Journal
IEEE TRANSACTIONS ON DEPENDABLE AND SECURE COMPUTING
Volume 18, Issue 1, Pages 438-447Publisher
IEEE COMPUTER SOC
DOI: 10.1109/TDSC.2019.2892447
Keywords
Uncertainty; Differential privacy; Computer architecture; Aggregates; Privacy; Portfolios; Databases; Spectrum trading; differential privacy; data-driven modeling; risk-averse stochastic optimization
Categories
Funding
- U.S. National Science Foundation [US CNS-1343361, CNS1350230, CNS-1646607, CNS-1702850, CNS1801925]
- Beijing Natural Science Foundation [L172049]
- National Science and Technology Major Project [2017ZX03001014]
- National Natural Science Foundation of China (NSFC) [61525101, 61631003]
- 111 Project of China [B16006]
- US National Science Foundation [CNS1566634, ECCS1711991]
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This paper proposes a data-driven spectrum trading scheme that aims to maximize primary users' revenue while preserving secondary users' demand differential privacy. Through a novel network architecture and demand estimation strategy, it effectively addresses the challenges in spectrum trading.
Spectrum trading benefits both secondary users (SUs) and primary users (PUs), while it poses great challenges to maximize PUs' revenue, since SUs' demands are uncertain and individual SU's traffic portfolio contains private information. In this paper, we propose a data-driven spectrum trading scheme which maximizes PUs' revenue and preserves SUs' demand differential privacy. Briefly, we introduce a novel network architecture consisting of the primary service provider (PSP), the secondary service provider (SSP) and the secondary traffic estimator and database (STED). Under the proposed architecture, PSP aggregates available spectrum from PUs, and sells the spectrum to SSP at fixed wholesale price, directly to SUs at spot price, or both. The PSP has to accurately estimate SUs' demands. To estimate SUs' demand, the STED exploits data-driven approach to choose sampled SUs to construct the reference distribution of SUs' demands, and utilizes reference distribution to estimate the demand distribution of all SUs. Moreover, the STED adds noises to preserve the demand differential privacy of sampled SUs before it answers the demand estimation queries from the PSP. With the estimated SUs' demand, we formulate the revenue maximization problem into a risk-averse optimization, develop feasible solutions, and verify its effectiveness through both theoretical proof and simulations.
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