Axerra Networks Solutions for Mobile Backhaul. 2 - © 2009 Axerra Networks®. All rights reserved. About Axerra Networks Founded in 1999 Global provider

Axerra Networks Solutions for Mobile Backhaul

2 - © 2009 Axerra Networks®. All rights reserved.

About Axerra Networks

Founded in 1999

Global provider of SERVICE CONVERGENCE solutions over packet transport

– A leading vendor of multiservice pseudowire solutions

– Active standard bodies participants and influencer

– Field proven with live deployments

Award winning products

Offices around the world

– Israel (HQ), EMEA, Russia (incl. CIS), USA,APAC (Hong Kong, Singapore)

Financed by strong investors

– Carmel Ventures

– TLcom

– HarbourVest


Mobile Backhaul - Key Market Trends Enhanced user experience demands higher-speed data rates

– HSPA – the “killer application” for mobile backhaul – Flat rate

Installed Worldwide cell site connections will grow from 3M in 2008 to 4.2M in 2011

– The vast majority of today installed cell sites are T1/E1 based

– Many of the cell sites can’t be upgraded to Ethernet

– Ethernet to the cell site will be required in order to support future NodeB / eNB (LTE)

4G (LTE, WiMax) technology standardization is in final stage of the approval process

– Will take 3-4 years until mass deployment

– Many operators will use PW as IP solution until LTE availability in order to skip one hardware upgrade phase

Access is definitely the bandwidth bottleneck

– PDH/TDM is not a scalable solution

Backhaul networks migrating to Ethernet

– The mobile RAN is migrating fromTDM and ATM to IP/ETH

“All IP” RAN evolution will happengradually and not in one step

– 2G/3G Base Stations will co-exist fora long time with 3G taking over gradually

– Base Stations with TDM/ATM I/Fswill stay for at last 3~5 years

Source: Infonetics Research Mobile Backhaul Equipment,Installed Base & Services, October 2008

Worldwide Mobile Backhaul: Installed vs New Connections

0

1,000

2,000

3,000

4,000

5,000

CY05 CY06 CY07 CY08 CY09 CY10 CY11

Co

nn

ecti

on

s (K

)

Installed connections

New connections


TDM Backhaul Hits the Breaking Point Ethernet Solutions for Cell Backhaul

Migration to Ethernet

Capacity requirements grow– E1/T1 costs grow linearly– Need to decouple cost and capacity– Ethernet is more efficient over any media

HSPA Base Stations come with Ethernet ports

Ethernet enables scalable, flexible, lower costper bit bandwidth to the cell site:

– Optimized for data

– Convergence

– WiMAX and 4G in general

Source: T-Mobile Europe


Migrating to Ethernet Transport - MEF Use Cases

Hybrid RAN/HSPA Offload -Enables phased migration to

Ethernet while:Utilizing low cost and available

broadband technology fortransporting HSPA traffic

Packet offload over Carrier Ethernet (HSPA offload) Overlay Carrier Ethernet does bandwidth offloading onto Ethernet services Legacy network continues to transport voice and deliver timing/signaling Voice services are migrated onto Ethernet in a later phase

Emulation over Carrier Ethernet (legacy services over Ethernet) RAN nodes with legacy interfaces transport all traffic over Ethernet services using

emulation technologies – from Day 1

“Big Bang”


Pseudo-Wire => the Packet-based RAN Migration Enabler

For the next few years the vast majority of cell site connections will be based on T1/E1 interfaces

About 1/3 of overall cell sites are collocated 2G/3G sites Growing demand for Ethernet connectivity to high capacity cell sites

– The amount of bandwidth per cell site is estimated to grow by 3x to 4x over time

– New 3G and 4G NodeB will use Ethernet interfaces

Most additions of 3G cell sites will take place in existing 2G cell sites

– Operators use existing foot print of 2G cell sites

All traffic originating from the cell site will be carried over Ethernet using PWE3 gear

Use PWE3 gear to servecollocated 2G/3G sites

Use PWE3 gear withadvanced functionality

(Ethernet Link/Services OA&M and PM)

PWE3 CPE will become anEthernet Demarcation Device


Widespread Agreement on theNeed for Pseudo-Wires (PW)

Major operators are deploying PW solutions at the cell site andit plays an important role in the evolution of mobile backhaul networks to IP/Ethernet

– Some of the operators that announced PW deployment in 2007: T-Mobile, Telecom Italia, Swisscom, Taiwan Mobile, and eMobile (Japan)

– Standardisation is almost accomplished, including 1588-2008Precision Time Protocol

– For most carriers it’s not a question of “if” but a question of “where”and “when”

