University of Oulu

G. Saha, A. A. Abouzeid, Z. Khan and M. Matinmikko-Blue, "On the Optimal Duration of Spectrum Leases in Exclusive License Markets With Stochastic Demand," in IEEE/ACM Transactions on Networking, vol. 29, no. 3, pp. 1060-1073, June 2021, doi: 10.1109/TNET.2021.3060088

On the optimal duration of spectrum leases in exclusive license markets with stochastic demand

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Author: Saha, Gourav1; Abouzeid, Alhussein A.1; Khan, Zaheer2;
Organizations: 1Department of Electrical, Computer and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
2Centre for Wireless Communications (CWC), University of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 2.6 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2021-09-01


This paper addresses the following question which is of interest in designing efficient exclusive-use spectrum licenses sold through spectrum auctions. Given a system model in which customer demand, revenue, and bids of wireless operators are characterized by stochastic processes and an operator is interested in joining the market only if its expected revenue is above a threshold and the lease duration is below a threshold, what is the optimal lease duration which maximizes the net customer demand served by the wireless operators? Increasing or decreasing lease duration has many competing effects; while shorter lease duration may increase the efficiency of spectrum allocation, longer lease duration may increase market competition by incentivizing more operators to enter the market. We formulate this problem as a two-stage Stackelberg game consisting of the regulator and the wireless operators and design efficient algorithms to find the Stackelberg equilibrium of the entire game. These algorithms can also be used to find the Stackelberg equilibrium under some generalizations of our model. Using these algorithms, we obtain important numerical results and insights that characterize how the optimal lease duration varies with respect to market parameters in order to maximize the spectrum utilization. A few of our numerical results are non-intuitive as they suggest that increasing market competition may not necessarily improve spectrum utilization. To the best of our knowledge, this paper presents the first mathematical approach to optimize the lease duration of spectrum licenses.

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Series: IEEE/ACM transactions on networking
ISSN: 1063-6692
ISSN-E: 1558-2566
ISSN-L: 1063-6692
Volume: 29
Issue: 3
Pages: 1060 - 1073
DOI: 10.1109/TNET.2021.3060088
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This material is based upon work supported by the National Science Foundation under grant numbers CNS-2007454 and CNS-1456887, FiDiPro Fellow award from Business Finland (MOSSAF), Academy of Finland 6Genesis Flagship (grant 318927), and partly funded by Infotech Oulu (2018-2021).
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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