Building EPC Systems

1 Radisys Corporation Confidential

Welcome!

April 12

Deploying LTE Small Cells: Interference

Mitigation Solutions

May 17

Building EPC Systems

June 14

The LTE Service Layer

July 12

End-to-end QoS in LTE

Real Implementation Challenges

of LTE Network Equipment:

Exploring the Trade-offs and

Solutions

To register for the remaining webinars:

http://go.radisys.com/LTE-Webinar-Series.html









Building EPC Systems From Highly Scalable to Converged Systems

Speakers:

Todd Mersch, Director Product Line Management

Eric Gregory, Director Product Line Management

Renuka Bhalerao, Principal Architect

May 17, 2012


Today‟s Agenda

Market Dynamics

LTE EPC – All-IP-based Capacity Storm

Delivering Highly Scalable EPC Equipment

Shrinking the Network for Specialized Deployments

Q & A

Summary / Wrap-Up


Evolved Packet Core Policy Control Radio Access Network IMS

Application

Server Media

Resource

Function

IP

Multimedia

Subsystem

Internet

Policy &

Charging

Routing

Function

Policy &

Charging

Enforcement

Function

Mobility

Management

Entity

LTE Security

Gateway

Serving

Gateway

Packet

Gateway

eNodeB

User

Equipment

Macro Small Cells

60+ Customer Wins

Audio Video Conf

~65% Market Share

10G 40G ATCA

~40% ATCA Market Share

Dumb Smart Pipes

Traffic Management

End-to-End LTE Infrastructure From Radio Access to Media Processing

Home eNodeB

User

Equipment


Technology to Drive Wireless Disruption, Service Monetization Mired in Uncertainty

Global survey of mobile operators

to get decision-maker insights

Devices continue to drive change

among subscribers & operators

VoLTE is seen as necessary but

not a top priority

Small Cells and Wi-Fi offload

provide a capacity boost

LTE Advanced will bring improved

spectrum efficiency & lower costs

FDD & TDD will both succeed, but

not yet clear how they will coexist


Radisys in the Core Network

Radisys is in the core: from ASN gateways to EPC to DPI, Radisys

ATCA & Trillium software is everywhere.

In order to drive revenue, operators need affordable ways to

increase capacity

• Operators are focused on making their networks faster and more efficient

• Looking for solutions to ease network capacity pressure

Beyond simply keeping up with traffic, operators need new, more

dynamic, application-based revenue models to prepare for the future

• Application development is moving fast and operators need to keep up

In order to monetize growing data demand, operators need to

increase capacity, reduce expenditures and bring new

applications to market – now


Today‟s Agenda

Market Dynamics

LTE EPC: All-IP-based Capacity Storm



Q & A

Summary / Wrap-Up


LTE EPC Challenges

Efficiency is a Must

UMTS has Delivered (Finally)!

• At UMTS launch, the entire discussion was around the “killer app”

• The killer app, as hoped, is streaming media

• But the “killer app” turned out to be a network killer as the market tries to

figure out how to monetize all the applications

– OR how to reduce operational costs

Turning to LTE, discussions have been about efficiency

• Cost per bit

• Spectral Efficiency (Subs per MHz)

• Quality of Service / Quality of Experience

• Higher densities

However, the focus to date on LTE has been about delivering higher

throughputs in the access network

• The discussion now needs to shift to the core of the network


EPC Network Architecture

• NAS & anchoring HO signaling, authentication, paging, radio bearer management, embedded HSS, PCRF

MME functions

• Route and forward user packets,

• User plane mobility anchor for HO S-GW functions

• Point of exit and entry of traffic between UEs and external PDNs, PCEF P-GW functions


LTE by the Numbers

Performance Characteristic EPC Impact

Significantly increased peak data rates

100Mbps DL, 50Mbps UL High throughput packet processing

Improved spectrum efficiency

Up to 4X compared to UMTS

Better RAN efficiency = faster saturation

of EPC capacity

Reduced round-trip latency

< 100ms control, <5 ms data

Real-time applications (e.g., online

gaming)

High speed control and data plane

processing for mobile internet

experience

Scalable bandwidth

1.25MHz – 20MHz compared to UMTS

5MHz

High throughput,

low latency packet processing

Compatibility with earlier systems

SAE supports Inter-RAT hand-offs UMTS

& CDMA2000

Control plane demands for managing

HO / states across multiple domains.

EPC Performance Key to

Delivering the Promise of LTE

Data throughput: ~200

Gbps

Data sessions: ~5 million

Signaling rate: 100k

transactions/sec


LTE EPC - Smart Network Flat, Scalable and Secure

All IP backbone, simple network architecture

High speed and low latency but also address capacity requirements

• So make sure the networks are not underbuilt and over utilized anymore

Significant signaling load with large number of bandwidth hungry,

dynamic sessions

Nature of data traffic is „always on‟ with support for dynamic session

management due to mobility, coverage etc.

