TY - GEN
T1 - EASE
T2 - 2005 Second Annual IEEE Communications Society Conference on Sensor and AdHoc Communications and Networks, SECON 2005
AU - Xu, Jianliang
AU - Tang, Xueyan
AU - Lee, Wang Chien
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2005
Y1 - 2005
N2 - Energy efficiency is one of the most critical issues in the design of wireless sensor networks. Observing that many sensor applications for object tracking can tolerate a certain degree of imprecision in location data of tracked objects, this paper studies precision-constrained approximate queries that trade answer precision for energy efficiency. We develop an Energy-conserving Approximate StoragE (EASE) scheme to efficiently answer approximate location queries by keeping error-bounded imprecise location data at some designated storage node. The data impreciseness is captured by a system parameter, i.e., approximation radius. We analyze the performance of EASE in terms of message complexity and derive the optimal setting of approximation radius. We show via extensive simulation experiments that, as compared to a conventional approach, the EASE scheme cuts down the network traffic by up to 96% and, in most cases, prolongs the network lifetime by a factor of 2-5.
AB - Energy efficiency is one of the most critical issues in the design of wireless sensor networks. Observing that many sensor applications for object tracking can tolerate a certain degree of imprecision in location data of tracked objects, this paper studies precision-constrained approximate queries that trade answer precision for energy efficiency. We develop an Energy-conserving Approximate StoragE (EASE) scheme to efficiently answer approximate location queries by keeping error-bounded imprecise location data at some designated storage node. The data impreciseness is captured by a system parameter, i.e., approximation radius. We analyze the performance of EASE in terms of message complexity and derive the optimal setting of approximation radius. We show via extensive simulation experiments that, as compared to a conventional approach, the EASE scheme cuts down the network traffic by up to 96% and, in most cases, prolongs the network lifetime by a factor of 2-5.
UR - http://www.scopus.com/inward/record.url?scp=33845484837&partnerID=8YFLogxK
U2 - 10.1109/SAHCN.2005.1557093
DO - 10.1109/SAHCN.2005.1557093
M3 - Conference proceeding
AN - SCOPUS:33845484837
SN - 0780390113
SN - 9780780390119
T3 - 2005 Second Annual IEEE Communications Society Conference on Sensor and AdHoc Communications and Networks, SECON 2005
SP - 396
EP - 405
BT - 2005 Second Annual IEEE Communications Society Conference on Sensor and AdHoc Communications and Networks, SECON 2005
Y2 - 26 September 2005 through 29 September 2005
ER -