| 研究課題/領域番号 |
20K14742
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| 研究機関 | 国立情報学研究所 |
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研究代表者 |
劉 佳 国立情報学研究所, サイバーセキュリティ研究開発センター, 特任助教 (10813420)
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| 研究期間 (年度) |
2020-04-01 – 2023-03-31
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| キーワード | physical layer security / information security / secure routing / Internet of Things / incentive mechanism |
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| 研究実績の概要 |
The objective of this project is to develop a lightweight yet powerful solution for the device-to-device communication-based Internet of Things systems, so as to support the ubiquitous, high-speed and low-latency data delivery in the 5G and 5G-beyond era, as well as accelerate the realization of the future world-leading society 5.0 proposed by the Japan Government. To achieve this goal, we investigate the physical layer security (PLS) technology and propose a PLS-based routing design framework to enable the end-to-end paths to be established in polynomial time for secure data delivery while ensuring quality-of-service.
This fiscal year, we studied the PLS-based secrecy transmission mechanisms and evaluated their performance. Particularly, considering the two-way untrusted relay communication scenario, we designed the optimal beamforming and precoding schemes to maximize the system secrecy sum-rate and secrecy energy efficiency, respectively. Considering the multi-hop communication scenario, we evaluated the end-to-end secrecy performance under a general configuration and utilized game-theoretic approaches to design preliminary incentive mechanisms for security enhancement. Based on these, we designed secure routing algorithms which satisfy desirable properties.
The results have been published in 4 top journal articles and 3 international conference proceedings, including 1 paper in IEEE Transaction on Wireless Communications, 2 papers in IEEE Transactions on Information Forensics and Security, and 1 paper in IEEE Internet of Things Journal.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
1: 当初の計画以上に進展している
理由
The original plan in the first year is to establish the performance evaluation framework and design the incentive mechanism. In practical implementation, we have developed the performance evaluation framework successfully by combining the techniques of stochastic geometry, Laplace transform, probability theory, information theory, and so on. The proposed framework is able to evaluate the transmission secrecy and communication reliability performance of IoT systems under the general configuration. We have also developed a two-stage Stackelberg game model to characterize the interactions among entities in the IoT, based on which we have designed the incentive mechanism to stimulate cooperative jamming for security enhancement. Moreover, we have also investigated the performance tradeoff issues based on optimization theory and proposed two preliminary secure routing algorithms.
This research is expected to produce at least 4 conference papers and 3 journal papers during 3 years. Fortunately, only in the first year, we have published 3 conference papers and 4 journal papers, and the journal papers are all published in top journals: 1 paper in IEEE Transaction on Wireless Communications, 2 papers in IEEE Transactions on Information Forensics and Security, 1 paper in IEEE Internet of Things Journal. The reason for progressing more smoothly than initially planned is due to our solid research background accumulated from previous studies on physical layer security and wireless communications.
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| 今後の研究の推進方策 |
I will continue the research as follows.
1. The achieved results are based on some relatively ideal assumptions, for example, the channel state information is available. Although the channel state information can be estimated by some techniques, it is still unavailable under some practical IoT applications. Therefore, I will further investigate the related issues caused by more practical limitations, for example, the performance evaluation problem when the channel state information is unavailable or partially available.
2. We have developed a two-stage Stackelberg game model to design the incentive mechanism. There also exist other game-theoretic models, such as the auction model, the pricing model, that can be used to characterize the interactions among entities in the IoT systems. I will further explore the applicability of these models in the design of incentive mechanisms for transmission security enhancement.
3. We have studied the security-QoS tradeoff issues to some extent. We dealt with these issues based on some mathematical approximations to derive closed-form results. We will extend the research to more practical scenarios, where we plan to develop iterative algorithms to achieve the optimal security-QoS tradeoffs.
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| 次年度使用額が生じた理由 |
Reason: My original plan was to use the budget to attend several prestigious international symposiums, go for academic exchange in some prestigious laboratories (such as Prof. Taleb's lab in Aalto University, Finland), and invite some professors to our institute to give lectures and guidance. Unfortunately, due to the COVID-19 pandemic, all the planned symposiums were canceled, as well as all the planned visiting and invitations were suspended. I have to use the remaining budget in the next fiscal year.
Usage Plan: I expect that the global COVID-19 pandemic will be controlled, and then I plan to attend international conferences and visit some laboratories. I also plan to attend more domestic symposiums and visit some domestic researchers. In addition, I plan to buy some electronic books to back up our research, and some computing devices for simulations and numerical calculations.
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