A framework of mobile context management for supporting context-aware environments in mobile ad hoc networks

Authors:
Tzung-Shi Chen;Gwo-Jong Yu;Hsin-Ju Chen
Affiliations:
National University of Tainan;Aletheia University;National University of Tainan
Venue:
IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
Year:
2007

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Abstract

In this paper, we propose a framework for supporting context-aware environments in mobile ad hoc networks (MANETs). A virtual overlay network and two novel approaches in this framework are addressed to significantly improve the efficiency of data delivery in MANETs. The surrounding context of mobile nodes is used to determine which scheme, push-based or pull-based approaches, is adopted. When a real-time event happened in a node, push-based approach is adopted to disseminate urgent messages to its neighboring nodes. On the contrary, pull-based approach is adopted by building a virtual backbone, namely segment-tree, for seeking for more contextual information. Finally, the simulation is conducted to illustrate the performance achievements that our methods outperform the existing publish/subscribe approach based on AODV routing protocol.