BTSBSC

Carrier EthernetRAN

Emulated TDM/ ATM/HDLC PW Service

ETHETH

TDME1

IPETH

R5/LTE/

WiMax

PWE3 Cell Site Device PWE3

GatewayG.823/824/8261 Compliant

Clock

ATM RNC

aGW

ATM/IMA

NodeB


PW OAM

UNI

Ethernet Service OAM

CECE PE

UNIAC AC

PEPSN Tunnel

Eth Link OAM Eth Link OAM

Subscriber Interface

OAM

Network Interface

OAM

Subscriber Interface

OAM

Network Interface

OAM

Ethernet Link OA&M: Discovery,Link Monitoring, Remote Failure Indication,and Loopback

PWE3 CPE Will Become an Ethernet Demarcation DeviceMonitoring SLA Over 3rd Party Transport Networks

PWE3GW

PWE3Access Device

Ethernet demarcation features enable:

– End to End Service Level Assurance Ethernet QoS

– Investment protection PWE3 CPE of today will evolve to Ethernet Demarcation Device

– Lower total cost of ownership Fewer devices in the Cell Tower


Highlights of Key Trends in Mobile Backhaul

Migration to IP/MPLS backhaul networks is inevitable

– Drivers are RAN capacity growth, IP base stations and service evolution

Immediate OpEx savings and short ROI

– Carriers will deploy Ethernet for 3G and 4G backhaul to realize significant cost advantages and close the gap between mobile revenue and expense

Investment protection

– Shifting to Ethernet Assurance and added value features…

RAN Evolution versus Revolution

– 2G/3G Base Stations are collocated and will co-exist for a long timewith 3G taking over gradually

– Migration to All IP RAN will happen gradually and not in one step

PW Mobile Backhaul solutions are picking up, becoming mainstream

– Pseudo-Wire is the Packet-based RAN Migration Enabler

– Field-proven with large deployments

PW Mobile Backhaul Solutions Available Today..for 2G, 3G, and Beyond

PW Mobile Backhaul over ANY packet transport network


Typical 2G/3G RAN Backhaul Architecture

Both 2G TDM and 3G ATM traffic are backhauled over TDM leased lines

Radio Access Network

Leased lines for backhaul today account for 20%-40%of Mobile Operators’ Operational Expenses (OpEx)

BTS

NodeB

Abis

E1/T1

RNC

Iu

ATM/IMA, n x E1/T1

BSC

A

ATMSwitch

STM-1 ATM

TDM Leased Lines

DXC

E1/ T1/ChSTM-1

E1/T1 ChSTM-1

E1/ T1/ChSTM-1

Iub

Abis

Iub


Key Requirements of Ethernet-based Backhaul

Meeting clocking/synchronization requirements

– Compliant with G.823/824/8261

Low end-to-end delay must be maintained

Ethernet Service and Link OAM & PM

High Availability

Ensuring QoS of different traffic types

– Voice, data, video, signaling, management, etc.

Traffic Optimization (TDM grooming, ATM aggregation, encapsulation overhead reduction)


GSM/UMTS Backhaul over PSN

Supports all generations (GSM, EDGE, UMTS and HSPA) of mobile voice and data, also WiMax and WiFi and even Enterprise Services

Preserves native features and signaling across packet networks

Meets strict clock synchronization requirements through Axerra’sHigh-Precision Clock Recovery (HPCR®)

– As specified in ETSI TS 125 402 or 3GPP TS25.104

Ensures QoS of different traffic types such as voice, data, signaling, management, etc.

Eliminates the need for expensive ATM switch

RNC

BTS

ETH Carrier Ethernet/

MPLS

AXN10 PWE3 CPE

E1/T1Abis

Iub

STM-1 ATM

AXN PWE3 Gateway

E1/T1/STM-1

AbisETH

Iub - ATM Pseudo-Wire

Abis - CES Pseudo-Wire

PSN TunnelBSC

NodeBIubnxE1/T1 IM

A

ETHWiMaxWiFi


HPCR® –High Precision Clock Recovery ±15 PPB

Complies with ITU-T G.823, G.824, G.8261

Designed to meet the clock synchronization requirements as specified in ETSI EN 300 912 and TS 125 402 “Synchronization in UTRAN stage 2."

