Dmr vs Tetra

5/25/2018 Dmr vs Tetra

1/19

R A S...

H: V P N, 8 20128 M : .. ..

T. 02.36514205 FA/V 1782242408 R. CCIAA M N 1728248 P.I./C.F. 04135130963

DMR versus TETRA

systems comparison

Version 1v2


2/19

ENB26 DMR TETRA 12. 07/09/2009 2 / 19

Index

......................................................................................................... 4A ................................................................................................................................................. 4A ............................................................................................................................................................. 6 ............................................................................................................................................................... 7

............................................................................................................................................10C ....................................................................................................................................................................... 10S ...................................................................................................................................................... 12

P ......................................................................... .................................................... ............ 13C ................................................................. ........................................................ ......... 14G IT ........................................................................................................................................................................ 14

..........................................................................................................................................................14F ........................................................................................................................................................................ 14F S ............................................................................................................................................... 15A .................................................................................................................................................................... 15A ..................................................................... ........................................................... 15O .............................................................................................................................................................. 16R ...................................................................................................................................................................... 16

..........................................................................................................................................................................17T ...................................................................................................................................................................... 17B ................................................................................................................................... 17N ..................................................................... ............................................................ 17M ........................................................ ............................................................... ........................................ 18


3/19

ENB26 DMR TETRA 12. 07/09/2009 3 / 19

ABA

P

. N , ?

T : TETRA, DMR, P25, PMR

TETRAPOL. T TETRA DMR E

( ).

T

. S

, (

). H,

.

I : TETRA

DMR , TETRA

. A TETRA 3 5 DMR . T

( , , ...) DMR

. T TETRA

DMR.

T TETRA . I TETRA RF

, .

DMR 6.25 KH/CH .

T TETRA . W TETRA

22/ ? P

(UMTS, GPRS, WFI, WMA ).

A : TETRA DMR

.

TETRA

. L ,

. DMR

.

A , TETRA DMR

. I , DMR

.


4/19

ENB26 DMR TETRA 12. 07/09/2009 4 / 19

A AB A B A ()

The need of a professional mobile radio system

N (GSM)

. A

.

D ( ). T

. I

0.5 ( 5 10)

GSM .

A , ;

, .

D E , , ,

.

Analog to digital PMR

D , T,

PMR . T

,

. E FM PMR ,

:

;

( ); ;

:

o , ;

o ;

o ;

o ID PTT;

o ;

o ;

o / ;

o IP ;

o ;

o ;o / / ;

;

TCP/IP .

B , , :

/ . I ( ) . T

.

. W RF , HI

FI .

N .

M :


5/19

ENB26 DMR TETRA 12. 07/09/2009 5 / 19

TE TR RA (TETRA)

D M R (PMR)

D P M R (PMR)

P 25 (P25 APCO25)

TETRAPOL

T TETRA , 4 25KH ,

/ . TETRA /4 DQPSK

. T

( 2M/). T

" "

. A E TETRA

.

T DMR (ETSI TS 102361) 12.5KH

. T TETRA (1 CH/6.25KH)

. T ,

TETRA, " " . T , RF

. T

. T

/ / (.. +

). F " " ,

() " "

.

TX CH1

TX CH2 +

TX CH1+CH2

2 conventional channels

2 DMR channels

Group 1

Group 2

Group 2Group 1

freq 2

freq 1

TS 1 TS 2

Samefrequency

. 1: .

T PMR 6.25H F D M A

(FDMA) . T 1

. W 1 , RF .

T 12.5KH . D

PMR, .

frequency

Analog dPMR Analog

12.5KHz12.5KHz

45-50dB

. 2: .


6/19

ENB26 DMR TETRA 12. 07/09/2009 6 / 19

D , E

12.5KH .

T APCO25 (P 25)

N A . R

, P25 .

T P25 . T N A,

A, S R.

P 1 12.5 H ,

C 4 FM (C4FM) 9.600 /. I I M E

/ 7.2 (FEC ).

P 2 FDMA / TDMA

4800 6.25 H . T CQPSK

. I

CQPSK . T

4800 .

A , P25 , , , .APCO25 E, .

T TETRAPOL F 90 ITUR W P 8A. I (GMSK)

TETRA DMR 10KH . T

TETRAPOL F D M A (FDMA) 12.5 H.

