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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/88134

    Title: 行動隨意網路中多播路由之探討
    Other Titles: Research on multicast routing in mobile ad-hoc networks
    Authors: 朱庭毅;Chu, Ting-Yi
    Contributors: 淡江大學電機工程學系碩士班
    莊博任;Chuang, Po-Jen
    Keywords: 隨意行動網路;樹狀網路;標籤式網路;多播路由;Mobile Ad-hoc Network (MANET);tree based;label based;Multicast routing
    Date: 2013
    Issue Date: 2013-04-13 12:02:19 (UTC+8)
    Abstract: 路由是組成網路的一個基礎,為了讓MANET實現,高效和有效的路由協定是一個關鍵的議題。基本上路由協定可先畫分成兩大類,單播(Unicast)和多播(Multicast)。在MANET的應用領域中,快速的開發(Rapid development)和動態的重建(Dynamic reconfiguration)是很重要的。像是戰場上的軍用設施、醫療研究、救援地點,或是參與者需要使用移動裝置並且交換訊息的場合。這些應用使得多播操作變得受到重視。像是在需要傳送多件副本資料時,即可節省很多時間。並且降低傳輸消耗(Transmission overhead)和能量消耗(Power consumption)。因此多播路由在MANET中扮演著一個極為重要的角色。
    Mobile Ad-hoc Network (MANET) usually apply mobile devices communicate with others, without additional base station. Along with time vicissitude, technical developed, in the same area, the mobile devices increased, so communication between devices become much complicated. Data bandwidth is constant, but data flow increased, it makes usage of control packet and maintain of transmission path between nodes become an important issue. How to make data transmission and path maintain more efficient in incremental nodes with better routing protocol is a good research topic.
    There are many problems need to overcome in routing protocol. According to difference of topology in MANET, it can be separated into mesh based and tree based. Based on mesh, in the beginning of building topology and establish routes need lots of control packets to set up and maintain. It has good performance on stability of path and repairing invalid path. In tree based, it has a core node to manage members in a group. It means in every group there is a node to maintain its members. Control packets will be reduced greatly. The path between source and destination is single, it will be impact when the path invalid. On the other hand, in mesh based, each node has one or more path to source or destination and it can change path in time then keeping transmitting data. Relatively, it needs more control packet on maintain path and topology, thereby affects transmission of data flow. In recent year, data flow and receiver are tremendously increased, the excessive control packets affect not only transmission of data but delay time of delivery even ratio of successful delivery. Therefore, it is good research topic to use tree based on routing even with path stability problem if the cost of path building and maintain can be less than the cost of repairing invalid path.
    In this paper, we proposed an advanced label based and tree based multicast routing protocol. With new label mechanism when new topology builds, and backup path selects. This improvement reduces control packets and maintain data transmission path with backup route. When data flow dramatic increased we still keep good delivery ratio. In simulation results, our control packets are a little more than other method, but our delivery ratio keeps in a good statue even better than others. This is also our approach highlights
    Appears in Collections:[電機工程學系暨研究所] 學位論文

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