自從車載隨意網路的概念被提出後，它一直受到研究人員的熱烈關注。其應用包含了行車安全、交通流量控制、娛樂…等。與固定式隨意網路相比，車輛的高速移動造成無線通訊連線斷斷續續。然而，某些類型的資訊不需要依靠連續性的無線通訊連線來傳遞。這些類型的資訊通常是必需一次散佈給眾多的車子，例如行車安全相關資訊、休閒資訊…等。在近幾年中，為了傳遞緊急性資訊給所有車輛，有非常多的相關資訊散佈演算法被提出。其中大部份的演算法都具備相當良好的效能。相反的，休閒資訊的散佈一直被嚴重的忽略。畢竟休閒資訊的重要性相對緊急性資訊而且是非常的低。就算如此，休閒資訊的散佈對於人們在高速公路環境中的長途行車來說依然是相當重要的。因此，我們提出了針對休閒資訊散佈的興趣感知機率式散佈演算法。興趣感知機率式散佈演算法結合了機率式廣播與延遲廣播的技術來散佈休閒資訊。另外，我們也提出了屬於興趣感知機率式散佈演算法的狀態轉換系統。只要車載隨意網路中的每一台車子遵守狀態轉換的規則，休閒資訊即可被正確的傳遞到有興趣的人們手上。經過公認模擬器NS2的實驗證明，興趣感知機率式廣播花費了相當低的成本達成高效率的接收比例。

Vehicular ad-hoc network (VANET) is always attractive since the concept was proposed. Its applications include driving safety, traffic control, entertainment, etc. Compared with static ad-hoc network, high speed mobility makes wireless connection between two vehicles become intermittent. Nevertheless, some kinds of information do not rely on continuous connection for transmission. The characteristic of the information is that numerous vehicles desire to have it, like safety-related data and leisure information. In recent years, there are too many protocols about critical data dissemination, and the protocols already have excellent performance. Leisure information is ignored severely on the contrary because of its low importance. Even so, the dissemination of leisure information is an important issue in VANET when people get a long drive on highway. Therefore, we propose interest-aware probabilistic dissemination (IAPD) of leisure information in VANET, which combines probabilistic broadcast and timer-based broadcast techniques. We also develop a state transition system for leisure information dissemination. The simulation results show that IAPD spend less cost to obtain high reception rate.

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