CU TRC CHUNG CA TRM BTS ALCATEL

Tin+kha+khanh

BI BO COGii thiu cu to s lc 1 trm BTS l th no ta hnh dung

Trc ht ta xem hnh dng thc t ca n:

Ta thy trong hnh c cc tm panel mu trng phn ra 3 hng khc nhau gi l sector ca anten .anten sector cng l anten, ni chnh xc th n l anten nh hng. Vi loi BTS dng 3 sector th mt anten ph 120 , nu l BTS dng 6 sector th mt anten ph 60 .ni chung tu thuc vo vng ph ca anten m lp t hay nhiu sector.Ta thy tng u l anten dng cho GSM bng tn 900MHZtng th 2 anten dng cho 3G (UTMS)hnh nh ca 1 sector:

cu to bn trong ca 1 sector

hoc l theo kiu ny:

CU TRC CA MT TRM THU PHT GC BTSCu trc ca mt trm thu pht gc (BTS)

Bao gm mt chc nng iu khin mt trm gc (BCF: BS Control Function) v t 1 n 16 my thu pht (TRX: Transceiver) chc nng iu khin trm gc thc hin nhim v qun l phn mn v iu khin cc chc nng khai thc v bo dng trong trm gc.

My thu cha b lc thu lc tn hiu nhiu v ly ra tn hiu thu hu t, sau tn hiu thu c bin i vo trung tn b bin i h tn ri a n x l bng gc thu ( my thu khng i tn tn hiu c a thng n khi ny). x l bng gc thu tn hiu c ly mu v lng t bi b ADC.

B cn bng x l mo m gy ra do truyn a tia.B gii iu ch ly ra lung s v a n n khi phn knh. khi ny c n nh cc phn khc nhau ca lung s n cc khe thi gian v cc knh logic khc nhau tng ng vi cc MS khc nhau.

B CODEC knh gii m knh lung bit thu c cc knh logic khc nhau v quyt nh nu l knh bo hiu th gi n khi bo hiu cn nu l s liu hay ting th gi n CODEC ting.CODEC cng thc hin v pht hin v sa li.Nu li khng sa c th khung hng b loi b. C th c hai trng hp i vi CODEC ting:

1. CODEC ting c t ngay ti BTS th s liu ting c chuyn i vo tc 13kbps.

2. Nu n c t BSC th bo hiu trong bng c b sung thnh 16kbps trc khi pht n BSC giao din Abis.

CODEC ting thc hin chuyn i lung s 13kbps vo 104kbps sao vo 64kbps ng ln. ng xung 64kbps c chuyn i 13kbps ri c a n CODEC knh.

Khi bo hiu giao din logic gia mng v cc MS cho cc bn tin iu khin.Rt nhiu bn tin bo hiu c truyn trong sut qua BS, cc bn tin ny c i qua CODEC knh n MS trong trng hp ny BTS khng c nhim v no khc ngoi vic sp xp ng cc s liu ny giao din Um.Mt s cc bn tin BTS a n khi iu khin x l. Cc bn tin ny bao gm: Mt m ha v nhy tn.Cc bn tin khai thc v bo dng ch a n chc nng iu khin v chng khng lin quan g n hot ng bnh thng ca MS.

Khi iu khin thc hin cc nhim v iu khin bn trong BS trn c s cc bn tin khai thc v bo dng a n t BSC.Tt c cc bn tin ny c a qua giao din Abis

Chc nng ca khi lp khun cm b sung thm cc chui hng dn v cc bit ui cho cc khi con c m ha t CODEC knh.Sau khi ghp knh thc hin sp xp cc cm vo khe thi gian tng ng v tng trm di ng. Khi iu ch thc hin iu ch tn hiu vo sng mang v tuyn v y l qu trnh tng t nn cn c b DAC.

My pht c cc b lc ra loi b cc tn s gy nhiu cho cc dch v v tuyn khc N cng thc hin iu khin mc cng sut ra ty theo nhm cng sut ca BS v nu iu khin cng sut c thc hin BS th c th thit lp mc cng sut khc nhau cho tng khe thi gian.

