DIMSUMNet: New Directions in Wireless Networking Using Coordinated Dynamic Spectrum Access

  • Authors:
  • Milind M. Buddhikot;Paul Kolodzy;Scott Miller;Kevin Ryan;Jason Evans

  • Affiliations:
  • Lucent Bell Labs;Stevens Institute of Technology;Lucent Bell Labs;Stevens Institute of Technology;Stevens Institute of Technology

  • Venue:
  • WOWMOM '05 Proceedings of the Sixth IEEE International Symposium on World of Wireless Mobile and Multimedia Networks
  • Year:
  • 2005

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Abstract

The new paradigm of Dynamic Spectrum Access (DSA) networks aims to provide opportunistic access to large parts of underutilized spectrum. Majority of research in this area has focused on free-for-all, uncoordinated access methods common in ad-hoc military applications [5, 7, 8, 10, 11]. In this paper, we argue that a simpler, pragmatic approach that offers coordinated, spatially aggregated spectrum access via a regional spectrum broker is more attractive in the immediate future. We first introduce two new concepts, namely, Coordinated Access Band (CAB) and Statistically Multiplexed Access (SMA) to spectrum that form the basis of our work. We then describe their implementation in the new DIMSUMnet network architecture consisting of four elements: base stations, clients, a Radio Access Network Manager (RANMAN) that obtains spectrum leases, and a per-domain spectrum broker that controls spectrum access. We also discuss in detail various issues in the design of spectrum brokers and spectrum allocation policies and algorithms.