Transcript 36x48 Vertical Poster

A DTN Perspective on Mobile Relays for
Cellular Networks
Vasilis Friderikos
Centre for Telecommunication Research, King’s College London
E-mail: [email protected]
Objectives and Rationale
 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 solutions
to be implemented.
Key Results
Reduction on energy
consumption
thousand
times !
Co-channel interference reduction due to the localization of the
transmissions
Total energy
A Paradigm Shift from Voice to Data
consumption
 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
exponential
growth in demand
RF energy
consumption
Set of Benefits of Performing Store
Carry and Forward Transmissions
Utilizing Service Elasticity and User
Mobility to Reduce Energy Cost
 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 synchronization
On demand video content
access
News feeds, Social networking and the like
 Where are the gains coming from?
Transmit
Increased Spatial
Capacity
Switching-off Low
Utilization BSs
Reduced blocking
probability for real
timetraffic
Load Balancing
Across Cells
Energy Savings
at BSs (downlink)
Less co-channel
interference
Future Perspectives
 Proximity-based Services (ProSe) – which is
a new study Item for 3GPP Rel-12
Application 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)
here!
1000 times better
quality signal
Don't transmit
here!
For the Interested Reader
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