DTN中的路由技术(英文版)
37页1、Mobility Increases the Connectivity of K-hop Clustered Wireless Networks,Qingsi Wang, Xinbing Wang Department of Electronic Engineering Shanghai Jiao Tong University, China Xiaojun Lin Department of Electrical and Computer Engineering Purdue University, USA,Mobility Increases the Connectivity of K-hop Clustered Wireless Networks,2,Outline,Introduction Background Motivations Objectives K-hop Clustered Network Models Main Results and Intuitions The Impact of Mobility Concluding Remarks,3,Backgroun
2、d I/II,Connectivity is a basic concern in designing and implementing wireless networks. Three main schemes of connecting strategies are proposed in the literature. Distance-based strategy Number-of-neighbor-based strategy Sector-based strategy,Mobility Increases the Connectivity of K-hop Clustered Wireless Networks,4,Background II/II,The connectivity of networks under the distance-based connecting strategy is widely studied: The critical value of , overall connectivity can be established with pr
3、obability approaching one as if and only if 1 2.,Mobility Increases the Connectivity of K-hop Clustered Wireless Networks,1 P. Gupta and P.R. Kumar, “Critical Power for Asymptotic Connectivity in Wireless Networks”, 1998. 2 M.D. Penrose, “The Longest Edge of the Random Minimal Spanning Tree”, 1997.,5,Motivation,The network models studied in these prior works are non-clustered (or flat) and stationary networks. Clustering and mobility have been found to improve various aspects of network performa
4、nce. Studies on the connectivity of mobile and clustered networks are quite limited. - We dont even know the definition of the connectivity under such circumstances.,Mobility Increases the Connectivity of K-hop Clustered Wireless Networks,Mobility Increases the Connectivity of K-hop Clustered Wireless Networks,6,Objective I/II,Open question: What is the impact of mobility on connectivity of clustered networks subject to delay constraints? We study The critical transmission range for connectivity
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