• Voice and data traffic on the same IP backbone

Widespread use of DPI expected for dynamic traffic management and

policy control and effective applications support

Growing need for IPsec and access aggregation for the HetNet era

Future Proof: Not only the high speed user data but rapidly multiplying

M2M connections


ABCs of Building EPC Systems

Carrier-grade platforms

Purpose built, Multi-core, multi

processor

HW

Specialized accelerators

Standards- Compliant SW

-well tested

-IOT’d and field deployed

Highly Scalable

EPC

Systems


Today‟s Agenda

Evolved Packet Core Requirements & Market Drivers




Q & A

Summary / Wrap-Up


Anatomy of an EPC System

MME Application

Ready Platform

OS Networking Stack

SGW/PGW Application Ready Platform

Packet

Processor

Operating System

Chassis &

Shelf Mgr Compute Switch

IPMI commands, firmware, BIOS, etc.

L2HA Network Health Checking

SAF AIS Application API

eGTPv1/eGTPv2

(Gn, S5, S11, S4)

NAS, S1 AP, Diameter

(S10, S6a)

Storage,

AMCs, etc.

HA Management

Hardware Software Application Third Party Products

Legend

APIs

Sys

tem

Ma

nag

em

en

t Fast Path User Plane

GTP-u, IPv4, IPv6, IPSeC

- System integration

over purpose-built HW

- Scalable model with a

blade level architecture


EPC Platform Building Blocks

T40 Platform

Management

40G System Redundancy

Investment Protection & Scalability

Upgraded ePCs will need to

get to market rapidly to deliver

expected cost efficiencies

Increased SW content can help

decrease TTM

Single Point Integration

Centralized software

upgrades

Centralized diagnostics

Extensible framework for

TEMs to include their own

customer sensors or

watchdogs

System integration

of Hub, Node and

Chassis

Important with new

high speed

technologies

Redundancy is a pre-

requisite for telecom

environments

Switch redundancy

Application redundancy

Investments made in

10G platform carry

forward to 40G

TEMs need to scale

down to meet new

application req‟s (i.e.,

public safety)


Leveraging Bladed Systems

Intel CPU boards running Trillium LTE

Control Plane Framework

NPU packet processing boards running fastpath

data plane SW

Functions hosted on CPU:

• For MME: Mobility management, authentication & key management, location services interfaces, handover interworking to 2 & 3G circuit switched & packet systems, subscriber profile interfaces

• For PGW & SGW: Control plane logic, OAM, billing, PCC / PCRF interfaces

Functions hosted on NPU:

• For PGW & SGW: User / bearer plane packet processing & forwarding, traffic shaping & QoS Management, packet counters & statistics


Scalability

Large Scale Deployment

• 3 x 14-slot Chassis

• Full Chassis for MME

• 12x CPU board

• Full Chassis for S G/W

• 10x NPU boards

• 2x CPU boards for OAM/Billing

• Full Chassis for P G/W

• 10x NPU boards

• 2x CPU boards for OAM/Billing

Small Scale Deployment

• 1x 2 slot chassis

• MME and Control

• 1x CPU

• P G/W + S G/W

• 1x NPU

• Ideal for specialized apps (Defense, Rural, etc)


40G = Reduced Cost / Bit

ATCA 10G System

• Loaded with 12x NPU

• Support for 108,000 video sessions

• Cost -> $0.93 per session

ATCA 40G System – Matching Density

• 4x NPUs and higher throughput 40G switch



ATCA 40G System – High Density

• 12x NPUs and higher throughput 40G switch



ATCA 40G Delivers a Cost-Effective EPC


Linkage Between 3G and LTE

If architectures were planned appropriately then

adding LTE to the core network may be as easy as a

software upgrade

• MME + SGSN

• SGW / PGW + GGSN

This leads to a couple of divergent conclusions

• It should be fairly easy to create a multi-function core

network device

– The upgraded platforms may not have the bandwidth to keep up with

two different access technologies – one of which significantly

increases bandwidth

– ATCA is ideal to help with the scalability aspect


Advanced Features Competitive Differentiation

Traffic Optimization

• Traffic shaping, traffic mgmt, Lawful Intercept, data caching

Specialized traffic offload services

• Small cells,

• IOG

• Wi-Fi offload

Aggregation services (edge / access GW)

• Support high number of base stations in various forms (HetNet)

Load Balancer

•Multi-blade solution needs an efficient load balancing to effectively utilize resources in each blade

•Maintains affinity of flow to a given blade in a scalable system

•A central entity that is responsible for moving traffic away from failed blades in a redundant system


POLL Question

How do you plan to provide EPC functionality to your

customers?

