gsm-radio-interface-140720014203-phpapp02.ppt

7/17/2019 gsm-radio-interface-140720014203-phpapp02.ppt

1/35

www.huawei.com

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved.

m !nter"ace and#adio Channels


2/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age2

Contents

1. Overview

2. $rocessing o" %oice &ignal

'. #adio Channel


3/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age'

#adio !nter"ace

Another MSC

HLR/AUC

SMC

PSTN

ISDN

OMC

MS

Um

MS

A-bis

BSC

A

BTS

MSC/VLR


4/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age(

Communication management (CM)

Communication management (CM)

Radio resources management (RR)

Radio resources management (RR)

Mobility and security management

(MM)

Mobility and security management

(MM)

Integrated management

Integrated management

TCH0 TCH1 TCH SACCH TCH! IDL

TCH0 TCH1 TCH SACCH TCH! IDL

M"#ti$r%me

Ph&si'%# #in( #%&er )L1*

D%t% #in( #%&er )L*

Net+or( %,,#i'%tion #%&er )L!*

Hierarchical &tructure o" m!nter"ace

RACH BCCH ACH/PCH SDCCH SACCH TCH .ACCH

CC, SS, SMS

Use LAPDm Protocol


5/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age)

#adio Access Technology

Frequ

ency

Time

Power

Frequ

ency

Time

Power

Frequ

ency

Time

Power

FDMAFDMA

TDMATDMA

CDMACDMA

User

User

User

User

User

User

User

User

Time.DMA

.re"en'&

TDMATime

.re"en'&

CDMA

.re"en'&

Time

Coe


6/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age*

Contents

1. +verview

2. Processing of Voice Signal

'. #adio Channel


7/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age

%oice &ignal $rocessing

((A/DA/D))

2020msms

22.8kbit/s22.8kbit/s

!kbit/s!kbit/s8"#$%!bi8"#$%!bi

tt

!!.8kbit/s!!.8kbit/s

&e'menttion&e'menttion &eec* co+in'&eec* co+in' C*nne, co+in'C*nne, co+in'

-nter,ein'-nter,ein' ncrytionncrytion)) urst 1ormttin' Mo+u,tionMo+u,tion

Tr%nsmission

Voi'e


8/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age-

Analog/igital Conversion


9/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age

&peech Coding

The Enhance Full RateEnhance Full Ratecoding mode is called CELPCELP Code Excited LinearCode Excited LinearPredictive CodingPredictive Coding

The Full RateFull Ratecoding mode is called RPE-LTPRPE-LTPRegular Pulse Excited-LongRegular Pulse Excited-Long

Term Prediction).Term Prediction).

The Half RateHalf Ratecoding mode is called VCELPVCELP((ector-!um Excited Linearector-!um Excited Linear

PredictionPrediction))

!kbit/s!kbit/s20 bits(F3)20 bits(F3)

2 bits(#3)2 bits(#3)

244 bits(F3)244 bits(F3) 2.2kbit/s2.2kbit/s

5.kbit/s5.kbit/s

((A/DA/D))

2020msms

8"#$%!bi8"#$%!bi

tt

&e'menttion&e'menttion &eec* co+in'&eec* co+in'

Voi'e


10/35


Channel Coding

!kbit/s!kbit/s20 bits(F3)20 bits(F3)

2 bits(#3)2 bits(#3)

244 bits(F3)244 bits(F3) 2.2kbit/s2.2kbit/s

5.kbit/s5.kbit/s

((A/DA/D))

2020msms

8"#$%!bi8"#$%!bitt

&e'menttion&e'menttion &eec* co+in'&eec* co+in'

Voi'e

C*nne, co+in'C*nne, co+in'

22.8kbit/s22.8kbit/s45bits(F3/F3)45bits(F3/F3)

228bits(#3)228bits(#3) .4kbit/s.4kbit/s

Block

Coder1:2

Convolutional

Coder


11/35


1 ! 2 3 4 5 666 666 2 2! 2 22 231 ! 2 3 4 5 666 666 2 2! 2 22 23

B

5

136

6

6

23

5

136

6

6

23

106

6

6

20

106

6

6

20

3

16

6

6

2

3

16

6

6

2

1

76

6

6

7

1

76

6

6

7

16

6

6

2

16

6

6

2

4

126

6

6

22

4

126

6

6

22

!

