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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There are various sensor network query processors (SNQPs) (implementing in-network declarative query processing) that provide data reduction, aggregation, logging, and auditing facilities. These SNQPs view the wireless sensor network as a distributed database over which declarative query processor can be used to program a WSN …
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This study proposed BPA, a bucket-based parallel aggregate query processing technique for more efficient aggregate query processing in wireless sensor networks. In order to reduce the …
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In wireless sensor networks (WSNs), users often submit spatial range queries to obtain statistical information of an area in the network, such as the average temperature and the maximum humidity of an area. The existing privacy-preserving aggregation query algorithms depend on pre-established network topology, and maintaining network …
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Here a gateway receives the binary digital signals from all the sensors and using RF transfers them through the Zigbee wireless network. This entire system is powered by the power module. Smart aggregate systems require wireless networks with high data transfer rates and low power for long-term SHM to cope up with high …
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In-network adaptive query optimization for Wireless Sensor Networks (WSNs) database considered as a distributed database has been a wide research field. Due to.
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investigate issues related to the data collection and query optimization in a wireless sensor network. In the TAG [12, 13], sensors are organized in a spanning tree rooted at the sink. TAG proposes an in-network aggregation [12] technique which allows nodes to combine its own value with data received from all children and then
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Wireless sensor network (WSN) is developed as a network of sensors, which engage in sensing and transmitting the data to the sink node. The constraints, such as energy, memory, and bandwidth insist the researchers to develop an efficient method for data transmission in WSN. Accordingly, this paper introduces a data aggregation …
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The top–k query is an important type of query for the wireless sensor network. In this paper, we present an iterative algorithm to process the top–k query, which is a distributed algorithm combining the in–network aggregation and the trace back techniques. By using the in–network aggregation technique, the iterative algorithm …
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Key words- Location privacy, wireless sensor networks, location monitoring system, aggregate query processing, spatial histogram 1 INTRODUCTION The advance in wireless sensor technologies has resulted in many new applications for military and/or civilian purposes. Many cases of these applications rely on the information of personal …
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Let us assume that Q zw is invoked at timestamp 1. Then, Q zw returns the number of zebras with high body temperatures on average for the time interval [1], [2] at timestamp 2 and that for the time interval [2], [3] at timestamp 3. To optimize processing of time-based sliding window aggregate queries, we develop the LCA-SW (LCA with …
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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 ...
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DOI: 10.1016/jpenvurbsys.2009.01.006 Corpus ID: 19829817; Optimizing query processing using selectivity-awareness in Wireless Sensor Networks @article{Umer2009OptimizingQP, title={Optimizing query processing using selectivity-awareness in Wireless Sensor Networks}, author={Muhammad Fahad Umer and Lars …
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We propose an adaptive spatial window aggregation query processing algorithm called ASWAP in this paper. ... Proceedings of the 29th IEEE International Conference on Distributed Computing Systems, IEEE, pp ... Fasolo, E., Rossi, M., Widmer, J. and Zorzi, M. (2007) 'In-network aggregation techniques for wireless sensor …
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The existing spatial range aggregation query algorithms Tiny AGgregation (TAG), 7 R tree, 8 and STWinFlood 9 rely on preconfigured network topologies such as the tree rooted at the base station. But they do not take privacy protection into account. In addition, due to factors such as the environment and node failure, the network topology …
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Request PDF | Robust and Efficient Aggregate Query Processing in Wireless Sensor Networks | Wireless sensor networks have been widely used in many applications, such as soil temperature monitoring ...
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In this paper, we propose an adaptive in-network aggregation operator for query processing in sensor nodes of a WSN, called ADAGA (ADaptive AGgregation …
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acquisitional query processing system f or sens or networks. ACM Trans actions on . ... aggregation for Wireless Sensor Network. Computers & Electrical Engineering, 41, 256-264.
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There are various sensor network query processors (SNQPs) (implementing in-network declarative query processing) that provide data reduction, aggregation, logging, and auditing facilities.
