Research on topology of vehicular sensor networks based on directed diffusion

• Published in: 2015 International Conference on Information and Communications Technologies (ICT 2015) p. 29
• Main Authors: Zhao Xiao-chao, Zheng Ming-cai, Zhao Jin-qin
• Format: Conference Proceeding
• Language: English
• Published: Stevenage, UK IET 2015; The Institution of Engineering & Technology
• Subjects: Communication network design, planning and routing; Mobile radio systems; Wireless sensor networks; vehicular ad hoc networks; logical topology based on directed diffusion; real-time connectivity; local clusters; global sinking node; wireless sensor networks; vehicle-node; local cluster gradient value; global core; vehicular ad-hoc networks; data aggregating gradient value; telecommunication network topology; VANET; HLT-DD topology; vehicular sensor networks; VSN; pattern clustering; SINK; position mechanism; roadside-node
• ISBN: 9781849199940; 1849199949
• DOI: 10.1049/cp.2015.0219

In view of the characteristics of vehicular sensor networks (VSN), a hybrid logical topology based on directed diffusion (HLT-DD) is presented. In the HLT-DD topology, every roadside-node or vehicle-node is assigned a local cluster gradient value and a data aggregating gradient value according to its position and the directed diffusion mechanism. With the help of the local cluster gradient value of roadside-node, the huge scale VSN is divided into a certain number of clusters taking roadside-nodes as local cluster cores respectively. By the data aggregating gradient value of roadside-node or vehicle-node, the local clusters are linked into a full connected network logical topology taking the global sinking node (SINK) as the global core. Theoretical analysis and simulation results validate that the HLT-DD topology reduces the time consumption of maintaining efficient logical topology, improves the real-time connectivity, and improves the comprehensive performances of VSN.