Ralph SantitoroCarrier Ethernet Market DevelopmentRalph.Santitoro@us.Fujitsu.com

Packet Optical Networking for LTE Cell Tower Backhaul

May 18, 2011 2

Current landscape

Many, if not most, backhaul deployments use SONET Using Multi-Service Provisioning Platforms (MSPP)

SONET delivered via MSPPs well served cell tower backhaul providers for a long time Reliable Secure Provides guaranteed bandwidth Efficiently supports T1s (predominant circuit type requiring backhaul) Supports Ethernet, albeit inefficiently

Packet Optical Transport for LTE. © Copyright 2011 Fujitsu Network Communications

this is where the problem lies

May 18, 2011

Ethernet over SONET (EoS) for BackhaulWhy use it ?

Many different implementations of Ethernet Transport Switched (Connectionless) Ethernet Ethernet over MPLS Ethernet over SONET Connection-Oriented Ethernet

Each implementation varies significantly in: QoS Performance (packet latency, loss) Network Availability (protected / unprotected transport) Bandwidth Assurances (statistical versus guaranteed) Network Security (number of vulnerabilities)

EoS used because it is the safe choice… It just works !

3Packet Optical Transport for LTE. © Copyright 2011 Fujitsu Network Communications

May 18, 2011

Mobile Backhaul Technology Migration

Keep 2G traffic on TDM No traffic growth so T1 MRC is flat

High growth 3G and emerging LTE traffic High bandwidth cell site base stations upgrade to Ethernet Ethernet over SONET on MSPPs not efficient for packet-centric traffic

• How do you evolve this to a more efficient technology?

4Connection-Oriented Ethernet for Efficient Cell Tower Backhaul. (c) Copyright 2011 Fujitsu Network Communications.

Time

Ba

nd

wid

th

Voice + 2G Data

3G/4G Data

3G

LTE Ethernet

Ethernet

T1s

2G T1s

Mobile Switching

Center

SONET

Backhaul Network

Ethernet over SONET ??

May 18, 2011

Packet Optical Networking

Packet Optical Networking provides the integration of Packet: Connection-Oriented Ethernet Optical Transport: SONET, ROADM, WDM, OTN

Packet Optical Networking: Reliable Secure Provides guaranteed bandwidth Efficiently supports T1s (predominant circuit type requiring backhaul) Efficiently supports Ethernet for high-growth packet centric data

Packet Optical Networking Platforms (P-ONP) Enable 3G/LTE high growth data services to be efficiently backhauled

over existing SONET infrastructure While facilitating migration to packet-centric infrastructure

5Packet Optical Transport for LTE. © Copyright 2011 Fujitsu Network Communications

Ethernet over SONET challenges and how Packet Optical Networking addresses them

May 18, 2011

Ethernet over SONET (EoS) Challenges using Multi-Service Provisioning Platforms (MSPPs)

EoS doesn’t support aggregation EoS is a port-based transport with no service multiplexing Ethernet switch added for aggregation

EoS bandwidth dictated by SONET Container Size EoS bandwidth available in only 50Mbps STS increments Other bandwidth rates waste SONET bandwidth

SONETMSPP

Eth

MSPPEthMSPP

50Mbps

SONET VCG40Mbps wasted

10Mbps EVC50Mbps

SONET VCG30Mbps wasted

20Mbps EVC50Mbps

SONET VCG30Mbps wasted

20Mbps EVC

150Mbps of SONET BW required for only 50Mbps of EVC BW

MSC

7Packet Optical Transport for LTE. © Copyright 2011 Fujitsu Network Communications

May 18, 2011

COE over SONET on Fujitsu’s Packet Optical Networking Platforms (P-ONP)

COE supports aggregation Aggregates EVCs onto higher speed Ethernet port

COE aggregates EVCs onto same SONET VCG Can achieve up to 100% bandwidth utilization

COE over

SONET P-ONP

EthP-ONP

EthP-ONP

50Mbps20Mbps EVC

20Mbps EVC10Mbps EVC

More Service Revenue and Higher Margins using Existing Assets

MSC

8Packet Optical Transport for LTE. © Copyright 2011 Fujitsu Network Communications

May 18, 2011

Cell Tower Backhaul Evolution From SONET to Ethernet using COE

FMO Step 1: Add P-ONP with COE over

SONET to increase BW efficiency

FMO Step 2: Begin Migration to Ethernet

over Fiber (EoF) network. Existing services unaffected

Cel

l tow

er

MS

C

2G/3G 3G/LTE

PMO: SONET

T1s

MSPP at MSC

TDM

SONET

MSPP at Cell Site

Ethernet

EoS

SONET

Ethernet

COETDM

2G/3G 3G/LTE

T1s

P-ONP at MSC

P-ONP at Cell Site

Each Ethernet service requires a separate

SONET VCG EoF

Ethernet

COETDM

2G/3G 3G/LTE

T1s

SONET

P-ONP at MSC

P-ONP at Cell Site

COE muxes Ethernet services onto same

SONET VCG

Connection-Oriented Ethernet: A No-Nonsense Overview9Packet Optical Transport for LTE. © Copyright 2011 Fujitsu Network Communications

Fujitsu’s Packet Optical Networking Platforms facilitate CTBH network evolution while supporting multi-generation 2G/3G/LTE services

Connection-Oriented Ethernet for Efficient, Packet-centric Cell Tower Backhaul

May 18, 2011

Why COE for Cell Tower Backhaul ?

