the lte service layer
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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
2 Radisys Corporation Confidential
LTE Service Layer From VoLTE and Video to Multimedia and M2M
Speakers:
Nitin Tomar – Sr. Product Line Manager
Adnan Saleem – Chief Architect
Debjani De – Sr. Architect
June 14, 2012
3 Radisys Corporation Confidential
Today’s Agenda
Market Dynamics
Evolution of Services from 2G, 3G to LTE / IMS
LTE Killer Apps – VoLTE, Video
LTE Services and System Aspects
Conclusion
Q&A / Wrap-up
4 Radisys Corporation Confidential
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
5 Radisys Corporation Confidential
LTE Services Where is the Monetization?
GSA confirms LTE is the fastest
developing mobile technology
LTE Subscribers are growing:
• 17M already on LTE (source GSA)
• 50M LTE connections (source Informa)
LTE VoLTE devices
• MetroPCS by 2012
• Verizon by 2013
Why VoLTE ?
• Reduce dependency on legacy networks
• Re-farm spectrum
Beyond Messaging & Internet, mobile
operators are becoming “invisible
service enabler” (source Informa)
327 operators investing in LTE in 99 countries
267 operator commitments in 86 countries
60 pre-commitment trials 13 more countries
80 commercial networks in 38 countries
76% of mobile operators expect to see VoLTE
deployed within 3 yrs
86% support VoLTE
54% expect a positive impact of VoLTE on TCO
& performance
50% expect VoLTE to improve revenues & user
experience
6 Radisys Corporation Confidential
Today’s Agenda
Market Dynamics
Evolution of Services from 2G, 3G to LTE / IMS
LTE Killer App – VoLTE, Video
LTE Services and System Aspects
Summary
Q&A / Wrap-up
8 Radisys Corporation Confidential
POLL Question # 1
Which service segment beyond VoLTE is most likely to
have widespread adoption in the next 2 years?
A. Multimedia
B. Video
C. M2M
D. Location Based Services
E. Rich Communication Suite
9 Radisys Corporation Confidential
Today’s Agenda
Market Dynamics
Evolution of Services from 2G, 3G to LTE / IMS
LTE Killer Apps – VoLTE, Video
LTE Services and System Aspects
Conclusion
Q&A / Wrap-up
10 Radisys Corporation Confidential
VoLTE – Role of MRF
Services in
Packet Data Network
GPRS Core
Evolved Packet
Core
Mb
Rx
ISC Mr’/Cr Mr
MMTel
AS CSCF
PGW SGW
MME
SGSN HSS PCRF
eNodeB
RNC
BSC
MRF
2/2.5G
(Getran)
3G
(UTRAN)
4G/LTE
Mo
bile
Ac
ce
ss
Netw
ork
s
IMS
Core
Internet
Corporate Intranets VoLTE requires flat All-IP media & control plane
MRF terminates media plane for supplementary services
MRF injected into media plane – under control of MMtel AS and/or CSCF
Example supplementary services: multiparty calls, IVR, RBT, other VAS
VoLTE
Media
Resource
Function
Multimedia Resource Function
11 Radisys Corporation Confidential
MRF in 3GPP IMS Architecture
Mr Mr’/Cr
Application Layer
Control Layer
Bearer/
Media
Plane
Access
Layer
Mb Mb
Mp
S-
CSCF
HSS
S-CSCF RACS PDF
PCR
F
AS
MRFC
MRFP
MGCF/ SGF IBCF
2G Wireless 3G Wireless Cable DSL WLAN PSTN 4G/LTE
Internet IBGF
SGSN/ MGW
MRF
GGSN/ BAS/ A-BGF
BSC RNC CMTS DSLAM WAG eNodeB
SGW
PGW IMS-GW
Mp
LTE
Access
Non-LTE
Access
AS AS Services
Creation
Control
• MRF Provides Media Plane Resource for All IMS Applications
• LTE and Non-LTE Access Networks
12 Radisys Corporation Confidential
LTE Built for Multiple Services
MRF for Value-Added Services (VAS)
• Multimedia conferencing
• MRBT / CRBT
• IVVR
• Mobile coupons / payment
• IP contact centers
• plus many other enhanced services…
MRF for Network Services
• Multimedia transcoding
• Voice Quality Enhancements
MRF for Content Distribution
• Multimedia content streaming
• Content advertisements
13 Radisys Corporation Confidential
MRF Characteristics in VoLTE
End to End IP (No CS Domain Voice)
• Increases and exposes network bandwidth variability from end terminals
directly to MRF (i.e., no CS-IP MGW)
Key Aspects of MRF in LTE and non-LTE Deployments
• IMS-based All-IP voice and video (multiservice MRF)
