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LSTI –Boosting LTE for Mobile Broadband Deployment
Christian Kuhlins, Ericsson AB
Chairman LSTI IOT Activity Group
Remi Thomas, FT Orange
Director of the LTE EPC Programme at France Telecom
The Journey From Testing Prototypes
To Testing Real Products
EPCeNBUu
Interoperability Development
Testing - IODT
Standard compatible
prototypes
S1 S1
X2
EPC
eNB eNB
Uu
Interoperability Testing
IOT
Standard compatible product
platforms to reach the market
First LTE Devices And Networks Interoperating
”Vendor A
to report:
successful test
with two
different Ue
vendors B&C!”
S1 S1
X2
EPC
eNB
Vendor AeNB
Vendor A
Uu
IOT Uu
Ue
Vendor B & C
Multi-Vendor Network Configurations Interoperating
S1 S1
X2
EPC
Vendor BeNB
Vendor A
eNB
Vendor A
Uu
IOT S1
”Vendor A
to report:
successful test
with another EPC
vendor B!”
S1 S1
X2
EPC
eNB
Vendor A
eNB
Vendor B
Uu
IOT X2
”Vendor A
to report:
successful test
with another eNB
vendor B!”
LTE/SAE -
Becoming A Mature Technology For Mobile Broadband
From Standardisation……to Commercial Rollout
InteroperabilityInteroperabilityIODT: Close to completion
IOT: First results for Air Interface
and S1&X2 interface delivered
Friendly Customer TrialsFriendly Customer TrialsActive Trials
delivering first results
Proof of ConceptProof of Concept Proof of Concept completed
LSTI Friendly Customer Trials (FCT)
Consolidated Test Methods For LTE
• Common recommendations for set-up of Trial Networks
• Common definition of Key Performance Indicators
• Common generic procedures for Trial Configuration
• 42 test specifications grouped in 13 testing domains
• Set of methodologies according to NGMN Field Trial
Requirements
• LSTI FCT split in 2 Trial Phases:
• Radio Access testing allowing non-commercial or
simulated EPC solutions
• Integration with EPC & E2E using fully “commercial”
network platform
10 Operators perform LSTI Trials
LSTI Trials started:
Architecture Of A Typical Trial Network
HSS PCRF
Serving
Gateway
PDN
Gateway
MME
EPC
S1-MME
S1-U
Performance Monitoring
OAM
FTP/UDP
Application Servers
Video
StreamingWEB
SGi
Protocol Analyzer
eNB traces
UE
Mobile trace tool
Fiber
7 Operators Already Delivering Trial Results
Test cases:
• Latency
• StateTransitions
• Throughput
• Cell Capacity /
Cell Load
First Results Meet Expected Performance Levels
Latency First LSTI FCT Trials
demonstrate that LTE can
deliver a very low latency
experience; this enables
even the most demanding
applications such as online
gaming.
Application ServerEPC
eNB
UE
Measured Round Trip Times
Trial Results
U-Plane: Measured Round Trip Times (32Byte)
Non-scheduled
ms0 5 10 15 20 25 30
End – End
ping
PoC Results
First Results Meet Expected Performance Levels
Throughputs
• The measured peak rates for FDD & TDD normalized to
20 MHz meet or exceed the NGMN Field Trial expectations
of at least 100 Mbps for downlink & 30-50 Mbps on uplink.
• The throughput depending on radio link quality (single UE
testing) indicates a good alignment between 6 different
trials.
Plans Are Defined For E2E Performance Testing
• Both Radio Access testing and End to End testing
phases are planned throughout 2010 for most of LSTI
Operators.
• On a test domain per test domain basis, the LSTI FCT
group will analyse detailed results and elaborate an
explicit message to the industry.
• Performance levels and main relating testing conditions
will then be displayed for sustaining the LTE-EPC
ecosystem.
14
Thank You
www.lstiforum.org
