NoLo: No Long-haul provider

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NoLo No Long-haul provider
Jon Crowcroft CL/Cambridge University Tom
Drummond LCE/Cambridge University
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Motivation

• Location of 802.11 Base Stations in Wireless Only
  MAN
• Use node as router w/ p2p link to next zone
• Mechanism to allocate node as inter-zone route
• Use shadows (not shadow pricing)
• Performance Evaluation

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Base Station Location

• Like BT Consume.Net
• Hot Spot
• Look at prop. Near Hot Spot
• Look at dual home clients

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2 level network

• Let base stations fight out freq alloc
• Alloc a client node to be router (I.e. not ad hoc
  802.11?
• Client has to be multihomed
• Work (in ietf) to do base station selection
  consciously/informed

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Need Router Designation/Discovery

• Build Ad Hoc IP level
• Use multicast a LOT?
• Client multicast to find router
• Router multicast advert
• Designation/election protocoluse 802.1d
  style(spanning tree?

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Leapfrog hopping from pond to pond
Leapfrog Routing Client Node
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Shadows

• London has a nice skyline
• Fractal
• Use it.
• Place hot spots high up as well as low
• collaborating/Cooperating nodes might
  subscribe high and low
• Need to look at thisNode needs to state (or
  measure) likely scope

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Eval

• Use top, middle and bottom of buildings
• Have RF propagation model for buildings
• Have surface model for ISM band
• Have consume.net basestation locations (note they
  and BT use wireline net to connect)

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Conclusions

• NoLo
• Not exactly MANET
• Router Election based on Likelihood of movement!
  (less likely to move, more able to route)
• Nothing to stop one removing base stations later
  
• Assuming MOST cells have basestation (not quite
  mainstream for project!)
• Future work
• Perf Eval