kpis for energy efficiency network measurements -...
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KPIs for Energy Efficiency Network measurementsNetwork measurements
Erik Friman, [email protected]
1st ETSI TC EE Workshop
20-21 June 2012 , Genoa Italy KPI – Key Performance Indicator
Outline
› Introduction
› Drivers for Quality of Experience KPIs
– Traffic and application evolution
› QoS and QoE measurement scenarios
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 2
– Standardization QoE KPI for Video on demand
› Conclusion
IntroductionWhy measure EE on networks?
› Valuable for both mobile operators
and vendors to compare
– impact of EE features
– different architectures
› e.g. macro vs. HetNet vs. C-RAN deployment etc.
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 3
›
deployment etc.
› Strong political interest
– Industry need to show progress or face governmental mandates to reduce energy use
IntroductionChallenges to make a fair comparison› Comparing EE of networks between countries difficult:
– Population densities variation
– Geography – e.g. Netherlands vs Switzerland
– …
› Comparing EE of networks between standards difficult:– Different spectrum bands and bandwidths
…
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 4
–
– …
› Comparing EE of networks carrying different traffic mix difficult– chatty traffic more power consuming than constant bit rate traffic
(video, voice)
– …?
A B
Outline
› Introduction
› Drivers for Quality of Experience KPIs
– Traffic and application evolution
› QoS and QoE measurement scenarios
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 5
– Standardization QoE KPI for Video on demand
› Conclusion
Traffic evolutionTo
tal (U
L+
DL
) m
on
thly
tra
ffic
Pe
tab
yte
/m
on
th Data is the most interesting traffic for EE measurement
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 6
› Data traffic increases ~ doubles every year
› Voice traffic increases or almost constant
To
tal (U
L+
DL
) m
on
thly
tra
ffic
Pe
tab
yte
/m
on
th
Source: [1] Ericsson; Akamai, Q4 2011 State of the Internet Webinar May 10, 2012http://evt.dispeak.com/akamai/soti/soti-may12-a/Q4-2011-SotI-Webinar.pdf
Data Traffic volume per Application and usage; iPhone
Other
Social netw.
Web
�������
Encrypted
iTunes
Tra
ffic
vo
lum
e s
ha
res
100%
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 7
Energy consumption depends on Traffic mix and Clients
���
iTunes
Web radio
HTTP video
Tra
ffic
vo
lum
e s
ha
res
0%
Heavy usersLight users
Source: [1] Ericsson; Akamai, Q4 2011 State of the Internet Webinar May 10, 2012http://evt.dispeak.com/akamai/soti/soti-may12-a/Q4-2011-SotI-Webinar.pdf
› PC dongles, Pads and Android phones show similar but
some different traffic mix (ref. [2], [3] and [4])
Energy consumption depends on Traffic mix and Clients
How measure EE?
› Energy / Bit › Energy / Bit / Hz
Control channel
overhead
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 8
Small � High EE
Large � Low EE
DataCtrl
DataCtrl
10 20 MHz BW
Network A
Network B
The EARTH utility function provides a method for comparing
How measure EE?
Performancerequirements
QoS requirements?
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 9
AddQoE requirements?
› Throughput only one important component for the end user QoE
› Applications have very different service quality demands– Voice & video have strict latency requirement
– Other applications are delay tolerant –pushed content to UE etc.
QoE KPIs are important indicators of performance
Outline alternative
› Introduction
› Drivers for Quality of Experience KPIs
– Traffic and application evolution
› QoS and QoE measurement scenarios
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 10
– Standardization QoE KPI for Video on demand
› Conclusion
QoS measurement scenarioThroughput based KPI
Internet
Throughput KPI
Counters
EventsOSS/NMS
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 11
› Measured data from RNC, RBS, SGW collected by OSS
› Throughput data is selected
RANPacket
core
Internet
Server
Counters
Events
QoE measurement scenarios
QoE model
Internet
KPI
OSS/NMS
1,2 Measurement points
3
User
reporting
4 Standardization
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 12
RANPacket
core
Internet
Server
1 1 2
3
Deep
Packet
Inspection
Counters
Events
Terminal
reporting
Network probing
Internet
OSS/NMS
1
QoE model
KPI
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 13
› Deep Packet Inspection, DPI of IP packet header for
application identification
› Probes needs to be updated with new application
RANPacket
core
Internet
Server
Probing implementations› GGSN DPI
– IP header in GGSN is checked
– Filtered packets sent to server for analyses
› DPI on separate node
GiGn
1
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 14
GGSN
Packet filtering activated,
Juniper J-Flow software (example)
Server with
Traffic Analyzer software
GiGn
Examples:
Server
…
DPI on any
interface – one
vendor example
Terminal reporting
OS
App
Internet
2Special designed App
for EE measurements?QoE model
KPI
OSS/NMS
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 15
› 3GPP MDT, Minimization of Drive Test – QoS reporting part
– User consent needed, might imply low penetration
– Measurement parameters suitable for EE measurements?
RANPacket
core
Internet
Server
› App designed for EE measurements – standardized?
User reporting
OS
App
Internet
3Special designed App for
User reported QoE?QoE model
KPI
OSS/NMS
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 16
› 3GPP MDT, Minimization of Drive Test – QoS reporting part
– User consent needed, might imply low penetration
– Measurement parameters suitable for EE measurements?
RANPacket
core
Internet
Server
› App designed to support user reported QoE?
Compare with MOS measurements!
Video QoE example: ITU-T modelP.1201 (P.NAMS)4
Fast accessenables short time to fill buffer
Re-buffering?
MbpsVideo service
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 17
Time
P.1201 model used to estimate video QoE
Parameters in the model (subset)› Video Codec (H.264, etc.)
› Format: Video resolution QCIF, HVGA, …)
› Bitrate: coded video bitrate (kbps)
› Packet loss information: lost packets for video sample (~16 sec).
› Buffering events: Freezing of the video
Outline
› Introduction
› Drivers for Quality of Experience KPIs
– Traffic and application evolution
› QoE measurement scenarios
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 18
– Standardization QoE KPI for Video on demand
› Conclusion
Conclusion
› Quality of Experience KPIs are possible to be used
› Several measurement alternatives are available
› Video QoE models are being standardized – other
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 19
› Video QoE models are being standardized – other
applications in process
› A KPI to be used for Energy Efficiency measurement of
networks needs to be agreed upon
QoE KPIs are important indicators of performance for Network Energy Efficiency measurements
References
› [1] Akamai, The State of the Internet 4th Quarter, 2011 reportVolume 4, Number 4, http://www.akamai.com/stateoftheinternet/
› [2] Akamai, Q4 2011 State of the Internet Webinar May 10, 2012http://evt.dispeak.com/akamai/soti/soti-may12-a/Q4-2011-SotI-Webinar.pdf
› [3] Ericsson: Ericsson predicts Mobile Data Traffic to grow 10-fold by 2016Press Releases, Reports Nov 7, 2011: New report from Ericsson says mobile data traffic will grow 10-fold between 2011 and 2016, mainly driven by video Mobile broadband.
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 20
grow 10-fold between 2011 and 2016, mainly driven by video Mobile broadband.
› [4] Ericsson: Traffic and Market Data Report: On the pulse of the
Networked Society, http://hugin.info/1061/R/1561267/483187.pdf
› [5] ITU-T Study Group 12 (Study Period 2009-2012) Performance, QoS
and QoE http://www.itu.int/ITU-T/studygroups/com12/index.asp
Thank You!
Energy Efficiency KPIs for network measurements | ETSI WS Genova 2012 | 2012-06-20 | Page 21
Thank You!