 9.1 Data Fragmentation and Reassembly 54 9.2 Data Header Frame Structure 56 9.3 Data Frame Structure 61 10 protocol data unit 70 10.1 Voice, General Data and Public Broadcasting Channel PDUs 10.2 Data Related PDU Definitions 72 10.3 Data Link Layer Information Element Code 81 Appendix A (Normative) Timer Definition 94 A.1 Channel activity monitor timer T_ChMonTo 94 A.2 channel activity synchronization timer T_ChSyncTo 94 A.3 Mobile station inactivity timer 94 A.4 Channel Suspension Time T_ChHt 94 A.5 listening timer T_Monitor 94 A.6 TXCC timer T_TxCC 94 A.7 Synchronization wake-up timer T_SyncWu 94 A.8 TXCC slot timer T_TxCCSlot 94 A.9 Idle search timer T_IdleSrch 95 A.10 Random back-off timer T_Holdoff 95 A.11 Acknowledge wait timer T_AckWait 95 Appendix B (Normative) Constant Definition 96 B.1 Default Threshold N_RssiLo 96 B.2 wake up the number of retransmissions N_Wakeup 96 B.3 Maximum length of data segment N_DfragMax 96 Appendix C (Normative) FEC and CRC coding 97 C.1 Division Product Turbo Code 97 C.2 Variable length packet product Turbo code 102 C.3 Generate matrix and generator polynomial 114 C.4 Broadcasting channels intertwined 124 Appendix D (Normative) Idle Messages and Null Populate Embedded Message Definitions 125 D.1 Null Fills Embedded Messages 125 D.2 Free Message 125 Appendix E (Normative) Reverse Channel Timing 126 E.1 Through Mode Timing 126 E.2 Reverse Channel Timing 126 Figure 1 air interface protocol stack structure 4 Figure 2 TDMA timing 6 Figure 3 common burst structure 6 Figure 4 uplink TDMA frame structure 7 Figure 5 downlink TDMA frame structure 7 Figure 6 uplink synchronization timing 8 Figure 7 downlink synchronization timing 8 Figure 8 Access Control Indication 9 Figure 9 CACH slot indication timing 9 Figure 10 Traffic Channel with Public Broadcast Channel 10 Figure 11 Traffic channel with guard time 11 Figure 12 Bidirectional Channel 11 Figure 13 4FSK modulator 13 Figure 14 Time Division Multiple Access Frame Format 14 Figure 15 Burst Power Limit Envelope 14 Figure 16 burst symbol timing 15 Figure 17 Reverse Channel Burst Power Waveform 16 Figure 18 Reverse Channel Burst Symbol Timing 16 Figure 19 Align Channel Mode 17 Figure 20 Offset Channel Mode 18 Figure 21 Voice Superframe 18 Figure 22 Speech with Link Control Head 18 Figure 23 No Link Control Head Initial Stage Speech 19 Figure 24 Speech with Link Control Header and Encryption Indicator 19 Figure 25 Voice with Encryption Indicator 19 Figure 26 Voice over 20 Figure 27 Single Data Head Data Transfer Timing 20 Figure 28 Dual Data Head Data Transfer Timing 20 Figure 29 Dual Slot Data Transmission Timing 20 Figure 30 Alignment Mode Timing 21 Figure 31 Offset Mode Timing with 30ms Delay 21 Figure 32 90ms Delay Offset Timing 22 Figure 33 Single-frequency base station timing 22 Figure 34 Stratix Pattern Timing 22 Figure 35 Time Division Duplex Voice Timing 23 Figure 36 Voice Continuous Transmission Mode 23 Figure 37 Data Continuous Transmission Mode 23 Figure 38 Embedded Reverse Channel Timing 24 Figure 39 Dedicated Reverse Channel Timing 25 Figure 40 Independent Upstream Reverse Channel Timing 25 Figure 41 Direct Mode Reverse Channel Timing 26 Figure 42 Dual-band base station channel 26 Figure 43 Single Frequency (Bidirectional) Channel 27 Figure 44 out of step state of the channel access (through mode) Fig. 45 Channel access in out-of-sync listening mode (through mode) Figure 46 Synchronization to Unknown System Channel Access (Through Mode) 32 Figure 47 out of sync channel access (transit mode) 33 Figure 48 out of step listening channel access state (transit mode) 34 Figure 49 Synchronization to Unknown System Channel Access (Transit Mode) 35 Figure 50 Transmit Wakeup Message (Transit Mode) Figure 51 Channel Access Not in Call (Transit Mode) 37 Figure 52 Other in-progress channel access (transit mode) 38 Figure 53 Non-real-time reply control signaling channel access 39 Figure 54 Universal Speech Burst 39 Figure 55 Speech burst with sync word 40 Figure 56 Voice Burst with Embedded Signaling 40 Figure 57 General Data Burst 41 Figure 58 CACH burst 41 Figure 59 Independent Uplink Reverse Channel Burst 42 Figure 60 Downstream Reverse Signaling Burst 43 Figure 61 complete link