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aggregate query processing in wireless sensor networ:

Processing approximate aggregate queries in wireless ...

2006-12-1 · Consider a node Root, which initiates a continuous query over the values observed by a set of data sources, and requests that the results of this query be reported to it at regular time periods.The time interval between two such consecutive time periods is referred to as the epoch of the query. The continuous query is disseminated through the network in search of the sensor nodes that collect ...

Robust and Efficient Aggregate Query Processing in ...

2008-5-8 · Wireless sensor networks have been widely used in many environmental monitoring applications [].In most of these applications, aggregate queries, such as SUM, COUNT, AVERAGE (AVG), MIN and MAX, are often used as statistics collected from sensors [12, 13, 22].However, it is known that data collected from sensors are often noisy for various reasons, such as sensing device

Aggregate query processing in the presence of duplicates ...

Wireless sensor networks (WSNs) have received increasing attention in the past decade. In existing studies for query processing of WSNs, each sensor node measures environmental parameters such as ...

Processing Approximate Aggregate Queries in Wireless ...

2007-7-3 · Processing Approximate Aggregate Queries in Wireless Sensor Networks Antonios Deligiannakisa Yannis Kotidisb Nick Roussopoulosa aUniversity of Maryland bAT&T Labs-Research Abstract In-network data aggregation has been recently proposed as an effective means to reduce the number of messages exchanged in wireless sensor networks.

Aggregate query processing in the presence of duplicates ...

2015-3-10 · Wireless sensor networks (WSNs) have received increasing attention in the past decade. In existing studies for query processing of WSNs, each sensor node measures environmental parameters such as temperature, light and humidity around its location.

(PDF) Assembling regions for efficacious aggregate query ...

Wireless sensor networks generate a vast amount of data. This data, however, must be sparingly extracted to conserve energy, usually the most precious resource in battery-powered sensors.

Optimizing in-network aggregate queries in wireless

This study proposes a method of in-network aggregate query processing to reduce the number of messages incurred in a wireless sensor network. When aggregate queries are issued to

Optimizing in-network aggregate queries in wireless

This study proposes a method of in-network aggregate query processing to reduce the number of messages incurred in a wireless sensor network. When aggregate queries are issued to the resource-constrained wireless sensor network, it is important to efficiently perform these queries.

Data Aggregation in Wireless Sensor Network: A Survey

2013-11-12 · Wireless sensor networks (WSNs) consist of sensor nodes. These networks have huge application in habitat monitoring, disaster management, security and military, etc. Wireless sensor nodes are very small in size and have limited processing capability very low battery power. This restriction of low battery power makes the sensor network

TinyQP: A Query Processing System in Wireless Sensor

2013-6-14 · TinyQP provides the in-network processing of several complex queries including real time query, historical query, event detection, aggregate query, top-k query, etc. TinyQP displays the network topology in a graphical way. TinyQP allows the user to remotely execute query

Optimizing in-network aggregate queries in wireless

This study proposes a method of in-network aggregate query processing to reduce the number of messages incurred in a wireless sensor network. When aggregate queries are issued to the resource-constrained wireless sensor network, it is important to efficiently perform these queries.

Data Aggregation in Wireless Sensor Network: A Survey

2013-11-12 · Wireless sensor networks (WSNs) consist of sensor nodes. These networks have huge application in habitat monitoring, disaster management, security and military, etc. Wireless sensor nodes are very small in size and have limited processing capability very low battery power. This restriction of low battery power makes the sensor network

Aggregate Threshold Queries in Sensor Networks - IEEE ...

2007-3-30 · Abstract: An important class of queries over sensor networks are network-wide aggregation queries. In this work we study a class of aggregation queries which we refer to as aggregate threshold queries. The goal of an aggregate threshold query is to continuously monitor the network and give a notification every time an aggregated value crosses a predetermined threshold value.

Query Processing in Sensor Networks

2004-8-18 · Distributed in network query processor 3 TinyDB or Cougar Wireless sensor network Query input Result collection 2 Query parsing Query optimization 1 Query result storage and display Figure 1. Architecture of a sensor network query processor. Numbers indicate the sequence of steps involved in processing a query.

Processing Approximate Aggregate Queries in Wireless ...

2007-7-3 · Processing Approximate Aggregate Queries in Wireless Sensor Networks Antonios Deligiannakisa Yannis Kotidisb Nick Roussopoulosa aUniversity of Maryland bAT&T Labs-Research Abstract In-network data aggregation has been recently proposed as an effective means to reduce the number of messages exchanged in wireless sensor networks.

Continuous Quantile Query Processing in Wireless

2016-3-30 · Continuous Quantile Query Processing in Wireless Sensor Networks Johannes Niedermayer 1, Mario A. Nascimento 2, Matthias Renz 1, Peer Kröger 1 and Hans-Peter Kriegel 1 1 Institute for Computer Science, LMU, Munich, Germany 2 Dept. of Computing Science, University of Alberta, Canada {niedermayer, renz, kroeger, kriegel}@cip.i.lmu.de

Aggregate Location Monitoring for Wireless Sensor

Location monitoring systems are used to detect human activities and provide monitoring services, e.g., aggregate queries. In this paper, we consider an aggregate location monitoring system where wireless sensor nodes are counting sensors that are only capable of detecting the number of objects within their sensing areas. As traditional query processors rely on the knowledge of users' exact ...

