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aggregate query processing in wireless sensor network

TinyQP: A Query Processing System in Wireless Sensor Networks

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 commands and browse query result.

CiteSeerX — In-network Query for Wireless Sensor Networks

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Recently, in-network aggregate query processing techniques have problems such as high energy consumption in sensor nodes, low accuracy of query processing results, and long query processing time. In order to solve these problems and to enhance the efficiency of aggregate …

(PDF) Query Processing in Wireless Sensor Network ...

As the aggregation of sensed data is more useful for user analyses than individual sensor readings, it has been proposed to integrate the sensor network and the use of (Distributed Query Processing Engine) DQPE to improve the management of data processed from sensor networks. Distributed query processing in wireless sensor networks provides ...

Query Processing for Sensor Networks

we introduce our model of a sensor network, sensor data, and the class of queries that we consider in this paper. We then demonstrate our algorithms to process simple aggregate queries with in-network aggregation (Section 3), and investigate the interaction between the routing layer and the query layer (Section 4). We

Supporting Aggregate Queries Over Ad-Hoc Wireless …

Supporting Aggregate Queries Over Ad-Hoc Wireless Sensor Networks Madden UC Berkeley With Robert Szewczyk, Michael Franklin, and David Culler WMCSA June 21, 2002 Motivation: Sensor Nets and In-Network Query Processing Many Sensor Network Applications are Data Oriented Queries Natural and Efficient Data Processing Mechanism Easy (unlike ...

Optimizing in-network aggregate queries in wireless sensor ...

Previous studies propose in-network aggregate query processing, in which sensor nodes use aggregate operators to reduce the number of messages, thereby conserving energy . When multiple aggregate queries are submitted to wireless sensor networks, it is possible to generate the intermediate results of these queries.

An Efficient Data Aggregation and Query Optimization for ...

discussed and query processing in sensor networks are presented. A. Data Aggregation Data aggregations are used to reduce unnecessary data communication and further to increase the duration of wireless sensor networks with energy constrains. Data aggregations are used to reduce the amount of data

Histogram and Other Aggregate Queries in Wireless Sensor ...

Histogram and Other Aggregate Queries in Wireless Sensor Networks. cs.ualberta.ca. Khaled Ammar. Download Download PDF. Full PDF Package Download Full PDF Package. This Paper. ... Toward adaptive query processing in wireless sensor networks. By Ronaldo Menezes. An efficient data acquisition model for urban sensor networks. By Carmem Hara. …

Optimizing in-network aggregate queries in wireless sensor ...

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.

Impact of Data Aggregation in Wireless Sensor Networks

sources communicate to a particular sink. In-network fil-tering and processing techniques can help conserve the scarce energy resources. Data aggregation has been put forward as an essen-tial paradigm for wireless routing in sensor networks [9], [13]. The idea is to combine the data coming from differ-

An adaptive in-network aggregation operator for query ...

Adaptive query operators (algorithms) can adjust their behavior in response to specific events that take place during data processing. In this paper, we propose an adaptive in- network aggregation operator for query processing in sensor nodes of a WSN, called ADAGA (ADaptive AGgregation Algorithm for sensor networks).

Data Aggregation in Wireless Sensor Network: A Survey

Data Aggregation in Wireless Sensor Network: A Survey 169 3.1.1 Diffusion: Directed diffusion (DD) [2] may be a popular information aggregation paradigm for wireless device networks. it's a data-centric and application aware paradigm, within the sense that every one information generated by sensor nodes is called by attribute-value pairs.

Data Aggregation and Query Processing in WSN

Data Aggregation and Query Processing in WSN Ayoni Mukherjee, Sanjit Setua Abstract - A wireless sensor network (WSN) has a wide range of important applications such as remote environment monitoring, target tracking etc. This has been enabled by the availability of sensors that are smaller, cheaper and intelligent.