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We present a privacy data aggregation protocol called Queries Privacy Protection for Data Aggregation (QPPDA) which involves three phases: the grid …
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following that without proper set of protocols and various other systems the query processing cannot be used in the wireless system networks. 3. Conclusions This deliverable presents the state of the art in query optimization and processing over data produced by sensor networks, considering current networking and architectural
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The encryption method assigns different keys to the concealed data acquired from different nodes, and BS can correctly distinguish them in the aggregation process . Assume that k types of query are supported by a network. Therefore, k public and private key pairs are required. We take the following steps to generate the key pairs.
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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. Due to the low …
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In Deligiannakis et al. (2006), Hyun et al. (2006), Tang and Xu (2006), the authors have examined approximate aggregation query processing, an approach to …
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Robust and efficient aggregate query processing in wireless sensor networks ... Stankovic JA, Abdelzaher T, Luo L, Stoleru R, Yan T, Gu L, Hui J, Krogh B (2004) Energy-efficient surveillance system using wireless sensor networks. ... Gehrke J (2002) The cougar approach to in-network query processing in sensor networks. …
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The main goal of in-network processing is to increase the longevity of a network by minimizing the resource utilization in the sensor nodes. ... BS broadcasts the query to the system. 2. Initialization ... Maivizhi, R., Yogesh, P. (2018). Efficient and Robust Secure In-Network Aggregation in Wireless Sensor Networks. In: …
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A sensor network consists of the random deployment of large numbers of tiny sized sensor nodes in a region of interest to detect the physical/environmental events and transmit the relevant data to ...
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DBStream: an Online Aggregation, Filtering and Processing System for Network Traffic Monitoring Arian Bär, Pedro Casas Lukasz Golab Alessandro Finamore FTW - Telecommunications Research Center Vienna {baer, casas}@ftw.at University of Waterloo [email protected] Politecnico di Torino fi[email protected] Abstract—Network …
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In-network data aggregation has been recently proposed as an effective means to reduce the number of messages exchanged in wireless sensor networks. ... The Cougar approach to in-network query processing in sensor networks, SIGMOD Rec. 31 (3) (2002) 9-18.]] ... This paper investigates strategies for prolonging the system lifetime for wireless ...
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B. Query processing and optimization In WSN efficient communication is achieved using data aggregation and [16] query processing. Query processing and optimization are essential method for the DBMS and are used for timeframe method. Query processing refers to data extraction from the database. The updating of data and
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Query Processing in Wireless Sensor Networks. Data Aggregation in Wireless Sensor Networks. Summary and Future Directions. References
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In wireless sensor networks, users often submit spatial window aggregation queries to obtain the summary information about a local area in the monitored region, for example, "retrieving the ...
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We propose an efficient in-network aggregate algorithm when an object is detected multiply by several sensor nodes.We extend our algorithm to support sliding window aggregate queries ... J.M. Hellerstein, W. Hong, Tinydb: an acquisitional query processing system for sensor networks, ACM TODS 30 (1) (2005) 122-173. ... A wireless sensor …
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Data aggregation processes are essential constituents for data management in modern computer systems, such as decision support systems and Internet of Things systems, many with timing constraints. Understanding the common and variable features of data aggregation processes, especially their implications to the time-related …
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In [41], the authors realize the fact that existing privacy homomorphism based in-network processing protocols can only work for some specific query-based aggregation functions, e.g., sum, average, etc. Hence, instead of privacy homomorphism, the authors take advantage of digital watermarking and propose an end-to-end, …
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The issue is with the query processing, specifically with regards to determining which data from the network are required, as well as the collecting frequency of the data. ... Fuzzy logic-based two-level clustering for data aggregation in WSN. 2020 17th International Multi-Conference on Systems, Signals & Devices (SSD), Monastir, …
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Request PDF | On Sep 1, 2018, Xiaocui Li and others published Multi-Attribute Query Processing Through In-Network Aggregation in Edge Computing | Find, read and cite all the research you need on ...
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Most existing query processing algorithms for wireless sensor networks (WSNs) can only deal with discrete values. However, since the monitored environment always changes continuously with time, discrete values cannot describe the environment accurately and, hence, may not satisfy a variety of query requirements, such as the …
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Summary This chapter contains sections titled: Introduction Query Processing in Wireless Sensor Networks Data Aggregation in Wireless Sensor Networks Summary and Future …
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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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