隨著具備連網能力之智慧裝置的普及，搭配先進的無線網路傳輸技術，智慧感知網路生活圈：物聯網 (IoT) 逐漸形成。無線網路的應用服務發展越來越多元，使得網路服務除了傳統資料的交換外，強調即時性的影音串流服務例如VoIP與Video串流的需求量也日益劇增，以至於現有的傳輸層協定在無線傳輸下無法完全滿足所有服務資源的需求。因此，如何改善舊有的傳輸層協定，使其更適合使用在無線傳輸環境中已成火紅的議題。
本論文提出了使用新型態的傳輸層協定：串流控制傳輸協定 ( SCTP )，並透過改良SCTP所支援的多串流特性( Multi-streaming ) 與部分可靠特性 ( Partial Reliable)，搭配跨層協調(Cross-layer cooperation)機制結合，解決舊有傳輸層無法準確依據當前網路狀態做及時調整的問題。依據各封包的服務品質需求 (QoS) ，透過動態的傳輸排程調整提高傳送即時影音串流的吞吐量( Throughput)，並在各類型遺失情況下能維持較少的端對端延遲 (End-to-End delay )。
從模擬結果可以明顯看出，本論文所提出的方法相較於其他方法，不論在隨機分散遺失模型(Random loss model)中或是在連續遺失模型( Burst loss model )中，在各項評測項目中都有相當不錯的表現。此外在平均端對端延遲與頻寬浪費量上都能維持較短的延遲時間與較少的頻寬浪費量，足以證明我們所提出的方法非常適合推廣到變動性且變異性高的無線物聯網中使用。

The popularity of smart phones makes people increasingly dependent on wireless networks. Nowadays, through the uprising of a Sensor Network environment, the Internet of Things (IoT) is gradually forming. Network application services has become more diverse, leading to conventional transmission protocols in wireless environment not being able to meet all service resources.

In our paper, we improved the shortcomings of Stream Control Transmission Protocol (SCTP) with Multi-streaming and partial reliability, and combined it with a cross-layer coordination mechanism to solve the aforementioned problems; in addition, we support dynamic QoS packet scheduling for each service resource. Our method can provide good throughput for real-time transmission and maintain less end-to-end delay than any wireless error model.

Apparent from the simulation results, our proposed method has performed well in various loss models. Not to mention, our approach has less delay time and less bandwidth wastage in our simulation results. This is enough to prove that our proposed method is extremely suitable for promotion for its use in the highly flexible and variable wireless Internet of Things (IoT).

學位論文審定書 I
摘要 II
ABSTRACT III
目錄 IV
圖目錄 VI
表目錄 VIII
第一章 導論 1
1.1 研究背景簡介 1
1.2 研究動機 4
1.3 論文架構 6
第二章 技術背景與相關文獻 7
2.1 物聯網介紹 7
2.1.1 物聯網起源 7
2.1.2 物聯網的關鍵技術 9
2.1.3 物聯網相關研究 10
2.2 串流控制傳輸協定(SCTP) 11
2.2.1 SCTP介紹 11
2.2.2 SCTP特性 13
2.2.3 SCTP資料傳輸方式 18
2.2.4 PR-SCTP部分可靠傳輸 23
2.3 跨層協定設計(CROSS-LAYER DESIGN) 26
2.3.1 跨層協定設計簡介 26
2.3.2 相關研究課題 29
第三章 協定機制制定 30
3.1 機制架構 32
3.2 情境假設 34
3.3 IOT對外伺服器輔助訊息處理機制 36
3.3.1 SNR值評估機制 37
3.4 SCTP跨層協調核心機制 39
3.4.1 封包前處理機制 41
3.4.2 冗餘封包偵測與排程機制 48
第四章 模擬實驗與結果分析 54
4.1 NS2簡介 54
4.2 NS2模組修改 54
4.3 模擬環境設定與各類參數設定 56
4.4 模擬結果與分析 59
4.4.1 評測項目 59
4.4.2 數據分析 60
第五章 結論 74
參考文獻 75

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