T 8 / G M

S K (GMSK). S E . EADS

. T ,

.

O .

TETRA in brief

TETRA E T S I (ETSI S EN 300

392). T TETRA

.

T /4 DQPSK ( ). T ,

TETRA . I ( ) ,

( ). T 36K/ 4

(TDMA = T D M A). D TDMA ,

TETRA 58 .

T ACELP , SGS T,

4.567 /. T FEC 7.2 / 17/18

(1 18 ). T 2.4 /,

, , 28.8B/

.

T T D F D D .

TETRA . T

RF ,

. T

(T C) () . T

T C . T


7/19

ENB26 DMR TETRA 12. 07/09/2009 7 / 19

. T

.

T , TETRA, RF

. T TETRA

.

T TETRA R 2 : 83

RF

500 / 150KH

DMR in brief

DMR (ETSI TS 102 361 ) , ETSI

PMR . T DMR PMR

, ,

, .

T R A DMR ,

, PMR DMR ,

( ):

FM ;

4FSK , DMR ,

9600 .

F ,

PMR DMR .

DMR . A ,

, , .

A/D

data

audio

Vocoder

Sync

protocol

Digital

TX CH1

CH

2

CH

1

CH

2

CH

1

CH

2

CH

1

CH

2

Tempo

I/Odata

Compressed

audio

. 3: .

A/ TDMA (T D M A)

12.5 KH . T / ,

(). T .


8/19

ENB26 DMR TETRA 12. 07/09/2009 8 / 19

CH1

CH2

CH1

CH2

CH1

CH2

CH1

CH2

Group 1 Group 2

Time

CH2

Frequency

CH1

7.5KHz

CH4

CH3

7.5KHz

12.5KHz

Two contemporaryand indipendentcommunications onthe same frequencycarrier

30ms

. 4: / A .

DMR

. DMR

1CH/6.25KH, TETRA

. O ( )

2 CH RF ,

.

F, DMR

. I 12.5KH

/.

.5: A .

T 4FSK (F S K),

PMR . I

, .

T . T

:

,

,

(C )

. . 6: .

T

0 5 KH.

T RF DMR

( ).

T DMR

,

12.5 KH .

. 7: .

DMR ,

: DMR .

N DMR .

CH2Frequenza

CH1

7.5KHz

CH3

7.5KHz

12.5KHz

Time

RF signal

Frequency

Central frequency(not transmitted)

00 01

+1,944 kHz

+0,648 kHz

1011

-1,944 kHz

4FSK

7K60FXE


9/19

ENB26 DMR TETRA 12. 07/09/2009 9 / 19

RF field / distance

Quality

AnalogDMR

20dB SINAD

Area of greater

benefit of DMR

12dB SINAD

. 8: / A .

T DMR . A

.M :

A

=> E

F =>

A

=> I

T RF N =>

,

E . T

/C O

.

T

. T

( ).

T

,

.

.

fcfc

S

M

S

S

S

Backbone links

between base stations

Single site cell

coverage

Overlap area

Simulcast

big cell

f1

f1

f1f1

f1

MMaster

base station

SSlave

base station


10/19

ENB26 DMR TETRA 12. 07/09/2009 10 / 19

A A

Radio frequency aspects

T . F RF (E.R.P.) ,

, R .

T R . N

R

(..

)

( ).

T

110B

DMR 105B TETRA.

TETRA

. T

. T

,

, , . A

18B R

(. 87B). T

. T

9 10 . 9: A B 420 10 . .

T TETRA 20K,

R .

DMR

. A

. T

,

.

T

( )

(

) . I

B R .

T 40K .

, , !

. 10: B 420 10 .

0 10 20 30 40 50 60 70 80120

100

80

60

Km

dBm

87

81

p 420 10, i,( )

p_a 420 10, 40, i,( )

105

horizon

ri

hrx 1.5= m RX height htx 150= m TX height horizon 55.546= Km

Starting cell

re-selection

Suggested overlap RF f ield -87dBm

RX threshold -105dBm

Suggested service RF f ield -81dBm

B

420 10 A

0 10 20 30 40 50 60 70 80120

100

80

60

Km

dBm

100

90

p 420 10, i,( )

p_a 420 10, 78, i,( )

110

horizon

ri


overlap

Suggested overlap RF f ield -100dBm


Suggested service RF f ield -90dBm

B 420 10


11/19

ENB26 DMR TETRA 12. 07/09/2009 11 / 19

T RF . TETRA 380 400 MH

,

410 430 MH

, 10 MH

. R TETRA

806870 MH . A

VHF

( )

TETRA.