A. Separate 3G & LTE products on existing

hardware platform

B. Separate 3G & LTE products on upgraded

hardware platform

C. Combined 3G & LTE products on existing

hardware platform

D. Combined 3G & LTE products on upgraded

hardware platform


Today‟s Agenda

Evolved Packet Core Requirements & Market Drivers




Q & A

Summary / Wrap-Up


Early Realization

Smarter (and smaller) is better when it comes to

Network in a box applications for niche markets

Full capacity and function at the network edge

Enables increased access at Low Cost

Where is the need for it

Near Field Communications

Public Safety

Aerospace, defense

Developing economies & rural deployment

Greenfield deployments


LTE On Battlefield

Need for Platoon-level communications

• Based in Humvee or man-wearable

• Size, weight and power constraints

• Limited or no backhaul connections

• eNB & EPC running on COM Express module with carrier card for air interface

• Humvee is “self contained” 4G Network

Challe

nge

Solu

tion

Computer on Module (COM) Express: Mobile, low power,

small form factor, ruggedized, extended temperature

Rackmount Server: High performance image processing,

long-life solutions


Drivers Of Converged LTE Network

Standards- based

Solution

Complete Functionality with Access at the Edge

Converged functions in a small FF

Size, Weight and

power constraints

Secure ALL IP backbone


Form Factor Flexibility

Secure Small Scale Field Computing / Communications Element

• COM Express in a vehicle digital backbone

Battlefield Computing / Communications Solution (optimal)

• Small Scale (COM Express + LTE Radio)

Secure Medium / Large Scale Computing / Comms Element

• ATCA Systems: 2 slot or 6 slot Chassis options

Large Scale (6-slot ATCA w/ Virtualization SW + CNE + MS + SEG)

• Integrated End to End Communications

• Secure Small Scale Field Computing / Communications Element +

Medium / Large Scale Computing / Communications Element +

partner components


LTE Converged Network: EPC In a Box

UDP

eGTP-u

IP

Data Plane

IP (IP Sec)

SCTP

S1-AP

Control Plane

Control Plane

MME, SGW/PGW. HSS APPLICATION

Data Plane

APPLICATION

System

Mgmt

IP

UDP

eGTP-c

IP

SCTP

Diameter

IP RLC

MAC

eGTP SCTP

S1AP

TUCL

RRC eNB

Data App

Convergence Layer

eNodeB

PDCP

EPC

eNB Application (RRM, SON, Timing)

OA

&M

(T

R69/T

R196)

PHY

EUTRA

+

COM Express

(Computer on Module)

Custom Carrier

(Application-specific Carrier Board)

= Complete EPC in

a Box


Converged EPC Requirements – Performance – Tradeoffs

Category Supported

Platform Small FF (non-ATCA), easy to

install, mobile (on a vehicle)

Power

Consumption 150 – 200W

Number of users

supported 100 – 1000 connected

Data Throughput Up to 14+ Mbps per user

Driving Requirements

• High degree of robustness, reliability and availability

• Better network resource management (guaranteed QoS, traffic engineering)

• Ease of installation and upgrade

• Ability to enable new applications like VoIP, OTT

• Future-proof investment

Optimizations

• Local function for HSS and

Policy management

• No traditional redundancy

requirements

• Limited HO and inter RAT

interaction

• No Billing and charging in

some scenarios


Complexities of Architecting Converged EPC

•Need to maintain external interfaces with HSS, PCRF

•Self-contained database/policy when backhaul is unavailable

•Can be scaled up as needed with additional HW components

•Maintain required QoS level for subs and related applications

•Ability to direct best possible resources to highest priority users, e.g. in disaster situations

•Redundancy support at chassis and geo level (1:1 for control plane, load balance for user plane)

•Small FF, lower power consumption

•Ruggedized for outdoors

•Easy to transport & setup at disaster sites

•Self contained OAM to bring up system

•Need for cost-effective solution

•Minimum HW configuration to start with

•Architect the SW functions taking max advantage of platform feature set

Converged Functions

Small Footprint

Easy installation

Minimum external control

Standards- based

Interoperable, extendable

Stable & Robust

Maintain QoS


POLL Question

What market will deploy the most network-in-a-box

solutions?

A. Aerospace & Defense

B. Public Safety

C. Rural / Emerging Markets

D. Other


Unmatched Products & Expertise

Embedded

Wireless

Infrastructure

Solutions

Conclusion

EPC Opportunity • Highly-scalable core networks

• Single system for specialized deployment

Challenges & Opportunities • Delivering lower cost / bit = 40G

• Enabling scalability in small footprint

Strategic focus on LTE • Complete EPC solutions

• Scalable = COM Express, Appliance,

ATCA

http://radisysbrandguide.findsubstance.com/downloads/Trillium_Mark_Master.zip


Q&A

Contact us!

Todd Mersch

[email protected]

Eric Gregory

[email protected]

Renuka Bhalerao

[email protected]

For more information on our products, visit:

www.radisys.com/

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