Makes Ethernet more like SONET which dominates CTBH networks today Network operations procedures similar to SONET Smoother transition for SONET-trained operations personnel

Highly scalable packet-centric technology Meets large scale CTBH connectivity and aggregation requirements COE is supported over any Layer 1 networking technology

Key Attributes Guaranteed Bandwidth (CIR) Consistent QoS Performance (Bounded Packet Delay, Packet Loss) High Security

11Packet Optical Transport for LTE. © Copyright 2011 Fujitsu Network Communications

May 18, 2011

Connection-Oriented Ethernet (COE) FAQs

What is COE ? Industry term defining a point-to-point implementation of Carrier Ethernet

• Tracked by industry analysts for past few years COE technologies have been around for about 10 years

What’s the difference between COE and Carrier Ethernet ? COE is a high performance implementation of Carrier Ethernet

Are COE implementations based on industry standards ? Implementations utilize MEF, IEEE, IETF and ITU-T standards

• Plus value added enhancements where standards are nascent

What technologies can be used to implement COE? COE can be implemented using Ethernet or MPLS technologies

Packet Optical Transport for LTE. © Copyright 2011 Fujitsu Network Communications 12

May 18, 2011

COE designed to mimic SONET

Makes Ethernet point-to-point Just like SONET circuits

Ethernet Virtual Connections (EVCs) are provisioned across the network Just like SONET circuits Eliminates Ethernet control plane and many layer 2 control protocols

Provide 50ms EVC path protection / restoration Just like SONET linear path protection

Provide EVC fault management at demarcation points Just like DS1 circuit loopbacks

Provides guaranteed bandwidth throughout the network Just like SONET circuits

13Packet Optical Transport for LTE. © Copyright 2011 Fujitsu Network Communications

May 18, 2011

Different approaches to COETechnology selection depends on the problem you’re trying to solve

MPLS-centric COE

Static PW T-MPLS

Eth EthMPLS LSPPW PW

• Ethernet• MPLS Pseudowire (PW)• MPLS Label Switched Path (LSP)

• Ethernet

Eth Eth

VLAN TagSwitchingPBT

Ethernet-centric COE

BMAC/BVID or C/SVID

PBB-TEMPLS-TP

Optimized for Multi-Service Transport Three OAM Layers Less optimal for Ethernet

service transport Standards Under Development

New standards being developed Augmenting MPLS standards

Optimized for Ethernet Service Transport One OAM Layer Less optimal for multi-service

transport Standardized Now

Reuses existing Carrier Ethernet standards, e.g., Service OAM

Ethernet TagSwitching

Connection-Oriented Ethernet: A No-Nonsense OverviewPacket Optical Transport for LTE. © Copyright 2011 Fujitsu Network Communications 14

Ethernet-centric COE optimized for Ethernet TransportMPLS-centric COE optimized for Multi-service Transport

May 18, 2011

COE Ecosystem6 Attributes of Connection-Oriented Ethernet

Standardized Services•MEF E-Line and E-Access

Security•No Bridging: MAC DoS attacks mitigated•Completely Layer 2: No IP vulnerabilities

Deterministic QoS•Lowest Packet Latency and Loss•Bandwidth Resource Reservation

Reliability / Availability• 50ms EVC/OVC Protection•UNI and ENNI Protection

Ethernet OAM• Link Fault Management• EVC/OVC Fault Management•Performance Measurements

Scalability•Layer 2 Aggregation•Statistical Multiplexing

15Packet Optical Transport for LTE. © Copyright 2011 Fujitsu Network Communications

May 18, 2011 16

High Availability Ethernet for Cell Tower Backhaul Multi-level Fault Tolerance with Fujitsu Packet Optical Networking

Port protection via Link AggregationLink Aggregation across cards

Card protection (active/standby or active/active)

Protected Power, Switch Fabric, etc.

50ms Network Protection via G.8031

Working / Protect EMS/NMS Instances

In-Service System Software Upgrades

Port

Card

Network Element

Management

NE Software

Network

Service

High Availability CTBH Service

Ethernet Service OAM via 802.1ag and Y.1731

Packet Optical Transport for LTE. © Copyright 2011 Fujitsu Network Communications

May 18, 2011

COE vs. Ethernet over SONET for LTE Backhaul

Key differences summaryAttribute COE on P-ONP EoS on MSPP

High Security

Bounded QoS (latency, loss)

50 ms protection/restoration

Ethernet Service OAM No

Guaranteed Bandwidth (CIR) through resource reservation

(CIR in 1Mbps increments)

(CIR in SONET 50Mbps

increments)

Oversubscribed Bandwidth (EIR) (EIR in 1Mbps increments) No

Service Multiplexing and Aggregation No

Efficient Bandwidth Utilization No

MEF-compliant Services EPL, EVPL, Access EPL, Access EVPL EPL

Ethernet Topologies P2P, P2MP (hub & spoke) P2P

Packet Optical Transport for LTE. © Copyright 2011 Fujitsu Network Communications 17