| Summary: | 碩士 === 中原大學 === 電機工程研究所 === 98 === Abstract
In this thesis, we propose An AODV based reliable backup route scheme in Mobile Ad Hoc Networks. It’s used to reconstruct a new transmission path when the original path broken to prevent the interruption of data transmission. By establishing reliable backup route, the cost of time-consuming can be reduced, and the data transmission rate can be improved.
Routing protocol proposed in this thesis has several design focus. At first, the route discovery scheme is proposed. We use RREQ (Route Request) packets to search the transmission route, and record the nodes contained in the transmission route for RREQ (Route Request) packets. By the way, we can find the disjoint paths. Second, the route reply scheme is given. We use RREP (Route Reply) packets reply the transmission route to the source node, and record the data of the route for RREP (Route Reply) packets. Third, the route selection and maintenance scheme is presented. We select the primary path and backup paths they are reliable and mutually disjoint by using the record in RREQ and RREP packets. Finally, the simulation results show that the packet delivery ratio, average end-to-end delay and control overhead can be improved effectively.
The contributions of proposed scheme are as follows:
(1) By using backup route, the cost of re-searching time can be reduced.
(2) The control overhead and network bandwidth consumption can be reduced.
(3) The data transmission rate can be improved.
We believe that these mechanisms can improve the transmission performance effectively. The results of our research in thesis show that it will be much helpful to future research in transmission of MANET.
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