An adaptive data replication algorithm
ACM Transactions on Database Systems (TODS)
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Principles of distributed database systems (2nd ed.)
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MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
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MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
GPSR: greedy perimeter stateless routing for wireless networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
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WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
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WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
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Computer Networks: The International Journal of Computer and Telecommunications Networking
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LCN '01 Proceedings of the 26th Annual IEEE Conference on Local Computer Networks
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ICDCS '04 Proceedings of the 24th International Conference on Distributed Computing Systems (ICDCS'04)
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Proceedings of the 10th annual international conference on Mobile computing and networking
HEED: A Hybrid, Energy-Efficient, Distributed Clustering Approach for Ad Hoc Sensor Networks
IEEE Transactions on Mobile Computing
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ICDCS '05 Proceedings of the 25th IEEE International Conference on Distributed Computing Systems
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IEEE Transactions on Mobile Computing
A New Storage Scheme for Approximate Location Queries in Object-Tracking Sensor Networks
IEEE Transactions on Parallel and Distributed Systems
DCTC: dynamic convoy tree-based collaboration for target tracking in sensor networks
IEEE Transactions on Wireless Communications
BLR: beacon-less routing algorithm for mobile ad hoc networks
Computer Communications
Location management methods for third generation mobile systems
IEEE Communications Magazine
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Location management is an important issue for object tracking applications of wireless sensor networks. Since locations obtained by most positioning techniques are inherently imprecise, users may send approximate location queries with precision constraints to trade for energy consumption of sensor nodes. Therefore, we propose an Adaptive Location Management scheme called ALM to process approximate location queries. ALM employs a two-tier storage architecture (i.e., centric storage node and local storage node) to facilitate approximate query resolving and to reduce the energy consumption of sensor nodes. We propose a storage node relocation and replication mechanism, which can create, remove replicas of storage nodes and adjust the positions of storage nodes according to the location queries and updates. As such, the number of forwarding location update and query messages is reduced by the proposed storage node relocation and replication mechanism, thereby conserving more energy. The experimental results show that compared with EASE (Xu et al. (2008) [18]), ALM is able to reduce the number of transmission messages and the energy consumption of sensor network, and prolong the network lifetime.