3g node-b migration to ethernet backhaul - power point presentation

April 8, 2023 BB UNIT 1

3G-NODE-B3G-NODE-BMIGRATION TOMIGRATION TOETHERNET BACKHAUL

April 8, 2023 Agenda 2

IntroductionIntroductionAt 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.


Advantages and challengesAdvantages and challengesAdvantages

Ethernet can provide higher bandwidth .Cheap and better economy of scale.Efficient transport.

ChallengesLacks simple and reliable synchronization functionality of TDM.

SolutionIEEE 1588 PTP –for synchronization

3G- NETWROK DETAILS


April 8, 2023 NME-1 5

3G-Line Diagram-Data3G-Line Diagram-Data

Node-B RNC SGSN GGSN

Unchannelised STM-1. To be upgraded to match with the Ethernet backhaul upgradation.

FE 100 Mbps

1+1 GE

4 GE


Interfaces-Node B and RNCInterfaces-Node B and RNCSFPs 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:

Synchronization requirement will be met M/s Huawei supplied IEEE 1588 server. This will be used to distribute synch signals through Ethernet backhaul.

A4 3 Nos of GoU Boards 6+6 GEA3 2 Nos of GoU Boards 4+4 GEA2 1 No of GoU Board 2+2 GE


RNC-Node-B Details-1RNC-Node-B Details-1

Sl No RNC Location

Serving SSA

# of Node-B on OFC

1 CBE-SBC(A4) CBE, CNR CBE:99, Ooty:7,CNR:42 SLM-MEY(A3) SLM SLM:57,NAM:103 DPI-MAIN-

E10B(A2)DPI DPI:9,HOS:10,KRI:8

4 ERD-TE(A3) ERD ERD:36,TUP:515 TR-DTAX(A3) TR TR:68,ARY:2,PER:2,KAR:13,PDK:106 MA-

ELLIS#1(504)(A2)

MA MA: ?? , THENI:8

7 MA-ELLIS#2(505)(A2)

MA KKL:2, 5,MA: ?? , DDG:15


RNC-Node-B Details-2RNC-Node-B Details-2

Sl No RNC Location

Serving SSA

# of Node-B on OFC

8 VLR-TE(A2) VLR VLR:23,TV MALAI:89 TNJ-TE(MC)(A2) TNJ,KMB TNJ:22,TIRUVARUR:6,,KKL:2,KMB:14,Naga

i:710 KKD-DTAX(A2) KKD KKD:13,SVG:4,RMN:6, RMM:111 TT-DTAX(A2) TT,VGR TT:29,VGR:7, SVK:412 TVL-MW(A2) TVL,NGC TVL:27,NGC:15,KK:213 PY-TE(A2) CDL,PY PY:28, CDL:12, VLP:3

A4: 3 GoU Boards, 6+6 A3: 2 GoU Board, 4+4 A2: 1 GoU Board, 2+2


RNC andTier1/2 Location Details-1RNC andTier1/2 Location Details-1

Sl No

RNC Location

Serving SSA

Tier1 Location Capacity of RPR RING

1 CBE-SBC

CBE, CNR

CBE-CENTRAL 10G

2 SLM-MEY

SLM SLM-SVPT 10G

3 DPI-MAIN-E10B

DPI DPI-MAIN E10B No RING

4 ERD-TE

ERD ERD-TE 10G

5 TR-DTAX

TR TR-DTAX 10G

6 MA-ELLIS#1(504)

MA

MA-ELLIS NAGAR(T2) 10G7 MA-

ELLIS#2(505)

MA


RNC andTier1/2 Location Details-2RNC andTier1/2 Location Details-2

Sl No

RNC Location

Serving SSA

Tier1 Location Capacity of RPR RING

8 VLR-TE

VLR VLR-TE 10G

9 TNJ-TE(MC)

TNJ,KMB TNJ-TE(MC) 1G

10 KKD-DTAX

KKD KKD-DTAX No RING

11 TT-DTAX

TT,VGR TT-DTAX No RING

12 TVL-MW

TVL,NGC

TVL-DTAX 10G

13 PY-TE CDL,PY PY-TE 10G

BB- NETWROK DETAILS


April 8, 2023 NME-1 12

BB AGGREGATION NETWORK-1BB AGGREGATION NETWORK-1

SSA RPR RING

T1 Location

Tier2 Locations

CBE#1

10G CBE-CENTRAL CBE-CENTRAL

KURICHI PEELAMEDU

GANAPATHY

THUDIYALUR

SBCGE:

Thondamuthur

CBE#2

10G CBE-MAIN

CNR NO RING

Ooty

CDL 1G CDL-TE NEYVELI Vilupuram

April 8, 2023 NME-1 13

BB AGGREGATION NETWORK-2BB AGGREGATION NETWORK-2SSA RPR

RINGT1 Location Tier2 Locations

DPI NO RING DPI-TE

ERD 10G ERODE-TE Perundurai Bhavani

KKD NO RING KKD

KMB 1G KMB ADUTHURAI SRINAGAR COLONY

April 8, 2023 NME-1 14


RINGT1 Location

Tier2 Locations

MA 10G MA-TALLAKULAM MA-TALLAKULAM

KK NAGAR EAST MASI

VILLAPURAM ELLIS NAGAR

NGC 10G(But No RING)

