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WiFi Economic Topics

WiFi Economic Topics. Jon Crowcroft jon.crowcroft@cl.cam.ac.uk. Mobileman Kickoff Meeting Pisa, 5/11/02. WiFi and p2p Spectrum Economics. Some possible 2ndary collaborators. In CMI, we have Richard Steinberg, JIMS, Cambridge – RF Auctions

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WiFi Economic Topics

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  1. WiFi Economic Topics Jon Crowcroft jon.crowcroft@cl.cam.ac.uk

  2. Mobileman Kickoff MeetingPisa, 5/11/02 • WiFi and p2p • Spectrum Economics

  3. Some possible 2ndary collaborators • In CMI, we have • Richard Steinberg, JIMS, Cambridge – RF Auctions • David Newbury, Applied Economics, Cambridge-component markets, externalities etc • Frank Kelly, Stats Lab, Cambridge - congestion charging • Tolga Uzuner, PhD student, complexity of charging • DDC/Karen Sollins et al at MIT LCS • RCA (Robert |Leese at Oxford), Ofcomm – other regulators? – e.g. The EU

  4. Market Models • Re-run M3I (cluster with M3I followup maybe, see MMAPPS perhaps) • Look at welfare/greed game models • Look at regulation • Look at resale, spot and futures • Look at hybrid models • Auditability • Costs of Billing systems • Expectations, and settlements (esp. when WiFi uses wired core!)

  5. Online Auctions • Smart Market (Varian et al) & Vickrey Auction.. • Problem of Value of boundary nodes • Double Trouble of boundary to fixed network • Triple Trouble of boundary to 2 or 3 wireless (WiFi, GPRS, Fixed)

  6. Congestion $ • Loss based – hopeless! • ECN based – assumes bottleneck • Reality is congestion is in region • Need to raise price of use within region • How to distinguish local and transit users? • Needs network centric monitoring and control • Needs edge system too, since in MANET, network control point is the end system!

  7. Timescales for Congestion $ • Choices: • Packet Based • TCP connection based • Session Based • Subscription Based – c.f Virtual Communities… • Spatial Cost model? • Proportional Fairness model applied to MANET? • Linear with distance, or relate to Tx & Rx Battery Cost and Interference model (Gupta et al!)

  8. Policing Problems • Prevention v Detection • Refund models? • Integration with existing bill/police systems • Integrate AAA security with MAC/Police? • Tamper-proof modules? (c.f. M3I edge meter tamper-proof code!) • Risk Management (c.f. PhDs in Cambridge TRUST and TAPAS IST projects|) – auditor rules on acceptable risks!

  9. Virtual Communities (WiFi gridlets) • Need to have a system for discovery/creation of virtual communities (all taxi drivers, all trainspotters etc) • Join/leave/invite/evict model • Need to decide how to distribute the database of communities and their wireless network requirements – CAN, central, full replication, or what? • Mixture

  10. Spectrum Trade Model • Auctions • English, Dutch, Vickrey etc • Game theoretic framework applies clearly • Component systems • Fixed+wireless • Neighbour ownership • Congestion price model – dynamics etc

  11. Field Theoretic Model • ECN++ every packet carries force field info • Can be repulsion as a function of distance • Measurement of flux into/out of region:- • Can model this to match underlying network • Dynamics and static capability as well as economics • Would be nice to build this as experiment

  12. Cambridge Mobileman P2P Research Topics • Market Models • Virtual Communities (WiFiGrids?) • Allocation Auctions • Field Theory metaphor to unify?

  13. Non Topics for Cambridge • We don’t do • Wireless MAC • Fixing 802.11 multi-hop! • RF propagation or aerial design

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