Name
Abstract | ||
|---|---|---|
Many location based services, such as a those used in healthcare facilities to track medical personnel and equipment, need to keep track of mobile entities across wide areas. These services can be realized in a cost-effective and efficient manner using tiered sensor networks comprised of multiple wireless sensor networks connected by an IP network. To simplify the realization of such services, we present MLDS, a Multi-resolution location directory service for tiered sensor networks. MLDS provides a rich set of spatial query services ranging from simple queries about entity location, to complex nearest-neighbor queries. Furthermore, MLDS supports multiple query granularities which allow an application to achieve the desired tradeoff between query accuracy and communication cost. We implemented MLDS on Agimone, a unified middleware for sensor and IP networks. We then deployed and evaluated the service on a tiered sensor network testbed consisting of tmotes and PCs. Our experimental results show that, when compared to a centralized approach, MLDS achieves significant savings in communication cost while still providing a high degree of accuracy, both within a single sensor network and across multiple sensor networks. |
Year | DOI | Venue |
|---|---|---|
2008 | 10.1016/j.comcom.2008.01.036 | Computer Communications |
Keywords | Field | DocType |
Sensor network,Location directory,Spatial query,Mobile agent | Mobile computing,Middleware,Wireless network,Computer science,Sensor array,Testbed,Location-based service,Computer network,Spatial query,Wireless sensor network | Journal |
Volume | Issue | ISSN |
31 | 6 | Computer Communications |
Citations | PageRank | References |
2 | 0.37 | 20 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Sangeeta Bhattacharya | 1 | 198 | 11.83 |
| Chien-Liang Fok | 2 | 663 | 39.24 |
| Chenyang Lu | 3 | 6474 | 385.38 |
| Gruia-Catalin Roman | 4 | 3148 | 290.45 |