1、ETSI TS 1 O0 396-7 VI 2.1 (2000-10) Technical Specification Terrestrial Trunked Radio (TETRA); Technical requirements for Direct Mode Operation (DMO); Part 7: Type 2 repeater air interface 2 ETSI TS 1 O0 396-7 V1.2.1 (2000-1 O) The pre Reference DTS/TETRA-02007-7-1 Keywords TETRA, radio, security ET
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6、pean Telecommunications Standards Institute 2000. All rights reserved. ETSI 3 ETSI TS 1 O0 396-7 V1.2.1 (2000-1 O) Contents Intellectual Property Rights 7 Foreword . 7 1 Scope 8 2 References 8 3 Definitions and abbreviations . 9 3.1 Definitions 9 3.2 Abbreviations . 11 4 Overview of protocol 11 4.1
7、General . 11 4.2 The DM channel . 13 4.3 DM call procedures for operation with a type 2 DM-REP . 14 4.3.1 Constraints on the frame structure 15 4.3.2 Setting up a call 16 4.3.2.1 Call set-up without presence check . 16 4.3.2.2 Call set-up with presence check 17 4.3.3 Changeover in a call . 18 4.3.4
8、Pre-emption of a DM call . 19 4.3.5 Terminating a call . 20 4.3.6 DM short data call 20 4.3.6.1 Unacknowledged short data message 20 4.3.6.2 Acknowledged short data message . 21 5 DM-MS layer 3 service description for operation with a type 2 DM-REP 22 6 DM-MS layer 3 protocol for operation with a ty
9、pe 2 DM-REP . 22 7 8 DM-MS layer 2 service description for operation with a type 2 DM-REP 22 DM-MS layer 2 protocol for operation with a type 2 DM-REP . 23 8.1 8.1.1 8.1.2 8.2 8.3 8.3.1 8.3.1.1 8.3.1.2 8.4 8.4.1 8.4.1.1 8.4.1.2 8.4.1.3 8.4.2 8.4.2.1 8.4.2.2 8.4.2.2.1 8.4.2.2.2 8.4.2.2.3 8.4.2.3 8.4.
10、2.4 8.4.2.4.1 8.4.2.4.2 8.4.2.4.3 8.4.2.5 8.4.2.5.1 Introduction 23 Functions of lower MAC 23 Functions of upper MAC 23 Interface between lower and upper MAC . 23 Basic capabilities of the physical layer . 23 DM-MS capabilities 23 DM only and dual mode capable MS operation 24 Dual watch capable MS o
11、peration 24 Usage of DM channel with type 2 DM-REP 24 Definition of DM channel . 25 DM channel arrangement 25 DM channel A operation . 25 DM channel B operation . 26 DM channel states . 27 DM channel state definitions . 27 DM-MS channel surveillance procedures . 27 Initial determination of DM channe
12、l state . 27 DM-MS channel surveillance in idle mode . 28 DM-MS channel surveillance at call set-up . 28 Master DM-MS channel surveillance procedures during a call 29 Slave DM-MS channel surveillance procedures during a call 29 Slave MS channel surveillance during call transaction . 29 Slave MS sign
13、al quality measurement during call transaction 29 Slave MS channel surveillance during reservation 30 Additional master DM-MS surveillance procedures . 30 Surveillance by channel A master MS . 30 ETSI 4 ETSI TS 1 O0 396-7 V1.2.1 (2000-1 O) 8.4.2.5.2 8.4.3 8.4.3.1 8.4.3.2 8.4.4 8.4.4.1 8.4.4.2 8.4.4.
14、3 8.4.4.4 8.4.4.5 8.4.4.6 8.4.4.7 8.4.5 8.4.5.1 8.4.5.2 8.4.6 8.4.7 8.4.7.1 8.4.7.2 8.4.7.3 8.4.7.4 8.4.7.5 8.4.7.6 8.4.7.7 8.4.7.8 8.4.7.9 8.4.7.10 8.4.7.10.1 8.4.7.10.2 8.4.7.10.3 8.4.7.11 8.4.7.12 8.4.7.13 8.4.7.14 8.4.7.15 8.4.7.16 8.5 8.5.1 8.5.2 8.5.3 8.5.4 8.5.5 8.5.6 8.5.7 8.5.7.1 8.5.7.2 8.
