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Spectrum markets: Challenges Ahead
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  1. Spectrum markets: Challenges Ahead Martin Weiss School of Information Sciences University of Pittsburgh mbw@pitt.edu

  2. General viewpoint • Despite liberalization (e.g., Australia), why haven’t spectrum markets become visible? • Transaction costs matter • Liquidity • Enforcement • Secondary user/entrant viewpoint is critical • What are the application requirements? • QoS • Spatial configuration • What are the alternatives? • Focus has been on “naked spectrum”

  3. Starting context ©Mark Hurst. Used with permission

  4. Entrant’s context • Choice parameters • Exclusive or shared access? • Permanent license via primary market (or administrative assignment)? • Dimensions of choice

  5. What are spectrum holes good for?

  6. What types of market mechanisms are appropriate for trading spectrum? • Spectrum access is a complex good/service • What are valued attributes of a trading mechanism? • Anonymization? • Low transaction costs? • Speed? • Others? • Alternatives • Bi-lateral bargaining • Brokerages • Exchanges

  7. What technical restrictions should be placed on spectrum rights/users/service providers? • Participants need mechanisms to support • Transaction audits • Execution enforcement • Some standards might prove valuable • Spectrum sharing protocols • Negotiation protocols/channels

  8. Will spot markets for spectrum exist in 10 years? • Depends on • Liquidity • Transaction costs • Enforcement • Trust • Transaction support • Exchange/brokers • Clearing mechanisms • Standard trading unit • Price reporting • Best chances in the near term • Limited-scope opportunities

  9. What role might spectrum sensing/cognitive radio play in spectrum markets? • Software radios are essential • Cost reduction is critical going forward • Wide tuning range is desirable, which is challenging for antenna and RF front end design • Sensing is hard and costly • You have to know what you’re looking for to find it • Cooperative sensing has density and correlation problems • Secondary markets • Licenses are traded • Sensing is focused on enforcement • Secondary use • Sensing may be useful if multiple secondary users share temporary licenses • Enforcement

  10. Questions? http://www.webwhispers.org/news/apr2005.htm