Game Theoretic Analysis of Citizens Broadband Radio Service
2022-09-19·
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0 min read
Dr. Jonathan Chamberlain
David Starobinski
Abstract
The Citizens Broadband Radio Service (CBRS) is a spectrum sharing framework on the 3.5 GHz tier with three priority tiers: the incumbents, priority commercial users (PAL), and general commercial users (GAA). Thus, commercial users compete for resources within the second and third priority tiers. The interaction between commercial providers and customers is complicated by the presence of the incumbents, who impact the availability of spectrum but bypass the market entirely. In particular, PAL customers are themselves subject to preemption even with the priority purchase. In this paper, we propose a game-theoretic framework to shed light into the equilibrium outcomes and the impact of the incumbents into these. We determine that there exist several possible equilibrium regions, including one with a unique mixed equilibrium which is stable in the evolutionary stable strategy sense, and others featuring unstable mixed equilibria and stable pure equilibria. We show that for fixed parameters, the maximum possible revenue a provider can obtain is associated with a stable equilibrium and is thus guaranteed. However, changes in incumbent behavior can result in phase changes which have a sizable impact on the maximum potential revenue.
Type
Publication
2022 20th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)
Authors
Dr. Jonathan Chamberlain
(he/him)
Unaffiliated Researcher
As a Graduate Research Fellow with BU NISLAB, I published a number of papers, including a paper in collaboration with the Ohio State ElectroScience Laboratory stablishing the economic feasibility of sharing for wholesale commercial markets yielding priority to mission critical Earth Exploration Satellite Service-passive (EESS-passive) radiometers which received the Runner-Up accolade for Best Paper on the Policy Track at IEEE DySpan 2024. I was also actively involved in multiple service roles, including serving on the executive board of the Boston University Student Association of Graduate Engineers in various roles, membering on an advisory committee providing feedback for university initiatives and proposed policy updates to the Associate Provost for Graduate Affairs, and co-organized the 10th and 11th editions of the BU Center for Information and Systems Engineering Graduate Student Workshops in 2024 and 2025. For these efforts, as well as my work mentoring students both within the NISLAB and in other projects as well as my published research, I was recognized with the BU ECE Department Doctoral Acheivement Award for the 2024-25 academic year. I additionally had the privilege of participating in the 2025 NSF NeTS Early Career Investigators workshop.