• Service continuity with legacy 2G/3G handsets (via IMS GWs)
• High availability with low latency and jitter (media quality)
• New services for increased revenues (app-independent MRF reuse)
MRF: Essential Resource for VoLTE Supplementary Services
• Network voice services (Ann, IVR, RBT)
• Two-way or multi-party (conferencing)
• Voice quality for IP mobile environment
• Media recording / Legal Intercept
• Media transcoding / adaptation
14 Radisys Corporation Confidential
1. High variability in mobile access network
2. Packet loss due to fading
3. Increased delay and echo
4. Increased number and diversity of codecs
5. Increasing need for policy-based controls
6. Increasing density and bandwidth needs
7. Coexistence of IPv6 and IPv4 in 4G / LTE
8. Managing QoS and congestion, end-to-end
9. Voice Quality Enhancements in an All-IP network
10. Reusability across diverse IMS applications
VoLTE and Video MRF – Challenges
15 Radisys Corporation Confidential
Trends and Impacts on MRF Design
Mobile Data Bandwidth
Mobile Data Bandwidth Broadband, but highly variable
QoS and Policy Enforcement
Support for 2-way Interactive Services
Support for 1-way Streaming Services
Dynamic Rate Adaptation, Adaptive Bitrates
Policy Enforcement Functions via PCRF
LTE MRF Requirements B
andw
idth
time
Evolved
Packet
Core Network
Policy Control
Resource Function
(PCRF)
2-way (RTP, RTCP) LTE Packet
Radio Access Network
IMS Core
4G IP Handsets (IPv6) Multimedia
Content
1-way (HTTP, RTMP, RTSP)
AS
Radisys Media Server
(LTE IMS MRF)
16 Radisys Corporation Confidential
Trends and Impacts on MRF Design
Mobile Applications
Mobile Applications Growing 3rd party applications and cloud
services based on network MRF services, exposed by Open APIs
Network-based MRF under 3rd party network or device applications
Growing interest in MRB
(Media Resource Broker)
LTE MRF Requirements
3rd Party
Network
Applications Device
Applications
Network
MRF
Resources
Network
MRF
Resources
Evolved
Packet
Core Network
LTE Packet
Radio Access Network IMS Core
CSCF
Media Resource Broker
(MRB)
Application
Server(s)
MRF
Resource
Pool Radisys Media Server
(LTE IMS MRF)
3rd Party
Application
Server(s)
Op
en
Ap
pli
cati
on
AP
Is
Open Application APIs
17 Radisys Corporation Confidential
Trends and Impacts on MRF Design
LTE Device Evolution
LTE Device Evolution More Devices, Increasing Capabilities
Wideband Audio Codecs
High-end Video
H.264 Video (Baseline to High Profiles)
MPEG-4
AMR-WB
… with dynamic transcoding / transrating
LTE MRF Requirements
768kbps – 3 Mbps
(Synchronous up/down)
384 kbps – 768 kbps
(Synchronous up/down) 3+ Mbps (HD) 64 kbps
Audio
Narrowband -> Wideband -> Full Band
Video
Small Screens & Low Bitrates
-> HD High Framerates
GSMA IR.92 GSMA IR.94
18 Radisys Corporation Confidential
MRF: Service Identification & Triggering
CSCF-based Service Identification and Triggering
SIP methods, URI, Headers for Filter Criteria
Ex:
MMTel or
RCS AS
Ex:
Multimedia
Conference AS
MRF MRF
Ref: 3GPP TS 23.218 IM Call Model Stage 2 Release 11
19 Radisys Corporation Confidential
3GPP Standards-Compliant Service Dispatch MRF for VoLTE / RCS Application Servers or CSCFs
MRF for MMTel AS, RCS AS, and Base Media Processing
MRF
Enhanced Services AS
MMTel / RCS
Application
Server
S-CSCF
HSS
ISC
ISC
Mr’/Cr
Mr’/Cr
Sh
Mr
1
2
1
Advanced Applications E.g., Multimedia Conference Ex:
sip:+18006660786@conf-network.com
MMTel AS invokes SIP service filters and
redirect/proxy to Advanced Application Server
2
MMTel / RCS Services (Ex: Basic 3 Party Conference or
complete Adv Conference Application) Ex:
sip:annc@mmtel-app.com
MMTel AS or CSCF invokes SIP filters and
creates / controls MRF for telephony application
service creation via SIP/SDP + XML
UE1
(SIP)
UE1
(RTP media)
3 3
Basic Media Processing (3PCC or B2BUA MRF) Ex:
sip:transcoder@media-plane.com
3PCC media transcoding between two party
connection, basic announcements, etc.
