LTE Technology Overview - RevB
-
Upload
elpanaldericamiel -
Category
Documents
-
view
182 -
download
17
Transcript of LTE Technology Overview - RevB
LTE/EPC Technology overview
� LTE/EPC fundamentals� LTE/EPC architecture overview� Voice over LTE (VoLTE)
Agenda
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 2
Global LTE Commitments (May 2012)
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 3Source : www.gsacom.com
Global LTE devices
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 4Source : www.gsacom.com
LTE/EPC fundamentals
5
It’s going to be speedy
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
• 1xRTT
• 1xEVDO rA
The LTE Air Interface – LTE MIMO
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
Adaptive Modulation and Coding
UE4
64 QAM64 QAM
16 QAM16 QAM
QPSKQPSK
When will Who have What coverage Where?
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
Downlink peak data rates (64QAM)
Antenna config SISO 2x2 MIMO 4x4 MIMO
Peak data rate Mbps 100 172.8 326.4
Uplink peak data rates (Single antenna)
Modulation QPSK 16 QAM 64 QAM
Peak data rate Mbps 50 57.6 86.4
eNB
UE1
UE2
UE3
UE5
64 QAM requires 10dB Carrier to Interference ratio (C/I)64 QAM requires 10dB Carrier to Interference ratio (C/I)
LTE/EPC architecture overview
9
Uu
X2X2UE
S-GW
P-GW
S11
S5
S10
S1-U
GxPCRF
Evolved UTRAN (E-UTRAN)
Evolved Packet Core (EPC)
LTE/EPC architecture
Sgi
Public
Data
Network
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
S1-C
Evolved Node B
UE
MMES6a HSS
The LTE protocol and network architecture is charac terized by three special requirements1. Support for the PS domain only. There will be no circuit switched (CS) domain nodes.
– Voice services need to be delivered using VoIP
2. Tight delay targets for small roundtrip delays
– 5 ms for bandwidths of 5 MHz and greater ; 10 ms for the bandwidths below 5 MHz
3. Reduced cost of the system
Serving NetworkServing Network
PS Core (Data)
Evolved 3GPP Network Architecture
Core & Services NetworkCore & Services Network
CS Core (Voice)
MSC/VLR
GSM-A
GPRS-Gb
Iu-CS
Gn
GSM/GPRS/EDGE Radio Access Network (GERAN)GSM/GPRS/EDGE Radio Access Network (GERAN)
Base Station Subsystem (BSS)
BTS
MS
Abis
GSM
EDGE
Evolved EDGE
BSC
Um
UMTS Terrestrial Radio Access Network (UTRAN)UMTS Terrestrial Radio Access Network (UTRAN)
RNCIub
Iur
UuPublic
Data Gi
SS7/SIGTRAN
SGWSMS
HLR/HSS
MGWMc
Nb
D/Gr
MGW
Nc
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
SGSN
Iu-CS
Iu-PSGGSN
Radio Network Subsystem
NodeBUE
RNC
Iur
W-CDMA
HSPA/HSPA+
Iub
HSS
CSCFMRF
Data
Network
PCRF
WSP Services
(IMS, VCC, …)
RxS4
S3 Gx
SGi
S1-C
S12
Evolved UTRAN (E-UTRAN)Evolved UTRAN (E-UTRAN)
Uu
Evolved Node B
X2X2UE
LTE
LTE Advanced
Evolved Packet Core (EPC)Evolved Packet Core (EPC)
S-GW
MME
P-GW
S11
S5
S10
S6a
S1-U
EPC Fundamentals - LTE Functional Nodes
Radio Resource Management
Scheduling• Dynamic resource
allocation to UE’s• Transmission of
Pages & broadcast information
Network Access Security (PDCP)• IP header
compression• Ciphering of user
data stream
EPC Network Selection
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION Page 12
eNBeNodeB
Management• Bearer & Admission
control• RF Measurement
Reporting
Selection• MME Selection at
UE attachment• User Plane routing
to SAE-GW
Combines the functionality of the UMTS NodeB & RNC
EPC Fundamentals - LTE Functional Nodes
EPC Access
Mobility• MME Selection for
Intra-LTE handovers• SGSN Selection for
3GPP I-RAT Handover
UE Tracking and Reach-ability• Tracking Area List
Management (idle or active)
Bearer management
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION Page 13
MMEMobility
Management Entity
• Attachment & Service Request
