LTE roaming is all IP

bottlelewdMobile - Wireless

Dec 12, 2013 (3 years and 6 months ago)

87 views

LTE roaming


a whole new world

Acme Packet

3


Session Border Control (SBC) category creator
and leader with over 60% market share



Mission: enable delivery of trusted, first
-
class
interactive communications and data services
across IP network borders



10,000+ systems in over 100+ countries



850+ service provider customers



240+ enterprise & contact center customers



100+ distribution & integration partners



Experienced, long
-
standing leadership team



Public company with strong financials


Founded: 2000


HQ: Bedford, MA USA


NASDAQ: APKT


2010 revenue: $231.2M


2010 net income: $43M


575+ employees

AT&T

Acme Packet at a glance

Acme Packet

All

services

IMS/SIP services

Data services

Diameter

Mobility tracking

4G

LTE/M
-
WiMAX


eUTRAN



EPC


PCRF

S
-
GW

MME

Internet

Other IP

networks

P
-
GW

IMS

eUTRAN

EPS


RAN

Core

2001
-
2010

NGN

3G

SS7 over IP
(BICC/

SIGTRAN)

2011
-

Diameter
& SIP
over IP

IMS

LTE

1990
-
2000

SS7
over
TDM

PSTN

2G

The all IP Future

Acme Packet

1.
Attachment procedure

2.
Authentication procedure

3.
Update location procedure

4.
Subscriber data retrieval procedure

5.
Policy exchange


Home network

1

Attach

2

Authenticate

2

3

Visited network

HSS

MME

Roaming border

Authenticate

Update Location

4

Subscriber Data

5

Policy exchange

PCRF

PCRF

LTE roaming overview

Acme Packet

Visited MNO

MME

HSS

Home MNO

Visited MNO

PCRF

Home MNO

PCRF


S6a Diameter (3GPP TS 23.401)


AAA interface between visited MME and home HSS


Transfers subscription, location and authentication data for authenticating user
access to visited EPS





S9 Diameter interface (TS 23.203)


Policy interface between the Home PCRF and Visited PCRF


Transfers QoS policy and charging control information

Diameter is the key roaming protocol

Acme Packet

7

Home

network

Visited

network

eUTRAN

Home Routed

PCRF

eUTRAN

H
-
PCRF

V
-
PCRF

Distributed

Policy Control

eUTRAN

PCRF

Visited

P
-
CSCF

eUTRAN

PCRF

Visited

Services


Home routed with data backhaul to home network (existing data model)


Distributed policy control with policy interfaces


Visited P
-
CSCF with policy control in visited network (
selected by GSMA IR.92
)


Visited services with IMS core in visited network


VoLTE roaming options

Acme Packet

3G

LTE

Switching

Circuit

Packet

Voice bearer

TDM voice

Packet voice

Roaming signaling
(policy exchange)

SS7

Diameter

Subscriber data

HLR

HSS

QoS element

n/a

PCRF

LTE roaming is all IP

Acme Packet

Service provider B

Service provider A

Interoperability

Security risk

Scalability

Network
complexity

& cost

Roaming challenges

Acme Packet


DoS protection




Comprehensive L3
-
L5 interworking




Intelligent routing




Accounting/recording



Roaming network requirements