結論與未來發展 - SCTP上的延遲取向無縫式轉換之研究

在本論文中，以測量網路 RTT，輔以並傳的方式，加以利用所有可用的網路介面，提出一個能有效率擁有快速反應時間的無縫式轉換方法。此方法有以下的特性：

z 用 RTT thresholding 方法表示路徑的狀態：

以 RTT 資訊，界定出路徑反應時間可能變化的範圍，能良好的表示路徑的狀況，為路徑轉換的抉擇提供合理的依據。

z 以反應時間最快的路徑來傳輸：

依照 RTT thresholding 所描述的路徑狀況選擇最快速的路徑，達到最快反應時間的需求。

z 使用並傳來改善反應時間：

當發現路徑狀況不穩定，難以抉擇較快速的路徑時，使用並傳的方法，以降低只使用單一路徑可能導致的延遲。

基於所設計方法的性質，可以歸納出以下的未來發展：

z 更精準的路徑狀態表示法：

本論文提出的 RTT thresholding 方法，是用 RL/RH 區間來表示路徑狀態。用以選擇 RL/RH 的紀錄時間越長，能容忍越低比例的暫態所造成的影響，卻也容易造成並傳時間的拉長。因此是否有更好的方法來決定路徑反應時間可能變化的範圍？

z 超過兩個以上的網路路徑：

本論文的路徑轉換方法是依照兩條路徑的相對狀況加以抉擇。但若擁有超過兩個以上的網路路徑，其相對狀況將更加

複雜，此時在不穩定狀況下該選擇使用哪些網路介面來並傳也是相當值得研究的主題。

z 可移動性：

行動裝置的漫遊可能會造成可使用的網路路徑動態的狀態改變或增減。因此未來可以整合 Mobile SCTP[15]的規格，

以達到對可移動性的支援。

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在文檔中 SCTP上的延遲取向無縫式轉換之研究 (頁 50-54)