This study proposed BPA, a bucket-based parallel aggregate query processing technique for more efficient aggregate query processing in wireless sensor networks. In order …
Aggregate queries are one of the most important queries in sensor networks. Especially, group-by aggregate queries can be used in various sensor …
Wireless sensor networks have been widely used in many applications, such as soil temperature monitoring for plant growth and abnormal event detection of …
After wireless sensor network is deployed, users often submit spatial window aggregation queries to obtain statistical information of the regions of interest, such as maximum temperature, average humidity etc. Existing spatial window aggregation query processing algorithms are based on the assumption that the communication links are …
As has been noted in the sensor network literature, aggregation is important as a data-reduction tool; networking approaches, however, have focused on application specific solutions, whereas our in-networkaggregation approach is driven by a general purpose, SQL-style interface that can execute queries over any type of sensor …
Armed with this data, it is then feasible to proceed with the process of flow concept design, and the following are general points to be borne in mind for building an effective crushing and screening plant. …
Sensor networks are distributed event-based systems that differ from traditional communication networks in several ways: sensor networks have severe energy constraints, redundant low-rate data, and many-to-one flows. Data-centric mechanisms that perform in-network aggregation of data are needed in this setting for energy-efficient …
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 ...
In this paper we present a Grid-based architecture that supports aggregate query answering on sensor network data, and uses a summarization technique to efficiently …
In-network aggregation has been proposed as one method for reducing energy consumption in sensor networks. In this paper, we explore two ideas related to further reducing energy consumption in the context of in-network aggregation. The first is by influencing the construction of the routing trees for sensor networks with the goal of …
Themajority ofthese efforts focuses onanswering aggregate queries, whichareofgreat importance tosurveillance applications (1), (2)andonenabling in-network processing bycombining individual sensor ...
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In what follows, we classify and explain the secure data aggregation protocols based on the requirement of decrypting sensor data at data aggregators. 4.1. Secure data aggregation using plain sensor data. Earlier work on secure data aggregation is focused on symmetric key cryptography and aggregation of plain data.
Aggregate Query Processing in Ad-Hoc Sensor Networks. Yong Yao Database lunch, Apr. 15th. Outline. Motivating Example Sensor and Sensor Network Query Model In-Network Aggregates Routing and Aggregation Summary. Motivating Example. Slideshow 1782187 by emmet
They emphasized that processing sensor data inside the network (in-network) before any further processing helps save limited resources and prevent excessive data duplication. ... It implies that IoT should have the ability to ingest, aggregate, and compress real-time data from sensor devices at the edge. In this …
This work proposes a PCM-based data transmission scheme to "make up" the possibly lost data, and designs an intelligent path selection algorithm for this scheme that outperforms its counterparts under various sensor network conditions. Wireless sensor networks have been widely used in many applications, such as soil temperature …
Affording secure and efficient big data aggregation methods is very attractive in the field of wireless sensor networks (WSNs) research. In real settings, the WSNs have been broadly applied, such as target tracking and environment remote monitoring. However, data can be easily compromised by a vast of attacks, such as data interception and data …
Another method at the data manage- ment level is in-network query processing (or aggregation). 1 Introduction With in-network aggregation, a part of the computational work of the aggregation is performed within the sensor node before Advances in microelectronics have brought upon a new class it sends the results out to the network.
Aggregate query processing in the presence of duplicates in wireless sensor networks. Author links open overlay panel Jun-Ki Min a, Raymond T. Ng b, Jun-Ki Min a, Raymond T. Ng b,
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
Interplay of Processing and Routing in Aggregate Query Optimization for Sensor Networks
Robust and Efficient Aggregate Query Processing in May 08, 2008 Wireless sensor networks have been widely used in many applications, such as soil temperature
Abstract. Wireless sensor networks have been widely used in many applications, such as soil temperature monitoring for plant growth and abnormal event …
Aggregate query processing in sensor networks has received a lot of attention recently [28, 30, 37]. The common approach to answering aggregate range queries.
In this paper, we propose a certificate-based aggregate signature scheme in WSN. In the random oracle model and under the computational Diffie-Hellman (CDH) Problem and bilinear Diffie-Hellman ...
Introduction. Densely distributed sensor networks are used in a variety of monitoring applications ranging from measurements of meteorological data (like …
A Location Based Aggregation Algorithm for Selective Aggregate Queries in Sensor Networks Muhammad Umer Lars Kulik Egemen Tanin National ICT Australia Department of Computer Science and Software Engineering University of Melbourne, Victoria 3010, Australia {mumer,lars,egemen}@csse.unimelb.edu.au ABSTRACT consumption by …
Previous approaches for computing duplicate-sensitive aggregates in wireless sensor networks have used a tree topology, in order to conserve energy and to avoid double-counting sensor readings.
The techniques included for in-network processing are sensor fusion, sensor compression, sensor filtering, and sensor elimination . 5.1 Sensor Fusion Sensor fusion is a widespread technique which specific the aggregation of data as a partial action and its priority of information in place of data with the use of the approach such as signal ...
This paper presents a novel approach to processing continuous aggregate queries in sensor networks, which lifts the assumption of tree-based routing.
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In this paper we present a Grid-based architecture that supports aggregate query answering on sensor network data, and uses a summarization technique to efficiently accomplish this task. In particular, grid nodes are used either to collect, compress and store sensor readings, and to extract information from stored data.
Sensor networks answer queries by finding the nodes which collect the relevant information and by combining their observations. This requires that data has to be …