an aggregate query processing system for wireless network

Cluster Based Data Aggregation for Wireless Sensor Network

Cluster Based Data Aggregation for Wireless Sensor Network SARANYA. V1, KALAIVANI. A2 Communication systems Bharathiyar Institute of Engineering for women ([email protected]) Abstract Data aggregation in wireless sensor networks eliminates redundancy to improve bandwidth utilization and energy efficiency of sensor nodes. One

Accuracy Vs. Lifetime: Linear Sketches for Approximate ...

1.1 Query Processing in Sensor Networks From the database perspective, in{network aggregation is a mode for evaluating aggregate queries over the sensor net-work. The common approach to (aggregate) query process-ing in sensor networks has two phases: the dissemination phase and the aggregation phase. For example consider a

SDACQ: Secure Data Aggregation for Coexisting Queries in ...

the corresponding user. The aggregation query is then routed to the sensor network using power cost incurred [5] or by dividing the query region into cells [6]. Some algorithms perform query processing by constructing separate routing tree for each query [7]. Niedermayer et al., [8] addressed the problem of computing exact quantiles

Aggregation of Continuous Monitoring Queries in Wireless ...

Abstract. In this demo paper, we introduce our sensor query aggregation system, Continuous Monitoring Query Evaluation System (CMQES), which is a test-bed for studying the aggregation problems of continuous monitoring queries (CMQ) on sensor data streams in a wireless sensor networking system.

Secure pattern based aggregation using query processing ...

Abstract: Data aggregation is the technique used togather the sensor data to reduce the duplicate data transmission. It is an effectual approach for Wireless Sensor Networks (WSNs) to save energy and prolong network life time. Existing Reliable Spatial Window Aggregation (RESA) query processing algorithm proposed to reduce packet loss rate during data communication and balance the load of …

Aggregate Location Monitoring for Wireless Sensor Networks ...

aggregate query processor that has the ability to answer aggregate query Q that asks about the number of objects in a certain area Q.Area ∈S.Area. Wireless sensor network. In our system, we consider stationary wireless sensor nodes. Each sensor node has only the capacity to report aggregate locations to a server that contains the aggregate ...

Query Processing for Sensor Networks - cs.cornell.edu

tural components of such a query layer, con-centrating on in-network aggregation, interac-tion of in-network aggregation with the wire-less routing protocol, and distributed query processing. Initial simulation experiments with the ns-2 network simulator show the tradeoffs of our system. 1 Introduction Recent developments in hardware have ...

SDAMQ: Secure Data Aggregation for Multiple Queries in ...

7. Conclusions This paper proposes SDAMQ: Secured Data Aggregation for Multiple Queries in Wireless Sensor Networks that integrates multi-query aggregation with additively homomorphic encryption. Most of the multi-query aggregation techniques aggregate data common to multiple queries by eliminating redundancy.

Supporting Spatial Aggregation in Sensor Network Databases

Supporting Spatial Aggregation in Sensor Network ... as a part of TinyDB 1 which is a query processing system for a network of Berkeley motes. The service employs a SQL interface to the sensor data streams. It presents in-network processing of the aggregation queries on the data generated in the sensor network. We use the ad-hoc query

Expos e zur Diplomarbeit Processing Multiple Aggregation ...

changing link qualities. An e cient query processing system has to use protocols which are able to deal with these conditions. Most existing solutions like for processing aggregation queries in wireless sensor networks, like [MFHH02] and [TGS06], assume a static network with a single gateway node used to dissem-inate all queries over over ...

A Sensor Network Data Aggregation Technique - IJCTE

tackled the data management topic in wireless sensor networks including query processing and data handling but none generic useful results and findings were originated for implementation. There has been a lot of work and approaches on query processing in distributed database systems [8 and 9], A Sensor Network Data Aggregation Technique

Processing approximate aggregate queries in wireless ...

Dec 01, 2006· Read "Processing approximate aggregate queries in wireless sensor networks, Information Systems" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Energy-Efficient Aggregate Query Evaluation in Wireless ...

Such in-network aggregation can dramatically decrease the number of massages transmitted through pushing the partial computation tasks from the base station into the intermediate nodes, so has been used as a paradigm in energy-constrained wireless sensor networks. To process an aggregate query, in-network aggregation consists of

Data Aggregation and Query Processing in WSN - CORE

The design of a WSN depends significantly on the application, and it considers factors like the environment, the application's design objectives, cost, hardware and system constraints. The goal of our work is to present a comprehensive approach of cluster based data aggregation and processing of various aggregation queries in WSN.

