[123doc.vn] Chu Trinh Cuoc Goi Trong He Thong Gsm

7/24/2019 [123doc.vn] Chu Trinh Cuoc Goi Trong He Thong Gsm

1/22

Company

LOGO

CHU TRNH CUC GITRONG H THNG GSM

Nhm sinh vin: Nguyn Thnh Linh

Nguyn c NamL Trung Kin

Trn Ngc Tn


2/22

Contents

5. Nhn thc thu bao

4. Nghn

3. Tm gi

2. Thit lp cuc gi t thu bao b gi

. Thit lp cuc gi t thu bao ch! gi

". #t m$


3/22

1. Qu trnh thit l! "u#" $%i t&thu' ()* "h+ $%i

Thit l! ,t n-i / tu0n

Nhn th" 2 3t 34

Qu trnh 5n 67nh th/n$ th89n$


4/22



:1; ; ?@"h h*At ,'nh SBCCH

:; Qu trnh 5n 67nh tD" th

:E; Thit l! 3*F "n (n$ (5t 6Jn$ (#

:K; B5u hiu thit l!

:; ?t n-i SCC


5/22

1. Qu trnh thit l! "u#" $%i t& thu' ()*"h+ $%i

Thit l! ,t n-i / tu0n :1;


6/22


Thit l! ,t n-i / tu0n :>; ?@"h h*At ,'nh SBCCH

ISC kiF7 tra bn tin Channel-required EF chK) nh(n 8r khLng

ISC kiF7 tra e7 cN knh SCCH rOi ha% khLngP n'u cN sQ cK) ! knh ch8MS

ISC gi ch8 I5S bn tin channel-activati8nP thi't l() ! ti7er EF E/i ! b48nh(n +ackn8ledge7ent0 t I5SP b48 ch8 I5S sn sDng k>ch h89t knhT Channel-activati8n gU7:

1 ML t knh E/c dVng

1 Wh8ng E=nh th.i

1 Xnh EiYu khiFn cLng suKt ch8 MS vD I5S

I5S khZi t98 tDi ngu%n l) v(t l[P l() gii )h4) tranh chK) XA\7P snsDng ch8 bn tin MS E3u tin trn knh P sau EN gZi ISC bn tin

channel]activati8n]ack ISC sQ dng kh8ng th.i gian b8 v<


7/22


Thit l! ,t n-i / tu0n :; Qu trnh 5n 67nh tD" th

ISC t98 vD gZi I5S bn tin i77ediate]assign]c877and tN7 t^t c4c thLngtin ca channel]activati8nP gU7 sB ngu nhinP sB khung ca MST ISC k>ch khZi

kh8ng th.i gian ch. MS tr l.i

I5S gi ch8 MS bn tin i77ediate]assign7ent trn knh AJCHT MS kiF7tra sB ngu nhin vD sB khung tr8ng bn tin nD%P n'u h/) vi ! tr8ng _ bn tinchannel]request gZi Ei g3n nhKt th6 MS sQ chu%Fn sang knh dDnh ring nD% vD

E`t 5A ca 76nh vD8 value indicate tr8ng bn tin i77ediate]assign7ent


8/22


Thit l! ,t n-i / tu0n :E; Thit l! 3*F "n (n$ (5t 6Jn$ (#

Whung l) E3u tin E/c gi Ei trn knh lD khung XA\7 chu2nP g*ilD set asynchronuos balanced mode . 5rn gia8 din AirP nN thi't l() k't nBi

XA\7 vi I5ST Whung nD% cng cha ni dung l) _

Jii )h4) tranh chK):

MS khZi t98 k't nBi XA\7 vD gi Ei bn tin l) _ tr8ng khung E3u tin ca76nhT I5S gi E'n MS ! b48 nh(n ACW cha ni dung giBng bn tin l) _T 8 ENPch MS nD8 gi tin 7i cN th' nh(n bi't du8 ACW t I5S vD tf k't nBi

@i MS g*i EiP bn tin l) _ gU7:

1 Mt )h3n thLng tin ch r: CM d=ch vL %u c3u P %u c3u c() nh(t v= tr>PCM %u c3u t4i thi't l()P ch sB MS detach

1 M sB nh(n d9ng MS1 Class7ark MS


9/22


Thit l! ,t n-i / tu0n :K; B5u hiu thit l!

I5S gi bn tin establish-indicati8nE'n ISC EF b48 MS E k't nBiT ISC

chK7 dt kh8n th.i gian b8 v

ch thLng tin tr8ng CM vD khZi t98 k't nBiSCC\ vi MSC

:; ?t n-i SCC

ISC gi bn tin SCC\-c8nnecti8n-request E'n MSCT MSC tr l.i bjng bn

tin SCC\-c8nnecti8n-c8nir7T In tin nD% cN thF cha ! %u c3u CM h8`c ! l


10/22


Nhn th" 2 3t 34 5h t?c Class7ark: $i dung ca class7ark " E/c gi tr8ng suBt qu4 tr6nh

thi't l() k't nBi vL tu%'nT 5hLng tin class7ark dVng ch8 EiYu khiFn cLng suKt

ca MS vD cDi 7(t 7T MSC cN thF %u c3u c() nh(t class7ark EF ch^c ch^nthLng tin EGngT

mu4 tr6nh nh(n thfc: $h(n thfc E`c t>nh ca MST WhNa nh(n thfc cha tr8ng

SM dVng tr8ng qu4 tr6nh 7(t 7

M(t 7: MSC %u c3u ISS cDi ch' E 7(t 7 trc khi thLng tin E/c tru%Yn

trn knh SCCH


11/22


Qu trnh 5n 67nh th/n$ th89n$ :8" 1;

