3G-NODE3G-NODE-B MIGRATION TOETHERNET BACKHAUL
January 6, 2012
BB UNIT
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Introduction At present , Node-Bs are using TDM backhaul for the
connectivity with the RNC. The bandwidth used are nXE1 where n
varies from 3 to 12. In order to provide higher bandwidth to
customers, we need to migrate to Ethernet backhaul. Currently,
there are 1126 Node-Bs and 13 RNCs. Out of 1126 Node-Bs, 699 are
working on OFC.
January 6, 2012
Agenda
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Advantages and challenges Advantages Ethernet can provide higher
bandwidth . Cheap and better economy of scale. Efficient transport.
Challenges Lacks simple and reliable synchronization functionality
of TDM. Solution IEEE 1588 PTP for synchronizationJanuary 6, 2012
Agenda 3
3G- NETWROK DETAILS
January 6, 2012
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3G3G-Line Diagram-Data Diagram1+1 GE 4 GENode-B
RNC
SGSN
GGSN
FE 100 Mbps
Unchannelised STM-1. To be upgraded to match with the Ethernet
backhaul upgradation.
January 6, 2012
NME-1
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InterfacesInterfaces-Node B and RNC SFPs are required to support
FE optical at Node-B end. There are 13 RNCs with 3 different types.
GE port which will be made available by vendor are:A4 A3 A2 3 Nos
of GoU Boards 2 Nos of GoU Boards 1 No of GoU Board 6+6 GE 4+4 GE
2+2 GE
Synchronization requirement will be met M/s Huawei supplied IEEE
1588 server. This will be used to distribute synch signals through
Ethernet backhaul.January 6, 2012 Agenda 6
RNC-Node- DetailsRNC-Node-B Details-1
Sl No1 2 3 4 5 6
RNC LocationCBE-SBC(A4) SLM-MEY(A3) DPI-MAINE10B(A2) ERD-TE(A3)
TR-DTAX(A3) MAELLIS#1(504)( A2) MAELLIS#2(505)( A2)
Serving SSACBE, CNR SLM DPI ERD TR MA
# of Node-B on OFCCBE:99, Ooty:7,CNR:4 SLM:57,NAM:10
DPI:9,HOS:10,KRI:8 ERD:36,TUP:51 TR:68,ARY:2,PER:2,KAR:13,PDK:10
MA: ?? , THENI:8
7
MA
KKL:2, 5,MA: ?? , DDG:15
January 6, 2012
Agenda
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RNC-Node- DetailsRNC-Node-B Details-2Sl No8 9 10 11 12 13
RNC Location Serving SSAVLR-TE(A2) TNJ-TE(MC)(A2) KKD-DTAX(A2)
TT-DTAX(A2) TVL-MW(A2) PY-TE(A2) VLR TNJ,KMB KKD TT,VGR TVL,NGC
CDL,PY
# of Node-B on OFCVLR:23,TV MALAI:8
TNJ:22,TIRUVARUR:6,,KKL:2,KMB:14,Nagai:7 KKD:13,SVG:4,RMN:6, RMM:1
TT:29,VGR:7, SVK:4 TVL:27,NGC:15,KK:2 PY:28, CDL:12, VLP:3
A4: 3 GoU Boards, 6+6 A3: 2 GoU Board, 4+4 A2: 1 GoU Board,
2+2
January 6, 2012
Agenda
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RNC andTier1/2 Location Details-1 DetailsSl No RNC Locat
ionCBESBC SLMMEY DPIMAINE10B ERDTE TRDTAX MAELLIS# 1(504) MAELLIS#
2(505)
Servin g SSACBE, CNR SLM DPI
Tier1 Location
Capacity of RPR RING
1 2 3
CBE-CENTRAL SLM-SVPT DPI-MAIN E10B
10G 10G No RING
4 5 6
ERD TR MA
ERD-TE TR-DTAX
10G 10G
7
MA
MA-ELLIS NAGAR(T2)
10G
January 6, 2012
Agenda
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RNC andTier1/2 Location Details-2 DetailsSl No RNC Locat
ionVLR-TE TNJTE(MC) KKDDTAX TTDTAX TVLMW PY-TE
Servin g SSAVLR TNJ,KMB KKD TT,VGR TVL,NGC CDL,PY
Tier1 Location
