2G-3G Seamless Transport Network

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2G-3G Seamless Transport Network

Top right corner for field-mark, customer or partner logotypes. See Best practice for example.

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EID/K-06:00x Uen Rev PA1 Ericsson Confidential Telkomsel Transport Evolution 2006-10-022

Objectives

Preparing the transport network to handle:– High capacity growth

2G/3G sharing transport network– Multi service application

PDH, SDH, Eth, ATM Efficient traffic handling

– Modern topologies Step by step and smooth modernization Flexibility and scalability

Optimize the usage of installed based network Smooth evolution to all IP transport network Ericsson Mini-Link TN Solution


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Agenda

Current Situation Further Requirement

– 2G/3G sharing transport network– Transport network evolution

Mini-Link TN


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Current Situation


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Networks today– 2E1 per sites– 4E1 link at the end sites, continue

by 8E1,16E1 and STM-1 – Tree and star topology– Long chain still dominant– Traditional LL still acceptable

BSC

4E1

8E1

16E1

STM-1Traditional LL

1-2E1

Current Situation2G Access - Topology


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2G Access network enhancement– Prepare for expansion– 4E1 link at the end sites, continue

by 16E1 link start from 1st hub– Clustering model with ring

topology STM-1– Capacity agile– Traditional LL still acceptable

Overall– Easier capacity upgrade– Easy to adapt the new sites – Improve network quality– More scalable network– Enables flexibility

STM-1 Ring

16E1

4E1

16E1

BSC

Traditional LL1-2E1

Current Situation2G Access – Topology Enhancement


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Current Situation3G Access

Iub is designed as 2-3 E1 per sites Clustering model with STM-1 ring 3G sites are co-located with 2G sites Independent transmission network

(overlaid 2G)

STM-1 Ring

16E1

4E1

16E1

RNC

Traditional LL1-2E1


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Further Requirement


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2G/3G Transmission Sharing

Why– In fact, almost all 3G sites co-located with 2G sites– Reduce CAPEX (in total) to upgrade existing capacity is

cheaper than build a new one– Reduce network complexity– Save tower and transmission floor space– Not to deteriorate network performance the more

microwave link deployed the more frequency interference potential

– Limited resources on frequency– Reduce the complexity to operate the network the more

nodes installed the more complex to operate

Consolidated network plan– 2G and 3G in 1 plan table


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Transport Network Evolution


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GSM (E1)

DCS (E1)

Target peak bit rate for single HSPA user in empty system

(Mbps)

Iub transport protocol

overhead

HSDPA transport efficiency for single

user

control plane + node synch

(Mbps)

Total (Mbps)

2G + R99 1 1 0.384 1.32 0.8 0.416 1.0496 5.14562G + HSDPA 3.6 Mbps 1 1 3.6 1.32 0.8 0.416 6.356 10.4522G + HSDPA 7.2 Mbps 1 1 7.2 1.32 0.8 0.416 12.296 16.3922G + HSDPA 14.4 Mbps 1 1 14.4 1.32 0.8 0.416 24.176 28.272

Transmission Capacity Requirement for

Collocated 2G & 3G (Mbps)

3G2G

Estimated Transport Capacity2G and 3G with HSDPA


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Current Network 2G+3G R99

End-to-end L1

NxSTM-1 Ring

16E1

4E1

16E1

BSC/RNC

Traditional LL1-2E1

2G/3G Access evolution– 2E1 per sites (2G)– 2E1 per sites (3G)– 4E1 link at the end sites, 16E1

link start from 1st hub– For 30 sites/cluster the ring

capacity should be 120E1 (2xSTM1)

– Traditional LL still possible


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Network Evolution 1 2G + 3G with HSDPA 3.6Mbps

2G/3G Access evolution– 2E1 per sites (2G)– 4E1 per sites (3G)– 8E1 link at the end sites,

16/32E1 link start from 1st hub– For 30 sites/cluster the ring

capacity should be 180E1 (3xSTM1)

– Traditional LL not possible

Overall– Bandwidth increase significantly – Bandwidth for 3G >>2G

NxSTM-1, STM-4

16/32E1

8E1

BSC/RNC

Traditional LL6E1?

End-to-end L1


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2G/3G Access Evolution– 2E1 per sites (2G)– 7E1 per sites (3G)– 16E1 link at the end sites, 32E1

link start from 1st hub– ATM aggregation node start

from 1st hub– For 30 sites/cluster the ring

capacity should be ~ 3xSTM1– Reduce bandwidth start from 1st

hub– End to end connection

management L2

NxSTM-1, STM-4

32E1

16E1

BSC/RNC

Traditional LL8E1?

ATM on VC4 or VC12

End-to-end L2


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2G/3G Access Evolution– 2E1 per sites (2G)– 12E1 per sites (3G)– 16E1 link at the end sites– ATM aggregation– GBE & MPLS introduction on the

ring

GBE over NxSTM-1, STM-4

16E1

BSC/RNC

Traditional LL?