116

6

6

21

!

116

6

6

21

2

1!6

6

6

2!

2

1!6

6

6

2!

6666 6666

B0 B1 B B! B B2 B3 B4

8A9B0: 8A29B1: 8A39B: 8A49B!: 8B9C0: 8B29C1: 8B39C: 8B49C!:8A9B0: 8A29B1: 8A39B: 8A49B!: 8B9C0: 8B29C1: 8B39C: 8B49C!:

.irst inter#e%;in


12/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age1'

%oice 3urst

Ti,Ti,

bitbitTi,Ti,

bitbit

6ur+6ur+

erio+erio+DtDt

DtDt Trinin' sequenceTrinin' sequence

57 encryte+ bits57 encryte+ bits!!

bitsbits8.25 bits8.25 bits2 bits2 bits1

!!

bitsbits57 encryte+ bits57 encryte+ bits 1

((A/DA/D))

2020msms

22.8kbit/s22.8kbit/s

!kbit/!kbit/

ss8"#$%!bit8"#$%!bit

!!.8kbit/!!.8kbit/

ss

&e'menttion&e'menttion &eec* co+in'&eec* co+in' C*nne, co+in'C*nne, co+in'

-nter,ein'-nter,ein' ncrytionncrytion)) urst 1ormttin' Mo+u,tionMo+u,tion

Tr%nsmission

Voi'e


13/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age1(

%oice &ignal $rocessing

33.8 kbit/s

22.8 kbit/s

13 kbit/s

8 kHz13 bits

Transmitting part

Receiving part

Speaker

ReceiverDemodulator

AdaptiveEqualization

De-ciphering

De-interleaving

Channel decoding

Speech decoding

D/A-conversion

TransmitterModulator

Burst formatting

Ciphering

Interleaving

Channel coding

Speech coding

Segmentation

A/D-conversion

Microphone

13 kbit/s

Transmitting part

Receiving part

TransmitterModulator

Burst formatting

Ciphering

Interleaving

Channel coding

D/D-conversion

8 kHz

8 bits64 kbit/s PCM

ReceiverDemodulator

AdaptiveEqualization

De-ciphering

De-interleaving

Channel Decoding

GSM Network

Mobile equipment


14/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age1)

Tr%nsmission e#%& t

Tr%nsmission e#%& t

TA

The mobi#e ,hone sho"#

sen the si


15/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age1*

4re5uency Hopping

Frequency

1 0

(ra'e

1

1 2

1 !

1 4

Time


16/35


Pro,on' bttery ,i1e n+re+uce inter1erence

/T6

/T67 /iscontinuous Transmission &hut o8 the transmission at voice intervals9

+nly transmit &!/ "rames:

The transcoder at the #6 terminal produces com"orta;le noise.

%A/7 %oice Activity /etection

!mplemented ;y the transcoder.

ub ) (ull

#easure'ent


17/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age1-

$ower Control

$rolong ;attery li"e #educe networ< inter"erence

!nclude ;oth uplin< power control and downlin< power control

Level and 5uality are taudicator

BCCH C%rrier is notin;o#;e in ,o+er 'ontro#6

Time

Si


18/35


Contents

1. +verview

2. $rocessing o" %oice &ignal

3. Radio Channel


19/35


.re"en'&

00(H?

