Research on multicast routing in Mobile Ad-hoc Networks
| Autor: | Ting-Yi Chu, 朱庭毅 |
|---|---|
| Rok vydání: | 2013 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 101 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 |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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