T

( )

VHF UHF

TETRA.

I TETRA

RF

RF .

T DMR 5W

1W ()

TETRA ( 6B !).

. 11: A .

T RF ( RF ) DMR +5B R +6/7B RF

TETRA . T 1012 B VHF TETRA

DMR. I ( )

4

TETRA

() .

A , DMR

,

.

U RF

. T

R DMR

,

.

N RF

TETRA

( 3K TETRA

UHF, 9K DMR VHF)

DMR.

. 12: A .

, , , , ()

.

portable to base station path

-

DMR VHF versus TETRA UHF

treshold_DMR 110:= treshold_TETRA 105:=

hrx 150= m RX height htx 1.5= m TX height

20 40 60 80 100120

110

100

90

80

70

DM R

TETRA

Km

dBm

treshold_TETRA

treshold_DMR

p 160 5, i,( )

p 420 1, i,( )

horizont

ri

TETRA UHF

DMR VHF

More than doubling the distance

Direct mode portable to portable path

-

DMR VHF versus TETRA UHF

treshold_DMR 110:= treshold_TETRA 105:=

hrx 1.5= m RX height htx 1.5= m TX height

1 3 5 7 9 11 13 15120

110

100

90

80

70

DMR

TETRA

Km

dBm

treshold_TETRA

treshold_DMR

p 160 5, i,( )

p 420 1, i,( )

horizont

ri

TETRA UHF

DMR VHF

About triple the distance


12/19

ENB26 DMR TETRA 12. 07/09/2009 12 / 19

RF ,

C I C/I B,

. T DMR RF .

CH1+CH2

2 DMR channels

Group 2Group 1

TS 1 TS 2

Same 12.5KHzfrequency

6.25KHz/CH

. 13: .

T () 2 . T TETRA

:

CH1+CH2+

CH3+CHCont.

3+1 TETRA channels

Group 2Group 1

TS 1 TS 2

Same 25KHz

frequency

Group 3

TS 2

Signaling

channel

8.3KHz/CH

. 14: A .

DMR . A TETRA 4 25 KH . O

, 3 3 . I

DMR 2 12.5 KH .

4/25 , 3/25 .T

(C/I) TETRA

19 B DMR

( )

12B . I

TETRA

RF

19B R

. I , 7 B TETRA

( RF

6

9B/

).

C

,

.

. 15: A (/) .

Not re-usable

areasDesired system

coverage area

S

M

S

S

S

Backbone links

between base stations

Single site cell

nominal coverage

Overlap area

Desired system

coverage area

f1

f2

f3f4

f5

High C/I protection

e.g. 19dB TETRA

Low C/I protection

e.g. 12dB DMR

S

M

S

S

S

f1

f2

f3f4

f5

S

M

S

S

S

f1

f2

f3f4

f5

Not re-usable

areas


13/19

ENB26 DMR TETRA 12. 07/09/2009 13 / 19

N , (DMR )

.

A . T

.

T C/I (C A

I) .F DMR

60B

@12.5KH. TETRA 40B @25KH! T

TETRA

. T TETRA

(

).

T 15

TETRA RF

25K .

. 16: A B

420 10 .

T 25K TETRA . I PMR

. A TETRA ,

TETRA .

A , TETRA 3+1

() 25KH

. A 12.5KH ,

. W DMR ,

,

GPS , ,

,

. 17: A .

. .

T TDMA . T

TDMA .

DMR 2,5 PA . A 1

N B .

T 1 , , 150 BS

. I TETRA 0,4 , 58K . T

M S

58 .

frequency

Analog/DMR DMR

12.5KHz12.5KHz

frequency25KHz

40-45dB

60dB

Analog/DMR

TETRA

25KHz

TETRA ADJ+TETRA ADJ-

0 10 20 30 40 50 60 70 80120

100

80

60

Km

dBm

87

81p 420 10, i,( )

p_a 420 10, 40, i,( )

p_a 420 0.001, 25, i,( )

105

horizon

ri


Starting cell

re-selection

Suggested overlap RF field -87dBm


Suggested service RF field -81dBm

B

420 10 A

Adjacent

channel


14/19

ENB26 DMR TETRA 12. 07/09/2009 14 / 19

T . T

,

.