Poster Abstract: Routing and Processing Multiple

2015-10-5 · We present a novel approach to processing continuous aggregate queries in sensor networks, which lifts the as-sumption of tree-based routing. Given a query workload and a special-purpose gateway node where results are ex-pected, the query optimizer exploits query correlations in order to generate an energy-efcient distributed evaluation plan.

Energy-Efficient Aggregate Query Evaluation in Wireless ...

2014-5-29 · nodes, so has been used as a paradigm in energy-constrained wireless sensor networks. To process an aggregate query, in-network aggregation consists of distribution and collection phases [13]. In the distribution phase, a tree rooted at the base station and spanning all the sensor nodes is constructed.

TinyCasper: A Privacy-Preserving Aggregate Location ...

2016-5-21 · niques designed for wireless sensor networks. On the other side, the aggregate query processing module is embedded in-side the server to support aggregate query processing over anonymized locations. TinyCasper system administrators can change the privacy requirement, i.e., k-anonymity re-quirement, at anytime. Finally, system users can issue snap-

Aggregate Threshold Queries in Sensor Networks - IEEE ...

2007-3-30 · Abstract: An important class of queries over sensor networks are network-wide aggregation queries. In this work we study a class of aggregation queries which we refer to as aggregate threshold queries. The goal of an aggregate threshold query is to continuously monitor the network and give a notification every time an aggregated value crosses a predetermined threshold value.

Poster Abstract: Routing and Processing Multiple

2015-10-5 · We present a novel approach to processing continuous aggregate queries in sensor networks, which lifts the as-sumption of tree-based routing. Given a query workload and a special-purpose gateway node where results are ex-pected, the query optimizer exploits query correlations in order to generate an energy-efcient distributed evaluation plan.

Data Aggregation in Wireless Sensor Network: A Survey

2013-11-12 · Wireless sensor networks (WSNs) consist of sensor nodes. These networks have huge application in habitat monitoring, disaster management, security and military, etc. Wireless sensor nodes are very small in size and have limited processing capability very low battery power. This restriction of low battery power makes the sensor network

Aggregate Location Monitoring for Wireless Sensor

Location monitoring systems are used to detect human activities and provide monitoring services, e.g., aggregate queries. In this paper, we consider an aggregate location monitoring system where wireless sensor nodes are counting sensors that are only capable of detecting the number of objects within their sensing areas. As traditional query processors rely on the knowledge of users' exact ...

Continuous Quantile Query Processing in Wireless

2016-3-30 · Continuous Quantile Query Processing in Wireless Sensor Networks Johannes Niedermayer 1, Mario A. Nascimento 2, Matthias Renz 1, Peer Kröger 1 and Hans-Peter Kriegel 1 1 Institute for Computer Science, LMU, Munich, Germany 2 Dept. of Computing Science, University of Alberta, Canada {niedermayer, renz, kroeger, kriegel}@cip.i.lmu.de

an aggregate query processing system for wireless network

An Aggregate Query Processing System For Wireless Network. An Aggregate Query Processing System For Wireless Network. CiteSeerX - Document Details Isaac Councill Lee Giles Pradeep Teregowda This demo presents a privacy-preserving aggregate location monitoring system namely TinyCasper in which we can monitor moving objects in wireless sensor networks while preserving their location privacy.

Interplay of processing and routing in aggregate query ...

2007-11-1 · Interplay of processing and routing in aggregate query optimization for sensor networks Niki Trigoni Alexandre Guitton Antonios Skordylis Computing Laboratory, University of Oxford, Oxford OX1 3QD, UK Abstract. This paper presents a novel approach to processing continuous aggre-gate queries in sensor networks, which lifts the assumption of tree ...

CAPS: Energy-Efficient Processing of Continuous

2019-12-4 · aggregate value computed at the sink at any instant should be accurate to within ±R. In other words, the applica-tion is assured that, if the value reported by the sink is V, the true value of the aggregate state (which would require each sensor to report each sample to the sink) lies within [V −R,V +R]. The sensor network itself is modeled as

International Journal of Distributed Energy-efficient and ...

2021-7-8 · Wireless sensor network, query processing, privacy protection, spatial range aggregation query Date received: 29 January 2019; accepted: 27 May 2019 Handling Editor: Weizhi Meng Introduction A wireless sensor network (WSN) is a multihop self-organizing network composed of multiple sensor nodes. An important feature of a WSN is data-centricity, and

Sensor Networks, Wireless Sensor Network Management

Wireless Sensor Network Management. Connection of sensors, hubs and gateways using standard or custom communication protocol drivers. Alerting, charting, reporting, trend prediction and other data analysis tools. Transport network independence. Customizable network geography and topology visualization. Data aggregation and fusion.