臺灣博碩士論文加值系統

本篇論文中，針對HomePlug AV規格下的電力線通訊設備進行網路路徑特徵的量測研究，經由對其規格標準與廠商實作上的特色進行分析，提出於電力線通訊上量測網路特徵所需處理的議題，並由處理此議題發展出新的量測工具HTMProbe，能夠量測出在此種多重速率網路系統中，切換至最高傳輸模式下所需的最小量測速率，並同時量測出此網路的Link Capacity和Available Bandwidth，接著在不受干擾的測試環境下進行實驗，驗證電力線通訊此種多重速率網路系統量測上的議題，再透過利用現存的網路特徵評估工具進行實測，研究這些工具在此種網路量測上的侷限，並利用實驗驗證我們工具的可用性。
電力線通訊利用電力線路為傳輸媒介，其線路上存在多種未知的電器干擾，而此種干擾對於電力線通訊的影響程度將左右其效能，因此本篇論文利用實驗環境對多種電器進行實測，並從干擾的程度對於下載速率的影響進行分類，用以探討不同種類干擾與不同位置設置對於電力線通訊效能的影響，並實測電磁干擾濾波器對於電力線通訊效能的改善程度，發現其對於穩定電力線通訊有顯著的效果。

In this thesis, we investigate the network path characteristic of power line communication (PLC) under HomePlug AV standard by experiments. First, we analyze the feature of PLC according to the specification of the HomePlug and the real products which are implemented by different factories. Based on the feature, the measurement issue in the kind of multi-rate network system is need to be solved. For the issue, HTMProbe is proposed to probe the minimum sending rate in highest transmission mode and at the same time probe the link capacity and available bandwidth. Then in the experiment environment, we use the existing well-known measurement tools to probe the link capacity of PLC, and find their limitations. We test HTMProbe in our testbed and find that is provides good estimates of the link capacity, available bandwidth and the minimum sending rate to overcome the limitations. Using power line as the media to transmit, it will be interfered by several electronic devices and obstruct the performance of network. We test several electronic devices, and classify them by the level of interference according to the download rate, and investigate the effect of different level of interference and the relative position between electronic devices and PLC devices. Final, we test the electromagnetic interference filter in the experiment environment to improve the PLC performance.

第一章 緒論 8
第二章 電力線通訊技術簡介與相關研究 11
第一節、 電力線通訊技術簡介 11
第二節、 網路量測技術相關研究 13
第三節、 電力線通訊量測相關研究 15
第三章 電力線通訊量測議題探討與量測方法提出 17
第一節、 電力線通訊量測議題探討 17
第二節、 多重速率網路系統之量測方法—HTMProbe 18
第四章 電力線通訊網路特徵量測實驗 27
第一節、 電力線通訊量測實驗環境設計 27
第二節、 網路量測工具於電力線通訊之量測實驗 29
第三節、 電力線通訊網路系統量測議題驗證 33
第四節、 HTMProbe於電力線通訊之量測實驗 37
第五章 電器負載於電力線通訊之效能影響評估 45
第一節、 電器負載之電磁干擾分類 45
第二節、 電器負載與電力線通訊設備之位置關係 48
第三節、 電磁干擾對效能影響之減緩方法 51
第六章 討論 54
第一節、 多重速率網路系統的網路特徵量測議題 54
第二節、 電力線通訊上的電磁干擾議題 55
第七章 結論與未來研究 57
附錄—網路路徑特徵評估 59
第一節、 網路路徑特徵簡介 59
第二節、 網路路徑特徵量測工具 65
參考資料 73

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