Huawei BTS 3900
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Transcript of Huawei BTS 3900
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Huawei BTS 3900 Overview
Presented by : Md. MoniruzzamanRadio Planning
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BTS 3900
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BTS 3900
• RFU Radio Frequency Unit• GATM GSM Antenna & TMA Control Module • BBU BaseBand processing Unit (CPU)• DCDU Direct Current Distribution Unit
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Overview
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Overview
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Hardware Components
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Logical structure of BTS
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ERICSSON RBS HUAWEI BTS
TRX Evolution
dTRU(2 TRX)2206
dRU(2 TRX)2216
DRFU(2 TRX)
GRFU(6 TRX)
MRFU(6 TRX)3900
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MRFU & BBU
MRFU connection port (6)
Alarm monitoring port
GATM port
MRFU BBU
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Logical Structure of GRFU/MRFU
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Why MRFU (GRFU)
Although GRFU & MRFU support 6TRX ,but MRFU has some additional
advantage
Power sharing support
75 MHz continuous Band support
SDR (Software Defined Radio)
TX diversity
PBT (Power Boost Technology)
4-way receive diversity support
FDR (Frequency Domain Reflectometer )
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Power Sharing
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Larger Band Support
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SDR (Software Defined Radio)
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Advantage of SDR
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GSM/UMTS co-exist
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SCPA vs MCPA
ERICSSON RBS HUAWEI BTS
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Challenges of SCPA
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Benefits of MCPA
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Power output of MRFU
47 dBm
43 dBm
40 dBm
** As common Power Amplifier uses
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Capacity Enhance
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Antenna Reduction
2nd
Cab
3rd
Cab 2nd
Cab
3rd
Cab
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MRFU—BBU Topology
** ERICSSON uses only star topology for dRU---DXU connection.
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Comparison of Topology
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TRU add/del issue
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TRX Board No/Slot No
Board Type
TRX Board Pass No
RXU Name
RXU Chain No
RXU Chain HeadPN
TRX Number
Com/Uncom port
TRX Power Type
Band
Solution
Old Value
New Value
Frequency
Frequency Hopping mode
Cell HSN
Cell TSC
BCCH frequency
Cellwise frequency list(900)
Cellwise frequency list(1800)
Modification reason
BSCSite
Name
Cell Nam
e
Board type
Trx Board Pass No
TRX Numb
er
RXUName
TRX Board No/Slot No
RXUChain No
RXU Chain Head PN
Status
Com/Unco
m port
Trx Power Type
BandSolutio
n
Old value
New value
Frequency
Frequency
HOPPING
Mode
Cell HSN
Cell TSC
MAIOBCCH freque
ncy
Cell wise frequency list(900)
Cell wise
frequency
list(1800)
Information required to add/del TRX
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Information required to add/del TRX
1.Open the LMT.
2.Select BSC name->site name->cell name.
3.Board type is here DRFU.
4. Select the DRFU(alternate name RXU) where the TRX will be add/del.
5.Define the Pass no (logical position of TRX in DRFU) of the TRX.•Pass:0 is the 1st TRX •Pass:1 is the 2nd TRX in a DRFU
6.Define the TRX No (logical TRX No) for TRX add. In LMT only active TRX No is shown. For deleting an active TRX, need to mention the active TRX NO.
BSC Site Name Cell Name Board typeTrx Board Pass No
TRX NoRXU
Name
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Information required to add/del TRX
TRX Board No/Slot NoRXU Chain No RXU Chain Head PN
7.Find the slot/board no of the DRFU(logical position of DRFU in cabinet) which is known as TRX Board/port no.
8.Find the RXU chain no and RXU chain head port no under which the DRFU is configured.
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Information required to add/del TRX
Status Com/Uncom port Trx Power Type Band Solution Old value New value
9. Status-> it means whether to activate or deactivate TRX.
10. Com/Uncom port-> Tx independent(No combining) or combining(Basically defines the send mode).
11. TRX Power type -> Defines the power type according to frequency band. 900 TRX power type=20W1800 TRX power type=18W(for DBS 3900,power type=10W)
12. Band-> Frequency band type (GSM900/GSM1800)
13. Solution-> depends on install TRX value(uncombined/2 TRX combined+1 TRX uncombined/Nothing).In BTS 3900,solution type Nothing is very common.
14. Old value-> install TRX(UL+OL) and active TRX(UL+OL) before TRX add/del.
15. New Value-> active TRX(UL+OL) after TRX add/del.
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Information required to add/del TRX
FrequencyFrequency
HOPPING ModeCell HSN Cell TSC MAIO BCCH frequency Cell wise frequency list(900)
Cell wise frequency list(1800)
16.Frequency-> Planned to be add/del in the case of 900 band.
17.Frequency Hopping mode-> baseband/synth in TRX level.
18.Cell HSN->important for 1800 band. Need to define in TRX level.
19.Cell TSC-> Need to define BCC value of the cell in each of its TRX level.
20.MAIO-> important for 1800 band. Need to define in TRX level.
21.BCCH frequency->BCCH frequency of the cell.
22.Cell wise frequency list(900)-> proposed cell wise 900 frequency list after add/del TRX in the cell.
24. Cell wise frequency list(1800)-> planned to be add/del in the case of 1800 band.
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Glossary
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Thank You
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Q & A ??
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Swapped site BMICH1
BTS 3900
DRFU
BBU