MRF can terminate media, mix media, and
act as an “inline” B2BUA
20 Radisys Corporation Confidential
MRF – Sample Call Flows (Ann and Conferencing) (Ref: 3GPP TS 23.849)
MR B
MRF AS
Home Network
S - CSCF
1 . S e s s i o n I n i t i a t i o n [ 1 ]
3 . Service Logic
2 . Session Initiation [ 1 ]
4 . Session Initiation [ 2 ]
6 . Session Failure [ 2 ]
7 . Service Logic
5 . Session Failure
12 . Play Tone / Announcement
Visited Network
1 0 . Dialogue 1 is handled normally using the information from MRF 11 . QoS and resources are reserved
8 . MRB / MRF Service Discovery : - Provisioning from VPLMN at registration or session
initiation - Configuration in HPLMN
9 a . Invoke MRF via MRB ( new leg )
9 b . Session Initiation to MRF via S - CSCF , MRF selects media resources ( new leg )
MR B
MRF AS
Home Network
S - CSCF 1 .
S e s s i o n I n i t i a t i o n ( a d - h o c c o n f ) [ 1 ]
3 . Service Logic
2 . Session Init . ( ad - hoc conf ) [ 1 ]
6 . Session Init . ( UE 2 ) [ 3 ]
16 . Establish path between UE 1 and MRF
4 . MRB / MRF Service Discovery : - Provisioning from VPLMN at registration or session
initiation - Configuration in HPLMN
7 . Session Init . ( UE 2 ) [ 3 ]
8 . Establish path between UE 2 and MRF
9 . Repeat steps 5 - 11 for UE 3 [ 4 ] , [ 5 ] 10 . Session Init . ( UE 1 ) [ 6 ]
13 . 200 OK ( UE 1 ) [ 6 ]
11 . Session Initiation ( UE 1 ) [ 6 ] 12 . 200 OK ( UE 1 ) [ 6 ]
14 . 200 OK ( UE 1 ) [ 1 ] 15 . 200 OK ( UE 1 ) [ 1 ]
Home / Visited Network
5 b . Session Initiation to MRF via S - CSCF , MRF selects media resources ( new leg 2 )
5 a . Establish session via MRB ( new leg 2 )
Play Tone
or Ann Multi Party
Conference
Mixer
21 Radisys Corporation Confidential
POLL Question # 2
Which role would you consider to be most significant
for the use of MRF in VoLTE and Video Services in LTE
Networks?
A. Basic Audio and Video Transcoding
B. Multimedia Telephony Services (MMtel)
C. Video Bandwidth Optimizations and Streaming
D. Video Sharing and Video Conferencing
22 Radisys Corporation Confidential
Today’s Agenda
Market Dynamics
Evolution of Services from 2G, 3G to LTE / IMS
LTE Killer App – VoLTE, Video
LTE Services and System Aspects
Conclusion
Q&A / / Wrap-Up
23 Radisys Corporation Confidential
eCSFB and LTE
• UE connection is handed over to UTRAN / GERAN /
1xRTT in case of CS Service (MO/MT)
• New interface SGs
• UE capability information carries RAT container list
UE E-UTRAN MMELTE-Uu S1-MME
GERAN
UTRAN
Um
Uu
SGSN
MSC
Server
SGs
Gs
A
Iu-cs
Gb
Iu-ps
S3
24 Radisys Corporation Confidential
Mobile Originating call in Active Mode - PS HO supported
• Reference 3GPP TS 23.272
• Reference 3GPP TS 23.401
25 Radisys Corporation Confidential
eMBMS and LTE
MBMS CP
MBMS UP
PDN Gateway
Contents Provider
eNB eNB
M1
SGmb
MCE F4 F2
MBMS MBMS
BMSC PDN Gateway
Contents Provider
eNB eNB
M1
M2
M3
SGmb SG-imb
MCE
MME Sm MBMS CP
MBMS UP
BMSC PDN Gateway
Contents Provider
eNB eNB
M1 M3
SGmb
MBMS MBMS
PDN Gateway
Contents Provider
eNB eNB
M1
SGmb
MCE MCE
MBMS GW
MME Sm
SG-imb
• Highly useful service for users concentrated in a geography
demanding the same content
• MBSFN Service Area, Synchronization Area, MBSFN Area defined
• Special Reference Signal, physical channel (PMCH), Transport channel
(MCH), Logical Channels (MCCH, MTCH) to support eMBMS
• Support for Multicast / Unicast cells only, no MBMS-only cell
26 Radisys Corporation Confidential
eMBMS Control and Data Plane Setup
• Reference 3GPP TS 36.300
• Reference 3GPP TS 36.331
• Reference 3GPP TS 36.213
