NDLI: Distributed decision fusion with a random-access channel for sensor network applications

Content Provider	IEEE Xplore Digital Library
Author	Yingqin Yuan Kam, M.
Copyright Year	1963
Abstract	The envisioned use of sensor networks for military and civilian applications calls for the deployment of a large number of sensors for extended periods over wide geographical areas. Due to energy and bandwidth constraints, most sensor fields would be "dormant," initiating communication only when a threat is detected. Many architectures under consideration call for compression of locally sensed data into binary "target/no target" decisions. These schemes use a common channel for communication between local detectors (LDs) and the decision fusion center (DFC) that integrates the multiple detector decisions. Unlike most parallel fusion schemes, which use a dedicated communication channel between every LD and the DFC, sensor fields would employ a single shared, time-slotted communication link for all LDs to transmit decisions to the DFC. In this paper, we introduce two window-based methods for managing traffic over this channel. The first allows simultaneous messages to collide. The DFC uses the statistics of the channel states (i.e., the numbers of successful transmissions, idle slots, and collisions during a specified time period) to make its global target/no target decision. The second method uses a simple collision resolution algorithm (CRA), similar to slotted-ALOHA, with dynamically updated retransmission probability. With this scheme, the DFC makes its decision based on data communicated successfully within a specified time window. Overall performance of the two approaches are presented and compared. Simple rules are developed for assessing the conditions under which each one is preferred.
Sponsorship	IEEE Instrumentation and Measurement Society Bureau international des poids et mesures IEEE International Bureau of Weights and Measures (BIPM) URSI NBS Agency Ind. Sci. & Technol., Min. Int. Trade & Ind. Sci. Council Japan International Union of Pure and Applied Physics (IUPAP) NIST NRCC National Conference of Standards Laboratories (NCSL) Allen Osborne Associates Andeen-Hagerling, Inc. Ballantine Lab. Inc. Clarke-Hess Communications Research Corp. Fluke Corporation Guildline Instruments Hewlett-Packard Co. Julie Res. Lab. Inc. Keithley Instruments, Inc. Measurements International Ltd. Canada QuadTech Inc. Quantum Design Inc. Rotek Instrum. Corp. Tegam Inc. Tektronix Inc
Starting Page	1339
Ending Page	1344
Page Count	6
File Size	239391
File Format	PDF
ISSN	00189456
Volume Number	53
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sensor fusion Digital-to-frequency converters Detectors Bandwidth Communication channels Road accidents Statistics Probability Performance analysis Bayesian methods
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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