control signaling structure 44 Figure 62 Short Link Control Signaling Structure 44 Figure 63 Voice Link Control Header Format 45 Figure 64 Link Control End Frame 45 Figure 65 downlink voice superframe 46 Figure 66 uplink voice superframe 47 Figure 67 Short Link Control Signaling 47 Figure 68 Control Signaling Frame Message Structure Figure 69 Control signaling frame format 49 Figure 70 Idle message format 49 Figure 71 MBC header frame message structure 50 Figure 72 MBC intermediate frame message structure 51 Figure 73 MBC End Frame Message Structure 51 Figure 74 MBC header format 52 Figure 75 MBC intermediate frame format 52 Figure 76 MBC End Frame Format 53 Figure 77 End-to-End Voice Encryption Control Frame Structure 54 Figure 78 Datagram Split 55 Figure 79 General Data Head Structure 56 Figure 80 No Confirmation Data Header Structure 57 Figure 81 has a confirmation data header frame structure 57 Figure 82 Response Header Structure 58 Figure 83 Proprietary Data Header Structure 58 Figure 84 Status or precoded short data header frame structure 59 Figure 85 Header Structure of Original Short Data Packet 59 Figure 86 Preformatted Short Data Header Frame Structure 60 Figure 87 Unified Data Transfer Data Header Structure 60 Figure 88 1/2 unconfirmed data frame structure of coding rate 62 Figure 89 Unconfirmed data frame structure for 3/4 code rate 63 Figure 90 Unconfirmed data frame structure at full code rate 64 Figure 91 3/4 Acknowledgment data frame format 65 Figure 92 1/2 Acknowledgment Data Frame Format for Code Rate 66 Fig. 93 The full code rate has confirmed the data frame format 67 Figure 94 Response Data Frame Structure 68 Figure 95 Data End LC Signaling Structure 69 Figure 96 UDT Data End Frame Structure 70 Figure C.1 BPTC (196, 96) 97 Figure C.2 Embedded Signaling BPTC Format 102 Figure C.3 Embedded Signaling Burst Format 103 Figure C.4 Reverse Channel Coding Format 104 Figure C.5 CACHBPTC encoding format 105 Figure C.6 CACH Short Link Control Message Encoding Format 106 Figure C.7 3/4 code rate trellis code encoder block diagram 107 Figure C.8 Network Coder Module Figure 108 Figure C.9 Full rate coded data 111 Figure C.10 Double-byte alignment of user data and padding bits Figure C.11 User Data and Pad Byte 118 is arranged linearly in 8 bit words Figure C.12 Sorting of CRC Fields 119 Figure C.13 3/4 Code Rate Acknowledgment User Data Bit Number 119 Figure C.14 CACH burst interleaver 124 Figure E.1 Through Mode Timing Diagram 126 Figure E.2 Reverse Channel Timing Diagram 126 Table 1 4FSK bit symbol corresponding frequency offset 12 Table 2 logical channel and uplink and downlink time slot correspondence 17 Table 3 Data Type Information Definition 53 Table 4 data frame carrying capacity 55 Table 5 FSN coding scheme 56 Table 6 Response Grouping Categories, Types, and Status Definitions 67 Table 7 Synchronization PDUs Table 8 synchronization word 71 TABLE 9 PDU contents of embedding signaling (EMB) 71 Table 10 SlotType PDU Contents 71 Table 11 Reverse Channel PDU Contents 72 TABLE 12 TACT PDU Contents 72 Table 13 shows PDU contents 72 of the data header frame (C_HEAD) Table 14 3/4 Encoding Rate PDU Contents of Confirmed Packet Data (R_3_4_DATA) 73 Table 15 3/4 Encoding rate PDU contents without acknowledgment packet data (R_3_4_DATA) 73 Table 16 PDU Contents of 3/4 Encoding Rate Confirmed Packet Data (R_3_4_DATA) Table 17 3/4 Encoding rate PDU contents of unacknowledged packet data (R_3_4_DATA) 74 Table 18 has PDU contents 74 of acknowledgment packet data response header (C_RHEAD) Table 19 contains the PDU contents 75 of the acknowledgment packet data response data frame (C_RDATA) Table 20 PDU contents without acknowledgment data packet header (U_HEAD) 75 Table 21 1/2 PDU Content of Confirmed Data Frame (R_1_2_DATA) 76 Table 22 1/2 Rate Acknowledge Data Frame (R_1_2_DATA) Content 76 Table 23 1/2 Contents of PDU with acknowledgment data frame (R_1_2_LDATA) 76 TABLE 24 1/2 Contents of PDU Contents of Unconfirmed Data Frames (R_1_2_LDATA) 76 Table 25 PDU Contents of a Private Data Header Frame (P_HEAD) 77 Table 26 PDU Contents of Status Message Data Header Frame (SP_HEAD) 77 Table 27 PDU Contents of Original Short Message Data Header Frame (R_HEAD) 78 