The LTE Service Layer

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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


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


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


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


Today’s Agenda

Market Dynamics


LTE Killer App – VoLTE, Video


Summary

Q&A / Wrap-up


Evolution of Services: 2G & 3G

Radisys ATCA 12U

Radisys ATCA 6U


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


Today’s Agenda

Market Dynamics


LTE Killer Apps – VoLTE, Video


Conclusion

Q&A / Wrap-up


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


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


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


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


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


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)



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



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


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


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:[email protected]

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:


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:


3PCC media transcoding between two party

connection, basic announcements, etc.

MRF can terminate media, mix media, and

act as an “inline” B2BUA











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


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


Today’s Agenda

Market Dynamics




Conclusion

Q&A / / Wrap-Up


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


Mobile Originating call in Active Mode - PS HO supported

• Reference 3GPP TS 23.272



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


eMBMS Control and Data Plane Setup





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


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


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


3GPP and ETSI Combined Architecture

Reference 3GPP TS 23.682 Release 11 & ETSI TS 102 690


LTE-Only Integration for MTC


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


Today’s Agenda

Market Dynamics




Conclusion

Q&A / / Wrap-Up


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

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


Q&A

Contact us!

Nitin: [email protected]

Adnan: [email protected]

Debjani: [email protected]

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The LTE Service Layer