B tng hp m bo cung cp tn s cho cc phn khc nhau ca BTS thng thng b ny c ng b vi ng h ca BSC.i khi c th c ng h ring

1/ CU TRC CA TRM BTS ALCATEL

H thng BTS gm c cc khi chc nng chnh sau: + SUMA+ TRE+ AN

Chc nng ca tng khi trong BTS

1/ CHC NNG CA KHI SUMA:

- Qun l link truyn dn Abis (ln n 2 giao din Abis). -To xung ng h cho tt c cc modul BTS -Thc hin chng nng vn hnh v bo dng cho BTS -Qun l ghp cc d liu TCH, RSL, OML, QMUX -iu khin chc nng AC/DC khi chng c tch hp bn trong BTS -iu khin ngun (dung lng, in p, nhit ) 2/CHC NNG CC KHI TRONG TRE:

A. TRED H thng TRED chu trch nhim v phn s ca TRE: + X l iu khin v bo hiu, n chu trch nhim qun l cc chc nng O&M ca TRE. +Ghp knh, nhy tn, mt m v gii mt m. + M ho. + Gii iu ch (DEM).B. TREA iu ch + iu khin v bin i cao tn phn pht + ng b phn pht + Bin i trung tn phn thu. + ng b phn thu + Gii iu ch trung tn + TRE PA board bao gm b khuch i cng sut, n m nhim khuch i cng sut tn hiu cao tn bi. C. TREP: Cung cp ngun cho TRE (DC/DC)

3/ Chc nng ca khi ANC Modul ny bao gm 2 cu trc ging nhau, mi cu trc bao gm: Antenna: n c chc nng l pht sng ra mi trng v tuyn v thu sng t my di ng pht n. Filter: Lc b tn hiu khng cn thit.Mt khi duplexer: dng kt hp hai hng pht v thu mt antenna.Mt khi LNA: khi ny c chc nng khuch i tn hiu m antenna thu c ln mc ln cho TRE c th x l c.Hai khi Spliter: khi ny c chc nng tch tn hiu thu ca 2 TRE.WBC: (Wide band combiner) b ny c chc nng kt hp hai ng pht li vi nhau i trn cng mt ng n b duplexer. Thc t ta ch dng b ny khi ta dng hn 2 TRX trn cng mt sector, nu khng dng kt hp th ta phi g cu ra v kt ni trc tip vi duplexer m khng thng qua b WBC.Khi qua b WBC tn hiu s b suy hao l 3.3dBm.8 CU HNH TRM BTS1. Khi ng phn mm v kt ni vo t BTSStart -> Programs -> BTS-Terminal release B9 -> BTS-Terminal release B9User/Group name: UPGRADPassword: : SUMSUPClick Logon.

Ti ca schnh n nt kt ni.Hay n F2.hoc ta c th kt ni bng cch chn:Menu File- Connect/Disconnect

2. Ti phn mm cho BTS:Chn file : + Master file dng: bm*saq**.MSF+ CPF file dng: 00o*aq**.DDL+ CODA file : mc nh.

3. Chn tn s sng mang cho cc TRE

4. t a ch QmuxVo Commissioning -> Edit Qmux Address, xut hin ca s sau:

5/. n nh sector:

Trong trng hp cc card TRE ti trm s dng card TWIN th s xut hin thm bng TWIN TRE Module Configuration, khi Click chn Dual TRE. Nu trm va s dng card TRE n v card TWIN th chn Dual TRE i vi card TWIN v Single TRE i vi card TRE n6/. Khi to cc sector:Mc ch: khi ng tt c cc khi trong BTS.Trong qu trnh khi to, xut hin bn tin ca s sau:

7. Kim tra cp v tuyn RF:Mc ch: kim tra cp RF c kt ni ng gia TRE vi ANC, m bo tn s pht ng cho mi sector.Thc hin:

8. Thit lp v kim tra cc cnh bo ngoi:Mc ch: kim tra v n nh cc cnh bo ngoi tu chn.* n nh li cc cnh bo ngoi:+ Thc hin:

- Remote Inventory (Application Part).Kim tra trng thi ca qut:Thc hin:Ca s "Fan test" xut hin.

10. Thit lp thi gian tt cho mt vi khi ca BTSThc hin: ging mc 7.Chn: UT_ACDC_BCB ***Click: Upload.Click: Application PartNhp thi gian cn thit lp vo trng : Power Down Timer.

11. o t s sng ng VSWR:Mc ch: o kim tra t s sng ng VSWR trn ng truyn n ngten.Thc hin:Ca s "VSWR Measurement/ Threshole Definition" xut hin.

