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aggregate query processing in wireless sensor network

Aggregate query processing in the presence of duplicates

Mar 10, 2015· A wireless sensor network (WSN) consists of spatially distributed autonomous devices with various sensors, and a powered base station which serves as an access point for users to pose ad hoc queries. Wireless sensor networks have a broad range of applications, such as environment and habitat monitoring [30] that collects meteorological data (e

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(PDF) Aggregate Queries in Wireless Sensor Networks

Recently as efficient processing of aggregate queries for fetching desired data from sensors has been recognized as a crucial part, in-network aggregate query processing techniques are studied

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Processing approximate aggregate queries in wireless

Dec 01, 2006· 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.

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Aggregate query processing in the presence of duplicates

Mar 10, 2015· A wireless sensor network (WSN) consists of spatially distributed autonomous devices with various sensors, and a powered base station which serves as an access point for users to pose ad hoc queries. Wireless sensor networks have a broad range of applications, such as environment and habitat monitoring that collects meteorological data (e.g

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Processing Approximate Aggregate Queries in Wireless

routing [4, 26] and in-network query processing [14, 15, 16, 28]. A survey of the applications and the challenges that sensor networks introduce is presented in [10]. For monitoring queries that aggregate the observed values from a group of sensor nodes, [14] suggested the construction of a greedy aggregation tree that seeks to maximize the

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Processing Approximate Aggregate Queries in Wireless

CiteSeerX Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): In-network data aggregation has been recently proposed as an e#ective 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

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Aggregate Threshold Queries in Sensor Networks IEEE

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.

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Query Processing in Wireless Sensor Network

query processing, a run time database is maintained about a specific type of query, i.e. how the nodes in a WSN will respond to a particular query. 2. Approach Towards Query Processing Much research on query processing for Wireless Sensor Networks has done in the past few years and two major. Prototype sensor network query processors have been

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(PDF) Complex query processing in wireless sensor networks

Complex query processing in wireless sensor networks. January 2007; In-network processing, however, has been limited to systems where at most, simple aggregate queries are evaluated, the

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Optimized Query Processing for Wireless Sensor Networks

Optimized Query Processing for Wireless Sensor Networks d a 1. I NTR ODUCI Recently sensor networks are used in various domains of computer applications. Infinite property and scalability of them give chance to getting around information in the highest resolution that impossible in previous technologies. They are used from military search to

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Robust and Efficient Aggregate Query Processing in

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.

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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.

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Processing Approximate Aggregate Queries in Wireless

routing [4, 26] and in-network query processing [14, 15, 16, 28]. A survey of the applications and the challenges that sensor networks introduce is presented in [10]. For monitoring queries that aggregate the observed values from a group of sensor nodes, [14] suggested the construction of a greedy aggregation tree that seeks to maximize the

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an aggregate query processing system for wireless network

Processing approximate aggregate queries in wireless . Processing approximate aggregate queries in wireless sensor networks Innetwork 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

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Query Processing in Wireless Sensor Network

query processing, a run time database is maintained about a specific type of query, i.e. how the nodes in a WSN will respond to a particular query. 2. Approach Towards Query Processing Much research on query processing for Wireless Sensor Networks has done in the past few years and two major. Prototype sensor network query processors have been

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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

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(PDF) Complex query processing in wireless sensor networks

Complex query processing in wireless sensor networks. January 2007; In-network processing, however, has been limited to systems where at most, simple aggregate queries are evaluated, the

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STP: In-network aggregation through proximity queries in a

In order to solve these problems and to enhance the efficiency of aggregate query processing in wireless sensor networks, this paper proposes Bucket-based Parallel Aggregation (BPA).

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Optimized Query Processing for Wireless Sensor Networks

Optimized Query Processing for Wireless Sensor Networks d a 1. I NTR ODUCI Recently sensor networks are used in various domains of computer applications. Infinite property and scalability of them give chance to getting around information in the highest resolution that impossible in previous technologies. They are used from military search to

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Toward adaptive query processing in wireless sensor networks

A wireless sensor network (WSN) consists of groups of spatially distributed networked sensors used to cooperatively monitor physical environmental conditions. These sensors are usually strongly res...

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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

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Integrated Routing and Query Processing in Wireless Sensor

The data query processing systems such as TinyDB and Cougar are promising for data acquisitional application s of wireless sensor networks. With these systems, a user injects SQL ­style queries into the network through a PC. The networked sensor nodes then work

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Sensor Scheduling for Aggregate Monitoring in Wireless

sor networks while allowing in-network aggregation, which can be either numerical aggregation or message merging. We term this type of application as aggregate monitoring. In-network aggregation is desired for two reasons. First, it enables simple but efficient distributed processing of ag-gregate queries such as summation and nearest neighbors.

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KNN Query Processing in Wireless Sensor and Robot

Network, we first review the KNN query processing problem in Wireless Sensor Network. As previously stated, one of the most essential problems in WSNs is KNN (k Nearest Neighbours) query processing which aims at searching for k nearest neighbours of the query point and sorting them by their Euclidean distance. Theoretically, KNN query

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