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Distributed Channel Coordination in Cognitive Wireless Vehicle-to-Vehicle Communications (Invited Paper)
著者
  Kazuya Tsukamoto, Shinya Matsuoka, Onur Altintas, Masato Tsuru, Yuji Oie
 
雑誌名/会議名
  International conference on Wireless Access in Vehicular Environment (WAVE2008), CD-ROM, Dearbone, Michigan, USA 2008 年 12 月
 
アブストラクト
  Currently, a dedicated frequency band is assigned to each of a number of wireless technologies, artificially causing spectrum shortage for new services. It is expected that cognitive radio technology, which can adaptively detect spatial and temporal changes in use over various frequencies, will facilitate achieving efficient wireless resource sharing. However, in ad hoc cognitive communications, such as vehicle-to-vehicle (V2V) communication, since the existence of a common control channel cannot be assumed due to a lack of infrastructure, distributed channel coordination is invariably needed. As a preliminary step toward cognitive wireless V2V communication, in this paper, we focus on one-hop V2V communication and propose a distributed channel coordination scheme that exploits the different characteristics of various frequencies, in terms of both the data transmission rate and the range. Furthermore, in order to evaluate the effectiveness of the proposed scheme, we develop a channel utilization model in which the utilization of each channel changes temporally and spatially due to both primary (licensed) and secondary (unlicensed, opportunistic) usage. The simulation results demonstrate that the proposed scheme can reliably utilize unused frequency(-ies), even under temporal and spatial changes.
 
キーワード
  Mobile, Wireless, その他
 
記述言語
  English
 
 

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