an automatic and on-demand mno selection mechanism
TRANSCRIPT
© 2014 UZH, CSG@IFI
An Automatic and On-demand MNO Selection Mechanism
Christos Tsiaras, Samuel Liniger, Burkhard Stiller Department of Informatics IFI, Communication Systems Group CSG,
University of Zürich UZH [email protected], [email protected], [email protected]
Krakow 06 May 2014 - NOMS 2014
Motivation MNO Selection Mechanism
Evaluation
© 2014 UZH, CSG@IFI
Current Termination Service Situation
The mobile termination service, since the early days of mobile communication, is considered to be a monopoly
Could any of you connect me with Alice?
Mobile network X Alice’s network
I am the only network that can connect anyone with Alice!
q Only the Mobile Network
Operator (MNO) that Alice is connected with can reach her Bob
© 2014 UZH, CSG@IFI
Motivation
Alice’s MNO Bob’s network
Bob Alice
I want to call
Termination rate Service rate
q Total cost of the call = Service rate + Termination rate q Calling Party Pays (CPP) principle → Total cost
© 2014 UZH, CSG@IFI
Research Idea
Auction-based Charging User-centric System (AbaCUS)
q Auction – Auction parameters
– Quality-of-Service (QoS) parameters • Resources availability • Voice quality • Network access priority
– Price
q Automatic and on-demand MNO selection mechanism
Alice’s MNO MNO X
© 2014 UZH, CSG@IFI
MNO Selection Mechanism Requirements
q Download it @ http://www.abacusproject.eu/ q Accessing the Android internal Application
Programming Interface (API) – Obtain the original Android framework
• Compile own framework • Extract it from a device
– Create a customized Android framework • Access the internal API in an Integrated Development
Environment (IDE) – Modify the IDE access rule
• Eclipse prohibits to use the internal API
q Sign the application with the system signature key
© 2014 UZH, CSG@IFI
Evaluation
q MNO switching time R1 q Mechanism’s energy consumption R2 q Mechanism’s data volume demand R3
010101
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Experiment
q Foreign SIM cards in roaming to simulate the SIM cards acceptance – Switching between every MNO pair 6 x 100 times – 5 different time-frames – Urban area inside a building – Moving on a train
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MNO Switching Time -1 (R1)
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MNO Switching Time - 2 (R1)
q MNO switching time independent of the: – MNO – Scenario
• Stable • Moving
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MNO Switching Time Correlations (R1) RSSI Value
Signal strength [dBm]
0 -113 1 -111 2-30 -109 to -53 31 > -51 99 Not known or not
detectable
q Performance independent of: – Signal strength – Time-frame
© 2014 UZH, CSG@IFI
Long MNO Switching Time (R1)
08:00 10:30 12:00 14:00 17:00 02:000
50
100
150
200
250
Time of the day
Num
ber o
f tim
es M
NO
sw
itchi
ng e
xcee
ded
10 s
q Potential affect of high cell occupancy
© 2014 UZH, CSG@IFI
Calling Time With MNO Switching (R1)
q Low time-overhead
© 2014 UZH, CSG@IFI
Energy Evaluation (R2)
Consumption 2G max talk time [h]
2G power [W]
3G max talk time [h]
3G power [W]
Voice Service 18.33 0.3333 8.67 0.705 Stand-by 710.00 0.0086 610.0 0.010
Process Power [W] Talk 3G 0.7050 MNO selection moving 0.6536 MNO selection stable 0.5406 Talk 2G 0.3333
Power consumption overhead on average of a 3 minute call: +(2.6-6.5)% battery consumption per call.
© 2014 UZH, CSG@IFI
Data Evaluation (R3)
Activity Stakeholder Received [B] Sent [B] Register GCM* Caller/Callee 128 457 Service request Caller 358 (1) 796 (4) Change MNO Callee 256 (2) 276 (3) Unregister GCM Caller/Callee 128 437
Caller Callee Auction Authority
1. Service request
2. Change MNO
3. OK
4. Ready to call
*Google Cloud Messaging
© 2014 UZH, CSG@IFI
Conclusions
q An automatic and on-demand MNO selection mechanism is usable – Energy – Time
q Access to the internal Android API is needed to get access to the GSM modem – Such method need to be published in the open API from
multiple mobile terminal equipment vendors
✔
© 2014 UZH, CSG@IFI
Thank you
Q&A
FLAMINGO