TinyCasper: A Privacy-Preserving Aggregate Location ...

aggregate query processing over anonymized locations.Inthe first module, trustedwireless sensor nodescollaborate with each other to anonymize users' exact locations by a cloaked spatial region that satisfies a prespecified privacy require- …

In-Network Aggregation in Wireless Sensor Networks 1 ...

optimizations of queries injected into the network. 1.2. In-Network Aggregation A query requesting aggregate data is injected into the sensor network at a host node, also known as a sink. The query is forwarded by the host to the other nodes in the network. The simplest and least optimal query plan would require each node to report its own

Assembling Regions for Efficacious Aggregate Query ...

Assembling Regions for Efficacious Aggregate Query Processing in Wireless Sensor Networks by Apostolos Fertis Diploma, Electrical and Computer Engineering (2003) National Technical University of Athens Submitted to the Department of Electrical Engineering and Computer Science in partial fulfillment of the requirements of

A Sensor Network Data Aggregation Technique - IJCTE

implement our distributed in-network aggregation approach. III. THE EEIA APPROACH Our approach consists of providing a new distributed algorithm for query processing in wireless sensor networks which is an optimized energy efficient distributed algorithm with respect to all the sensor's resource constraints. Some

Robust and Efficient Aggregate Query Processing in ...

10%Wireless sensor networks have been widely used in many applications, such as soil temperature monitoring for plant growth and abnormal event detection of industrial parameters. Among these applications, aggregate queries, such as SUM, COUNT, AVERAGE, MIN and MAX are often used to collect statistical data.

Processing approximate aggregate queries in wireless ...

In this paper, we focus on designing efficient query of topk data produced by sensor nodes in a wireless sensor network (WSN). Although efficient top-k query has been extensively studied in the database community, surprisingly, little was known about the efficient top-k query in WSNs.

61005.pdf - Research Article ... - Course Hero

Keywords 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.

Processing approximate aggregate queries in wireless ...

In-network data aggregation has been recently proposed as an effective means to reduce the number of messages exchanged in wireless sensor networks. Nodes of the network form an aggregation tree, in which parent nodes aggregate the values received from their children and propagate the result to their own parents.

Query Processing in Sensor Networks

Queries Data 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.

Aggregate Location Monitoring for Wireless Sensor …

components, wireless sensor network and aggregate query processor. A third major component that is not shown in the figure is a resource-efficient sensor scheduler that is responsible on tuning a trade-off between energy and bandwidth consumption of the wireless sensor network and the accuracy of the answers provided by the aggregate query ...

An adaptive in-network aggregation operator for query ...

Adaptive query operators (algorithms) can adjust their behavior in response to specific events that take place during data processing. In this paper, we propose an adaptive in-network aggregation operator for query processing in sensor nodes of a WSN, called ADAGA (ADaptive AGgregation Algorithm for sensor networks).

aggregate quarry processing sensor networks

aggregate query processing meaning aggregate query processing definition, optimizing aggregate queries in cache request: regionbased query processing in sensor networks. the processing of grouped aggregate queries. however, since a region in our approach is defined as a .. inside a circle having a diameter d by definition 1.

aggregate query processing in sensor networks

Users of wireless sensor networks (WSNs) often submit spatial window aggregation queries to obtain the summary information about a local area in the.... Robust and efficient aggregate query processing in wireless sensor, - Know More 1 Apr 2008, Wireless sensor networks have been widely used in many applications, such as soil temperature ...

Processing multiple aggregation queries in geo-sensor ...

Density queries are of practical importance in many mobility related applications including traffic monitoring. Previous work has so far assumed a client/server architecture to solve such queries. Whereas in this paper, carefully constructed sensor networks, which consist of both lightweight location sensors and more powerful processing nodes ...

International Journal of Distributed Energy-efficient and ...

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

Energy-Efficient Aggregate Query Evaluation in Sensor Networks

This paper considers the aggregate query evaluation in a sensor network database with the objective to prolong the network lifetime. We first propose an algorithm by introducing a node capability concept that balances the residual energy and the energy consumption at each node so that the network lifetime is prolonged.