Sciweavers

805 search results - page 46 / 161
» Spatial queries in sensor networks
Sort
View
ICPPW
2006
IEEE
14 years 2 months ago
An Adaptive Directed Query Dissemination Scheme for Wireless Sensor Networks
This paper describes a directed query dissemination scheme, DirQ that routes queries to the appropriate source nodes based on both constant and dynamicvalued attributes such as se...
Supriyo Chatterjea, Simone De Luigi, Paul J. M. Ha...
INFOCOM
2007
IEEE
14 years 3 months ago
Shape Segmentation and Applications in Sensor Networks
—Many sensor network protocols in the literature implicitly assume that sensor nodes are deployed uniformly inside a simple geometric region. When the real deployment deviates fr...
Xianjin Zhu, Rik Sarkar, Jie Gao
ICN
2005
Springer
14 years 2 months ago
An Energy Constrained Multi-hop Clustering Algorithm for Wireless Sensor Networks
A wireless sensor network is a new kind of wireless Ad-Hoc network consisting of a large number of small low cost, power constrained sensors deployed in a large area for gathering...
Navin Kumar Sharma, Mukesh Kumar
ICASSP
2008
IEEE
14 years 3 months ago
Performance characteristics of collaborative beamforming for wireless sensor networks with Gaussian distributed sensor nodes
Collaborative beamforming has been recently introduced in the context of wireless sensor networks (WSNs) to increase the transmission range of individual sensor nodes. In this pap...
Mohammed F. A. Ahmed, Sergiy A. Vorobyov
FUZZIEEE
2007
IEEE
14 years 23 days ago
A System for Querying with Qualitative Distances in Networks
A central role of Geographic Information Systems (GIS) is to allow the identification and visualisation of relevant spatial features from typically large volumes of data. This requ...
Carl P. L. Schultz, Hans W. Guesgen, Robert Amor