Capacity of RPR RING
8 9 10 11 12 13
VLR-TE TNJ-TE(MC) KKD-DTAX TT-DTAX TVL-DTAX PY-TE
10G 1G No RING No RING 10G 10G
January 6, 2012
Agenda
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BB- NETWROK DETAILS
January 6, 2012
BB UNIT
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BB AGGREGATION NETWORK-1 NETWORKSSACBE#1
RPR RING10G
T1 LocationCBE-CENTRAL CBECENTRAL KURICHI
Tier2 LocationsPEELA MEDU GANAPAT HY THUDIYA LUR SBC GE: Thondam
uthur
CBE#2 CNR CDL
10G NO RING 1G
CBE-MAIN Ooty CDL-TE NEYVELI Vilupura m
January 6, 2012
NME-1
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BB AGGREGATION NETWORK-2 NETWORKSSADPI ERD KKD KMB
RPR RINGNO RING 10G NO RING 1G
T1 LocationDPI-TE ERODE-TE KKD KMB
Tier2 Locations
Perundurai
Bhavani
ADUTHURAI
SRINAGAR COLONY
January 6, 2012
NME-1
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BB AGGREGATION NETWORK-3 NETWORKSSAMA
RPR RING10G
T1 LocationMA-TALLAKULAM MATALLAKULAM KK NAGAR
Tier2 LocationsEAST MASI VILLAPURAM ELLIS NAGAR
NGC PY
10G(But No RING) 10G
NGC-TE PY-TE
COLACHEL OKP
NGC-TE VILLIANUR THIRU CHITRA AMBALAM AMMAPET LAWSPET
SLM TNJ TR
10G 1G 10G
SVPT-TE TNJ TR-CNT
MEYYANUR KARANTHAI THILLAI NGR
SALEM TOWN MED COLLEGE TR-MGG
TR-SRGM
TR-CANT
January 6, 2012
NME-1
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BB AGGREGATION NETWORK-4 NETWORKSSATVL
RPR RING10G
T1 LocationTVL-TE PALAI
Tier2 LocationsMELAPALYA M
TT
NO RING
TT-TE
VGRVLR
1G10G
VGR-TE VLR-TE
SIVAKASI SANTHAIVASA L ARANI
SATUR POLUR CHETPET WANDIWASH THIRUVETTI PURAM
RANIPET
KATPADI
January 6, 2012
NME-1
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INTERFACE DETAILS
January 6, 2012
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InterfacesInterfaces-3Ga) FE ELECTRICAL OR b) FE OPTICAL SFP
NODE-BW/L 850nm, FE 1310nm(FE over STM-1) MODE,Line Rate MM,2.125G
SM,STM-1 TX Pwr(dbm) -9.5 to -2.5 -15 to -8 RX Sens(dbm) -17 -31
Range 0.5km 15Km Connector LC-SC LC-SC
W/L 1310nm,GE
MODE,Line Rate SM,1.25G
TX Pwr -9 to -3
RX Sens -20
Range 10km
Connector LC-SC
RNC
GE OPTICAL SFP
January 6, 2012
NME-1
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InterfacesInterfaces-BroadbandInterface W/L MODE TX Pwr(dbm) RX
Sens( dbm)
GE: GE-LH-40 UTSTARCOM 1XX0878700-H(as seen in Vellore)
Range
Connector
RPR Tier 1/Tier2
GE FE
1550nm 850nm
SM MM
1-40Km 100 m1000m
LC LC
FE: FE-FX-PHYUTSTARCOM 1XX0924906-F(as seen in Vellore)
Availability of SFPs to be checked
Interface
W/L
MODE
TX Pwr(dbm)
RX Sens( dbm)
Range
Connector
GE* FE
1550nm 850nm
SM SM
20Km 500m
OCLAN
FE: 155Mbps,2Km,850 nm Rodevices make (as seen in Vellore)
*4 ports of GE can be made as Electrical also
GE: 1.25Gbps,30Km,1550nm Rodevices make (as seen in Vellore)
January 6, 2012
NME-1
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InterfacesInterfaces-TRANSMISSIONInterface W/L MODE TX Pwr(dbm)
RX Sens( dbm) Range
WTD RTXM 139-400 WHTD 004201 155m,15Km,1310nm-SMESFP(as seen in
Vellore)Connector
CPE-8FE optical FE electrical 1310nm SM
15KM -
LC
Availability of SFPs to be checkedInterface W/L
MODE
TX Pwr(db m)
RX Sens( dbm)
Range
Connector
GE
