Privacy-Aware Spectrum Pricing and Power Control Optimization for LEO Satellite Internet-of-Things

• URL: http://arxiv.org/abs/2407.00814v1
• Date: Mon, 1 Apr 2024 09:15:48 GMT
• Title: Privacy-Aware Spectrum Pricing and Power Control Optimization for LEO Satellite Internet-of-Things
• Authors: Bowen Shen, Kwok-Yan Lam, Feng Li,
• Abstract summary: We propose a hybrid spectrum pricing and power control framework for LEO IoT. We first design a local deep reinforcement learning algorithm for LEO satellite systems to learn a revenue-maximizing pricing and power control scheme. We also propose a reputation-based blockchain which is used in the global model aggregation phase of FL.
• Score: 14.706902417174039
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Low earth orbit (LEO) satellite systems play an important role in next generation communication networks due to their ability to provide extensive global coverage with guaranteed communications in remote areas and isolated areas where base stations cannot be cost-efficiently deployed. With the pervasive adoption of LEO satellite systems, especially in the LEO Internet-of-Things (IoT) scenarios, their spectrum resource management requirements have become more complex as a result of massive service requests and high bandwidth demand from terrestrial terminals. For instance, when leasing the spectrum to terrestrial users and controlling the uplink transmit power, satellites collect user data for machine learning purposes, which usually are sensitive information such as location, budget and quality of service (QoS) requirement. To facilitate model training in LEO IoT while preserving the privacy of data, blockchain-driven federated learning (FL) is widely used by leveraging on a fully decentralized architecture. In this paper, we propose a hybrid spectrum pricing and power control framework for LEO IoT by combining blockchain technology and FL. We first design a local deep reinforcement learning algorithm for LEO satellite systems to learn a revenue-maximizing pricing and power control scheme. Then the agents collaborate to form a FL system. We also propose a reputation-based blockchain which is used in the global model aggregation phase of FL. Based on the reputation mechanism, a node is selected for each global training round to perform model aggregation and block generation, which can further enhance the decentralization of the network and guarantee the trust. Simulation tests are conducted to evaluate the performances of the proposed scheme. Our results show the efficiency of finding the maximum revenue scheme for LEO satellite systems while preserving the privacy of each agent.

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