The Cricket location-support system
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Directed diffusion: a scalable and robust communication paradigm for sensor networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
A scalable location service for geographic ad hoc routing
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
The cricket compass for context-aware mobile applications
Proceedings of the 7th annual international conference on Mobile computing and networking
Dynamic fine-grained localization in Ad-Hoc networks of sensors
Proceedings of the 7th annual international conference on Mobile computing and networking
Geometric spanner for routing in mobile networks
MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
Routing with guaranteed delivery in ad hoc wireless networks
Wireless Networks
A two-tier data dissemination model for large-scale wireless sensor networks
Proceedings of the 8th annual international conference on Mobile computing and networking
GHT: a geographic hash table for data-centric storage
WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
Multi-dimensional range queries in sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
An evaluation of multi-resolution storage for sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
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We propose a Spatial-based Multi-resolution Data Dissemination(SMRDD) scheme for data retrieval at multiple levels of detail in wireless sensor networks. In addition to saving energy by avoiding query flooding and extra data transmission for data storage elsewhere, SMRDD achieves further energy efficiency by reducing dissemination of redundant data. In SMRDD, instead of being addressed to nodes, queries are sent to pixel points, a set of carefully selected locations across the sensor field, on the support of a geographic routing protocol. The query finally reaches the home node of the pixel point, the node geographically closest to the pixel point, which reports data to sinks in response. The density of the pixel points corresponds to data resolution level. The higher the density, the higher the data resolution level. The highest density of pixel points is determined by the sensing range of sensors for the application, which allows sensing ranges of home nodes of all pixel points to cover the whole sensor field. Analysis and simulation results show that the performance of our method is much better than early flooding based methods like Directed Diffusion.