基于AODV無線路由協(xié)議的研究與性能優(yōu)化
[Abstract]:Mobile Ad Hoc network is a kind of mobile ad hoc wireless network, which has many advantages, so network applications are very extensive. But at the same time, it also has some problems, for example, the limited energy and bandwidth of nodes lead to premature death of nodes and cause routing breakage, dynamic topology changes bring more routing overhead and delay. Late, at the same time, the security problem is also a problem that can not be ignored, so the research of mobile Ad Hoc network routing protocol has become one of the hotspots of network research at home and abroad.
This paper introduces the routing protocol of mobile Ad Hoc network, and introduces the AODV routing protocol which is the most widely used one in detail. At the same time, it improves the shortcomings of AODV routing protocol in two aspects. Adding a backup routing flag to the original routing reply packet RREP to record the first three paths to the destination node, with priority, and setting an energy threshold for each node's residual energy, when the residual energy of a node is lower than this On the other hand, in the routing maintenance phase, on the basis of the original node maintenance routing table, the two-hop flag bit under the current node is added. In this paper, the routing repair is done in three ways. This method is a new local method. A combination of repair and source node repair.
In this paper, the popular network simulator (NS2) is used to compare the existing AODV routing protocols with the improved ones. The packet delivery rate, average end-to-end delay and normalized routing overhead are experimented under the condition of changing the maximum number of connections, maximum moving speed and node stop time. The average value is drawn into images, and the above three performances are obviously improved.
【學(xué)位授予單位】:燕山大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TN929.5
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