A Module Management Scheme for Dynamic Reconfiguration

Authors:
Hong Min;Junyoung Heo;Yookun Cho;Kahyun Lee;Jaegi Son;Byunghun Song
Affiliations:
School of computer science & engineering, Seoul National University, Seoul, Korea;School of computer science & engineering, Seoul National University, Seoul, Korea;School of computer science & engineering, Seoul National University, Seoul, Korea;School of computer science & engineering, Seoul National University, Seoul, Korea and LG Electronics,;School of computer science & engineering, Seoul National University, Seoul, Korea and Korea Electronics Technology Institute,;School of computer science & engineering, Seoul National University, Seoul, Korea and Korea Electronics Technology Institute,
Venue:
ICCSA '08 Proceeding sof the international conference on Computational Science and Its Applications, Part I
Year:
2008

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Abstract

Wireless sensor nodes are used to sense and transmit information from target region such as nature and industrial environment. In those nodes, dynamic reconfiguration is required to update codes, change functions, and maintain programs, because each node is deployed in a remote region. Currently, many dynamic reconfiguration schemes have been researched in wireless sensor networks. However, they are still inefficient in terms of energy usage, and not capable to manage multiple modules. In this paper, we present an efficient module management scheme for dynamic reconfiguration of sensor operating systems. To minimize the updating cost of each module that has a dependency relation, it provides a new `module update' interface, which is different from the module insertion and deletion methods. It also supports dependency and duplication checker to manage modules reliably. Our experimental results show that our scheme outperforms existing schemes in terms of both the execution time and the energy consumption.