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研究生:吳貫瑋
研究生(外文):WU, GUAN-WEI
論文名稱:軟體定義異質車載網路之有效資料傳遞機制
論文名稱(外文):An Efficient Data Delivery in Software Defined Heterogeneous Vehicular Networks
指導教授:黃秀芬黃秀芬引用關係
指導教授(外文):HWANG, SHIOW-FEN
口試委員:黃秀芬竇其仁陳烈武
口試委員(外文):HWANG, SHIOW-FENDOW, CHYI-RENCHEN, LIEN-WU
口試日期:2017-07-07
學位類別:碩士
校院名稱:逢甲大學
系所名稱:資訊工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2017
畢業學年度:105
語文別:中文
論文頁數:34
中文關鍵詞:軟體定義網路車載網路異質網路資料傳遞
外文關鍵詞:Software Defined NetworksVehicular NetworksHeterogeneous NetworksData Delivery.
相關次數:
  • 被引用被引用:0
  • 點閱點閱:257
  • 評分評分:
  • 下載下載:10
  • 收藏至我的研究室書目清單書目收藏:0
軟體定義網路(Software-Defined Networking)是一種新的網路架構,其分離傳統網路設備的控制層(Control Plane)與資料層(Data Plane),因此,可藉由SDN控制器有效管理整個網路,同時也能降低網路的維護成本。資料傳遞是車載網路中最基本的應用,不過由於網路頻寬的限制及網路拓樸的高變動性,使得網路鏈結容易斷裂,造成無法有效的傳遞。而現今異質通訊介面的普遍存在及使用者對於服務品質的需求不同,也使得異質車載網路受到重視。目前已有學者在異質車載網路環境下提出資料傳遞機制,但其多以通訊成本為考量,或以單一傳輸路徑為主。因此,我們利用軟體定義網路的概念在異質的車載網路環境下,提出以傳送時間為考量的多路徑資料傳遞機制,使其有較高的成功傳輸率。首先,依照平均車速找出所需中繼節點的數量,再透過改良之Dijkstra’s algorithm找出多條最短路徑,並依據不同的應用,調整路徑權重值,以做有效之資料傳遞。模擬結果顯示,我們的方法在成功傳輸率和時間延遲均優於GPSR、OLSR與SDVN。

Software Defined Networks (SDN) is a new network architecture that separates the Control Plane and Data Plane from traditional network devices. Therefore, the entire network can be managed efficiently by the SDN controller, and also can reduce the maintenance costs of the network. Data delivery is an essential and important issue in Vehicular ad-hoc networks (VANETs). Due to the high speed mobility of vehicles and the limitation of communication range, the network topology changes rapidly, and data transmission is not stable. However, today’s VANETs integrate DSRC, Wi-Fi and 4G, such heterogeneous VANETs (HetVNETs) can improve the above problem, and meet various Qos requirements. There are many researches concerning about data transmission in HetVNETs, but most of them only take into account the communication cost or just employ a single path for data transmission. In addition, they will not be able to meet the demands for users when the packet is urgent. Therefore, we propose an efficient data delivery scheme that take into account the delay time and use multi-path routing protocol to provide a higher delivery ratio in HetVNETs with SDN. First, find the number of relay nodes according to the average speed of vehicles. Then, modify Dijkstra's algorithm to find all shortest paths. Finally, define the weights of these shortest paths according to different demands to obtain an efficient data delivery. Simulation results show that the proposed scheme outperforms GPSR, OLSR and SDVN in terms of both packet delivery ratio and delay time.
目錄
誌謝 i
摘要 ii
Abstract iii
目錄 iv
圖目錄 v
表目錄 vi
第一章 緒論 1
1.1 研究背景 1
1.2 研究動機 3
1.3 論文架構 4
第二章 相關研究 5
2.1 單一路徑資料傳遞機制 5
2.2 多路徑資料傳遞機制 8
第三章 資料傳遞機制 11
3.1異質軟體定義網路 11
3.2 叢集化管理 12
3.3 中繼點設置 13
3.4 找出多條最短路徑 14
第四章 模擬結果與分析 18
4.1 模擬環境參數設定 18
4.2 模擬結果與分析 18
第五章 結論與未來研究方向 31
參考文獻 32
參考文獻
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