15、5.7.2.1 8.5.7.2.2 8.5.7.2.3 8.5.7.2.4 8.5.7.3 8.5.7.3.1 8.5.7.3.2 8.5.7.3.3 8.5.7.3.4 8.5.7.3.5 8.5.7.3.6 8.6 Surveillance by channel B master MS . 30 DM-MAC states 31 DM-MAC state definitions . 31 Criteria for changing DM-MAC state . 31 DM-MS channel monitoring procedures 31 DM channel during initi
16、al call set-up and new call transaction by current master MS . 31 DM channel during call set-up with presence check . 31 DM channel in occupation during a circuit mode call . 32 DM channel in reservation during a circuit mode call 32 DM channel in occupation during an SDS call . 32 DM channel usage
17、during pre-emption signalling 32 DM channel usage during timing change request signalling . 32 Transmission of layer 3 messages by DM-MAC 32 Transmission of C-plane messages by DM-MAC . 32 Transmission of U-plane messages by DM-MAC 33 Transmission of layer 2 messages generated by DM-MAC . 33 General
18、 DM-MAC procedures . 33 DM-MAC repeat transmissions 33 DM-MAC frame countdown procedure 33 Use of timers . 33 Linearization . 34 Fragmentation . 34 Fill bit indication . 34 Selection of pseudo address 35 Slot flag indication 35 Requests bitmap 35 DM aspects of dual watch operation . 35 Model of oper
19、ation 35 Dual watch synchronization 35 Dual watch precedence rules . 36 Air interface encryption 36 Channel A or B operation . 36 Sending short data as a transaction within a circuit mode call 36 Timing change procedure 37 Timing change at changeover or pre-emption . 37 MAC procedures for transfer o
20、f signalling messages . 37 Formation of MAC PDU 37 Addressing 37 Use of air interface encryption 37 Fragmentation and reconstruction . 37 Fill bit addition and deletion . 37 Transmission and reception of messages by layer 2 . 37 Random access protocol . 38 Introduction . 38 Procedures for master DM-
21、MS . 38 Indicating frames available for requests 38 Monitoring frames available for requests 38 Response to pre-emption or changeover request . 39 Response to timing change request 39 Preparing for random access 39 First transmission of request 39 Valid access slots . 40 Waiting for response 40 Subs
22、equent transmission of request . 41 Abandoning random access attempt 41 MAC procedures in traffic mode 41 SDS time remaining 37 Procedures for requesting DM-MS . 39 9 DM-REP layer 2 protocol for a type 2 DM-REP . 41 9.1 Introduction 41 9.1.1 Functions of lower MAC 42 ETSI 9.1.2 9.2 9.3 9.4 9.4.1 9.4
23、.1.1 9.4.1.2 9.4.2 9.4.2.1 9.4.2.2 9.4.2.2.1 9.4.2.2.2 9.4.2.2.3 9.4.2.2.4 9.4.2.3 9.4.3 9.4.4 9.4.4.1 9.4.4.2 9.4.4.3 9.4.4.4 9.4.4.5 9.4.4.6 9.4.5 9.4.5.1 9.4.5.1.1 9.4.5.1.2 9.4.5.2 9.4.5.3 9.4.6 9.5 9.5.1 9.5.1.1 9.5.1.1.1 9.5.1.1.2 9.5.1.1.3 9.5.1.1.4 9.5.1.1.5 9.5.1.2 9.5.1.2.1 9.5.1.2.2 9.5.1
24、.3 9.5.2 9.5.2.1 9.5.2.2 9.5.2.3 9.5.3 9.5.3.1 9.5.3.2 9.5.3.3 9.5.3.4 9.5.3.5 9.5.3.6 9.6 5 ETSI TS 1 O0 396-7 V1.2.1 (2000-1 O) Functions of upper MAC 42 Interface between lower and upper MAC . 42 Usage of DM channel . 42 Basic capabilities of the DM-REP physical layer . 42 DM-REP operation . 42 C
25、hannel structure 42 Channel synchronization . 43 DM-REP states . 43 DM-REP state definitions . 44 DM-REP channel surveillance procedures 45 DM-REP channel surveillance when idle on a free channel (i.e. in state 1) 45 DM-REP channel surveillance when idle on a busy channel (i.e. in state 2) . 45 DM-R
