隨著現今網路技術的快速發展，車載網路的觀念也逐漸被提起、重視。在車載網路中，路側單元的存在尤其重要，當控制中心需要廣播資訊的時候，它可以提供良好的服務。除此之外，我們也依靠著路側單元，盡可能地對道路上的車子或其他裝置收集交通資料，收集到的資料越多，越能讓控制中心掌握道路的狀況，進而提供駕駛人恰當的路徑推薦、或因應道路上突發事件的能力。然而，由於建設成本非常昂貴的緣故，路側單元並無法被密集地佈建在道路上，也因此，在收集封包的能耐上有一些限制。基於這樣的現象，本論文試圖以大眾運輸協助路側單元收集封包，來改善整體的封包收集率，並將該大眾運輸命名為母車。在這樣的假設下，我們也提出了「母車整合系統」與「母車整合協定」。在「母車整合系統」中，車子擁有兩個選擇：依靠母車協助攜帶封包，或是自行攜帶封包，端看何者的延遲時間較短而決定。而母車以規律的路線在道路上行駛，期間會向周邊的車輛收集封包並儲存、攜帶，直到它抵達路側單元後，再全數上傳。從實驗結果中可發現，在路側單元分布較不密集時，此方法與原先收集封包的作法相比，不僅可改善整體封包的抵達率，且藉由母車的協助，確可取代部分路側單元的功能，達到相近或更優良的封包抵達率，從而直接減低建設多餘路側單元所需的成本。

As the rapid progress of network technology, Vehicular Ad hoc NETwork (VANET) has been gradually regarded, and we rely on the Road Side Unit (RSU), which is a base station providing better services with ad hoc data dissemination and Internet access, to collect traffic data as many as possible. However, the cost of constructing a RSU is so high that the RSUs cannot be densely deployed, and lead to a limitation on the packet reception. As a result, we devote to improve the packet reception of the RSUs by the assistance from the public transportation, which is served as an agent in this thesis. An agent aggregation system is proposed, and an agent aggregating protocol is also defined. In this system, the vehicle makes a decision of submitting its generated data, whether by the assistance from the agent or by its own, with consideration of delay time. The agent drives on regular routes, gathering traffic data from other nearby vehicles and carrying these data until they can be submitted as long as the agent meets a RSU. In a numerical analysis, our method reaches an achievement in the delivery rate in the environment of sparse deployment of RSUs. Not only can the delivery rate be improved, but also can the cost of constructing extra RSUs be reduced by replacing with the agents.

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