Optimizing in-network aggregate queries in wireless sensor networks … - TinyCasper: A Privacy-Preserving Aggregate Location …

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 …to ensure that the query processing layer is tightly in-tegrated with the networking layer. Second, the notion of the cost of a query plan has changed, as the critical resource in a sensor network is power, and query opti-mization and query processing have to be adapted to take this optimization criterion into account.

Robust and Efficient Aggregate Query Processing in Wireless Sensor Networks - Aggregate Queries in Wireless Sensor Networks | Semantic Scholar

the processing of grouped aggregate queries. However, since groups in their approaches are disjoint, some relevant regions to the query can be missing. In this paper, we propose REQUEST, region-based query processing in sensor networks. A region in our approach is defined as a maximal set of nodes located within a circle having a diameter ...Aggregate 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 ...

Aggregate Query Processing in Ad-Hoc Sensor Networks - aggregate query processing sensor networks

Assembling Regions for Efficacious Aggregate Query Processing in Wireless Sensor Networks by Apostolos Fertis Diploma, Electrical and Computer Engineering (2003) ... 1.1 Query answering in sensor networks ..... 1.2 Encouraging the cooperation among sensors ..... 1.3 Protocols for improving aggregation ..... 2 Background 2.1 Regions. ...This study proposes a method of in-network aggregate query processing to reduce the number of messages incurred in a wireless sensor network. When aggregate queries are issued to the resource-constrained wireless sensor network, it is important to efficiently perform these queries. Given a set of multiple aggregate queries, the proposed ...

ProcessingWindow Queries in Wireless Sensor Networks - Routing and processing multiple aggregate queries in sensor networks

Consider a node Root, which initiates a continuous query over the values observed by a set of data sources, and requests that the results of this query be reported to it at regular time periods.The time interval between two such consecutive time periods is referred to as the epoch of the query. The continuous query is disseminated through the network in search …niques designed for wireless sensor networks. On the other side, the aggregate query processing module is embedded in-side the server to support aggregate query processing over anonymized locations. TinyCasper system administrators can change the privacy requirement, i.e., k-anonymity re-quirement, at anytime. Finally, system users can issue snap-

SART: Speeding up Query Processing in Sensor Networks … - Query Privacy Preserving for Data Aggregation in Wireless Sensor Networks

Abstract. This paper presents a novel approach to processing continuous aggre-gate queries in sensor networks, which lifts the assumption of tree-based rout-ing. Given a query workload and a special-purpose gateway node where results are expected, the query optimizer exploits query correlations in order to gen-erate an energy-efficient ...A novel approach to processing continuous aggregate queries in sensor networks, which lifts the assumption of tree-based routing and proposes common routing structures to share the sub-aggregates at an early stage, thus further reducing the communication cost of result propagation. We present a novel approach to processing continuous aggregate queries in sensor …

Routing and Processing Multiple Aggregate Queries in … - Query Processing for Sensor Networks

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).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, ...

(PDF) Aggregate Queries in Wireless Sensor Networks - Interplay of processing and routing in aggregate query …

Processing in Wireless Sensor Networks by Apostolos Fertis Diploma, Electrical and Computer Engineering (2003) ... submitted to the network. The query asks for an aggregate over the measurements. The propagation of all measured values to a central computation point is resource consuming. Tiny AGgregation (TAG)In this paper, we present new algorithms for obtaining approximate aggregate statistics from large sensor networks. The user specifies the maximum error that he is willing to tolerate …

Processing approximate aggregate queries in wireless sensor networks - Aggregate query processing in the presence of

Finally, the nodes aggregate multiple replies into a single packet which is transmitted to BS hop-by-hop. ... "SafeQ: secure and efficient query processing in sensor networks," in Proceedings of the International Conference on Information Communications, pp. 2642–2650, San Diego, CA, USA, March 2010.For monitoring queries that aggregate the observed values from a group of sensor nodes, suggested the construction of a greedy aggregation tree that seeks to maximize the number …

Aggregate Queries in Wireless Sensor Networks - Processing approximate aggregate queries in wireless …

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 …This paper presents a query-driven approach to routing and processing continuous aggregate queries in sensor net-works. Given a query workload and a special-purpose gate-way node where results are expected, the query optimizer exploits query correlations in order to generate an energy-efficient distributed evaluation plan. The proposed opti-

Robust and efficient aggregate query processing in wireless sensor - LNCS 6588

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). …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 …

Effective processing of continuous group-by aggregate queries in sensor … - Assembling Regions for Efficacious Aggregate Query …

However, 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 ...aggregate query processing sensor networks, Related Products: company that specializes in aggregate mining - Get Prices – More detailed RR Equipment - Crushers, Aggre. Go to Product Center. aggregate query processing sensor networks, aggregate query processing sensor networks. As a professional crushing and grinding equipments manufacturer ...