• Security & Authentication
management• Dedicated bearer
establishment• PDN GW & SAE-GW
selection
Equivalent to the SGSN for the Control Plane
EPC Fundamentals - LTE Functional Nodes
Packet routing &
Local Mobility Anchor for Inter eNB handover
I-RAT Mobility Anchor Function• 3GPP 2G/3G Handover• Optimized Handover
Procedures (e.g. in LTE-CDMA)
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION Page 14
S-GWSAE Gateway
Packet routing & forwarding
between EPC & eUTRAN
Lawful Interception
Equivalent to the SGSN for the User Plane
EPC Fundamentals - LTE Functional Nodes
Policy enforcement
(QoS)
Charging support
Lawful Interception
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION Page 15
P-GWPDN Gateway
UE IP address allocation
Mobility Anchor between 3GPP & non-3GPP
access systems
Equivalent to the GGSN
UEUE eNBeNB SS--GWGW PP--GWGW Peer Peer
E-UTRAN EPC Internet
LTE – It’s all about pipes
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
UEUE eNBeNB SS--GWGW PP--GWGW Peer Peer EntityEntity
Ext. BearerExt. Bearer
S5 BearerS5 Bearer
S1 BearerS1 Bearer
Radio S1 SGiS5/S8
End to End Service End to End Service –– IMS Control and User PlanesIMS Control and User Planes
EPS BearerEPS Bearer
EE--RABRAB
Radio BearerRadio Bearer
EPC Fundamentals – QoS Model
Today’s 3G Services use best effort QoS Classes parameters for all PS servicesToday’s 3G Services use best effort QoS Classes parameters for all PS services
• An LTE user can have up to 24 bearers , each with its own QoS Class• In the EPC, the QoS parameters are a function of guaranteed & non-guaranteed bit rates defined by 9
QCI labels.
Page 17
QoS Class QoS Class IdentifierIdentifier
L2 Packet L2 Packet Delay Delay
BudgetBudget
L2 L2 Packet Packet Loss Loss RateRate
Example ServicesExample Services
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
BudgetBudgetRateRate
QCI=1 (GBR) 100 ms 10-2 Conversational Voice
QCI=2 (GBR) 150 ms 10-3 Conversational Video (Live Streaming)
QCI=3 (GBR) 50 ms 10-3 Real Time Gaming
QCI=4 (GBR) 300 ms 10-6 Non-Conversational Video (Buffered Streaming)
QCI=5 (non-GBR) 100 ms 10-6 IMS Signalling
QCI=6 (non-GBR) 300 ms 10-6Video (Buffered Streaming)TCP-based (e.g., www, e-mail, chat, ftp, p2p file sharing, progressive video, etc.)
QCI=7 (non-GBR) 100 ms 10-3 Voice, Video (Live Streaming) Interactive Gaming
QCI=8 (non-GBR) 300 ms 10-6
Video (Buffered Streaming)TCP-based (e.g., www, e-mail, chat, ftp, etc.)
QCI=9 (non-GBR) 300 ms 10-6
EPC Fundamentals – QoS Model
RB-ID S1-TEID S1-TEID S5/S8-TEID
UL Service Data Flows DL Service Data Flows
Application / Service Layer
Non GBR – Service Dropping
Non Real-Time
Page 18Page 18
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
PDN -GWSGWeNBUE
UL-TFT RB-ID S5/S8-TEI DL-TFT
GBR – Service Blocking
Real TimeTFT = Traffic Flow Template
Radio Bearer
S1 Bearer S5 Bearer
LSTI test results
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
LSTI test results
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
LSTI test results
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
LSTI test results
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
Voice over LTE
� Voice has always been a backbone service for most of the operators ensuring a steady and healthy revenue stream.
� The actual situation for Voice Standards and Voice Delivery in LTE has for a long time been a source of heated debate, the complexities of delivering Voice has by some been exaggerated and by some underplayed.
� In this session some of the realities and facts will be discussed and some of the areas with inherent complexities will be examined to further understand how these can be managed.