12/3ms

BP

S#ot

Time

4rame and Channel


20/35


321076"*321

$hysical Channel o" LogicalChannel

0

+i11erent

mess'e

tyes

Logicalchannel

P*ysic, C*nne,

Logicalchannel

Logical

channel

LogicalchannelLogicalchannel

TDMA F3AM

200"

577 s


21/35


8bit 4 sync*ronousbits

! encryte+

bits!bit 8.25bit

Tail bit Tail bit +uard interval,ata

+uard interval

!bit 42bit !bit 8.25bit

Tail bit Tail bit,ata

!bit ! encryte+bits

! encryte+

bits!bit 8.25bit

Tail bit Tail bit +uard interval,ata,ata

3urst

4 sync*ronous bits

? Access ;urst A37 sed in @& initial access

? 4re5uency correction ;urst 437 sed in "re5uencysynchroniation ;etween @& and 3T&

? &ynchronous ;urst &37 sed in timing synchroniation;etween @& and 3T&

*';it TA come"rom here


22/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age2'

!bit 42 mo+u,tion bits !bit 8.25bit

Tail bit Tail bit +uard interval

3urst

!bit 57 encryte+ bits 57 encryte+ bits !bit 8.25bit

Tail bit Tail bit +uard interval,ata,ata

2bit

Trainin% sequence

(ra'e stealin% -la%

Bormal ;urst B3 sed to carry the in"ormation o" the trac channel and the control

channel eDcept "or #ACH

/ummy ;urst /3

sed in transmission o" =lling "rames ;y 3T& at timeslots when there

is no in"ormation delivered

3urst rate come"romE1)*.2)F0.)G-


23/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age2(

Bro%'%st 'ontro# 'h%nne#

)BCH*Contro# 'h%nne#Common 'ontro# 'h%nne#

)CCCH*

Voi'e 'h%nne#

)TCH*

.CCH SCH BCCH TCH/.ACH RACH SDCCH .ACCH

SACCH

TCH/HPCH

Common 'h%nne#

)CCH*

Dei'%te 'h%nne#

)DCH*

Lo


24/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age2)

FCC#

&C#

CC#

PC#

A6C#

CC#

CCC#

Common

C*nne,

&DCC#

&ACC#

FACC#

TC#/F

TC#/#

DCC#

TC#

De+icte+

C*nne,

/ownlin< Logical Channel


26/35


se o" Logical Channels

4CCH

A,,octe si'n,in' c*nne,

Power9on &erc* 1or 1requency correction burst

&erc* 1or sync*ronous burst

:isten to t*e system in1ormtion

Monitor 'in' mess'e

&en+ ccess burst

&et u t*e c,,

A,,octe oice c*nne,

Conerstion

3e,ese t*e c,,

-+,e mo+e

&CH

3CCH

$CH

#ACH

ACH

&/CCH

&/CCH

TCH

4ACCH

De+icte+ mo+e

-+,e mo+e


27/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age2-

26-frame multi-frame

TC/((ACC/(ACC/( -ullrate TC

TC/(ACC/ACC/ !al-rate TC

51-frames multi-frame(CCCBCCCCC 'ain BCC

(CCCBCCCCC,CC/*ACC/* co'bined BCC

BCCCCC e$tended BCC

,CC/4ACC/4 'ain ,CC

$hysical Com;ination o" LogicalChannel

T& 2, (, *


28/35


&tructure o" @ain 3CCH1 multi-frame !1"#$% &rames' 23!.3(ms #ownlin)

*rou+ *rou+1 *rou+2

*rou+3,

same

as

*rou+2'

*r+u+!

Channel & S / C/ & S C/ C/ 00 & S C/ C/

&rame

ume

r

4 1 2-! 5-6 141

1

12-

1!

15-

1624-36

4

1

2-

!

5-

6!4

1 multi-frame !1"#$% &rames' 23!.3(ms 7+lin)

Channe

lR R R R R R R R R R R R R R00R R R R R

&rame

ume

r

4 1 2 3 ! 5 8 ( 6 14 11 12 13-5 8

(

6

!

4

F;FCC#< &;&C#< ;CC#< C;CCC#< 3;3AC#< -;-D:


29/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age'0

&tructure o" Com;ined3CCH 1 multi-frame !1"#$% &rames' 23!.3(ms #ownlin)

*rou+ *rou+1 *rou+2 *rou+3 *rou+ *r+u+!

