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The Research on Multicast Routing in Sensor Networks

Author: ChenYu
Tutor: LinYaPing
School: Hunan University
Course: Computer Software and Theory
Keywords: Sensor Networks Routing Multicast Connected dominating set Gradient Spiral Tree
CLC: TN929.5
Type: Master's thesis
Year: 2005
Downloads: 255
Quote: 1
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Abstract


Sensor networks because of its unique advantages in the military and many civilian areas has broad application potential , being more and more attention on the various aspects of sensor network research has become the current academic research hotspot . Sensor network routing algorithm in the network layer is a key research on the topic. Since the energy of nodes , storage and other aspects of computing resource constraints , sensor networks, widely used in data aggregation techniques to conserve energy, so the broadcast and multicast communication is an important sensor network communication means . This paper focuses on sensor networks multicast routing algorithms. This paper briefly describes the multicast routing algorithm in the traditional wired networks and mobile Ad-hoc network in the application, and discuss the relevant comparative indicators , the relevant multicast routing protocols are qualitative comparison of the design suitable for sensor networks provide the basis for multicast routing algorithm . For densely distributed sensor networks , this paper proposes a minimum connected dominating set based multicast routing algorithm , the algorithm gives a minimum connected dominating set of distributed computing method, using this method to create a network dominating set of nodes connected subnets and set dominating set for the cluster head node on the network layer, so that limits packet forwarding between the cluster head node , the algorithm can effectively reduce packet generation, thereby saving energy node . For sensor networks each node can act as a signal source , this paper presents a gradient-based routing algorithm , the algorithm uses the shortest path tree structure, with lower latency and can better adapt to the node failure or node topology changes caused by movement . Experimental results show that the algorithm can save considerable energy cost , with good performance. Based on the above algorithm , this paper also introduces the concept of spiral tree , we propose a new routing algorithm, the algorithm uses spiral tree in order to ensure the robustness of the tree , making the link / node failures packets can still be along the \path Forwarding without loss, a certain mobility of the node , the algorithm still has better performance.

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