Voice over LTE (VoLTE)Abstract
© 2011 JDS Uniphase Corporation
NSD Mobile LTE SAE Technical Overview
Analytics Anywhere Everywhere
Copyright 2010-2011
Voice over LTE (VoLTE)
“The Talking Pipes” - Unraveling the Complexities
LTE World Summit 2011Page 24Page 24
� Device– “All in One” Smarts
– Basic Voice, SMS, and Add-ons Services
� Applications and Services– Stay Connected – Anywhere, Everywhere and Be Seen as Connected – Presence
– Productivity (Mobile Office), Networking, Chats, Payments, Gaming, Internet Browsing, Video
� Affordability
Consumer’s ViewKey Performance Indicators
© 2011 JDS Uniphase Corporation
NSD Mobile LTE SAE Technical Overview
Analytics Anywhere Everywhere
Copyright 2010-2011
Voice over LTE (VoLTE)
“The Talking Pipes” - Unraveling the Complexities
LTE World Summit 2011Page 25Page 25
� Affordability – “Unlimited” Price Plans without worrying about incurring additional charges without notifications
– “Tiered” pricing in terms of Application Awareness, Spending Limits Gating and QoS control
� Living the Mobile Broadband Experience – Accessibility, Retainability, Integrity , Availability, Mobility
� Specific to Voice– Per current Circuit Switch (CS) Voice experience in terms of the above mentioned indicators at
equal or less cost as compared to GSM and UMTS, e.g.
• Lower or Equal Call Setup times with similar Quality
ComponentsComponents
Device
(IMS Agent/Codec)
Device
(IMS Agent/Codec)
E-UTRANE-UTRAN
Functions and Applications
Functions and Applications
Basic ConnectivityBasic Connectivity
Additional ServicesAdditional Services
KPI CategoriesKPI Categories
AccessibilityAccessibility
QoS ValidationQoS Validation
SubscribedSubscribed
Voice over LTEService Delivery
© 2011 JDS Uniphase Corporation
NSD Mobile LTE SAE Technical Overview
Analytics Anywhere Everywhere
Copyright 2010-2011
Voice over LTE (VoLTE)
“The Talking Pipes” - Unraveling the Complexities
LTE World Summit 2011Page 26Page 26
E-UTRAN
(E-UTRA)
E-UTRAN
(E-UTRA)
Evolved Packet Core
Evolved Packet Core
Policy ControlPolicy Control
IMS Core Network IMS Core Network
TransportTransport
Additional ServicesAdditional Services
MobilityMobility
RoamingRoaming
Non-LTE AccessNon-LTE Access
PrioritizedPrioritized
EmergencyEmergency
IntegrityIntegrity
RetainabilityRetainability
MobilityMobility
AvailabilityAvailability
ProvisionedProvisioned
Shaped/Gated/ Prioritized
Shaped/Gated/ Prioritized
UtilizedUtilized
ExperiencedExperienced
Voice over LTE (VoLTE)Evolution Path - Features
Voice over LTE via Generic
Access (VoLGA)
RoamingInterconnect
GSMA IR.65/88Emergency
Voice over HSPA (VoHSPA)
GSMA IR.58
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
CS Voice overCS or PS (HSPA)
CS FallbackSMS over
SGs
Voice over LTE(VoLTE)
SMS over IPGSMA IR.92
Single Radio Voice Call Continuity
GSMA IR.64[Reference: GSMA]
Over the Top(OTT)
E.g. Skype etc.
Video over LTE(V2oLTE)
GSMA IR.94
Single Radio Video Call Continuity
Voice over LTE (VoLTE)Evolution Path - Deployment
• Voice via OTT (E.g. Skype etc.)
