Sink-Independent Model in Wireless Sensor Networks

Authors:
Sang-Sik Kim;Kwang-Ryul Jung;Ki-Il Kim;Ae-Soon Park
Affiliations:
Electronics and Telecommunications Research Institute,;Electronics and Telecommunications Research Institute,;Department of Information Science, Research Institute of computer and Information Science, GyeongSang National University, 900 Gajwa-dong, Jinju, 660-701, Korea;Electronics and Telecommunications Research Institute,
Venue:
ICCS '07 Proceedings of the 7th international conference on Computational Science, Part IV: ICCS 2007
Year:
2007

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Abstract

Wireless sensor networks generally have three kinds of objects: sensor nodes, sinks, and users that send queries and receive data via the sinks. In addition, the user and the sinks are mostly connected to each other by infrastructure networks. The users, however, should receive the data from the sinks through multi-hop communications between disseminating sensor nodes if such users move into the sensor networks without infrastructure networks. To support mobile users, previous work has studied various user mobility models. Nevertheless, such approaches are not compatible with the existing routing algorithms, and it is difficult for the mobile users to gather data efficiently from sensor nodes due to their mobility. To improve the shortcomings, we propose a view of mobility for wireless sensor networks and propose a model to support a user mobility that is independent of sinks.