臺灣博碩士論文加值系統

隨著網際網路的蓬勃發展，原先設計的 IPv4 協定已漸不敷使用，受限於未考慮IP位址不足、網路服務品質、移動性(mobility)、安全性(security)等議題，因而有IPv6協定的誕生。而在IPv6網路中，網路節點更易於具備多重網路界面或多重IPv6位址，形成主機多重連線(host multihoming)，衍生許多相關議題，因此，當接取網路有部分不能使用任何或壅塞時，如何利用IPv6多重連線技術，使同一服務能不中斷，且繼續使用其他可用接取網路，將是一大挑戰。
另一方面，人們對多媒體服務之期盼，群播(multicast)即適合提供此類即時性的服務，花費較少的網路資源就能將封包傳至群播群組(multicast group)。本論文提出之多重連線群播多媒體(Multihomed Multicast-based Multimedia，簡稱3M)串流系統，當IPv6主機身處多個接取網路時，利用多重連線技術、IPv6群播，對目前所有網路界面均加入(join)欲觀看之群播群組，從多個網路界面同時接收多媒體串流，故能收到來自同一群播群組之相同多份群播封包，即使某一接取網路壅塞或不能使用，或使用者正進行水平交遞(horizontal handoff)或垂直交遞(vertical handoff)時，仍能透過其他可用的網路容錯備援，無縫地進行多媒體串流，經由實驗與實作程式得知在某一接取網路不能使用時，能繼續利用其他接取網路，且過程無封包遺失。

With the rising of the development Internet, the originally designed IPv4 protocol is no longer satisfactory. Due to the constraints on not taking the shortage of IP addresses, quality of services, mobility, and the security into consideration, leads to the existence of the new IPv6 protocol. In IPv6 networks, the network nodes are easier to have multiple network interfaces or multiple IPv6 addresses forming host multihoming, resulting in many related issues. Therefore, it would be a great challenge to use IPv6 multihoming to make the same service continue when any access networks are not available or congestion.
On the other hand, with people’s anticipation on multimedia services, multicast is suitable for providing real time multimedia services, by using less network resources, it could send the packet to multicast group. In this paper, Multihomed Multicast-based Multimedia (3M) streaming system is proposed, when IPv6 hosts are in multiple access networks, by using IPv6 multihoming and IPv6 multicast, for all network interfaces are join to the same multicast group, so multimedia streaming of the same multicast group can receive from all interfaces, even when any of the access networks is congested, not available, or when horizontal handoff or vertical handoff happens, the users could still proceed multimedia streaming seamless with other available resilience network without interruption. After our 3M streaming system implementation and experiment, when any access network is not available, it can still use other available networks without any packet loss.

目錄
第一章 緒論1
1.1概要1
1.2研究動機2
1.3研究目標3
1.4論文架構4
第二章 背景知識與相關研究5
2.1IPv6與Mobile IP5
2.2多重連線技術相關研究11
2.2.1以主機為基礎之多重連線技術15
2.2.1.1主機多重技術解決方案15
2.2.1.2傳輸層解決方案17
2.2.1.3相關移動性解決方案17
2.2.2以路由器/網路為基礎之多重連線技術18
2.2.3多重連線技術相關論文之研究19
2.3IPv6群播之研究20
2.4IP Mobility交遞之研究21
第三章 3M串流系統之設計22
3.1網路環境與功能設計22
3.2網路界面偵測模組27
3.3多重群播加入模組29
3.4群播串流合併模組31
3.5串流監控模組33
第四章 3M串流系統之實作35
4.1系統實作架構35
4.2系統配備及實作網路環境38
4.33M串流系統功能42
第五章 3M串流系統之評估與測試48
5.1實驗一：建置系統與網路環境48
5.2實驗二：在相同IPv6網域下驗證多重連線之測試51
5.3實驗三：在不同IPv6網域下驗證多重連線之測試55
5.4實驗四：動態偵測新增網路界面之測試58
5.5實驗五：使用有線網路輔助WLAN交遞之測試60
5.6實驗六：於不穩定的WLAN中多重連線之測試62
第六章 結論與未來發展方向65
6.1結論65
6.2未來發展方向65
參考文獻67
圖目
圖2-1 IPv4網路定址6
圖2-2 原先IPv6 Aggregatable Global Unicast Address(RFC 2373,RFC2374)7
圖2-3 IPv6 Aggregatable Global Unicast Address(RFC 3513)7
圖2-4 Mobile IPv4示意圖8
圖2-5 Mobile IPv6 Bidirectional Tunneling Mode10
圖2-6 Mobile IPv6 Route Optimization Mode10
圖2-7考量site多重連線效能示意圖13
圖2-8 Host-Centric IPv6 Multihoming16
圖2-9 群播路由協定分類圖20
圖3-1系統網路環境23
圖3-2單一設備接取多重網路23
圖3-3 3M串流系統整體功能架構圖24
圖3-4行動主機於多重連線環境中交遞示意圖26
圖3-5 NIDM模組設計流程圖28
圖3-6 MMJM模組設計流程圖29
圖3-7 MSMM模組設計流程圖32
圖3-8 SMM模組設計流程圖34
圖4-1 VideoLAN解決方案35
圖4-2 行動主機協定堆疊示意圖36
圖4-3 VLC伺服端播放串流37
圖4-4 VLC客戶端接收串流38
圖4-5 3M串流系統實作之網路環境39
圖4-6 偵測目前網路界面42
圖4-7 於VLC伺服端播放多媒體串流43
圖4-8 群播位址格式44
圖4-9 於VLC客戶端指明網路界面eth0接收多媒體串流45
圖4-10 利用VLC內建指令從eth0與eth1接收多媒體串流46
圖4-11 利用MMJM與MSMM接收多媒體串流47
圖5-1 IPv6主機於相同IPv6網域下51
圖5-2 切換網路時序圖52
圖5-3 即時流量監控圖53
圖5-4 同一LAN下封包序號與到達時間之關係圖54
圖5-5 同一LAN下單位時間內所收到之封包數54
圖5-6 IPv6主機於不同IPv6網域下55
圖5-7 不同LAN下封包序號與到達時間之關係圖57
圖5-8 不同LAN下單位時間內所收到之封包數57
圖5-9 動態新增網路界面示意圖59
圖5-10 有線網路輔助WLAN交遞61
圖5-11 IPv6主機漸遠離目前AP之SNR圖63
圖5-12 單位時間VLC收到的封包數64
表目
表2-1 IPv4與IPv6比較表6
表2-2 IPv6位址類型表7
表2-3 Mobile IP比較表11
表2-4 多重連線技術協定比較表19
表3-1 群播socket選項30
表4-1 3M串流系統所使用之硬體設備40
表4-2 3M串流系統之發展環境41
表4-3 3M串流系統研發工具41
表4-4 群播位址範圍表44
表5-1 VLC客戶端所收到的封包數62

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