A DTN Perspective on Mobile Relays for Cellular Networks Vasilis Friderikos
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Transcript of A DTN Perspective on Mobile Relays for Cellular Networks Vasilis Friderikos
Mobile network operators are currently witnessing a decoupling between aggregate traffic demand and revenues In addition both OPEX and CAPEX are increased since to enhance capacity small cells with higher densiity need to be deployed Network sustainability requires novel solutionsto be implemented.
A DTN Perspective on Mobile Relays for Cellular Networks
Vasilis FriderikosCentre for Telecommunication Research, King’s College London
E-mail: [email protected]
For the Interested Reader
Objectives and Rationale
P. Kolios, V. Friderikos, K. Papadaki, Ultra low energy store-carry and forward relaying within the cell, IEEE Vehicular Technology Conference, Sept. 2009, pp. 1-5
Panayiotis Kolios, Vasilis Friderikos, Katerina Papadaki, A practical approach to energy efficient communications in mobile wireless networks, Mobile networks and applications (MONET), 2011, Online ISSN 1383-469X
Panayiotis Kolios, Vasilis Friderikos, Katerina Papadaki, Future wireless mobile networks, IEEE Vehicular Technology Magazine, 6 (1). pp. 24-30, 2011
With the shift to mobile Internet services, voice has become only part of a bigger ecosystem with a plethora of services. The penetration of smart-phones and mobile Internet applications has contributed to an exponentialgrowth in demand
A Paradigm Shift from Voice to Data
By store-carry and forward we trade-off message delivery delays for energy efficiency by simply postponing communication for future time instances with better channel gains Applications
Email client synchronizationOn demand video content accessNews feeds, Social networking and the like
Where are the gains coming from?
Utilizing Service Elasticity and User Mobility to Reduce Energy Cost
Future Perspectives Proximity-based Services (ProSe) – which is a new study Item for 3GPP Rel-12Application of store carry and forward relying in different families of elastic cloud based applications:
Storage as a Service (StaaS) Processing as a Servce (PraaS) Software as a Service (SaaS)
Set of Benefits of Performing Store Carry and Forward Transmissions
Key Results
Increased Spatial Capacity
Reduced blockingprobability for real
timetraffic
Switching-off LowUtilization BSs
Energy Savingsat BSs (downlink)
Load Balancing Across Cells
Less co-channelinterference
Don't transmithere!
Transmithere!
1000 times better quality signal
thousandtimes !
Total energyconsumption
RF energy consumption
Reduction on energy consumption
Co-channel interference reduction due to the localization of the transmissions