Title: A context-aware service framework for mobile ad hoc networks

Authors: Tzung-Shi Chen; Neng-Chung Wang; Gwo-Jong Yu; Hsin-Ju Chen

Addresses: Department of Computer Science and Information Engineering, National University of Tainan, Tainan 700, Taiwan ' Department of Computer Science and Information Engineering, National United University, Miao-Li 360, Taiwan ' Department of Computer Science and Information Engineering, Aletheia University, New Taipei 251, Taiwan ' Department of Information and Learning Technology, National University of Tainan, Tainan 700, Taiwan

Abstract: A mobile ad hoc network (MANET) is established by mobile devices without relying on a fixed infrastructure. MANETs usually have attractive applications with regard to intelligent transportation systems and digital life. In this paper, we propose a service framework for supporting context-aware environments in MANETs. A virtual overlay network and two novel approaches within this framework have been addressed to significantly improve the efficiency of the data delivery. The surrounding context of mobile nodes is used to determine our strategy adopting push-based or pull-based approaches. When a real-time event occurs in a node, a push-based approach is adopted to disseminate urgent messages to neighbouring nodes. On the contrary, a pull-based approach is adopted and a virtual backbone, namely a segment-tree virtual network, is constructed to conduct contextual information. Simulation results show that our proposed approach outperforms the existing publish/subscribe approach.

Keywords: context-aware services; MANETs; mobile ad hoc networks; overlay networks; publish-subscribe; service framework; simulation.

DOI: 10.1504/IJAHUC.2016.078115

International Journal of Ad Hoc and Ubiquitous Computing, 2016 Vol.22 No.4, pp.249 - 264

Received: 26 May 2014
Accepted: 11 Sep 2014

Published online: 03 Aug 2016 *

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