Channel & S

9

C

9

& S

C

9

C

9

& S

#

4

9

#

1

9

& S

#

2

9

#

3

9

& S

%4

9

%1

9

Channel & S

9

C

9

& S

C

9

C

9

& S

#

4

9

#

1

9

& S

#

2

9

#

3

9

& S

%2

9

%3

9

&rame

umer4 1

2-

!

5-

614 11

12

-

1!

15

-

16

24 21

22

-

2!

25

-

26

34 31

32

-

3!

35

-

36

4 1

2

-

!

5

-

6

!4


Channel #39 R R %29 %39 R00R #49 #19 R R #29

Channel #49 R R %49 %19 R00R #49 #19 R R #29

&rame

umer4-3 ! 5-6 14-13 1-35 38-4 1- ! 5 8-!4

F;FCC#< &;&C#< ;CC#< C;CCC#< D;&DCC# 5A;&ACC#< 3;3AC#< -;-D:


30/35


&tructure o" Logical ChannelCom;ination 4rame@ain &/CCH

1 multi-frame !1"#$% &rames' 23!.3(ms #ownlin)

Channel#4

9

#1

9

#2

9

#3

9

#

9

#!

9

#5

9

#8

9

%4

9

%1

9

%2

9

%3

9

Channel#4

9

#1

9

#2

9

#3

9

#

9

#!

9

#5

9

#8

9

%

9

%!

9

%5

9

%8

9

&rame

umer 4-3 -8

(-

11

12-

1!

15-

16

24-

23

2-

28

2(-

31

32-

3!

35-

36

4-

3

-

8

(

6

!

4


Channel%!

9

%5

9

%8

9

#4

9

#1

9

#2

9

#3

9

#

9

#!

9

#5

9

#8

9

%4

9

Channel

%1

9

%2

9

%3

9

#4

9

#1

9

#2

9

#3

9

#

9

#!

9

#5

9

#8

9

%

9

&rame

umer4-3 -8

(-

1112 13 1

1!-

1(

16

-

22

23-

25

28-

34

31-

3

3!-

3(

36-

2

3-

5

8-

!4

D;&DCC#< A;&ACC#< -;-D:


31/35


&tructure o" Logical ChannelCom;ination 4rameTCH

T;TC#


32/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age''

! " #"$$ "$% "$& "$'

! " # $ $ %$'

! "$ "%

! "$ "% ! $ %

! $ % '&" #

T*

#

T*

#

+P

"%T*- Tail bitT*

#T*#

+P"%

+P- +uard .eriodT*#

T*#

+P"%

T*#

T*#

+P &"%

% in/ormation bits"& training

se0uences% in/ormation bits

Constant bit !$"

In/ormation bit # 12tended training se0uence &$ In/ormation bit #

Sync3ronous se0uence $! In/ormation bit #&

4ormal burst (4*)

(requenc correction burst (B

Sync3ronous burst (S*)

Access burst (A*)

1 !er -ra'e=20*4 suer-ra'es=271"6*4T,#A -ra'es 3 !ours8 24 'inutes8 "3 seconds and 760 'illiseconds

! su.er5/rame6!#"&TDMA /rames (&!" seconds)

! multi/rame6"&TDMA /rames (!"ms) ! multi/rame6%!TDMA /rames (#&7!#ms)

!TDMA /rame6 timeslots (!"7"&6$&!%ms)

! timeslot6!%&"% bit duration (!%7"&6%''ms)(! bit duration- $7!#6#&us)

*CC8CCC8SDCC8

TC8SACC87T9ACC8

4rame


33/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age'(

PCH RACHACH

Do+n#in( CCCH U,#in( CCCH

Ho+ to etermine the tot%# CCCH reso"r'es o$ the 'e##@ Ho+ to

%##o'%te ACH %n PCH re%son%b#&@

Con=guration o" Common ControlChannel


34/35

Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age')

&ummary

!n this course, we have learned7 $rocessing o" %oice &ignal

#adio Channel in m !nter"ace

Iey Technical in m !nter"ace


35/35

T!ank ou999.!ua9ei.co'

Documents

gsm-radio-interface-140720014203-phpapp02.ppt