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A Non-Time-Limited Channel Sounding Protocol for Key Generation

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Abstract

The traditional channel sounding protocol requires that the whole sounding process must be completed within a coherent time. When the communication delay is close to or greater than the coherent time, the protocol will not work properly. In order to solve this problem, a novel Non-Time-Limited channel sounding protocol is proposed. The proposed channel sounding protocol does not need to guarantee the channel reciprocity, has no limit on the communication delay and has strong multi-relay scalability. At the same time, a relay-assisted security extension mechanism is proposed to prevent the collaborative eavesdropping of the neighboring attackers. Simulation experiments show that the Non-Time-Limited channel sounding protocol can get rid of the influence of channel change speed on key generation, effectively improve key consistency in high-speed mobile scenarios, and still maintain good key agreement rate performance in underwater acoustic communication.

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Acknowledgements

This work were supported in part by Joint Fund of Ministry of Education of China under Grant 6141A02022338 and Natural Science Basic Research Program of Shaanxi (Program No.2021JM-134).

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Authors and Affiliations

  1. State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an, 710071, China

    Liu Jingmei, Shen Zhiwei, Ren Zhuangzhuang, Liu Jingwei & Gong Fengkui

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  1. Liu Jingmei
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  2. Shen Zhiwei
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  3. Ren Zhuangzhuang
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  4. Liu Jingwei
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  5. Gong Fengkui
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Correspondence to Shen Zhiwei.

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Jingmei, L., Zhiwei, S., Zhuangzhuang, R. et al. A Non-Time-Limited Channel Sounding Protocol for Key Generation. Wireless Pers Commun 120, 787–807 (2021). https://doi.org/10.1007/s11277-021-08490-4

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