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Design and Experimental Evaluation of a Database-Assisted V2V Communications System Over TV White Space

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Abstract

Automakers are increasingly employing wireless communications technologies into vehicles, which are expected to be one of the primary tools to improve traffic flow and traffic safety. Anticipating a significant increase in the accompanying spectrum and capacity requirements, in this paper, we speculate about using dynamic spectrum access in general, and TV white space in particular for vehicular communications. To this end, we describe the concept, design, general architecture and operation principles of a vehicle-to-vehicle communications system over TV white space. This system makes dual use of a geolocation database and spectrum sensing to understand spectrum vacancies. In this architecture, whenever a database query result is available, that information is prioritized over sensing results and when the database access is disrupted, vehicles rely on the spectrum sensing results. After describing the general concepts, we numerically analyze and evaluate the benefits of using proxy vehicles for geolocation database access. Finally, we present the middleware-centric implementation and field test results of a multi-hop vehicle-to-vehicle communications system over the licensed TV-band. We present results regarding multi-hop throughput, delay, jitter, channel switching and database access latencies. This study complements our previous work which described spectrum sensing based vehicle-to-vehicle communications design and testing.

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Acknowledgments

Part of this work was supported by the “FY2012 Revised Budget for Research and Development into Expanding Radio Wave Resources” of the Japanese Ministry of Internal Affairs and Communications.

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Authors and Affiliations

  1. TOYOTA InfoTechnology Center, 6-6-20 Akasaka, Minato-ku, Tokyo, Japan, 107-0052

    Onur Altintas, Toshihiko Watanabe, Haris Kremo & Hideaki Tanaka

  2. Department of Computer Science and Electronics, Kyushu Institute of Technology, Iizuka, Fukuoka, Japan, 820-8502

    Hitoshi Nakao, Kazuya Tsukamoto & Masato Tsuru

Authors
  1. Onur Altintas
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  2. Toshihiko Watanabe
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  3. Haris Kremo
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  4. Hideaki Tanaka
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  5. Hitoshi Nakao
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  6. Kazuya Tsukamoto
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  7. Masato Tsuru
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Correspondence to Onur Altintas.

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Altintas, O., Watanabe, T., Kremo, H. et al. Design and Experimental Evaluation of a Database-Assisted V2V Communications System Over TV White Space. J Sign Process Syst 83, 45–55 (2016). https://doi.org/10.1007/s11265-015-1035-z

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  • DOI: https://doi.org/10.1007/s11265-015-1035-z

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