Wireless sensor networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Power conservation and quality of surveillance in target tracking sensor networks
Proceedings of the 10th annual international conference on Mobile computing and networking
Gateway Placement for Latency and Energy Efficient Data Aggregation
LCN '04 Proceedings of the 29th Annual IEEE International Conference on Local Computer Networks
Optimal Base-Station Locations in Two-Tiered Wireless Sensor Networks
IEEE Transactions on Mobile Computing
Clustering in WSN with Latency and Energy Consumption Constraints
Journal of Network and Systems Management
Relay node placement in large scale wireless sensor networks
Computer Communications
Energy-efficient coverage problems in wireless ad-hoc sensor networks
Computer Communications
Sink repositioning for enhanced performance in wireless sensor networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Optimal multi-sink positioning and energy-efficient routing in wireless sensor networks
ICOIN'05 Proceedings of the 2005 international conference on Information Networking: convergence in broadband and mobile networking
On energy provisioning and relay node placement for wireless sensor networks
IEEE Transactions on Wireless Communications
MAC protocols for wireless sensor networks: a survey
IEEE Communications Magazine
Positioning of Base Stations in Wireless Sensor Networks
IEEE Communications Magazine
A multi-objective approach for data collection in wireless sensor networks
ADHOC-NOW'11 Proceedings of the 10th international conference on Ad-hoc, mobile, and wireless networks
Research challenges towards the Future Internet
Computer Communications
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Data collected by sensors often have to be remotely delivered through multi-hop wireless paths to data sinks connected to application servers for information processing. The position of these sinks has a huge impact on the quality of the specific Wireless Sensor Network (WSN). Indeed, it may create artificial traffic bottlenecks which affect the energy efficiency and the WSN lifetime. This paper considers a heterogeneous network scenario where wireless sensors deliver data to intermediate gateways geared with a diverse wireless technology and interconnected together and to the sink. An optimization framework based on Integer Linear Programming (ILP) is developed to locate wireless gateways minimizing the overall installation cost and the energy consumption in the WSN, while accounting for multi-hop coverage between sensors and gateways, and connectivity among wireless gateways. A traffic-variable scenario is also considered, where the network can go through high and low traffic operation points, and the topology is optimized accordingly. The proposed ILP formulations are solved to optimality for medium-size instances to analyze the quality of the designed networks, and heuristic algorithms are also proposed to tackle large-scale heterogeneous scenarios.