TinyCasper: A Privacy-Preserving Aggregate Location ...

This demo presents a privacy-preserving aggregate location monitoring system, namely, TinyCasper, in which we can monitor moving objects in wireless sensor networks while preserving their location privacy. TinyCasper consists of two main modules, in-network location anonymization and aggregate query processing over anonymizedlocations. Inthe

Abstract For Aggregate Query Processing In Peer To P

aggregate query processing . aggregate query processing in peer to peer source … download Query processing in peer to peer network project base paper pdf, source code and project report with ppt.which is implemented in visual studio C#.Net platform. abstract for aggregate query processing …

Data Aggregation and Query Processing in WSN - IJSER

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.

Robust Approximate Aggregation in Sensor Data …

Robust Approximate Aggregation in Sensor Data Management Systems · 5 parents. This process runs continuously and after h steps, where h is the height of the aggregation tree, the aggregate result arrives at the root. In order to conserve energy, sensor nodes sleep as much as possible, i.e. whenever the processor and radio are idle.

Approximate Aggregation Techniques for Sensor Databases

tention paid to efficient query processing for aggregate queries [15, 20, 23]. In the TAG system [15], users connect to the sen-sor network using a workstation or base station directly connected to a sensor designated as the sink. Aggregate queries over the sensor data are formulated using a sim-ple SQL-like language, then distributed across ...

2010 IEEE International Conference on Computational ...

IV. QUERY PROCESSING 1.Query Models . COUGAR approach [10] proposes a query layer to support aggregate queries. With the interface provided, the clients can issue queries without knowing how the results are generated, processed and returned by the sensor network to them. The query layer processes declarative queries and

CiteSeerX — Data Aggregation and Query Processing in WSN

data aggregation query processing system constraint attractive research topic now-a day wireless sensor network various aggregation query sensor node comprehensive approach max aggregate function application design objective wide range remote environment monitoring wireless interface aggregation operation important application aggregate function

Accuracy Vs Lifetime: Linear Sketches for Appoximate ...

Accuracy Vs Lifetime: Linear Sketches for Appoximate Aggregate Range Queries in Sensor Networks1,2 Konstantinos Kalpakis, Vasundhara Puttagunta and Parag Namjoshi Abstract Query processing in sensor networks is critical for several sensor based monitoring applications and poses several challenging research problems. The in–network aggregation ...

Data aggregation in wireless sensor network, 11751 d5811

Dec 25, 2012· In-network aggregation is the Global process of gathering and routing information through a multi-hop network, processing data at intermediate nodes with the objective of reducing resource consumption (in particular energy), thereby increasing network lifetime. There are two approaches for in-network aggregation: with size reduction and without ...

Robust Aggregation in Sensor Networks - cs.utah.edu

In-network Aggregate Query Processing: A simple approach to evaluate an aggregation query is to reliably 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 approach is to leverage the computational

(PDF) Routing and processing multiple aggregate queries in ...

The intersection partial ag- find efficient routes that minimize the communication cost gregate is thus merged immediately with the other two query of executing multiple aggregate queries, by studying the in- subaggregates and, eventually, only two partial results are terplay between the processing and routing aspects of query sent to the gateway.

A Dynamic Data Aggregation Scheme for Wireless Sensor ...

Chatterjea, S & Havinga, PJM 2003, A Dynamic Data Aggregation Scheme for Wireless Sensor Networks. in Proceedings of the 14th ProRISC workshop on Circuits, Systems and Signal Processing. pp. -, 14th ProRISC Workshop on Circuits, Systems and Signal Processing 2003, Veldhoven, Netherlands, 25/11/03.

Interplay of Processing and Routing in Aggregate Query ...

This paper presents a novel approach to processing continuous aggregate queries in sensor networks, which lifts the assumption of tree-based routing. Given a query workload and a special-purpose...

Processing approximate aggregate queries in wireless ...

Information Systems 31 (2006) 770–792 Processing approximate aggregate queries in wireless sensor networks$ Antonios Deligiannakisa, Yannis Kotidisb,, Nick Roussopoulosa aUniversity of Maryland, USA bDepartment of Information Systems and Analysis, AT&T Labs-Research, P.O. Box 971, Florham Park, NI 07932-0971, USA Received 5 February 2004; received in revised form 1 February 2005; accepted …