26、EP channel surveillance when idle at DM-MS call Set-up 45 DM-REP channel surveillance when active with one DM channel free 46 DM-REP channel monitoring procedures . 46 DM-REP channel surveillance when active during a call . 46 Criteria for changing DM-REP state . 46 DM channel during call set-up wit
27、h presence check . 46 DM channel in occupation during a circuit mode call . 47 DM channel in reservation during a circuit mode call 47 DM channel in occupation during an SDS call . 47 DM channel following pre-emption or changeover acceptance 47 DM-REP presence signal 48 Channel free 48 DM-REP active
28、 with one DM channel free . 48 DM channel in occupation 48 DM channel in reservation 49 DM-REP linearization 49 DM channel following timing change announcement . 47 DM-REP idle on a free carrier (i.e. in state 1) . 48 DM-REP procedures for re-transmission of signalling messages 49 Re-transmission of
29、 signalling messages received from the master DM-MS 50 General procedures 50 Re-transmission of DM-SETUP or DM-SETUP PRES message 50 Re-transmission of other messages in a DSB when not using multi-slot regeneration 51 regeneration . Re-transmission of master DM-MS signalling messages received in a D
30、NB . 51 Call transaction without multi-slot regeneration . 51 Re-transmission of signalling messages received from a slave DM-MS 51 General procedures 51 DM-REP signalling mechanisms 52 Frame countdown procedure . 52 Null PDU 52 Timing change procedure 52 Random access procedures for DM-REP 53 DM-RE
31、P procedures in traffic mode 53 Re-transmission of master DM-MS signalling messages received in a DSB 50 Re-transmission of DM-SDS DATA or DM-SDS UDATA message . 50 Re-transmission of other messages in a DSB during traffic transmission with multi-slot 51 Call transaction with multi-slot regeneration
32、 . 51 Regeneration of additional repetitions on the slave link . 51 Re-transmission of response messages from a slave DM-MS . 51 Re-transmission of random access request 51 Fill bit addition and deletion . 52 Air interface encryption 52 10 PDU descriptions 53 11 Radio aspects of DM-MS for operation
33、with a type 2 DM-REP 55 11.1 Introduction 55 11.3 Radio transmission and reception . 55 11.2 Modulation . 55 ETSI 6 ETSI TS 1 O0 396-7 V1.2.1 (2000-1 O) 11.3.1 11.3.2 11.3.3 11.3.4 11.3.5 11.3.6 11.4 11.4.1 1 1.4.2 11.4.3 11.4.4 1 1.4.5 11.4.6 11.5 11.6 11.7 Introduction . 55 Frequency bands and cha
34、nnel arrangement 55 Reference test planes 55 Transmitter characteristics 55 Receiver characteristics 55 Transmitterkeceiver performance . 55 Introduction . 55 Definitions and general requirements for synchronization of DM-MSs . 56 Radio sub-system synchronization . 55 Timebase counters 57 Requiremen
35、ts for the frequency reference source of DM mobiles . 57 Requirements for the synchronization of a slave DM mobile . 57 Channel coding and scrambling . 57 Channel multiplexing for DM operation through a type 2 DM-REP . 57 Radio sub-system link control 58 Synchronization requirements for a master MS
36、operating on channel B 57 12 Radio aspects of a type 2 DM-REP 58 12.1 Introduction 58 12.2 Modulation . 58 12.3 Radio transmission and reception . 58 12.3.1 12.3.2 12.3.3 12.3.4 12.3.4.1 12.3.4.2 12.3.4.3 12.3.4.3.1 12.3.4.3.2 12.3.4.3.3 12.3.4.3.3.1 12.3.4.3.3.2 12.3.4.3.4 12.3.4.3.5 12.3.4.4 12.3.
