aggregate query processing in wireless sensor network
Data Aggregation in Wireless Sensor Network: A Survey
Keywords: Data Aggregation, Wireless sensor network, security. 1. Introduction Data aggregation is the process of collecting and aggregating the useful data. Data aggregation is considered as one of the fundamental processing procedures for saving the energy. In WSN data aggregation is an effective way to save the limited resources. The main goal of data aggregation .
A Survey on Privacy Preserving Data Aggregation Protocols ...
tion, wireless sensor networks, data privacy, end to end data aggregation,hop by hop aggregation 1. Introduction The Wireless Sensor Networks [1] is an ad hoc network consisting of a large number of distributed autonomous wireless devices called sensors, which is densely deployed in remote areas to detect the environmental conditions
Efficient aggregation technique for data privacy in ...
Abstract: In wireless sensor networks (WSNs), the existing clusterbased private data aggregation techniques are energy intensive due to high message transmission complexity. Reliable data transmissions are also vital for resource constraint WSNs. To address these issues, the authors propose a reliability enabled private data aggregation technique that has message .
[PDF] Routing and processing multiple aggregate queries in ...
![[PDF] Routing and processing multiple aggregate queries in ...](/ha1n3mg/94.jpg)
We present a novel approach to processing continuous aggregate queries in sensor networks, which lifts the assumption of treebased routing. Given a query workload and a specialpurpose gateway node where results are expected, the query optimizer exploits query correlations in order to generate an energyefficient distributed evaluation plan.
Reliable spatial window aggregation query processing ...
· 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 humidity etc. Existing spatial window aggregation query processing algorithms are based on the assumption that the communiion links are ideal which means .
Enable Efficient Data Aggregation for RegionBased TopK ...
We study data aggregation for regionbased topk queries in wireless sensor networks, which is one kind of internet of things. Because the energy of sensor nodes is limited and a sensor node will die if it has no energy left, one of the important targets for all protocols in wireless sensor networks is to decrease the energy consumption of the sensor nodes.
Optimizing innetwork aggregate queries in wireless sensor ...
· · Previous studies propose innetwork 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. Sharing these intermediate .
Secure Outsourced Aggregation via Oneway Chains
a wide and diverse set of query processing functionalities on sensor data. For example, important queries in SenseWeb include Max/Min, Sum and related queries, Uniform Samples, Quantiles, Topk readings, Frequent Readings, etc. In contrast, typical wireless sensor networks are deployed for dedied sensing where a relatively small set of aggregates can be su–cient in most cases. 2) .
Interplay of processing and routing in aggregate query ...
Interplay of processing and routing in aggregate query optimization for sensor networks Niki Trigoni Alexandre Guitton Antonios Skordylis Computing Laboratory, University of Oxford, Oxford OX1 3QD, UK Abstract. This paper presents a novel approach to processing continuous aggregate queries in sensor networks, which lifts the assumption of treebased routing. Given a query .
Efficient Continuous Skyline Query Processing in Wireless ...
Owing to the rapid advent of wireless technology and proliferation of smart sensors, wireless sensor networks (WSNs) have been widely used to monitor and query the physical world in many appliions based on the Internet of Things (IoT), such as environmental monitoring and event surveillance. A WSN can be treated as a distributed database to respond to user queries.
Optimizing innetwork aggregate queries in wireless sensor ...
· Previous studies propose innetwork 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. Sharing these intermediate results of queries .
Curve Query Processing in Wireless Sensor Networks
· 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 queries of the maximal, minimal, and .
Exact InNetwork Aggregation with Integrity and Confidentiality
Abstract— Innetwork aggregationreduces the energy cost of processing aggregate queries (such as SUM, MAX, etc.) in wireless sensor networks. Recently, research has focused on secure innetwork aggregation, motivated by the following two scenarios: (i) the sensors are deployed in open and unsafe environments, and (ii) the aggregation process is outsourced to an .
Query Aggregation for Providing Efficient Data Services in ...
Keywords—Sensor Network, Query Aggregation I. INTRODUCTION In this paper, we study a query aggregationbased approach to provide efficient data services in wireless sensor networks. Wireless sensor networks have gained much importance in a wide range of civil and military appliions. The sensor networks are required to provide efficient data services, where .
OutlierAware Data Aggregation in Sensor Networks
data processing appliions using sensor networks must deal with information that is at times unreliable and unpredictable. The goal of our techniques is to provide a resilient query processing platform for aggregate queries over a network consisting of cheap, wireless sensor nodes that are prone to dirty data. This requires identifying potentially multiple "abnormal" readings .
Query Privacy Preserving for Data Aggregation in Wireless ...
· Wireless Sensor Networks (WSNs) are increasingly involved in many appliions. However, communiion overhead and energy efficiency of sensor nodes are the major concerns in WSNs. In addition, the broadcast communiion mode of WSNs makes the network vulnerable to privacy disclosure when the sensor nodes are subject to malicious behaviours.
Query Processing for Sensor Networks
In this paper, we develop a query layer for wireless sensor networks. Our approach is motivated by the followingthree design goals. First, we believe thatdeclar ative queries are especially suitable for sensor network interaction: Clients issue queries without knowing how the results are generated, processed, and returned to the client. Sophistied alog management, query .