• CS Fallback to Legacy Access
• SMS over SGs (3GPP Legacy Accesses) and S102 (non-3GPPP Legacy Accesses)
• Voice over LTE (VoLTE)• SMS over IP (SMSoIP)• Single Radio Voice Call
Continuity (SRVCC)
OptimizedOptimized • Video over LTE (V2oLTE)
• Voice over HSPA• Emergency• Preemption and
Prioritized Access• Single Radio Video Call
Continuity (vSRVCC)
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
Legacy Accesses)
EssentialsEssentials
Continuity (SRVCC)
• Potential Throttling of OTT-based Voice options for Added Differentiation
• Others include Rich Communication Suite ((e)RCS) Introduction
Continuity (vSRVCC)• Roaming and
Interconnect• PS Handover (Voice
and/or non-Voice)• Enhanced Multimedia
Priority Service (eMPS)
EvolvedEvolved
LTE
LTEGERANUTRAN
LTE
GERAN/UTRAN
LTE
GERAN/UTRAN
LTE
LTE
UTRAN
Radio Access Evolution evolution stork evaluation
Spotty LTE coverage
Areas withcontinues LTE coverage
No LTE coverage
LTE
Voice over LTE (VoLTE)Evolution Path – Radio Access
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 29
LTE LTE LTE
Circuit Switched
CSFBCircuit Switching
VoLTESRVCC
Circuit SwitchedPacket Switching
VoLTEVoHSPA
Packet Switching
Operators will follow different paths
� EPS Attach Procedure
– 6+ Interfaces
– 8+ Protocols
– 19+ Transactions
� Mobility increases complexity
– MME / SGW Relocations
– 2G I-RAT
– 3G I-RAT
Voice over LTEAccessibility - Attach and PDN Connectivity
© 2011 JDS Uniphase Corporation
NSD Mobile LTE SAE Technical Overview
Analytics Anywhere Everywhere
Copyright 2010-2011
Voice over LTE (VoLTE)
“The Talking Pipes” - Unraveling the Complexities
LTE World Summit 2011Page 30Page 30
– 3G I-RAT
– CSFB
– SRVCC
� Additional Functions
– IPv6 Stateless Address Auto Configuration (SLAAC)
– Infrastructure Domain Name System (DNS)
[3GPP TS 23.401]
It takes the whole end to end network to deliver an
application/service to the end user.
� Policy and Charging Control (PCC)
– Mediates between IMS CN SS and EPS for Voice Service delivery over LTE
Policy and
Charging Control
E-UTRAEPCIMS CNEPCE-UTRA
Cell
Selection
Originating UE Core IMSeNB MME Terminating UE
I
D
L
E
T
O
A
C
T
S-GW/P-GW S-GW/P-GW
MME eNB
UE in IDLE
(default EPS bearer
established)
UE in IDLE
(default EPS bearer
established)
Start Timer
UE Triggered Service Request Procedure
(establishment of S1 and Radio bearers for IMS
signalling)
(3GPP TS 23.401, section 5.3.4.1)
Random Access Procedure
(establishment of RRC connection)
(3GPP TS 36.300, section 10.1.5)
I
D
L
E
T
O
P-CSCF P-CSCF
Voice over LTEAccessibility - Services Access
© 2011 JDS Uniphase Corporation
NSD Mobile LTE SAE Technical Overview
Analytics Anywhere Everywhere
Copyright 2010-2011
Voice over LTE (VoLTE)
“The Talking Pipes” - Unraveling the Complexities
LTE World Summit 2011Page 31Page 31
I
V
E
SIP 180 RINGING
C
A
L
L
S
E
T
U
P
SIP INVITE (SDP offer)
Resource Reservation (Dedicated Bearer Activation
Procedure 3GPP TS 23.401, section 5.4.1)
A
C
T
I
V
E
C
A
L
L
S
E
T
U
P
Network Triggered Service Request Procedure=
paging+UE Triggered Service Request Procedure
(establishment of S1 and Radio bearers for IMS signalling)
(3GPP TS 23.401, section 5.3.4.3)
SIP INVITE (SDP offer)
Resource Reservation (Dedicated Bearer Activation
Procedure 3GPP TS 23.401, section 5.4.1)
TOTAL CALL SETUP DELAY
Stop TimerSIP ACK
SIP 200 OK (SDP answer)
Interworking of
Multiple Devices, Domains, Network Elements, Interfaces, Protocols
[3GPP TS 23.203]
Voice over LTEE2e Complete Visibility
Multiple Dimensional Information Correlation, Measu rements and Analysis– Devices, Domains, Network Elements, Interfaces, Protocols
– Intra and Inter Layers
– Applications, Device and Network Elements Internals
User DeviceUser
DeviceAir
InterfaceAir
InterfaceNetwork
EquipmentNetwork
EquipmentNetwork
InterfacesNetwork
Interfaces
E2e Complete Visibility
E2e Complete Visibility
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
