Netradar introduction

Report
Netradar(.org, .com)
Jukka Manner
Professor, PhD., Aalto University
[email protected]
Background
• Service to measure mobile networks using crowd sourcing
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Users measure their connection
“User” = consumer, researcher, government official, consultant, etc.
Anonymous (but you can use a Google login to go back to your measurements)
• Measurements based on best scientific practices
• Aggregate data provides a user-based view on
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The actual coverage and quality of mobile networks
Performance of different mobile devices (these have differences!)
• Consumers get their measurement results
• Researchers use the data for various studies
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Data sets have been given to individual researchers for study
Researchers have done their own measurements and gotten their own raw data
• Consumer analytics on the web site www.netradar.org
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Coverage maps
In the near future also device comparisons, personalized network quality in my area,
customer satisfaction analysis (speed, operator, device), etc.
2/10
Background
• Years of development at Aalto University
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Initial designs in 2010
First prototypes in 2011
Launched in Finland 14.6.2012
Global launch 6.3.2013
• Current measurement points
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Netradar: distributed globally (servers in EU, US and Asia)
Nettitutka: Finnish national trial, in FUNET and Aalto campus network
• Whole server infrastructure and data bases heavily distributed
• Measurement servers protected from overload
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Queues users if needed
Provides very trustworthy results
• Promoted by the Internet Society since July 2014:
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http://www.internetsociety.org/blog/tech-matters/2014/07/help-us-understandglobal-internet-experience-download-netradar-today
3/10
Runs on all mobile platforms
1. Android
2. iOS
3. Windows Phone
4. Symbian (Belle)
5. Meego/N9
6. Sailfish/Jolla
7. Blackberry
8. Nokia X (Android-platform)
4/10
Current statistics
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As of September 2014
142’000 client application downloads
4700 different mobile device models
3’640’000 measurements
• Each measurement has over 500 data points,
total data base has over 2 billion data points
5/10
Measurements
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10.
Signal quality and strength
Download/upload speed (sustainable and peak TCP, a 10 second test)
Detailed TCP metrics throughout the connection (server side)
Latency (UDP)
Location (GPS, cellular, IP address and WIFI positioning)
Base station information
Cellular technology
Operator name, country (MNC, MCC)
Device information (hardware, operating system)
Customer experience (Q2/2014)
6/10
Netradar radio details
(platform dependent)
A. GSM
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Cell ID
Received Signal Strength Indicator (RSSI)
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Arbitrary Strength Unit (ASU)
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dBm
B. UMTS
• Cell ID
• Received Signal Code Power (RSCP)
– Arbitrary Strength Unit (ASU)
– dBm
• Ec/No (received energy per chip divided by total noise power density)
C. LTE
• Cell ID
• Received Signal Receive Power (RSRP)
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Arbitrary Strength Unit (ASU)
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dBm
• Received Signal Reference Quality (RSRQ)
• Channel Quality Indicator (CQI)
• Reference Signal SNR (RSSNR)
7/10
Data transfer measurement
Slow-start phase
Sustainable throughput
8/10
What speed to report ?
Over 10 Mbps or 5.3 Mbps ?
9/10
Publications so far
• Published
1. Sonntag, Schulte, Manner, Mobile Network Measurements - It's not all
about Signal Strength, IEEE WCNC, 2013.
2. Sonntag, Suomi, Economic feasibility of multipath protocols in mobile
Internet of Things applications, Concurrency and Computation: Practice
& Experience, 2013. Vol. 26.
3. Sonntag, Manner, Schulte, Netradar - Measuring the Wireless World,
WiNMEE, 2013.
4. Schulte, Manner, Moktam, Särelä, Towards Understanding Interruption
and Reordering in HSPA/HSPA+ Networks, IEEE WiMob, 2014.
• Many in the pipeline (2 journal, 2 conf.), and counting…
• Tecno-economics, transport protocol performance (=TCP, effect of
handovers, packet reordering, delay spikes, …), multipath/multi-radio
connectivity, multipath-TCP, QoE, etc.
10/10

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