Table 28 PDU Contents of a Predefined Format Short Data Header Frame (DD_HEAD) 78 Table 29 Uniform Data Transmission Data Header Frame (UDT_HEAD) PDU Contents 79 Table 30 Uniform Data Transfer Data End Frame (UDT_LDATA) PDU Contents 79 Table 31 PDU Content 80 with Full Code Rate Acknowledgment Data Frame (R_1_DATA) Table 32 Full-rate non-acknowledged PDU contents 80 of data frame (R_1_DATA) Table 33 PDU Contents 80 with Full Code Rate Validation End Frame (R_1_LDATA) Table 34 Full-rate unacknowledged data end frame (R_1_LDATA) PDU contents 80 Table 35 PDU Contents 81 of Data Link Control End Frame (TD_LC) Table 36 Color Code (CC) Information Content 81 Table 37 Information Content of Encryption Indication (PI) 81 Table 38 Information Content of Link Control Start/End (LCSS) 82 Table 39 Information Content of Function Set ID 82 Table 40 Information content of data type (DT) 83 Table 41 Access Type (AT) Information Content 83 Table 42 Information content of time division multiple access channel information (TC) 84 Table 43 Information on the protection mark (PF) 84 Table 44 Complete Link Control Order Code (FLCO) Message Content 84 Table 45 Information Contents of Short Link Control Order Code (SLCO) 84 Table 46 Information content for single call or group call address identification (IG) 85 Table 47 Information Content of Response Request ID (A) 85 Table 48 Information content of data packet format (DPF) 85 Table 49 Compression Header (HC) Message Content 86 Table 50 Service Access Point (SAP) Information Content 86 Table 51 Logical Link ID (LLID) Message Content 86 Table 52 Message Completeness Identifier (FMF) message content 87 Table 53 Information content of subsequent frames (BF) 87 Table 54 Information content of data end instruction (DEI) 87 Table 55 Resynchronization Information (S) Content 87 Table 56 sends the message content of sequence number N (S) 88 Table 57 Information Content of Sheet Number (FSN) 88 Table 58 Information Content of Data Frame Number (DBSN) 88 Table 59 Information Content for Response Class 89 Table 60 Information Type for Response Type 89 Table 61 Information Content for Response Status 89 Table 62 Control signaling frame end identification (LB) message content 89 Table 63 Control signaling command code (CSBKO) message content 90 Table 64 Information content of additional data frame number (AB) 90 Table 65 Source Port (SP) Information Content 90 Table 66 Destination Port (DP) Information Content 90 Table 67 Status/Pre-coded (S_P) message content 90 Table 68 Selective Automatic Repeat Request (SARQ) message content Table 69 Information Content for Predefined Data Formats (DDs) Table 70 Information content of the UDTFormat 92 Table 71 Unified Data Additional Data Frame Number (UAB) Information Content 92 Table 72 Supplementary Service Identity (SF) Informational Content 92 Table 73 Information content of 4-bit padding 93 Table B.1 Default Thresholds 96 Table C.1 Index after interleaving BPTC (196, 96) Table 98 Table C.2 BPTC (196, 96) Transmission bit order 100 Table C.3 Reverse Channel Coding Interleaving Index 104 Table C.4 Reverse Channel Coding Bit Transmission Order Table 104 Table C.5 Trellis code word size 107 Table C.6 Trellis Coder State Transfer Table 108 Table C.7 Constelation and dibitpair mapping table Table C.8 3/4 coding rate trellis coding interleaving scheme Table C.9 3/4 code rate trellis code bit transmission order 110 Table C.10 full coding rate coding padding data 111 Table C.11 Full coding rate coded bit transmission order 112 Table C.12 Generation Matrix of Gray (20,8) Codes 114 Table C.13 Generate matrix 114 of quadratic (square) residual codes QR (16, 7, 6) Table C.14 Generating Matrix for Hamming (17, 12, 3) Codes 115 Table C.15 Hamming (13,9,3) code generation matrix 115 Table C.16 Hamming (15,11,3) code generation matrix 116 Table C.17 Hamming (16,11,4) code generation matrix 116 Table C.18 Hamming (7,4,3) code generation matrix 116 Table C.19 Generation matrix of RS (15, 12, 4) codes 121 Table C.20 Index Table .B = αe 122 Table C.21 logarithmic table .e = lg (B) 122 Table C.22 Initial value of CRC/RS corresponding to each DT 123 Table D.1 Null populates an embedded message Table D.2 Idle Messages

