NDLI: Using Soft-Line Recursive Response to Improve Query Aggregation in Wireless Sensor Networks

Content Provider	IEEE Xplore Digital Library
Author	Xiaoming Lu Spear, M. Levitt, K. Matloff, N.S. Wu, S.F.
Copyright Year	2008
Description	Author affiliation: Dept. of Comput. Sci., UC Davis, Davis, CA (Xiaoming Lu; Spear, M.; Levitt, K.; Matloff, N.S.; Wu, S.F.)
Abstract	In large wireless sensor networks (WSNs), each hop might incur varying delays due to medium access contention, transmission and computation delays. Fast and efficient query responses are essential to network performance and maintenance. To save energy in battery-powered sensors, it is desirable that data be aggregated or compressed along the way toward the base-station (BS). The common method to aggregate data from network edge to the BS uses a hard-line precomputed timer that requires sensors near the network edge to respond to a query earlier than sensors in the vicinity of the BS [1], [2]. Such rigid scheduling ignores the WSNs's topology and stability. Aggregation opportunities are wasted if the query response timer is set incorrectly. Estimating and allocating precise per- hop communication timers for each node in a large WSN is difficult because timing depends on the network dynamics. We develop a novel, generic and scalable method, which we call soft-line recursive response (SRR), that bases response-wait on actual response times to previous queries using a history buffer, and therefore, is tolerant of network faults or temporal delays. Our simulations show that SRR can improve aggregation opportunities up to 120% over the hard-line approach, while increasing delay less than 5%. SRR reduces query response traffic and data redundancy in both homogeneous and heterogeneous static and mobile WSNs with a maximum O(N) transmission overhead in large WSNs of N nodes and $O(log_{b})$ update cost where b is the history buffer size.
Starting Page	2309
Ending Page	2316
File Size	187236
Page Count	8
File Format	PDF
ISBN	9781424420759
DOI	10.1109/ICC.2008.440
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless sensor networks Delay History Computer networks Aggregates Network topology Stability Timing Disruption tolerant networking Telecommunication traffic
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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