NGC-TE COLACHEL NGC-TE

PY 10G PY-TE OKP VILLIANUR THIRU CHITRA AMBALAM

LAWSPET

SLM 10G SVPT-TE MEYYANUR SALEM TOWN

AMMAPET

TNJ 1G TNJ KARANTHAI MED COLLEGE

TR 10G TR-CNT THILLAI NGR TR-MGG TR-SRGM TR-CANT

April 8, 2023 NME-1 15


RINGT1 Location

Tier2 Locations

TVL 10G TVL-TE PALAI MELAPALYAM

TT NO RING TT-TE

VGR 1G VGR-TE SIVAKASI SATUR

VLR 10G VLR-TE SANTHAIVASAL

POLUR CHETPET WANDIWASH

THIRUVETTIPURAM

ARANI RANIPET KATPADI

INTERFACE DETAILS


April 8, 2023 NME-1 17

Interfaces-3GInterfaces-3G

NODE-B

RNC

a) FE ELECTRICALOR

b) FE OPTICAL SFP

W/L MODE,Line Rate

TX Pwr(dbm)

RX Sens(dbm)

Range Connector

850nm, FE MM,2.125G -9.5 to -2.5 -17 0.5km LC-SC1310nm(FE over STM-1)

SM,STM-1 -15 to-8

-31 15Km LC-SC

GE OPTICAL SFP

W/L MODE,Line Rate

TX Pwr RX Sens Range Connector

1310nm,GE

SM,1.25G -9 to -3 -20 10km LC-SC

April 8, 2023 NME-1 18

Interfaces-BroadbandInterfaces-Broadband

RPR Tier 1/Tier2

OCLAN

Interface

W/L MODE TX Pwr(dbm)

RX Sens(dbm)

Range Connector

GE 1550nm

SM 1-40Km LC

FE 850nm MM 100 m-1000m

LC

Interface

W/L MODE TX Pwr(dbm)

RX Sens(dbm)

Range Connector

GE* 1550nm

SM 20Km

FE 850nm SM 500m

Availability of SFPs to be checked

*4 ports of GE can be made as Electrical also

FE: FE-FX-PHY-UTSTARCOM

1XX0924906-F(as seen in Vellore)

GE: GE-LH-40UTSTARCOM1XX0878700-H(as seen in Vellore)

GE: 1.25Gbps,30Km,1550nmRodevices make(as seen in Vellore)

FE: 155Mbps,2Km,850 nmRodevices make(as seen in Vellore)

April 8, 2023 NME-1 19

Interfaces-TRANSMISSIONInterfaces-TRANSMISSION

CPE-8

MADM-16

Interface W/L MODE

TX Pwr(dbm)

RX Sens(dbm)

Range Connector

FE optical 1310nm

SM 15KM LC

FE electrical

-

Interface

W/L MODE

TX Pwr(dbm)

RX Sens(dbm)

Range Connector

GE 1000 Base LH(1500nm/1550nm)

SM LC

FE optical 1310nm SM 15Km LCFE electrical

-

Availability of SFPs to be checked

FTTH-ONT4 FE

electrical

FIBER XON1310nm 155m SFP(as seen in

Vellore)

WTD RTXM 139-400WHTD 004201

155m,15Km,1310nm-SM-ESFP(as seen in

Vellore)

OPTIONS AND CHALLENGES



Various Options and its challenges-1Various Options and its challenges-1Riding 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.


Various Options and challenges-2Various Options and challenges-2Capitalizing on FTTH services :GPON and GEPON based FTTH services are available at following locations only.Location Technology OLTsCoimbatore City

GPON 35

Tirupur City GPON 01Salem City GEPON 01Trichy City GEPON 02Vellore City GEPON 01Madurai City GEPON 02Pondi City GEPON 01


Various Options and challenges-3Various Options and challenges-3Using 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.

Using the MADM-16 Rings.


SCENARIOS POSSIBLE-1SCENARIOS POSSIBLE-1Using 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.Using FTTH ONU-s which have FE electrical.Using the combination of FTTH and CPE-8: Use FE electrical interfaces available at both ends..

Using the MADM-16 Rings.


SCENARIOS POSSIBLE-2SCENARIOS POSSIBLE-2Using 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 splitter

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.


CONNECTIVITY USING CPE-8 system

If Tier 1 or Tier 2 location is used as Built-up stations for distant end Node-Bs (using CPE-8 systems), put the 1310nm SFP at Tier 1 or Tier2 and provide connectivity.


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 co-located at RNC end can also be used to aggregate FE to GE.


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.



ISSUES-1ISSUES-1Node-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.


ISSUES-2ISSUES-2It 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.


ISSUES-3ISSUES-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.

CASE STUDY-PY


April 8, 2023 NME-1 34

RNC-CONNECTIVITY-PY(LOGICAL)RNC-CONNECTIVITY-PY(LOGICAL)

RNCTIER 1ODF

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 beWideband but the range will be limited to the lower of the two.

1310,GE,SM,LC 1550,GE,SM,LC

PY MADM –RPR-RNC-LOGICAL


LSP

RBN

TCM

PY MAIN

MADMRING 1

MADMRING 2

NNR

OKP

RPR T1/T2

T1

T1

PY

LSPVIN

PY

OKPT2 T2

T2

T2

MUP ENR

RNC

GEGEGE

PYMADMRING 3 PY

VINBHR

KIU

TKM ARK

MADMRING 5

PY

KET

AVE

MTP

MKM

FEFE

CO-LOCATED NODE-B(WITH Tier 1 or 2)


Node-B850nm,FE/GE,MM,LC

850nm,FE,MM,LC

Tier 1 or 2

MM PATCH CORD

OTHER NODE-Bs

Pl refer to the Ann-1(Excel sheet)


April 8, 2023 THE END 38

THANKSTHANKS

TRANSMISSION UNITBSNL-TAMILNADU CIRCLE

http://[email protected]

3g node-b migration to ethernet backhaul - power point presentation

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