Dynamic Routing Layer for Data Query in Wireless Sensor ... The performance of data query processing in wireless sensor networks is greatly affected by routing protocol. Currently available data query systems usually use one routing protocol to deal with all kinds of queries. VP2RQ: Efficient verifiable privacy-preserving range query ... In the field of wireless sensor networks, the secure range query technique is a challenging issue. In two-tiered wireless sensor networks, a verifiable privacy-preserving range query processing method is proposed that is based on bucket partition, information identity authentication, and check-code fusion. LNCS 6588 - REQUEST: Region-Based Query Processing in ... because, in the sensor network applications, we are not interested in a node itself, but a region in which the node is located. Considering the above grouping method, we propose the region-based query processing method in sensor networks (hereafter called "REQUEST"). In RE-QUEST, the primitive processing unit is a region instead of a node.    Read More

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  • An Energy-Efficient Query Processing Algorithm for ...

    sensor networks. When issuing a query, user may specify a value/time accuracy ... An Energy-Efficient Query Processing Algorithm 377 3 Time-Based Optimization Algorithms In this section, we consider query optimization based on time-accuracy constraint set by applications. One example of such query is shown below.

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  • EnviroMeter: A Platform for Querying Community-Sensed Data

    of query processing in the following ways: (a) due to semi-controlled or uncontrolled mobility of sensors, sensor values may not be always available at a particular position and time, (b) the accuracy of an estimated pollution value is not high if a distant sensor value is used to approximate the pollution value at the current position.

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  • The ACQUIRE mechanism for efficient querying in sensor .

    taining information in sensor networks which we refer to as AC-QUIRE. In ACQUIRE an active query is forwarded through the network, and intermediate nodes use cached local information (within a look-ahead ofd hops) in order to partially resolve the query. When the query is fully resolved, a completed response is sent directly back to the ...

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  • Query processing in sensor networks - ieeexplore.ieee

    Query processing in sensor networks Abstract: Smart sensors are small wireless computing devices that sense information such as light and humidity at extremely high resolutions. A smart sensor query-processing architecture using database technology can facilitate deployment of sensor networks.

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  • Chapter 5 Software and Middleware Services - rd.springer

    semination in the network. Data queries allow accessing gathered data. Resource management allows management of node peripherals and/or computational and/or energy resources. Service discovery service allows dynamic detection of resources and services. Storage services allow storing data into the sensor network.

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  • Energy-efficient query processing based on partial ...

    One of main issues in this environment is to improve energy-efficiency in sensor nodes. In this paper, we devise a new attribute-query processing algorithm. Each sensor has to maintain partial information locally about attributes values gathered at its all descendent nodes. As the volume is higher, however, the maintenance cost also increases.

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  • Open Research: Energy-Efficient Top-k Query Processing in ...

    The large volume of data generated by sensors needs to be processed to respond to the users queries. However, efficient processing of queries in sensor networks poses great challenges due to the unique characteristics imposed on sensor networks including slow processing capability, limited storage, and energy-limited batteries, etc.

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  • Efficient multi-attribute query processing in ...

    These devices are composed as wireless sensor networks (WSN) for supporting real-world applications. Typically, multiple attributes are being sensed simultaneously for enabling the event detection. In this setting, query processing is a challenge especially when multiple attributes are necessary to be sensed in a certain region interested.

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  • SenQ: An Embedded Query System for Streaming Data in ...

    Query Management Sensor Sampling SenQL Declarative Query Language 3. and Data Storage 4. Queries Query Processing and Network Messaging Sensor Data 1. and Processing 2. (b) SenQ query sys-tem stack. In ad hoc mode the upper two layers are optional. 2 4 3 User Micro− Embed. Interface UIserver Sensors 1 2 4 1 3 (c) Loosely coupled layers ...

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  • An efficient top-k query processing framework in mobile ...