37、4.5 12.3.4.6 12.3.4.7 12.3.5 12.3.6 Introduction . 58 Frequency bands and channel arrangement 58 Reference test planes 58 Transmitter characteristics 58 Output power . 58 Power classes 58 Unwanted conducted emissions 59 Definitions . 59 Unwanted emissions close to the carrier . 59 Unwanted emissions
38、 far from the carrier . 59 Discrete spurious . 59 Wideband noise . 59 Unwanted emissions in the non-transmit state 59 Unwanted emissions during the Linearization CHannel (LCH) 59 Unwanted radiated emissions 59 Radio frequency tolerance . 59 RF output power time mask 59 Transmitter intermodulation at
39、tenuation . 59 Receiver characteristics 60 Transmitterkeceiver Performance . 60 12.4 12.4.1 12.4.2 12.4.3 12.4.4 12.4.5 12.5 12.6 12.7 Radio sub-system synchronization . 60 Introduction . 60 Timebase counters 60 Definitions and general requirements for synchronization . 60 Requirements for the frequ
40、ency reference source of a type 2 DM-REP . 60 Requirements for the synchronization of a type 2 DM-REP 60 Channel coding and scrambling . 61 Channel multiplexing for a type 2 DM-REP 61 Radio sub-system link control 61 Annex A (normative): Timers and constants in DM-MS and DM-REP . 62 History 63 ETSI
41、7 ETSI TS 1 O0 396-7 V1.2.1 (2000-1 O) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in
42、ETSI SR O00 3 14: “Intellectual Propero Rights (IPRs); Essential, or potentially Essential, IPRs notifed to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/www.etsi.ordipr). Pursuant to the ETSI IPR Policy,
43、no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR O00 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technica
44、l Specification (TS) has been produced by ETSI Project Terrestrial Trunked Radio (TETRA). The present document is part 7 of a multi-part deliverable covering the Technical requirements for Direct Mode Operation (DMO), as identified below: Part 1: “General network design“; Part 2: “Radio aspects“; Pa
45、rt 3: Part 4: Part 5: “Gateway air interface“; “Mobile Station to Mobile Station (MS-MS) Air Interface (AI) protocol“; “Type 1 repeater air interface“; Part 6: “Security“; Part 7: Part 8: “Type 2 repeater air interface“; “Protocol Implementation Conformance Statement (PICS) proforma specification“.
46、ETSI 8 ETSI TS 1 O0 396-7 V1.2.1 (2000-1 O) 1 Scope The present document defines the Terrestrial Trunked Radio (TETRA) Direct Mode Operation (DMO). It specifies the basic air interface, the inter-working between Direct Mode (DM) groups via repeaters, and inter-working with the TETRA Voice plus Data
47、(V+D) system via gateways. It also specifies the security aspects in TETRA DMO, and the intrinsic services that are supported in addition to the basic bearer and teleservices. This part applies to the TETRA Direct Mode Repeater (DM-REP) air interface and contains the specifications, where applicable
48、, of the physical, data link and network layers according to the IS0 model. The specifications contained herein apply to a DM-REP as a stand-alone unit supporting two calls on the air interface (type 2 DM-REP). They also cover the operation of a Direct Mode Mobile Station (DM-MS) with a type 2 DM-RE
49、P. NOTE 1: The specifications for a Direct Mode RepeatedGateway (DM-REP/GATE) combined implementation are provided in ETS 300 396-5 5, together with the specifications for a Direct Mode Gateway (DM-GATE). NOTE 2: The specifications for a DM-REP as a stand-alone unit supporting a single call on the air interface (type 1 DM-REP) are provided in EN 300 396-4 41. The protocol for a DM-MS operating with a type 2 DM-REP is specified in clauses 5 through 8, 10 and 11. Much of this protocol is defined in the form of a “delta document“ relative to the specifications provided in ETS 300 396
