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...
اقرأ أكثرAggregate query processing in the presence of duplicates in wireless sensor networks Author links open overlay panel Jun-Ki Min a Raymond T. Ng b Kyuseok Shim c …
اقرأ أكثرWireless 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 …
اقرأ أكثرWe 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.We conduct ext...
اقرأ أكثرIn-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.
اقرأ أكثرWireless sensor networks (WSN) are formed by many small devices that sense, process, store and transmit environmental data. These devices have limited power supply, and …
اقرأ أكثرIn this demo we show a Query Processing system based on TinyOS in WSNs, which is called TinyQP. TinyQP provides the in-network processing of several complex queries …
اقرأ أكثرPrevious 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.
اقرأ أكثرAggregate query processing in the presence of duplicates in wireless sensor networks Author links open overlay panel Jun-Ki Min a Raymond T. Ng b Kyuseok Shim c Show more
اقرأ أكثرIn 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).
اقرأ أكثرIn existing studies for query processing of WSNs, each sensor node measures environmental parameters such as temperature, light and humidity around its location. Instead, in our work, we...
اقرأ أكثرIn this demo we show a Query Processing system based on TinyOS in WSNs, which is called TinyQP. 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.
اقرأ أكثرRobust Approximate Aggregation in Sensor Data . 2.2 In-network Aggregate Query Processing A simple approach to evaluate an aggregation query is to route all sensed values to the base station and compute the aggregate there. Although this approach is simple, the number of messages and the power consumption can be large. A better
اقرأ أكثرExisting representative in-network aggregate query processing techniques propose routing algorithms and data structures for processing aggregate queries. However, these …
اقرأ أكثرWireless sensor networks have a broad range of applications, such as environment and habitat monitoring that collects meteorological data (e.g., temperature, pressure, and humidity), and combat field surveillance that tracks the movement of personnel or detects potentially hazardous chemicals.
اقرأ أكثرHowever, these 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 query processing in wireless sensor networks, this paper proposes Bucket-based ...
اقرأ أكثرWireless sensor networks have a broad range of applications, such as environment and habitat monitoring that collects meteorological data (e.g., temperature, pressure, and …
اقرأ أكثرIn existing studies for query processing of WSNs, each sensor node measures environmental parameters such as temperature, light and humidity around its location. Instead, …
اقرأ أكثرWe 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 …
اقرأ أكثرWireless 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.
اقرأ أكثرExisting representative in-network aggregate query processing techniques propose routing algorithms and data structures for processing aggregate queries. However, these aggregate...
اقرأ أكثرKey words: wireless sensor network; query processing; energy efficiency; extreme value; distributed algorithm : ——(peak region query,PRQ), ...
اقرأ أكثرIQM divides a query region into several cells according to the distribution of sensor nodes and builds a Quad-tree, and then processes aggregate queries in parallel for each cell region according to routing. Recently, in-network aggregate query processing techniques have problems such as high energy consumption in sensor nodes, low accuracy of query processing results, …
اقرأ أكثرWireless sensor networks have been widely used in many applications, such as soil temperature monitoring for plant growth and abnormal event detection of industrial …
اقرأ أكثرAggregate Queries in Wireless Sensor Networks. Abstract. Recently as efficient processing of aggregate queries for fetching desired data from sensors has been recognized as a crucial part, in-network aggregate ...
اقرأ أكثرIn-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 …
اقرأ أكثرWe present a privacy data aggregation protocol called Queries Privacy Protection for Data Aggregation (QPPDA) which involves three phases: the grid division, the key generation, and the query processing. Firstly, a network is divided into adjacent virtual cells, and the nodes within neighbouring cells can directly communicate with each other.
اقرأ أكثرRecently 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 inte...
اقرأ أكثرWireless sensor networks (WSN) are formed by many small devices that sense, process, store and transmit environmental data. These devices have limited power supply, and usually it is not feasible to replace their batteries because WSN may be deployed to monitor inhospitable environments [1].
اقرأ أكثرThis paper proposes an approach for query optimization in Sensor networks that cause increasing of network life time via executing operators with optimized order and optimized method for executing aggregation functions that sensor nodes do not sent unimportant data to their parents. Sensor Network Integration with Streaming Database Systems
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