– Applications, Device and Network Elements Internals
Serving GW PDN GWS5/S8
UDP/IP UDP/IP
RelayPDCP
RLC
MAC
IP
TCP/UDP
UDP/IP
PHY
GTP-U
SGi/GmS1-UGmeNodeB
RLC
UDP/IP
PDCP
Relay
UE
GTP-UGTP-U
PHYPHYPHYPHYPHY
MAC
GTP-U
DATA DATA DATA DATA
IPSec ESPIPSec ESP IPSec ESP
PDCP Ciphering (UP)
IPSec Encryption (NDS)
IPSec ESP
SIP/SDP
IPSec Encryption (AKA)
P/S-CSCF
IP
PHY
IP
Cx
DATA
IPSec ESP
IPSec ESP
TCP/UDP
SIP/SDP
PHY
DATA
HSS
IP
PHY
SCTP
DATA
IPSec ESP
Diameter
IP
IPSec ESP
IP
PHY
SCTP
DATA
IPSec ESP
Diameter
SigComp SigComp
SigComp (SIP/SDP)
IPSec ESP
LTE/SAE – IMS CN SS Protocol Stack Signaling (SIP/SD P)
� 3GPP Release 9 baseline
– Introduced as part of Release 9, hence Not possible with Release 8
� Prioritized Access, Barring, Admission Control and Pre-emption
– Access and Non-Access Stratums
� Overload Control
– E2e E-UTRAN, EPC
� Security
– Unauthenticated IMSI
– Limited Service Mode (LSM)
Voice over LTEPublic Safety
KPI Categories
(Emergency Calls Context to be taken into Considerations)
KPI Categories
(Emergency Calls Context to be taken into Considerations)
AccessibilityAccessibility
© 2011 JDS Uniphase Corporation
NSD Mobile LTE SAE Technical Overview
Analytics Anywhere Everywhere
Copyright 2010-2011
Voice over LTE (VoLTE)
“The Talking Pipes” - Unraveling the Complexities
LTE World Summit 2011Page 33Page 33
– Limited Service Mode (LSM)
� Emergency Configuration Data Provisioning
– APN, QoS profile, PDN GW Identity etc.
– PGW Selection
– Default Bearer QCI is per Operator configuration
� Policy and Charging Control (PCC)
� Mobility
– Handover Restrictions Bypass for Emergency Bearers
� Legacy Accesses Fallback
– CS Fallback
– Single Radio Voice Call Continuity (SRVCC)
IntegrityIntegrity
RetainabilityRetainability
MobilityMobility
AvailabilityAvailability
� Service-based Top Down Analysis and Summarization
– Voice Call Success/Drop Rates, Quality
� Network-wide Events, Alarms Correlation and Analysis
– Analyzing fragmented, multi-ordered cascaded events could be tedious and time consuming
– Pinpoint Specific “Events of Interest” and Triggering Network Element
– Events of Interest can be Failures, Latency, Packet Loss, Inactivity Timeout, Congestions etc.
– Examine Relativity On-demand, e.g.
• Specific failures with certain device types
Voice over LTEUnraveling the Complexities
© 2011 JDS Uniphase Corporation
NSD Mobile LTE SAE Technical Overview
Analytics Anywhere Everywhere
Copyright 2010-2011
Voice over LTE (VoLTE)
“The Talking Pipes” - Unraveling the Complexities
LTE World Summit 2011Page 34Page 34
• Specific failures with certain device types
• Failure to establish PDN connectivity due to IPv6 address assignment failures
• Time to access service too long, figuring out the long pole, e.g. DNS optimization
• Ciphering issues resulting in “squeaky” tones
• Call and Services Preempted due to Emergency Scenarios
• Call Attempt Failures due to RAN Congestion
MSF LTE IOT Event 2010
First LTE IOT event executed in March-2010– World’s First Large-Scale LTE Multi-Vendors EPC IOT Event
– Focuses on validating core network interfaces to ensure multi-vendor deployment strategies for LTE technology
– Introduces Robustness Testing as an Industry First Forum to include Security Validation, aiming to uncover unknown Security Vulnerabilities
Focus areas– Basic Interoperability
– Roaming
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
– Roaming
– 3GPP Legacy Access
– Handover/Relocation
– Non-3GPP (eHRPD) Access and Interworking
– Robustness
MSF LTE IOT Event 2010 White Paperhttp://www.msforum.org/interoperability/MSF%20LTE%20Interoperability%202010%20White%20Paper.pdf
Voice over LTE (VoLTE)MSF & GSMA VoLTE IOT Event 2011
Builds on initial LTE IOT event from March-2010– Complexity of the IMS standards => “OneVoice” initiative => GSMA VoLTE
– Inefficiencies in the radio interface standards => shared channels, smaller TTIs, semi-persistent scheduling, TTI bundling, E2e QoS support etc.