1000 Base LH(1500nm/ 1550nm) 1310nm
SM
LC
FE optical FE electrical
SM -
15Km
LC
MADM-16
FIBER XON 1310nm 155m SFP(as seen in Vellore)
FTTH-ONT
January 6, 2012
NME-1
4 FE electrical
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OPTIONS AND CHALLENGES
January 6, 2012
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Various Options and its challenges-1 challengesRiding over BB
Aggregation Ring i.e RPR Ring. RPR are mostly intra city rings. The
rings are not available in all SSAs and very few of them are 10G.
Already, NME-University(155 Mbbs), GPON/GEPON, WiMaX,
IPTAX,IPTV,VPN use this ring for transport. This is apart from the
DATAONE Traffic the purpose for which the ring has been designed
originally. Some Tier2 switches do not support FE interfaces. The
availability of SFPs are very limited.January 6, 2012 Agenda 21
Various Options and challenges-2 challengesCapitalizing on FTTH
services :GPON and GEPON based FTTH services are available at
following locations only.Location Coimbatore City Tirupur City
Salem City Trichy City Vellore City Madurai City Pondi City
Technology GPON GPON GEPON GEPON GEPON GEPON GEPON OLTs 35 01 01 02
01 02 01
January 6, 2012
Agenda
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Various Options and challenges-3 challengesUsing the combination
of MADM-16 Rings with CPE-8. SFP availability limited. Using the
combination of FTTH and CPE-8. Using the combination of Tier2 and
CPE-8. SFP availability to be checked. Using E1-FE converter /WDM
splitter.
January 6, 2012
Agenda
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SCENARIOS POSSIBLE-1 POSSIBLEUsing RPR Ring
Node-Bs co-located with RPR Tier1/Tier2. Node-Bs Nearer to
Tier1/Tier2: Drive distance of SFP and availability of fibre pair
are critical. If not WDM splitter may be used. Node-Bs which are
built-Up to Nearest Tier1/Tier2 station using CPE-8 sytems : Use
1310 nm SFP at Tier1/Tier2end.
January 6, 2012
Using FTTH ONU-s which have FE electrical. Using the combination
of FTTH and CPE-8: Use FE electrical interfaces available at both
ends. .Agenda 24
SCENARIOS POSSIBLE-2 POSSIBLEUsing the MADM-16 Rings
Node-Bs co-located with MADM-16 terminal: Use FE electrical
available at both ends. Node-Bs which are built-up to the nearest
MADM-16 Station by using CPE-8 Systems: Use FE electrical available
at both ends.
Using the Aggregation Switch : Built media upto Aggregation
switch which should be located at RNC end. Using E1-FE converter
/WDM splitterJanuary 6, 2012 Agenda 25
DIRECT CONNECTIVITY USING SFP If Tier 1 or Tier 2 are located
within the drive distance of SFP and spare fibre is available from
Node-B location to Tier1/2 location, 1310nm SFP at Node-B end can
be used. Please ensure 1310 nm SFP at Tier1/2 end which may be
available spare from CPE-8/MADM-16 systems.January 6, 2012 BB UNIT
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CONNECTIVITY USING CPE-8 system If Tier 1 or Tier 2 location is
used as Built-up stations for distant end NodeBs (using CPE-8
systems), put the 1310nm SFP at Tier 1 or Tier2 and provide
connectivity.