    Section 2 reviews the related work on top-k query processing in sensor networks. In Section 3, we present mSensor, our top-k query processing framework in mobile sensor networks. The experimental results are shown in Section 4. Finally, in Section 5, .

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  • Open Problems in Data Collection Networks

    the sensor network according to some constraints (e.g., ef-ficiency, access control rights, etc). Placement of in-network services is a multi-step pro-cess. First, an application demand is translated into a se-ries of operators. In-network operators receive inputs from live sensor data from one or more networks, from stored

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  • Data Aggregation Techniques in Sensor Networks

    Robust Aggregation in Sensor Networks. ACM SenSys 2004. Pg 1-5, Pg 7 (2) Samuel Madden, Michael J. Franklin, Joseph Hellerstein, and Wei Hong. TAG: a Tiny Aggregation Service for Ad-Hoc Sensor Networks. submitted for review, May 2002. Pg 1-8 (3) Y. Yao, J. Gehrke, Query Processing for Sensor Networks, Proceedings of the 2003 CIDR Conference, 2003.

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  • Two-Tier Multiple Query Optimization for Sensor Networks

    identifier of the query. The attribute list field contains the list of attributes that a data acquisition query qid re- trieves from the wireless sensor network. agg listis a list of operator,attribute that an aggregation query qidac- quires. Wenotethatforasinglequery,eitherattribute list or agg list will be empty. predicate list is a list of attribute,min,max.Theqid field is used by our al-

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  • MSGR: A Mode-Switched Grid-Based Sustainable Routing ...

    as the source of data. Therefore, energy-ef˝cient data routing in WSN is still a challenging task for real-time applications. Hierarchical grid-based routing is an energy-ef˝cient method for routing of data packets. This method divides the sensing area into grids and is advantageous in wireless sensor networks to enhance network lifetime.

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  • Energy-efficient data organization and query processing in ...

    Energy-efficient data organization and query processing in sensor networks Recent sensor networks research has produced a class of data storage and query processing techniques called Data-Centric Storage that leverages locality-preserving distributed indexes to efficiently answer multi-dimensional range and range-aggregate querie

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  • VP2RQ: Efficient verifiable privacy-preserving range query ...

    In the field of wireless sensor networks, the secure range query technique is a challenging issue. In two-tiered wireless sensor networks, a verifiable privacy-preserving range query processing method is proposed that is based on bucket partition, information identity authentication, and check-code fusion.

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  • Active Rules for Sensor Databases - Home - Department of ...

    ing interest in query processing in sensor and actuator networks. This is mainly due to the increased awareness of query processing as the most appropriate computational paradigm for a wide range of sensor network applications, such as environmental monitoring. In this pa-per we propose a second database technology, namely active rules, that ...

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  • Processing Publish/Subscribe Queries over Distributed Data ...

    a particular spatial region. Queries in this context are so-called continuous queries, or subscriptions, and return re-sults to the subscriber whenever a particular condition (event) is satis ed. The main di culty is to place subscriptions ef- ciently inside the network, such that sensor readings (sev-

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  • LNCS 6588 - REQUEST: Region-Based Query Processing in ...

    because, in the sensor network applications, we are not interested in a node itself, but a region in which the node is located. Considering the above grouping method, we propose the region-based query processing method in sensor networks (hereafter called "REQUEST"). In RE-QUEST, the primitive processing unit is a region instead of a node.

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  • Online Outlier Detection in Sensor Data Using Non ...

    with very large sensor networks, we have to take into account the issue of scalability of the query processing technique with respect to the size of the network. To that e ect, we adopt a hierarchical organization for the sensor network, similar to the one used in [46]. The idea is to organize the network us-ing overlapping virtual grids.

    Adaptive Holistic Scheduling for Query Processing in ...

    protocols for sensor query processing is that they ignore the need for the timing coordination of query evaluation and communication in sensor query processing. This often causes the transmission to start earlier before the query results are ready on some nodes. In .