End-to-end L2

MPLS


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3G Network Evolution 4 All IP Transport

2G/3G Access Evolution– All IP transport network

Ethernet over 16E1 for end link, over STM1/75E1 start from 1st hub

– Ethernet L2 switching starting from 1st hub

– Public Ethernet LL is possibleATM, Eth

Eth

BSC/RNC

Ethernet LL(public)

MPLS

End-to-end L2

GBE over NxSTM-1, STM-4


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Proposed Network Model

NxSTM-1 Ring

Agile capacity(up to STM-1/75E1)

BSC/RNC/FO hub

Main hub sites

1st hub sitesAgile capacity(up to 16E1)

Avoid long chain Shallower topology Enables flexibility

BSC/FO hub

8E1

32E1

STM-1

NxSTM-1Traditional LL

1-2E1

Agile capacity(up to 16E1)

Agile capacity(up to STM-1)

Agile capacity(up to STM-1)

Linear/tree configuration Ring/tree configuration


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New Features in MINI-LINK TN R3


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STM-1 ring(1+1 E1 SNCP)

STM-1(Microwave 1+1)

STM-4 N+1 solutions

NxE1

MxE1

Kx10/100/1000 BASE-T

10/100/1000 BASE-T

STM-1 / STM-4

Transport Technology FlexibilityPDH, SDH, ATM, Ethernet


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AMM20pEthernet, PDH and/or SDH applications

New Magazines

AMM6p CEthernet, PDH and/or SDH applicationsPreferred PDH solution

OrAMM2p BEthernet, PDH and/or SDHapplications

ATUCapacity Agile Ethernet E1 kit

AMM6p DEthernet, SDH and/or PDH applicationsPreferred SDH solution

Introduction of SDH Ethernet preparation Improved high speed bus for

future functional increase Extended functionality


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ATM Aggregation

Efficient handling of WCDMA traffic Transmission savings by 30-80% Saving starts far out in the network Provisioned by the ATM Aggregation Unit

(AAU)

Benefit from ATM aggregation when needed


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Magazine

Backplane

Traffic handlingEfficient handling of GSM + WCDMA traffic

Nodeprocessor

E1 i/f STM-1 i/f

AAU

Modem

Radio

Modem

Radio

Modem

RAU

Modem

RAU

GSM WCDMA R99+HSDPA


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ATM Aggregation Unit (AAU)

31 ATM interface. Normally one ATM interface is one IMA group (2-16 E1) from one Node B

Capacity of 96xE1 All relevant CoS for 3G traffic supported Fits in AMM 6p and AMM 20p

AA

U B

aseline 24xE1

Additional AAU Capacity (24xE1)




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Modulation agility: 16 QAM to 128 QAM Optimized traffic capacity:

- up to 35xE1/72 Mbit/s @ 14 MHz- up to 75xE1/150 Mbit/s @ 28 MHz

Capacities in line with:– AAU for ATM– ETU2 for Ethernet

Suitable for ring and aggregation nodes– Add / drop of 1xE1-75xE1 through backplane– Built-in support for fully redundant traffic routing

HW support for high speed PtP bus

MMU2 DRoom for expansion

Optimized for spectrum efficiency


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MMU2 E 155, MMU2 F 155SDH modems MMU2 E 155: STM-1 MMU2 F 155: STM-1 with XPIC Fits in all magazines Software-configurable modulation

– 16, 64 and 128 QAM

Line interface– STM-1 front feed through a SFP (Small Form-factor

Pluggable) module, one per terminal– Wayside 1xE1 via backplane

SDH Protection– Integrated switch for 1+1 protection– ELP supporting MSP 1+1– EEP Optical protection

Supporting ACAP, ACCP, CCDP HW support for high speed PtP bus

XPIC(RJ45)

SFP(opt/el)

RAU

16/64128 QAM

STM-1

MMU2 E 155

MMU2 F 155 XPIC*

* XPIC available with 128 QAM


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Ethernet Features in MINI-LINK TN


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As of Today (R3)Optimized for TDM transport, with Ethernet support

Ethernet over PDH, Inverse Multiplexing n x E1up to 30/95 Mbit/s

Ethernet over SDH, in combinationwith Marconi OMS 800 portfolio

RAU N: capacity and modulation agility AMM: bus architecture

prepared for futurefunctionalityand capacity

Ethernet Switch


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ETU2 – Ethernet Termination Unit Multi-port Ethernet plug in board 5 x 10/100BASE-T interface 1 x 10/100/1000BASE-T interface 190 Mbit/s total maximum throughput Maximum 95 Mbit/s per channel,

– improvement from previous 31 Mbit/s

Equipment protection Fits in All Magazines E

TU

2 B

aseline: 1 interface with 31 M

bit/s

Additional 5 interfaces, maximum of 95 Mbit/s per channel


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Flow handling with priority queuing

Ethernet Priority Awareness

Priority 8

Highest priority

Lowest priority

Ethernet interface

Radio interface

Priority 1

Priority 2

Sch

edu

ler

802.1 p-tag detection

Now on all ports @ETU2, ATU & NPU


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MINI-LINK TNEthernet evolution

The high-speed bus architecture in MINI-LINK TN is prepared for extensive Ethernet transport

Support of true Carrier Grade Ethernet in upcoming MINI-LINK TN releases

– Native Ethernet– Ethernet over NG-SDH with GFP, VCAT and LCAS

Layer 2 switching capabilities

Magazines are prepared for high-speed Ethernet interconnect

Available in coming releases


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MINI-LINK TN Ethernet evolutionOptimized Ethernet transport, with legacy support

Full flexible network mix of microwave with - Ethernet over native radio - Ethernet over PDH - Ethernet over SDHfor optimized transport efficiencyand smooth migration

Ethernet switch for aggregation - VLAN support - Provider bridge support (S-VLAN)

Optimized Ethernet transport


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Cost-efficient capacity scaling

Ethernet over PDH up to 95 Mbit/s (3.3)per Inverse Multiplexing group, n x E1.

High capacity PDH Radio up to 75 x E1 per Radio (3.3) in 28 MHz channel.

Ethernet over native Radio up to 160 Mbit/s per Radio (4.1) in 28 MHz channel. Full flexible combination of nx E1 and

Ethernet over native Radio.

Ethernet over SDH up to 600 Mbit/s per 4 Radios (4.0/3.2)using 4x STM-1 Radio with 150 Mbit/s each,

in 2x 28 MHz channel with XPIC


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2G-3G Seamless Transport Network