12. o cng sut:Mc ch: o cng sut pht ca tng TRE trong BTS.Thc hin: Kt ni my o cng sut (my Bird) vo tng ANC. Chn Ca s "Output power Test" xut hin.TRE Number: chn TRE tng ng ang c ni vi my o.Click "On" o trn tt c cc khe thi gian (TS).Click "Start".Xem gi tr cng sut o c trn my o, ghi li gi tr o.Click "Stop" kt thc o vi TRE o.

13. Kim tra u loop BTSMc ch: kim tra lung Abis v kim tra dy u ra DDF tt hay khng.Thc hin:Ca s "Station Unit Test" xut hin+ Chn "internal Loop" v click nt Start kim tra loop bn trong.Qu trnh x l v kt qu th hin trong trn ca s sau:

+ Chn "external Loop" v click nt Start kim tra u loop phm DDF. Qu trnh xy ra nh sau: Ch cho n khi xut hin thng bo sau

14. Kt thc Commissioning:Mc ch: hon thnh qu trnh commissioning, lu li kt qu kim tra trong qu trnh commissioning, tt cc khi trong BTS.Thc hin:Ca s End Commissioning xut hinCa s "BTS terminal for Window" xut hin.Sau khi BTS t ng reset, mn hnh xut hin bng thng bo v qu trnh commissioning:Lu li file ny bng cch : Menu File- Save hay Save AsTch hp trm BTS vo h thng 1. Kim tra cc tham s truyn dn:Mc ch: thit lp a ch Qmux, n nh khe thi gian cho Qmux, OMU, knh lu lng TCH nhm to s tng thch khi vn hnh trm BTS t h thng qun l OMC-R.Thc hin:Ca s "SUM board configuration" xut hin.Trn trng Abis Mapping: n nh khe thi gian v nibble cho Qmux (TS1, nibble0), knh bo hiu OMU (TS2), knh lu lng TCH.Chn tc bo hiu cho knh OMU.Click Transmit xc nhn qu trnh n nh.Click "Close" ng ca s.Ci t a ch Qmux:Thc hin:Ca s "SUM initial Settings" sut hin.Qmux address (decimal): nhp a ch Qmux theo thit k.Environment: chn cu hnh BTS.Click Transmit xc nhn thng tin nhp.Click ""Close"" ng ca s. 2. Cc bc tin trnh tch hp trm BTSSau khi thc hin tt c cc tin trnh Commissioning ta tin hnh tch hp ni n BSC. Bao gm cc bc sau: a. Kim tra v u ni lung PCM 2M t DDF ca BTS n DDF ca truyn dn (quang/viba)Lu : dng LED kim tra TX v RX ca mi lung trn tng phin, u TX (trn DDF ca BTS) vo RX (trn DDF ca truyn dn) v RX (trn DDF ca BTS) vo TX (trn DDF ca truyn dn). b. Kim tra OML LED trn card SUMA: phi ON (sng vng, khng chp) c. Gi in v OMC-R ti d liu cho trm d. Sau khi ti xong, trm s pht sng. Tin hnh gi th cuc gi ti trm chc chn cc TRE u hot ng ttn RSL, OP: sng vngn BCCH: sng vng (nu TRE mang tn s BCCH)n TX: s sng vng khi thc hin cuc gi trn TRE

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_1350631523.ppt

KIEN TRUC C S CUA TRE

TRED

TREA

TREP

PSI

RFI

CLKI

BSII

BCB

PSWITCH

LEDS

DEBUG

RCD

CUI

I2CA

_1350654629.ppt

1. CAU TRUC CHUNG CUA TRAM BTS ALCATEL

He thong BTS gom co cac khoi chc nang chnh sau : + SUMA + TRE+ AN

KIEN TRUC CAC KHOI CHC NANG CUA HE THONG BTS

CLOCK

TRANS

OMU

SUM

TRE

AN

Abis

BTS-TE

chi nhanh

_1350629686.ppt

Transmission & Clock

O&M

RI

BSIISWITCH

2 Mbit/s

2 Mbit/s

2 Mbit/s

XBCB

BCB

MMI

Abis 1

XCLOCK

External interface

Internal interface

CLKI

BSII 0,1

KIEN TRUC SUMA