January 6, 2012
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USING MADM RING MADM-16 Ring Nodes can also be used to carry FE
traffic from CPE-8/Node-Bs. MADM terminal in the ring which is
colocated at RNC end can also be used to aggregate FE to GE.
January 6, 2012
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AGGREGATION SWITCH Aggregation switch can be deployed at RNC
location for aggregating Node-B traffic in FE interfaces and then
make it as GE towards RNC.
January 6, 2012
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ISSUESISSUES-1 Node-Bs generate about 3X14.4 ~ 50Mbps traffic.
Hence, riding over RPR ring shall be attempted only in 10G ring
locations(8) viz CBE,ERD,MA, PY,SLM,TR,TVL and VLR. (CBE no FE I/F)
FTTH is available at the cities of CBE,TUP,VLR,SLM,PY,TR and MA.
Node-Bs at CBE may be connected using GPON as there are 35+ OLTs
and are of protected configuration. Though FE/GE ports are
available in BB/TX nodes, very few SFPs are available. Those too,
are required for upcoming BB expansion project.January 6, 2012
Agenda 30
ISSUESISSUES-2 It is not clear whether SFPs will be made
available to all Node-Bs. RNC interfaces, both uplink and downlinks
shall suitably be upgraded. To derive the max benefit, all the
connectivity in the chain shall be augmented. Replaced CPE-21 shall
be properly reused. ODF/FDF,Patch cords, connectors, SM-MM
convertor(modal conditioning patch cords) etc are required
depending on the site conditions.January 6, 2012 Agenda 31
ISSUESISSUES-3Synchronizations to be ensured; otherwise call
will drop.(No handover with adjacent cell possible ) RNCs located
at CBE,TNJ,TT,TVL and PY serve adjacent SSA also. In that scenario,
separate 1+1 GE interface to be allocated at RNC end for connecting
the adjacent SSA Node-Bs. The present traffic of MADM-16 Ring shall
be studied before attempting to use it.
January 6, 2012
Agenda
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CASE STUDY-PY
January 6, 2012
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RNC-CONNECTIVITYRNC-CONNECTIVITY-PY(LOGICAL)
1310,GE,SM,LC RNC ODF
1550,GE,SM,LC TIER 1
In the case of PY SSA, both RNC and Tier 1 are co-located in the
same floor. One ODF was also availabe in the MSC SWITCH ROOM which
is used for interconnection. 1+1 GE interfaces available in both
RNC and Tier1 are used for interconnection. Though wavelength is
different, it will work since the receiver in both ends will
normally be Wideband but the range will be limited to the lower of
the two.
January 6, 2012
NME-1
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PY MADM RPR-RNC-LOGICALLSP NNR
RBN
MADM RING 1
MUP
ENR
MADM RING 2
OKP
TKM
ARK PY FE MADM RING 3 PY T1 T2 VIN
PY MAIN RNC PY GE GE T1 PY GE T2 LSP RPR T1/T2 FE PY
KET AVE MADM RING 5 MTP
KIU
VIN MKM
BHR
TCM
T2
T2
OKP
January 6, 2012
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CO-LOCATED NODE-B(WITH Tier 1 or 2)850nm,FE/GE,MM,LC Node-B
850nm,FE,MM,LC Tier 1 or 2 MM PATCH CORD
January 6, 2012
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OTHER NODE-Bs
Pl refer to the Ann-1(Excel sheet)
January 6, 2012
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THANKSTRANSMISSION UNIT BSNL-TAMILNADU
CIRCLEhttp://www.bsnl.co.in [email protected]
January 6, 2012
THE END
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