H

. I . T , .

F RF . I

. T

. T . T TETRA

DMR . I TETRA 710

3040 DMR.

DMR TETRA. D

TETRA , TETRA 8

15 DMR. T TETRA . DMR

, , .

T TETRA ( ) 1015W/

0.81.2W/ DMR . F 1

5 , TETRA 12

CO2 1 DMR!

L

().

(5 1 ) 1.000 2 !System aspects

B //

, , , ID PTT, IP ,

N TETRA

. TETRA , , DMR

.

T DMR ETSI , . M MOTOTRBOTM

, (255 )

.

T DMR ETSI .

T ETSI ; . D

(200507) ETSI TETRA (199095), DMR

.


15/19

ENB26 DMR TETRA 12. 07/09/2009 15 / 19

TETRA . TETRA ;

1 . I

GSM . I

,

:

! C ( ).

TETRA

.

TETRA .

DMR . T

DMR

. W DMR :

, (IP/ ), (IP/UHF/ )

. T

. A ,

.

T IP , DMR

. N ( ) . T

,

. T ,

, , , .

DMR , .

A

N TETRA N A . DMR , .

I N A P25

. DMR

.

A

O

. T

.

DMR . U

( , FM, 12,5KH ) , DMR

/ .

A DMR

.

N DMR

( ) . I ,

. N

, , ,

.

O ,

DMR () .

DMR

.


16/19

ENB26 DMR TETRA 12. 07/09/2009 16 / 19

TETRA . TETRA

() .

M TETRA

. T

. T TETRA

.

N

. DMR

, TETRA UHF .

TETRA . T

.

DMR . N (J 2009) M MOTOTRBOTM

SELE V/5PDMR DMR. M DMR

(T, H, S).

ETSI ; DMR

:

ETSI

ETSI

ETSI

T M MOTOTRBOTM

AMBE II+TM

(A MB E)

D V S. T AMBE

D V S . A

( ) PMR, ICOM

P25P2 TETRA 2.

M . P

M . B M

.

N

ETSI.

T . W MTBF

.

B TETRA DMR (

).

TETRA DMR

. DMR TETRA

.

A , DMR ( TETRA) .


17/19

ENB26 DMR TETRA 12. 07/09/2009 17 / 19

D DMR , ,

, . I TETRA.

Costs

A , . T

/ . F DMR

TETRA , DMR, . T , , .

T TETRA , , DMR. B

TETRA ( 10 2 DMR)

. M

, MOTOTRBO DMR

, .

P, DMR , DMR TETRA

.

B

N M DMR , . N DMR

2

. T TETRA 10 DMR .

A . I DMR

: , (), ,

( C+TM

M). TETRA . T

, DMR TETRA ,

N (

DMR TETRA):

DMR TETRA

IP 1N 10N

M () 1N 10N

T (C+TM

) 1,5N 10N

S 4N 10N ( )

F ?? 10N

1: A .

T HW TETRA . T TETRA , . M,

TETRA .

DMR . T IP

(


18/19

ENB26 DMR TETRA 12. 07/09/2009 18 / 19

T : (.. , TV)

, ,

, (TCP/IP M/) , ,

, , .

E ( , , , )

.

I () , , ,TCP/IP M/ .

N , (1/2 TETRA), DMR

( ).

I TETRA

( ).

.

A .

T . H

. T TETRA

DMR ( ).

DMR "" TETRA

. I DMR:

1. T , RF (

)

2. T ( DMR )3. T DMR ( , 19 3TU

)

DMR . T /DMR

,

. T .

TETRA .

M UHF () . DMR (.. R

A SELE) DMR ,

. TETRA .

C . DMR . I

. I ,

. TETRA , , TETRA

.


19/19

ENB26 DMR TETRA 12. 07/09/2009 19 / 19

T TETRA . T

(, , , , , )

.

T DMR ( , , GPS

, , ...) TETRA . T DMR

TETRA DMR / .

T TETRA ( DMR ) 1/2 1/3

DMR TETRA 3 5 DMR. T

TETRA (, , , , )

.

O DMR, TETRA

. T

E O . T

TETRA : TETRA

?

A , TETRA (

, , ). I , DMR

.

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Dmr vs Tetra