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Research on Opportunistic Routing in Moble AD HOC Networks

Author: NieZhi
Tutor: XuYouYun
School: Shanghai Jiaotong University
Course: Communication and Information System
Keywords: Mobile AdHoc Network Routing algorithm Agreement Opportunistic Routing Streaming media business
CLC: TN929.5
Type: Master's thesis
Year: 2010
Downloads: 260
Quote: 0
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Abstract


Mobile Ad hoc network is a special kind of new wireless mobile networks, the node mobility, and it is the combination of mobile communication and computer network, capable of rapid deployment, runtime does not depend on the base station fixed communication facilities, network The node is a portable communication terminal can be moved using the computer network, the packet switching mechanism, the exchange of information in the network. Mobile Ad hoc network routing design has always been a difficult and key. Compared to fixed wireline network network, mobile Ad hoc network routing challenges in many ways, including node mobility, the variability of the network topology, the transmission of multi-hop nature of wireless channel unreliability. In recent years, called opportunistic routing routing techniques have been proposed and widespread concern. The biggest difference with the traditional routing, opportunistic routing does not use a fixed route, but the relay node according to the routing protocols independently choose the next hop node forwarding. The this forwarding mode continues to go until the destination node receives a packet. Each packet transmission, have more opportunities than the traditional route has been received, so the opportunities routing eponymous. The work done in this article is mainly in mobile Ad hoc the networking opportunities routing design, the main contribution: (1) a new opportunity routing method, the opportunity to consider the subsequent path routing. In this route, the node will consider a jump hop transmission, in order to make a decision whether it should participate in forwarding data packets. Comparative greedy forwarding strategy routing protocol, consider the subsequent path forwarding strategy to effectively reduce the phenomenon of no subsequent forwarding nodes to improve the success rate of data transfer and network throughput, the network has better reliability. (2) This paper introduces the multi-hop wireless real-time transmission of streaming media business basic status of the opportunistic routing and transmission of real-time streaming media business to do a combination of an exploratory, raised an Ad Hoc applied to the transmission of real-time streaming media business network routing method: Dynamic mesh routing. This method uses a dynamically assigned a few grid area as a candidate region for transmission grid static, the high dynamic transformation of the network nodes, it is a good dynamic transmission characteristics; handshake signals and the method of its grid without internal simplified the previous mesh network topology management, and can adapt to the characteristics of the source of transmission of the streaming media business. Chapter two routing methods OPNET network simulation, compared to the existing routing technology, by comparison, we found that the new routing technology in this paper, there is a certain critical performance upgrade, with a certain degree of innovation and practicality.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
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