臺灣博碩士論文加值系統

車用網路在即時訊息的應用方面相當的風行。尤其在近幾年來，車用網路對於緊急訊息和路況的分析越來越多。本文提出一種將道路分割成多個區塊來管理並傳送道路情報的方法。我們將每個道路區塊內的節點分成主動節點和被動節點，主動節點會將區塊內的全部節點資料加以收集，然而向後傳遞。當駕駛人收到資料時，便可獲得前方道路的狀況。駕駛人可以藉此判斷繼續往前行駛或是轉彎。我們同時進行模擬觀察此方法的效能。
我們藉由控制節點密度和區塊大小來分析這些變量對於成功率、delay和overhead的關聯性。模擬結果顯示，我們的研究對於兼顧了路況分析的有效傳輸距離及成功率。

In the last years, VANET has emerged as a promising field of research, where advances in Wireless and Mobile Ad-Hoc Networks can be applied to real-life problems. We propose a method that aggregates and transmits the road information by dividing the road into several segments. In each segment, nodes are divided into different types. Information are collected and transmitted backward to inform drivers. Drivers can obtain the road condition by receiving information. They may choose to travel forward or turn around.
We conduct simulations to evaluate the performance. We observe successful rate, delay and overhead under different node density and segment size. The results showed that our scheme provides effective transmitting range as well as good successful rate.

書名頁 i
論文口試委員審定書授權書 ii
授權書 iii
中文摘要 iv
英文摘要 v
誌謝 vi
目錄 vii
表目錄 viii
圖目錄 ix
第一章、緒論 1
第二章、方法 6
2.1 系統環境 6
2.3 執行過程 9
2.4 延遲時間的分析 13
第三章、模擬 16
3.1設定 16
3.1.1車輛的移動模型 16
3.1.2傳輸設定 17
3.2 模擬結果 19
3.3 總結 31
第四章、結論 33
參考文獻 34

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