博碩士論文 etd-0816111-152900 詳細資訊


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姓名 商耀元(Yao-Yung Shang) 電子郵件信箱 syukevin@hotmail.com
畢業系所 電機工程學系研究所(Electrical Engineering)
畢業學位 碩士(Master) 畢業時期 100學年第1學期
論文名稱(中) 在叢集式無線感測網路中具有電力平衡的管線傳輸機制
論文名稱(英) Pipelined Forwarding with Energy Balance in Cluster-based Wireless Sensor Networks
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    摘要(中) 無線感測網路(Wireless Sensor Network,WSN)是由許多無線感測器(sensor)組成,感測器蒐集完資料後會透過無線網路將資料傳輸至蒐集點,由於在無線感測網路中,因為需要多重節點路由(Multi-hop Routing)所以會增加封包延遲時間,而且越靠近蒐集點的感測器也會因為幫忙轉傳其他感測器的資料而消耗大量的電力。為了解決此問題,本論文提出了管線傳輸(pipeline forwarding)的叢集式網路機制,將整體無線感測網路區分成數個叢集,藉此縮短將資料傳輸至蒐集點的時間,而每個叢集中的感測器使用pipeline方式傳輸資料,可達到在最短時間內將資料傳輸至蒐集點,由於蒐集點個數增加,需要由mobile sink蒐集資料。此外為了解決越靠近蒐集點的感測器因為幫忙轉傳資料會消耗大量電力,本論文提出定期的路徑交換機制,讓每個感測器可藉由改變資料傳輸的方向以避免持續消耗大量的電力而導致資料傳輸的中斷。
      我們推導數學公式以分析驗證所提出的機制,在分析中證明了我們所提出的管線傳輸叢集式網路確實可以藉由縮短感測器與蒐集點的距離降低封包延遲,並藉由增加pipeline的長度以及mobile sink的數量可以增加整體網路的throughput,在分析每單位電力所產生的throughput中,我們發現所提出的pipeline機制比起傳統的非pipeline機制可以更有效的使用電力以達到最大的throughput。
    摘要(英) Wireless Sensor Network (WSN) is composed of sink and sensors. Sensors transmit data to sink through wireless network after collecting data. Because multi-hop routing and forwarding may be required on WSN, sensors closer to sink will consume more energy than other nodes due to hop-by-hop forwarding. In this Thesis, we propose pipelined forwarding for cluster-based WSN to solve these problems. First, we divide a WSN into several clusters such that the distance between sensors and sink is reduced and packet transmission delay can be decreased. However, since reducing the distance can increase the number of clusters significantly, multiple mobile sinks are embedded in the system to increase overall throughput. Second, we change the direction of pipelined forwarding to avoid from running out of energy of some sensors.
    We derive mathematical equations to analyze and validate the proposed scheme. From the analytical results, we prove that the proposed scheme can decrease packet transmission delay. The results also show that system throughput can be improved by increasing the length of pipeline and the number of mobile sinks. Finally, we demonstrate that the proposed scheme can increase energy throughput more efficiently than conventional non-pipelined forwarding scheme.
    關鍵字(中)
  • 無線感測網路
  • 叢集式
  • 移動式蒐集
  • 電力平衡
  • 管線傳輸
  • 關鍵字(英)
  • Pipelined forwarding
  • WSN
  • Energy balance
  • Mobile sink
  • Cluster-based
  • 論文目次 第一章 導論 1
    1.1 研究動機 1
    1.2 研究方法 1
    1.3章節介紹 3
    第二章 無線感測網路 4
    2.1 基本架構 4
    2.1.1 硬體裝置及通訊協定 5
    2.2各種資料蒐集方式 7
    2.2.1 Hop-by-Hop的資料蒐集 7
    2.2.2 隨機路徑式(Random Waypoint) 8
    2.2.3固定軌跡式(Predefined Path) 8
    2.3 相關研究 11
    2.3.1 固定式蒐集點 12
    2.3.2 移動式蒐集點 13
    2.4 本論文所提機制 14
    第三章 無線感測網路的資料蒐集與傳輸 16
    3.1 叢集式無線感測網路 16
    3.2 固定式資料蒐集及路徑選擇 17
    3.2.1 FDCR中的叢集式網路 18
    3.2.2 主線及資料傳輸 20
    3.3 移動式資料蒐集及路徑選擇 22
    3.3.1 MDCR中的叢集式網路 23
    3.3.2 移動式Sink路徑選擇 24
    3.4 FDCR/MDCR的Pipeline傳輸 27
    3.4.1 Cluster head的三維定義 27
    3.4.2 Pipeline傳輸 28
    3.4.3 Pipeline路徑交換 30
    第四章 數學分析與結果 32
    4.1 資料蒐集 32
    4.2 數學公式推導 33
    4.2.1 固定式蒐集的效能分析 35
    4.2.2 移動式蒐集的效能分析 42
    4.2.3 電力消耗的分析 45
    4.3 分析與討論 51
    4.3.1 單一蒐集點 51
    4.3.2 多個蒐集點 55
    4.3.3 電力消耗 58
    4.3.4 不完整Cluster的百分比 61
    第五章 結論與未來工作 63
    5.1 結論 63
    5.2未來工作 64
    參考文獻(References) 66
    索引(Index) 69
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    口試委員
  • 李宗南 - 召集委員
  • 賴威光 - 委員
  • 黃宗傳 - 委員
  • 許蒼嶺 - 指導教授
  • 口試日期 2011-08-09 繳交日期 2011-08-16

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