Tested and approved by major mobile equipment vendors

BTS/NodeB

AXN10 PWE3CPE

E1/T1sE1/T1/STM-1

AXN Gateway BSC/RNC

G.823/824/8261 Compliant Clock

High accuracy Primary Reference Source (PRS) clock

Synchronization InformationHPCR

Carrier Ethernet/

MPLS


Backhaul from Cell Site - HSPA Offload

The Hybrid approach:– R99 voice/data and signaling remain on traditional TDM leased lines

– HSPA data traffic runs on Ethernet network – possibly ADSL Enables phased migration to Ethernet while:

– Utilizing low-cost and available broadband technology for transporting HSDPA traffic

– Lower quality Ethernet network needed

– HPCR not needed: sync via SDH – same as today

– Lower cost savings, but possibly easier deployment

NodeB

1-2xT1/E1 for R99 Voice/Signalling

HSDPA

AXN10PWE3

STM-1 ATM

AXN PWE3 Gateway

DSL + Ethernet or IP or ATM

SDH/Leased Lines

ADSL

E1s/Ch STM-1

Emulated ATM Circuits

ETH/ATMETH

T1/E1

ATM Switch

2G BTS BSC

RNC

E1s/Ch STM-1


Backhaul From Aggregation/Hubbing PoP

The majority of cells will use TDM access for many years

– About 75% of cells in 2009 will still be connected over Microwave and PDH/SDH

Today Tier 2 backhaul is done mainly with SONET/SDH but Ethernet/MPLS will follow to the Aggregation PoPs

Carrier Ethernet and MPLS will be available in Aggregation PoPs much earlier than in the cells

Wireline and Wireless network unification plays a major factor

Provides major OpEx saving

Extends grooming to hub sites - 3/1/0 and VPI/VCI

Emulated TDM/ATM Circuits

Carrier Ethernet/ IP/ MPLSTransport

nxE1/T1s PDH MW

BTS/NodeB

ETHBTS/

NodeB

Hubbing Site

ETH

nxSTM-1 ATMAXN

Gateway

nxCh. STM-1

RNC

BSC

STM-1 ATMBTS/NodeB

PmP

Central Site (CO)

LL


Multiple Services – One Solution

Ethernet

Service AXN

MSC

AXN

BSC

RNC

RNC

3G

BTST1/E1

ATMFR/HDLC

Ethernet

TDM

ATM/FR/HDLC

GigE

Pseudo-Wire Tunnel

Axerra Service Supported Service Cell Site Interface MSC Interface Benefit

CES Pseudo-Wire AMPS, GSM, CDMA TDM: T1/E1, DS3/E3, OC3/STM-1

TDM: T1/E1, DS3/E3, OC3/STM-1,

B/W gains from DS0 grooming

ATM Pseudo-Wire UMTS, HSDPA ATM & ATM IMA: T1/E1, DS3/E3, OC3/STM-1

ATM: T1/E1, DS3/E3, OC3/STM-1

Stat-mux gains

No ATM switch needed in CO

HDLC Pseudo-Wire 1xRTT, EVDO HDLC: T1/E1, DS3/E3 HDLC: T1/E1, DS3/E3, OC3/STM-1

Stat-mux gains

HDLC data interface

FR Pseudo-Wire iDEN FR: T1/E1, DS3/E3 FR: T1/E1, DS3/E3, OC3/STM-1

Stat-mux gains

FR data interface

Ethernet switching EVDO, WiMAX, 4G Ethernet: FE Ethernet: GigE No need for TDM interface on router

Cell Site

Multiprotocol

Pseudo-WiresWiMAX

EVDOEthernet


Axerra’s Complete Product FamilyAXN Product Portfolio of Access Devices and Gateways

Scalable family of platforms– 1 to 1000 E1/T1 capacity– Carrier Class Reliability

Multiservice Pseudo-Wire– CES + Layer 2 Pseudo-Wire

Pseudo-Wire flexibility– Axerra-owned code – Software-based architecture – 5 patents + 1 pending

Point-and-Click provisioning

Performance Monitoring

Comprehensive Fault Management

Standards-based

Location

Capacity

AXN800

AXN1

AXN1600N

CPE/Cell Site MTU PoP/CO

AXN10

1000E1/T1

1 E1/T1

AXNVision


Axerra’s Unique Value Proposition

Single and robust platform supporting both Mobile Backhaul

and Business Service Delivery

– Best-of-Breed Pseudo-Wire industry leader and solution provider

– Enable leased line replacement such as PBX backhaul and converging

legacy services over PSN covering private line, FR, ATM, and HDLC

services

– Multiple Services – One Solution

Beyond Circuit Emulation – variety of Layer-2 Pseudo-Wire services

Scalable solution with modular and flexible platform

Supports all generations of mobile & business services

Robust and accurate adaptive clock recovery mechanism

Strong momentum with world class OEM and SI partners

Field proven

Thank you for your attention

Visit our website at www.axerra.com

http://www.axerra.com/

Documents

Axerra Networks Solutions for Mobile Backhaul. 2 - © 2009 Axerra Networks®. All rights reserved. About Axerra Networks Founded in 1999 Global provider