Sau khi thi't l() knhP gi;a MS vD 79ng cN ! E.ng b48 hi


12/22


Qu trnh 5n 67nh th/n$ th89n$ :8" >;


13/22


Qu trnh 5n 67nh th/n$ th89n$ :8" ; Pn 67nh ,'nh l8u l8n$

ISC E7 b8 khLng ch9% ti'n tr6nh kh4c ch8 MS vD Kn E=nh tDi ngu%n ch8

knh lu l/ng the8 ! sB thu(t t84n:1 on E=nh thLng th.ng 1 n-call 78diicati8n

1 Chu%Fn gia8 gi;a c4c cell 1 irected retr% + l[ E=nh hng l9i0

1 C4c cell EUng t&7 1 Micr8cells5hLng th.ngP ta dVng thu(t t84n Kn E=nh thLng th.ngT ISC gi; ! bng

danh s4ch c4c knh rOi E/c s^) ') the8 7c nhiu +!pthK)P pca80


14/22


Qu trnh 5n 67nh th/n$ th89n$ :8" E; ?@"h h*At ,'nh l8u l8n$

ISC gi I5S bn tin )h%sical-c8ntet-request EF ch ra cLng suKt vD ti7ing

advance hi


15/22


Qu trnh 5n 67nh th/n$ th89n$ :8" K; Gn ,'nh l8u l8n$

MS thi't l() k't nBi XA\7 ch8 knh lu l/ng

I5S gi ISC bn tin establish-indicati8nP l() chu%Fn 7 vD thu(t t84n )h4thi


16/22

>. Qu trnh thit l! "u#" $%i t&thu' ()* (7 $%i


Nhn th" 2 3t 34 (Ging thu bao gi)

Pn 67nh th/n$ th89n$

IMSI tt)"hBt)"h

# &


17/22

Thit l! ,t n-i / tu0n T3 $%i )$in$

MSC gi bn tin )aging E'n ISC Z c8nnecti8nless 78de vD ba8 gU7:

1 SB nh(n d9ng MS +5MS ha% MS ca MS b= g*i0

1 anh s4ch nh(n d9ng cell

MSC l() ! ti7er EF E/i MS E4) ng bjng bn tin )aging-res)8nse

ISC kiF7 tra bn tin )agingP n'u h/) l< sQ t>nh t84n nhN7 )aging ch8 MS vD5i7e sl8ts CCCH ch8 nhN7 nD%

ISC sQ gi bn tin )aging-c877and E'n tng I5SP ch r 5MS ha% MSPnhN7 )aging vD sB knh

MOi I5S E=nh d9ng thLng tin vD qung b4 bn tin )aging-request trn knh\aging

Whi MS nh(n E/c bn tin )aging EGng vi sB nh(n d9ng ca 76nhP MS sQ gi bn

tin channel-request trn knh RACH E'n I5ST

Sau EN ISS thi't l() k't nBi vL tu%'n nh 7L t Z thu ba8 g*i


h hi l # i &


18/22

Pn 67nh th/n$ th89n$

MSC gi MS bn tin set-u) EiYu khiFn cuc g*i Z l) _P ch ra d=ch vL bearer

vD tele ch8 cuc g*i

MS kiF7 tra bn tin nD%T $'u chK) nh(nP nN sQ gi bn tin call-c8nir7 cha !

thLng sB d=ch vL bearerT

ISS ti'n hDnh Kn E=nh knh vD c8ntet v(t l[T Mt knh v(t l[ E/c Kn E=nhT

MS sQ b48 ch8 user vD gi MSC bn tin c8nnecti8nT MSC gi l9i MS bn tin

c8nnecti8n-ackn8ledge7ent vD k't nBi cuc g*i


> Q h hi l # i &


19/22

IMSI tt)"hBt)"h

MS Attach-etach ch8 )h) 79ng cung cK) nhiYu t>nh nng hn vD s d?ng

tDi ngu%n hi. Qu trnh thit l! "u#" $%i t&thu' ()* (7 $%i


20/22

\aging lD qu4 tr6nh c8ntact vi MST

C4c bn tin )aging E/c )h4t trn CCCHT hng d8nlinkP CCCH 7ang

AJCH vD \CHT

\CH E/c chia thDnh nh;ng knh )hLP 7Oi knh nD% tng ng vi ! nhN7t67 g*i

SB nhN7 t67 g*i vD c4ch t chc knh CCCH tha% Ei vi tng cKu h6nhT MS

bi't c4ch t chc knh CCCH t thLng tin tru%Yn trn ICCH

. T3 $%i !)$in$


21/22

ViWu ,hiXn !)$in$ MSC gi ch8 c4c ISC bn tin )aging vD l() ti7er EF ch. MS E4) ng bjng

bn tin )aging-re)8nseT In tin )aging t MSC cha sB nh(n d9ng cell list "

ISC sQ kiF7 tra " vD t98 bn tin )aging-c877and ch8 c4c I5S lin quan I5S t98 bn tin )aging-request-t%)e- vD gi E'n MS

Whi nh(n bn tin )aging requestP MS sQ gi ! bn tin channel-request E' b^t

E3u qu4 tr6nh Kn E=nh tc th.i

Thu $in 6*An

Whi MS Z ch' E rOiP Rw ch8 )h) MS t^t nguUn b thu vD ti'n tr6nh nh(n

d; li


22/22

Company

LOGO

Than% &ou '

Documents

[123doc.vn] Chu Trinh Cuoc Goi Trong He Thong Gsm