Focus areas– Voice over LTE
• Compliant to GSMA PRD IR.92
– Roaming and Interconnect
• Compliant to GSMA PRD's IR.65 and IR.88
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
• Compliant to GSMA PRD's IR.65 and IR.88
– GERAN/UTRAN Access to EPC
– Handover/Relocation
– Self Organizing Networks/Automatic Neighbor Relation
– Robustness Testing
MSF LTE VoLTE IOT Event 2011 White Paperhttp://www.msforum.org/interoperability/MSF_VoLTE%20_2011_WhitePaper.pdf
VoLTE/RCS MSF & ETSI, GSMA VoLTE/RCS IOT planned Event 2012
Builds on VoLTE IOT event from 2011– Adding RCS v5.0 to the infrastructure under test
Focus areas– Home/Single Network
• GSMA PRDs IR.92 & IR.90
– Roaming• GSMA PRDs IR.65, IR 88, IR.92 & IR.90
– Interconnect• GSMA PRDs IR.88, IR.92, IR.90 and IR.67
IMS Core
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
• GSMA PRDs IR.88, IR.92, IR.90 and IR.67
– Non-LTE Access
– Mobility
– Inter-RAT Priority Call Handover
IMS UA
MME
S-GW
HSS P-CSCF
P-GW
PCRF
UE
eNodeB
IMS Core
LTE-Uu S11
S5
Gx
SGi
Rx
S6a
S1-MME
S1-U
I/S-CSCF
MMTel / RCS Application
ServersSh
Mw
ISC
Cx
Ut
Sec-GW
DRAS6a
ShCx
Rx
Gx
IMS UA
UE
UTRAN
GERAN
S4 SGSN
S3
S4S12
S6d
IMS UA
UE
IBCF/TrGWMx
ENUM Server
ENUM
ENUM
Other PLMN
Ici/Izi
Ici/Izi
ENUM
IPX
Voice over LTESummary
� Voice Service Delivery over LTE introduces significant increase in complexity as compared to legacy CS Voice with requirements spanning across devices, domains, network elements, interfaces and protocols
– It is Essential to perform Interoperability Tests (IOT) between Multiple Network Element Vendors and Multiple Wireless Service Providers to ensure the full End-to-End service functions as expected
� Contextual Measurements and KPI taking into consideration of Relative QoS Prioritization and Preemption esp. with Congestion and Overload, Emergency Services scenarios
– Without this, the risk is that the real customer experience will not be fully understood
© 2011 JDS Uniphase Corporation
NSD Mobile LTE SAE Technical Overview
Analytics Anywhere Everywhere
Copyright 2010-2011
Voice over LTE (VoLTE)
“The Talking Pipes” - Unraveling the Complexities
LTE World Summit 2011Page 38Page 38
� Service delivery challenges are not unique to VoLTE as they are fully applicable for all subscriber, devices, services management
� Public Safety usage of LTE (2012+)– NIST is one driver (US)
– Strong driver for QoS and Policy Control
� Network Sharing (2012+)– LightSquared, US
– Everything Everywhere,UK
Next wave of Technology after initial basic LTE
� Cloud based RAN access (2014+)– NSN Liquid Radio
– ALU lightRadio
– CMCC Cloud RAN
� Significant Network scalability, e.g. Internet of Things (2015+)
– 50B connected devices 2020
LTE Evolution and UsageSub waves
Technology evolutions
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
– Everything Everywhere,UK
– Scartel/Yota, Russia
– Telenor/Tele2, Sweden
� Core Network Consolidation (2013+)– SAE Core used for LTE, UMTS and
GPRS
– IMS used as converged CS platform
� LTE Femto (2013+)– Increased capacity and coverage
� LTE Advanced (2015+)– Increased peak performance
– 50B connected devices 2020
� Heterogeneous Networks (~2015+)– Referred to as HetNet
– Multiple Radio Access technologies including small cells co-operating to deliver best experience and capacity
– Required to manage data volume expected by 2015 – 2020. Even when significantly more spectrum is made available for LTE
Note that only HetNet represent atechnology discontinuity. The others are evolutions of LTE
JDSU Worldwide LTE Customer Presence
© 2012 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION
� Helping all major network Equipment manufacturers realize LTE
� Helping operators trial and evaluate LTE on every continent
� Committed to stay ahead of the technology wave and lead the industry
� Playing an important part in LSTI