Spectrum Sharing Rigidities: An Institutional Framework for Spectrum Access Rights
Abstract
Debates over wireless spectrum policy typically focus on alternative spectrum access regimes, including exclusive licensing, unlicensed access, and a variety of hybrid frameworks. These institutional arrangements are often evaluated according to their anticipated assistance in delivering wireless services, with emphasis on spectrum utilization, interference management, or technological innovation. Such comparisons frequently treat regulatory categories as the primary object of analysis rather than the underlying spectrum access rights that those institutions create. Moreover, key characteristics of selected radio spectrum access regimes are largely ignored. Instead of compelling cost-benefit estimates to drive policy choices, analogies and sweeping generalizations about observed markets are extrapolated. These projections often fail to tabulate trade-offs over appropriate margins, consider relevant substitution between competing options, or correctly analyze transaction costs associated with policy choices.
This paper seeks to develop an institutional framework for evaluating spectrum access rights based on four characteristics: exclusivity, flexibility, transferability, and coordination authority. These characteristics determine the extent to which spectrum access rights tend to adapt as technologies, markets, and demands evolve. We introduce the concept of institutional option value, defined as the net social gains produced from future opportunities requiring access rights adaptations. Institutional option value is one key determinant of long-run social welfare whose importance depends upon spectrum scarcity, technical progress, transaction costs, and aspects of economic coordination.
The framework distinguishes between engineering flexibility, which expands the technical possibilities for spectrum sharing, and institutional flexibility, which determines whether spectrum access rights can evolve without requiring regulatory redesign. We argue that constraints embedded in spectrum access rules create institutional rigidities that may impede decentralized adaptation.
Evidence from U.S. spectrum auctions, secondary markets, recent institutional innovations, and international spectrum policy illustrates how different bundles of spectrum access rights are associated with distinct economic values. Rather than advocating a universally preferred spectrum access regime, the framework emphasizes institutional fit and designing bundles of rights depending upon likely coordination requirements. The resulting framework provides a general guide to spectrum policies that facilitates the continued evolution of welfare-improving technologies and markets.
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