Preliminary Report

1
Preliminary Report

• Ritabrata Roy
• WINLAB

2
Outline

• Open Spectrum Access
• Spectrum Project
• Coexistence through Pricing
• Cooperation by Counters

3
Open Spectrum Access

• Noam classifies the four ages of spectrum
  allocation as
• occupancy stage
• administrative paradigm
• spectrum auctions
• open access

Source E. M. Noam, Spectrum Actions
Yesterdays Heresy, Todays Orthodoxy, Tomorrows
Anachronism. Taking the Next Step to Open
Spectrum Access. Journal of Law and Economics,
56(2)765-790, 1998.
4
Spectrum Project

• Aims at developing cooperation in unlicensed band
  wireless networks through protocols for
  collaboration, mechanisms for fair and efficient
  spectrum sharing and interference avoidance
  techniques.

Source R. Yates, et.al. Collaborative Research
Achieving Innovative and Reliable Services in
Unlicensed Spectrum, NSF 01-149 ITR (Medium)
Group Proposal, November 13, 2001.
5
Coexistence through Pricing

• Pricing as a policeman to discourage excessive
  interference
• Pricing as a mediator to mediate between user
  and network interests
• Pricing as an enabler to induce cooperation via
  reimbursements

Source O. Ileri, S.-C. Mau, N. Mandayam,
Pricing for Enabling Self-Configuring Networks,
Industrial Advisory Board Research Talk, WINLAB,
October 10, 2002.
6
Cooperation by Counters

• Stimulates cooperation among nodes through a
  counter module that allows packet transmission
  only if the nodes also participate in packet
  forwarding for other nodes.

Source L. Buttyán and J.-P. Hubaux, Stimulating
Cooperation in Self-Organizing Mobile Ad Hoc
Networks, Accepted in ACM/Kluwer Mobile Networks
and Applications (MONET), October 2003, Vol.8 No.
5.