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  • Resilient Cluster Formation for Sensor Networks

    Sensor nodes are often organized into clusters for effi-cient and scalable in-network processing (e.g, data aggrega-tion) [16], routing [20], data query [12], and broadcast [25]. Many protocols have been developed for efficient cluster-ing [2,3,5,6,8,20,23,32]. However, they can only work in benignenvironments. In hostile environments,an ...

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  • Efficient and Reliable In-Network Query... | ERA

    Efficient and Reliable In-Network Query Processing in Wireless Sensor Networks. Author / Creator Malhotra, Baljeet Singh; The Wireless Sensor Networks (WSNs) have emerged as a new paradigm for collecting and processing data from physical environments, such as wild life sanctuaries, large warehouses, and battlefields.

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  • Energy-Efficient In-Network Density Query Processing in ...

    A density query finds out an area spread by density that a target object requires in the whole sensing field. Reference [] was proposed for processing a density query efficiently in WSNs.The existing density query processing scheme is based on heterogeneous sensor nodes that consist of regular nodes and processing nodes.

    IJA: An Efficient Algorithm for Query Processing in Sensor ...

    Sensors 2011, 11 1685 Figure 1. Cont. (c) One of general join problems is a heavy communication cost to be transferred into among nodes and a lower join selectivity of query regarding overhead in .

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  • Energy-Efficient In-Network Density Query Processing in ...

    Query Processing in Wireless Sensor Networks Dong-ook Seong, Junho Park, Jihee Lee, Myungho Yeo, Myoungho Kim and Jaesoo Yoo Abstract In recent, many studies on applications that monitor the information of mobile objects in wireless sensor network have been done. A density query is one of query types for object monitoring applications.

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  • Human in the Loop: Distributed Data Streams for Immersive ...

    enable next generation cyber-physical sensor networks. Human in the Loop A sensor network typically performs background data col-lection to support automatic control and expert users' needs. Periodic reports may be hierarchically aggregated and stored in the back-end, with control logic sending actuation direc-tives as needed.

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  • Energy-efficient data organization and query processing in ...

    Recent sensor networks research has produced a class of data storage and query processing techniques called Data-Centric Storage that leverages locality-preserving distributed indexes like DIM, DIFS, and GHT to efficiently answer multi-dimensional range and range-aggregate queries.

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  • IJA: An Efficient Algorithm for Query Processing in Sensor ...

    In query processing of sensor networks, the join operation costs much in sensor networks for correlating sensor readings like distributed database environments [8]. Therefore, many researchers have studied reducing the cost in sensor environment [1]. In a sensor network environment, a query is issued for retrieving and gathering the real time state

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  • Dynamic Routing Layer for Data Query in Wireless Sensor ...

    The performance of data query processing in wireless sensor networks is greatly affected by routing protocol. Currently available data query systems usually use one routing protocol to deal with all kinds of queries.

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  • Dynamic Hierarchical Communication Paradigm for Wireless ...

    A Wireless Sensor Network (WSN) consists of a large number of randomly deployed sensor nodes. These sensor nodes organize themselves into a cooperative network and perform the three basic functions of sens-ing, computations and communications.

    Optimizing Energy-Efficient Query Processing in Wireless ...

    This paper studies the issues of energy-efficient query optimization for wireless sensor networks. Different from existing query optimization techniques that consider only query plans for extracting data from sensors at individual nodes, our approach takes into account both of the sensing and communication cost in query plans.

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  • Efficient cross-correlation via sparse representation in ...

    Ef cient Cross-Correlation Via Sparse Representation In Sensor Networks Prasant Misra1,2, Wen Hu2, Mingrui Yang2, Sanjay Jha1 School of Computer Science and Engineering, The University of New South Wales, Sydney, Australia. 2 Autonomous Systems Laboratory, CSIRO ICT Centre, Brisbane, Australia. {pkmisra, sanjay}@cse.unsw.edu.au {Wen.Hu ...

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