TY - GEN
T1 - Processing precision-constrained approximate queries in wireless sensor networks
AU - Wu, Minji
AU - Xu, Jianliang
AU - Tang, Xueyan
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2006
Y1 - 2006
N2 - A lot of research efforts have been devoted to improving energy efficiency for wireless sensor networks by exploring distributed data storage and in-network query processing techniques. In this paper, we present a generic two-tier data storage strategy for answering precision-constrained approximate queries in a sensor network. The basic idea is to keep two versions of data in the network. A high-precision version is kept at the sensor node that captures the data while a low-precision version is maintained at the base station. We develop query processing and node refreshment strategies for various types of approximate queries under the two-tier storage. Our extensive experiments show that the two-tier storage strategy outperforms the basic centralized storage scheme by an order of magnitude in terms of network lifetime under various system configurations.
AB - A lot of research efforts have been devoted to improving energy efficiency for wireless sensor networks by exploring distributed data storage and in-network query processing techniques. In this paper, we present a generic two-tier data storage strategy for answering precision-constrained approximate queries in a sensor network. The basic idea is to keep two versions of data in the network. A high-precision version is kept at the sensor node that captures the data while a low-precision version is maintained at the base station. We develop query processing and node refreshment strategies for various types of approximate queries under the two-tier storage. Our extensive experiments show that the two-tier storage strategy outperforms the basic centralized storage scheme by an order of magnitude in terms of network lifetime under various system configurations.
UR - http://www.scopus.com/inward/record.url?scp=33751052980&partnerID=8YFLogxK
U2 - 10.1109/MDM.2006.126
DO - 10.1109/MDM.2006.126
M3 - Conference proceeding
AN - SCOPUS:33751052980
SN - 0769525261
SN - 9780769525266
T3 - Proceedings - IEEE International Conference on Mobile Data Management
SP - 31
EP - 38
BT - 7th International Conference on Mobile Data Management, 2006. MDM 2006
PB - IEEE
T2 - 7th International Conference on Mobile Data Management, 2006. MDM 2006
Y2 - 10 May 2006 through 12 May 2006
ER -