SPI_Metod
.pdf31
5
5.1.: .
5.2.:
1..
(TMN).
3.GSM TMN PLMN.
4.GSM.
5.GSM.
6..
5.3..
5.3.1.
GSM -
( . 1).
(GSM NM)
:
1.GSM NM
; .
2.GSM NM ,
(PLMN),
.
3.GSM NM ,
PLMN, .
4.GSM NM ,
, , .
5.GSM NM ,
.
6.GSM NM
, ,
, .
7.GSM NM , ,
.
GSM
(OSI) (ISO),
,
,
.
(TMN)
GSM ,
.
GSM TMN
32
( TMN) ( PLMN)
.
TMN ,
PLMN
, TMN
PLMN ( , SS 7,
ISDN). , GSM TMN ,
PLMN .
TMN
, PLMN. . 5.1,
GSM TMN PLMN OSF
(OS), MF
DS. TMN,
TMN
PLMN (NEF),
(WSF).
TMN .
5.1 – GSM TMN PLMN.
, . 1
.
, .
GSM TMN
PLMN (
33
), ,
.
,
,
5.3.3. GSM
TMN
(OS),
:
-;
-;
-;
-;
-.
GSM TMN
. ( TMN
OS), (
OS.
-
, ,
(NE)
.
:
1);
2);
3)( ) ;
4);
5).
,
.
GSM TMN
(DCF) GSM TMN
(DCN) (LCN).
DCN GSM TMN OSI.
. ,
, .2 Q3 .
TMN.
, SS 7
Q3.
.25
(PC PDN).
(LCN) PLMN
TMN Q2
A-bis .
GSM (NE) PLMN, , MSC, HLR, BSS .
: - (MEF), .
(ME) MEF;
34
-(SEF), .
, , , . (SE)
SEF.
,
.
5.3.4. GSM
,
(DCN) (LCN).
,
.
,
.
TMN
GSM TMN . 5.2.
5.2 – GSM TMN.
, , ,
SS N7 .25.
SS N7 ( )
Q.795.
.25
.
SPS 6 GSM
09.02, SS N7 :
-MSC HLR PLMN;
-;
-;
35
- " ".
TMN PLMN TMN
SS N7, PLMN, .25
( ) Q.513.
.25 ( .25 - SS N7).
BSS MSC ( -
, . 5.3) SS N7.
5.3 – BSS MSC.
(SCCP) 2
.224 2, SCCP 3 .224 0.
GSM .25 .
BTS BSC (GSM A-bis ) Lap-D
.
PLMN, BTS, .25 .
TMN Q3 ,
PS PDN.
PLMN TMN
02-11 .
36
GSM,
. 3.
, GSM TMN
( 3)
, (
) Q.795 ISO (CMIS)
(FTAM), .3.
, GSM TMN,
,
SS N7 .25. , ,
PLMN, .
5.4..
1..
2.( ).
5.5.:
1..
2..
3..
4.GSM:
) ;) ;
) GSM TMN;) .
5.GSM:) TMN;
) TMN PLMN TMN;
) , GSM TMN.
6.GSM
TMN.
7.GSM.
1.., . : .
. - : , 2002.
2.: / . , . , .. , ; . . . - .: , 2003.
3.. , . , . . .- .:
, 2001.
4.. . .- .: .2000.
37
6
6
IS-95 (CDMAONE)
6.1.: IS-95 (cdmaOne).
1.IS-95.
2..
3..
4..
5..
.
7..
CDMA QUALCOMM.
(Telecommunications Industry Association):
•IS-95 - ;
•IS-96 - ;
•IS-97 - ;
•IS-98 - ;
•IS-99 - .
CDMA QUALCOMM
800 , |
|
AMPS, N-AMPS D-AMPS |
TIA IS-19, IS-20, IS-54, IS-55, IS-56, IS-88, IS-89, IS-90, IS-553). |
||
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1.25 , |
|
cdmaOne .
12.5 MS BS
BS MS, 10 1.25 .
I
cdmaOne 1...3 ,
,
AMPS ( MS).
CDMA QUALCOMM
. 6.1.
CDMA QUALCOMM
.
.
,
, ,
.
BS 4, MS - 3 .
38 |
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6.1 - CDMA QUALCOMM. |
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, : |
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824,040... 848,860 |
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869,040... 893,970 |
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. : |
±2,5 10-6 |
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± 5 10-8 |
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OQPSK |
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QPSK |
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-3 |
1,23 |
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-40 |
1,5 |
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, |
1,2288 |
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1 |
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1 |
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1…7 |
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1…55 |
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1200 |
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4800, 9600 |
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1200, 2400, 4800, 9600 |
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9 |
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9 |
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1/2 |
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6...7 |
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. . , : |
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(3- , 2- 1 - ) |
1,0; 2,5; 6,3 |
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50 |
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± 0,5 |
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-105 |
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-117 |
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(soft handover)
. MS 2
BS.
MS BS
.
( )
MS
BS, .
MS BS,
39
,
.
CDMA QUALCOMM
CELP (code excited linear prediction)
.
cdmaOne
. , GSM, ,
,
215 242-1.
.
6.3.1.
cdmaOne (pilot channel), (synchronisation chaneel), 62 ( . 6.1). 62
(forward traffic channels), 7
(paging channels).
6.1 – .
,
. Wo
) ,
W32 ) – .
62
. ,
(
).
. 6.2, BS
2 .
( 2")
(Wi) 1.2288
. (" 2")
PN1 PNQ (PNpseudonoise) (I)
40
(Q) . ( )
.
64 1.2288 .
6.2 – BS.
Wo ),
PN1 PNQ.
1200 .
(9, 1/2) 2400 .
,
4800 .
,
20 .
, , .
.
4800 .
" "
. ,
:
1.2288 = 64 4 4800
(64 - , ). ,
1.2288 .
CELP 8550, 4000, 2000
800 .
20 .