27 Radisys Corporation Confidential
eNodeB Handling
• SystemInformationBlockType
13 carries • MBSFN Area Id
• Signaling MCS
• MCCH Scheduling information in time &
frequency domain
• Change notification
• MBSFNAreaConfiguration is
sent via MCCH to configure • MBSFN Scheduling information in time &
frequency domain
• PMCH list
• Corresponding MCS
• UE shall decode PMCH
based on MCCH
28 Radisys Corporation Confidential
Location Services and LTE
UE eNode B MME
E-SMLC
LTE-Uu S1
SLs
SLP
SUPL bearer
Proprietary
interface
possible
SET
LPPLP
Pa
• Location services to take
advantage of exact position
of the UE
• Businesses shall be able to
target customers based on
the geographic locations
• Methods for UE positioning
• LPP, LPPa, LCsAP
• Reference 3GPP TS
29.171, 36.355, 36.455
Method UE-based
UE-assisted, E-
SMLC-based
eNB-
assisted
A-GNSS Yes Yes No
Downlink No Yes No
E-CID No Yes Yes
29 Radisys Corporation Confidential
MTC and LTE
• Machine Type Communication or machine-to-machine (M2M) communication
• Variety of low-powered devices hosting apps not needing human interaction
• Security, Metering, Health management, Remote maintenance, tracking
• Initial architecture defined by ETSI Technical Committee Machine-to-Machine
communications (M2M)
• Defined interfaces & functions of M2M system independent of transport
• 3GPP introduced new interfaces to integrate MTC within the core network
• Close integration with 3GPP core network shall enable
• Combined Authentication from M2M and 3GPP
• Ease of device triggering using mapping information in MTC-IWF
• Group communication based on 3GPP services
• Integrated charging with 3GPP-based services
30 Radisys Corporation Confidential
3GPP and ETSI Combined Architecture
Reference 3GPP TS 23.682 Release 11 & ETSI TS 102 690
32 Radisys Corporation Confidential
Detailed MTC Applications Domains
Service Area MTC applications
Security Surveillance systems
Backup for landline
Physical access control (e.g., buildings)
Car/driver security
Tracking &
Tracing
Fleet Management
Order Management
Pay as you drive
Asset Tracking
Navigation
Traffic information
Road tolling
Road traffic optimisation / steering
Payment Point of sales
Vending machines
Gaming machines
Consumer
Devices
Digital photo frame
Digital camera
eBook
From 3GPP TS 22.368 Rel 11
Service Area MTC applications
Health Monitoring vital signs
Supporting the aged or handicapped
Web Access Telemedicine points
Remote diagnostics
Remote Maintenance /
Control
Sensors
Lighting
Pumps
Valves
Elevator control
Vending machine control
Vehicle diagnostics
Metering Power
Gas
Water
Heating
Grid control
Industrial metering
33 Radisys Corporation Confidential
Today’s Agenda
Market Dynamics
Evolution of Services from 2G, 3G to LTE / IMS
LTE Killer App – VoLTE, Video
LTE Services and System Aspects
Conclusion
Q&A / / Wrap-Up
34 Radisys Corporation Confidential
Unmatched Products & Expertise
Embedded
Wireless
Infrastructure
Solutions
Conclusions
VoLTE & Video over LTE • MRF plays a very key role
• Scalable, high density solutions required
Challenges & Opportunities • LTE monetization
• Interworking with 3G & legacy networks
3GPP LTE Standards • System aspects improvement
• Easy interoperability and faster rollout
35 Radisys Corporation Confidential
Q&A
Contact us!
Nitin: nitin.tomar@radisys.com
Adnan: adnan.saleem@radisys.com
Debjani: debjani.de@radisys.com
For more information on our products, visit: www.radisys.com
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