A presentation by Tom Schroer that was done at LTE Asia 2015 on how to monetize the 4G investment (Mobile Data, and VoLTE Roaming and Interworking).

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Monetizing the 4G
Investment
Mobile Data and VoLTE
Roaming and Interworking
LTE Asia 2015

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Agenda
 Drivers for 4G roaming
 The Value of Voice over LTE
 VoLTE/IMS interworking and
roaming
 Disruptive multimedia – Carrier
WebRTC
 Deploying 4G data roaming

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Drivers for 4G Voice and Data Roaming
But… subscribers are trained to switch off their
mobile data

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LTE Investment Up – Mobile Revenue Down
 European ARPU
 European mobile
revenue
 CAPEX per sub
6% per
year
2.1%
per year
8.4%
CAGR
(2009-13)

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Pressure From OTT
 1.8 Billion Over the Top subscribers
 $6.67 Annual Average Revenue Per Sub
- Source: IHS

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The value of Voice Over LTE
 The value of VoLTE
 HD Voice - better QoS
 Higher MOS: ~3.8 vs. ~3.4 Skype
 Faster Connect: 2.9 sec vs. 5 sec
for 3G
 Battery Life: 56-94% longer than
Skype
Source: Signals Research Group

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VoLTE/IMS Interworking
 VoLTE/IMS Interworking – IR.34
 Efficient, cost effective
connectivity
SIP/RTP

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VoLTE/IMS Interworking
 VoLTE/IMS Interworking – IR.34
 Efficient, cost effective
connectivity
 Closed, secure network – not the
public internet
 QoS, security, interworking,
reliability better controlled
 Advanced features to provide
added value
 TDM termination
 Contextual voice services
 Bandwidth compression
IPX
SIP/RTP

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Authentication – S6a
Visited Home
Destination Network
Diameter
SIP
RTP
GTP
VoLTE/IMS Roaming Architectures
 S8HR
 Comparable to existing mobile data roaming
arrangements
 Leverages core IMS of Home Network
 Push towards QoS based charging
 Higher QCI values (1,2) for Voice and Video
 Benefits
 Fast time to market
 Less complexity
 Enables VPLMN w/o IMS support VoLTE
roamers
 Challenges
 Emergency calling
 Geo local calling
• Local number mapping provisioning in HPMN
Tunneled VoIP – S8
Authentication – S6a

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Visited Home
Diameter
SIP
RTP
GTP
Destination Network
 Local Breakout
 RAVEL – Roaming Architecture for Voice Over
IMS with Local Break Out
 Introduces TRF
 SIP Signaling and Media sent together over
NNI
 Benefits
 Familiar charging model – Reuse of cascade
billing techniques
 Support for Emergency Services
 Lawful Intercept
 Voice fall back support (CS/SRVCC)
 Challenges
 Complexity – variations in UE to core IMS
 Both networks require IMS
 OCS interface required between networks
VoLTE/IMS Roaming Architectures
Tunneled VoIP – S8
Authentication – S6a
Authentication – S6a

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Visited Home
Diameter
SIP
RTP
GTP
Destination Network
 Which approach? Traffic dependent
 First commercial VoLTE roaming
arrangement April 2015
 LG UPlus and KDDI using S8HR
 Additional VoLTE roaming trials
 Docomo, KT, and Verizon using S8HR
 KPN, China Mobile and iBasis using a
LBO approach.
Tunneled VoIP – S8
Authentication – S6a
Authentication – S6a
VoLTE/IMS Roaming Architectures

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 IPX value proposition
 Any-to-any connectivity
 Interoperability between operators deploying
different roaming methods
 Build on existing IP Proxy with P-CSCF and TRF
functionality
 Enable faster time to market
 Enable VoLTE roaming for operators without IMS
core
 Accelerate revenues and monetization of 4G
 Outsourcing and hosted options for customers
 Regional breakout in addition to local breakout
 Offload backhaul, improve latency on the more
complex call scenarios
 TDM interworking and transcoding heavy lifting
 Layer advanced contextual voice services on
top of roaming hub
IPX
Visited Home
DSC
DSC
PGW
PCSCF
IBCF/MGW
Other
Networks
TRF
MGCF
VoLTE/IMS Roaming Architectures
Diameter
SIP
RTP
GTP

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Carrier WebRTC
• 1.5B+ total
WebRTC-capable
browsers
• 600+ companies
building on
WebRTC
• 4000+
developers
subscribed to
WebRTC mailing
list
• 40+ external
contributors
• 3B+ total
downloads of
WebRTC-powered
mobile apps
Presented by Serge Lachapelle of Google @ WebRTC Global Summit – April 2015
Current State of WebRTCWebRTC = disruptive technology

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Carrier WebRTC - Service Provider Initiatives
 Cannibalization versus customer churn
 Libon - Orange
 Appear.in - Telenor
 Platform for developers
 Prevent app bounce out to multimedia
 Contextual multimedia-based services
“Instead of the consumers
going to the internet, the
internet will come to them…”
-Gerhard Fettweis, Siavash Alamouti

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Carrier WebRTC
 Start now – look for low hanging fruit
 Leverage position and assets
 Trusted intermediary between
networks
 Secure interconnection
 White label offerings
 WebRTC gateway functionality
 Bridge gap between web, IP and TDM
 Transcoding, NAT traversal, and media
mixing
 Entry point for OTT players and app
developers to connect
Public
Internet PSTN
SIP
Trunks
Enterprise
Local
Operator
WebRTC
Gateway
IP Proxy +
TDM
breakout
IPX

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Authentication – Gr  Diameter-based Signaling Hubs
 Signaling mediation
 Signaling enhancement
 Multi-IMSI offerings
 3G-4G Roaming Interworking
Authentication – S6a
Visited Home
Authentication
Sponsor Operator
OSS/BSS
Enhanced
Services
Data Records
IMSI lookup
DSC
IPX
4G Roaming
Diameter
SS7
MAP-
Diameter

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 Diameter-based Signaling Hubs
 Signaling mediation
 Signaling enhancement
 Multi-IMSI offerings
 3G-4G Roaming Interworking
 Hosted DEA offering
 Help operators move to OPEX model
 Expandable interworking support
 Virtualized Signaling Controller VNFs
flexibility
Visited Home
Authentication
OSS/BSS
Enhanced
Services
Data Records
IMSI lookup
DSC
Hosted
DEA
IPX
4G Roaming
Diameter
SS7
Authentication – S6a
Authentication – Gr

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Monetizing the 4G Investment
 IPX as trusted intermediary for MNOs
and OTTs
 Any-to-any connectivity and IPX security
 Leverage interoperability and
interworking expertise
 Contextual voice services
 Take advantage of disruptive changes in
technology and charging models
Download the white paper
http://networkfuel.dialogic.co
m/ipx-solutions
@Dialogic

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