Foreword

This standard is based on 12.5kHz channel time division multiple access (TDMA) dedicated digital trunking communications system standard series. The series The standard structure and name are estimated as follows. --- Based on 12.5kHz channel time division multiple access (TDMA) dedicated digital trunking communications system general technical specifications; --- 12.5kHz channel-based time division multiple access (TDMA) dedicated digital trunking communication system air interface physical layer and data link Road technical specifications; --- 12.5kHz channel-based time division multiple access (TDMA) dedicated digital trunking communication system air interface call control layer technology specification; --- 12.5kHz channel-based time division multiple access (TDMA) dedicated digital trunking communication system mobile terminal technical specifications; --- 12.5kHz channel-based time division multiple access (TDMA) dedicated digital trunked communication system security technical specifications; --- 12.5kHz channel-based time division multiple access (TDMA) dedicated digital trunking communication system system interconnection specifications. This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard by the National Communications Standardization Technical Committee (SAC/TC485) centralized. This standard was drafted unit. Ministry of Public Security Information Technology Bureau, Hainengda Communication Co., Ltd., Hangzhou Cheng Lian Communication Technology Co., Ltd., public First Institute of Ministry of Security, Beijing million grid Digital Technology Co., Ltd., gifted Communications Technology (Hangzhou) Co., Ltd., Guangzhou Vader Technology Co., Ltd. Division, Shenzhen Ke Li Electronics Co., Ltd. The main drafters of this standard. Lei Lei, Sun Pengfei, Song Feihao, Li Jiang, Song Zhen Su, Rong Jun, Liu Qingjiang, Jiang Qingsheng, Wang Weimin, Zhu Zhenrong, Liang Yansheng, Liu Jun.

Introduction

The issuing authority for this document draws attention to the fact that statements consistent with this document may relate to the methods of error detection in Appendix C.3.12 and data blocks, 6.2.2 and 6.2.3 Use of patents relating to methods for providing channel access for voice transmission. The issuing authority of this document has no position whatsoever about the truthfulness, validity and scope of this patent. These patent holders and applicants have assured the issuing authority of this document that he is willing to cooperate with any applicant in a reasonable and non-discriminatory Under the terms and conditions of the patent licensing negotiations. The declarations of these patent holders and claimants are filed with the issuing authority of this document. Related information can be obtained through the following contact. Patent Holder Name. Hangzhou Cheng Lian Communication Technology Co., Ltd. Address. Weiye Road, Hangzhou, Zhejiang Province on the 8th floor, No. 1 Patent Holder Name Motorola Systems (China) Limited Address. No. 1 Wangjing East Road, Chaoyang District, Beijing, Motorola Building Please note that in addition to the above patents, some of the contents of this document may still involve patents. The issuing agencies of this document are not responsible for identifying these specializations Lee's responsibility. Based on 12.5kHz channel time division multiple access (TDMA) Dedicated digital trunking communication system air interface Physical layer and data link layer technical specifications

1 Scope

This standard specifies the 12.5kHz channel-based time division multiple access (TDMA) dedicated digital trunking communication system air interface physical layer and Data link layer technical specifications, including the overall protocol architecture, modulation, frame structure, channel codec and so on. This standard applies to the frequency range of 30MHz ~ 1GHz based on 12.5kHz channel time division multiple access (TDMA) dedicated digital Cluster communication system (hereinafter referred to as "cluster system").

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this standard quasi. For undated references, the latest edition (including all amendments) applies to this document. GB/T 34992-2017 based on 12.5kHz channel time division multiple access (TDMA) dedicated digital trunking communication system air interface Call control layer technical specifications 3 Terms, definitions and abbreviations 3.1 Terms and definitions The following terms and definitions apply to this document. 3.1.1 Forward channel forwardchannel In passthrough mode, the channel from the originator of the call to the receiver. 3.1.2 Backward channel backwardchannel I......
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