Towards

1
Towards liquid bandwidth

• Prof. dr. Erik Fledderus
• TNO Managing director Information Society
• TU/e Professor Cognitive Wireless Networks

2
Clearly

• there is a need for massively wireless data
  access networks
• NL-mobile data usage in Q4 2012 6.75 Pbyte (in
  Q4 2011 4.3 Pbyte)
• Interesting regions now theconference centres
  (e.g. RAI)are much more interesting compared to
  airplanes (fibre optics ultra low power
  wireless USB to your chair?), trains (idem).
• So what drives wireless?

3
What drives wireless?
4
More speed
What drives wireless?
5
More spectral efficiency (bits / s / Hz / m3)
What drives wireless?
6
What drives wireless?
Battling interference
7
What drives wireless?
Diversity inuse
8

• General drivers
• More speed (1G, 2G, 3G, 4G, )
• More spectral efficiency
• Growth data to be transported gtgt available
  spectrum
• Densification, architectural changes
• Battling interference
• higher frequencies, multi-hop
• Diversity in use
• More efficient ways of sharing spectrum
• Spectrum harvesting, cognitive radio, spectrum
  etiquette

What drives wireless?
9
With this in mind what makes massively
localised work?

• RULE 1
• A depends on context, situation, density of
  nodes should be adapted!
• RULE 2
• Find shortest path to gateway on fixed network

Find the path of minimal resistance like
liquid LIQUID BANDWIDTH
10
What drives interference and adaptability?

• A combination of power control, the right
  frequency, multi-hop, space division, localised
  intelligence
• mm-waves high propagation loss, so nature works
  for you
• multi-hop minimizing interfered region
• Slightly more advanced listening is more
  expensive compared to talking, so there will be a
  lower limit.
• space division from tri-sector to (optical)
  pencil beam )
• intelligence per mm3 is scaling faster than
  communication speed

) Research by e.g. prof A.M.J. Koonen, TU
Eindhoven
11
Dont forget its all about timing

• If trend in wireless is to provide more bps/m3
  andnetworks get more dense
• Wired infra becomes enabler and root of
  success-ful roll-out of next-generation wireless
  infra

Ray Kurzweil
From wall-sockets to ambient connectivity
Source ZTE, 2012
12
Conclusion

• Massively localized access networks are driven by
  cognitive nodes in an ad-hoc network looking
  for a minimal resistance way to connect to the
  wired backbone
• Fibre / optical backbone as the ICT-nervous
  system
• Key enablers are
• mm-wave technology, cognitive routing techniques
  like OpenFlow, advanced space division (e.g.
  pencil beam), and the generic increase of
  intelligence per mm3
• First deployment is expected in large and densely
  populated conference centres