7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
1/35
www.huawei.com
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved.
m !nter"ace and#adio Channels
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
2/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age2
Contents
1. Overview
2. $rocessing o" %oice &ignal
'. #adio Channel
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
5/35
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
6/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age*
Contents
1. +verview
2. Processing of Voice Signal
'. #adio Channel
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
8/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age-
Analog/igital Conversion
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
10/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age10
Channel Coding
!kbit/s!kbit/s20 bits(F3)20 bits(F3)
2 bits(#3)2 bits(#3)
244 bits(F3)244 bits(F3) 2.2kbit/s2.2kbit/s
5.kbit/s5.kbit/s
((A/DA/D))
2020msms
8"#$%!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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
11/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age11
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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
15/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age1*
4re5uency Hopping
Frequency
1 0
Frame
1
1 2
1 !
1 4
Time
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
16/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age1
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.
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
18/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age20
Contents
1. +verview
2. $rocessing o" %oice &ignal
3. Radio Channel
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
19/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age21
.re"en'&
00(H?
12/3ms
BP
S#it
Time
4rame and Channel
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
20/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age22
32107654321
$hysical Channel o" LogicalChannel
0
+i11erent
mess'e
tyes
Logicalchannel
P*ysic, C*nne,
Logicalchannel
Logical
channel
LogicalchannelLogicalchannel
TDMA F3AM
200"
577 s
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
21/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age2'
8bit 4 sync*ronousbits
! encryte+
bits!bit 8.25bit
Tail bit Tail bit Guard intervalData
Guard interval
!bit 42bit !bit 8.25bit
Tail bit Tail bitData
!bit ! encryte+bits
! encryte+
bits!bit 8.25bit
Tail bit Tail bit Guard intervalDataData
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&
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
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 Guard interval
3urst
!bit 57 encryte+ bits 57 encryte+ bits !bit 8.25bit
Tail bit Tail bit Guard intervalDataData
2bit
Trainin !e"uence
Frame !tealin #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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
25/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age2
3AC# CCC#
Common
c*nne,
&DCC#
&ACC#FACC#
TC#/F
TC#/#
DCC#
TC#
De+icte+
c*nne,
plin< Logical Channel
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
26/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age2-
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
AECH
&/CCH
&/CCH
TCH
4ACCH
De+icte+ mo+e
-+,e mo+e
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
27/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age2
26-frame multi-frame
TC$%F&F'CC$%F&('CC$%F )#ull*rate TC$+
TC$%$&F'CC$%$&('CC$%$ ),al#*rate TC$+
51-frames multi-frameFCC$&(C$&BCC$&CCC$ )main BCC$+
FCC$&(C$&BCC$&CCC$&(DCC$%4&('CC$%4 )combined BCC$+
BCC$&CCC$ )e-tended BCC$+
(DCC$%.&('CC$%. )main (DCC$+
$hysical Com;ination o" LogicalChannel
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
28/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age'0
&tructure o" @ain 3CCH1 multi-frame !1"#$% &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:
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
29/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age'1
&tructure o" Com;ined3CCH 1 multi-frame !1"#$% &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
1 multi-frame !1"#$% &rames' 23!.3(ms 7+lin)
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# /A;&ACC#< 3;3AC#< -;-D:
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
30/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age'2
&tructure o" Logical ChannelCom;ination 4rame@ain &/CCH
1 multi-frame !1"#$% &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
1 multi-frame !1"#$% &rames' 23!.3(ms 7+lin)
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:
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
31/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age''
&tructure o" Logical ChannelCom;ination 4rameTCH
T;TC#
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
32/35
Copyright 2010 Huawei Technologies Co., Ltd. All rights reserved. $age'(
0 1 2 32044 2045 204 204!
0 1 2 3 4" 4# 504!
0 1 24 25
0 1 24 25 1 4# 500
0 1 4 5 !2 3
T$
3
T$
3
%&
"'25T$ Tail bitT$
3T$3
%&"'25
%& %uard eriodT$3
T$3
%&"'25
T$3
T$3
%& "'25
5" in*ormation bits2 training
se+uences5" in*ormation bits
Constant bit 142
In*ormation bit 3# ,-tended training se+uence 4 In*ormation bit 3#
.ync/ronous se+uence 41 In*ormation bit 3
ormal burst ($)
Fre"uenc correction bur!t )FB+
.ync/ronous burst (.$)
Access burst (A$)
1 ,er #rame204. !uer*#rame!271564.TD' #rame! )3 ,our! 2. minute! 53 !econd! and 760 milli!econd!+
1 suer*rame132TMA *rames ('12 seconds)
1 multi*rame2TMA *rames (120ms) 1 multi*rame51TMA *rames (30013ms)
1TMA *rame" timeslots (12024'15ms)
1 timeslot15'25 bit duration (1520'5!!ms)(1 bit duration 4"133'"us)
$CCCCC.CC
TC.ACCT6ACC
4rame
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
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
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
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
Fey Technical in m !nter"ace
7/21/2019 1- Oma310000 Gsm Radio Interface Issue2.20
35/35
T,ank ou,uaeicom