Results 11 - 20 of 1,295

Practical data-centric storage

by Cheng Tien Ee, Sylvia Ratnasamy, Scott Shenker - IN NSDI , 2006
"... Most data retrieval mechanisms in wireless sensor networks adopt a data-centric approach, in which data is identified directly by name rather than through the location of the node on which it is stored. The initial data-centric methods, such as directed diffusion and TinyDB/TAG, focused on the conv ..."
Abstract - Cited by 27 (4 self) - Add to MetaCart
Most data retrieval mechanisms in wireless sensor networks adopt a data-centric approach, in which data is identified directly by name rather than through the location of the node on which it is stored. The initial data-centric methods, such as directed diffusion and TinyDB/TAG, focused

Modelling Data-Centric Routing in Wireless Sensor Networks

by Bhaskar Krishnamachari, Deborah Estrin, Stephen Wicker
"... Sensor networks differ from traditional networks in several ways: sensor networks have severe energy constraints, redundant low-rate data, and many-to-one flows. The end-to-end routing schemes that have been proposed in the literature for mobile ad-hoc networks are not appropriate under these settin ..."
Abstract - Cited by 129 (1 self) - Add to MetaCart
these settings. Data-centric technologies are needed that perform in-network aggregation of data to yield energy-efficient dissemination. In this paper we model data-centric routing and compare its performance with traditional end-to-end routing schemes. We examine the impact of source-destination placement

Data-Centric Optical Networks and Their Survivability

by Didier Colle, Sophie De Maesschalck, Chris Develder, Pim Van Heuven, Adelbert Groebbens, Jan Cheyns, Ilse Lievens, Mario Pickavet, Paul Lagasse, Piet Demeester - IEEE Journal on Selected Areas in Communications , 2002
"... Abstract. The explosive growth of data-traffic, for example due to the popularity of the Internet, poses important emerging network requirements on today’s telecommunication networks. This paper describes how core networks will evolve to Optical Transport Networks (OTNs), which are optimised for the ..."
Abstract - Cited by 20 (7 self) - Add to MetaCart
for the transport of data-traffic, resulting in a IP-directly-over-OTN paradigm. Special attention is paid to the survivability of such data-centric optical networks. This becomes more and more crucial, since more and more traffic is multiplexed onto a single fiber (e.g, 160*10Gbps), implying that a single cable

Maté: A Tiny Virtual Machine for Sensor Networks

by Philip Levis, David Culler , 2002
"... Composed of tens of thousands of tiny devices with very limited resources ("motes"), sensor networks are subject to novel systems problems and constraints. The large number of motes in a sensor network means that there will often be some failing nodes; networks must be easy to repopu-late. ..."
Abstract - Cited by 510 (21 self) - Add to MetaCart
-late. Often there is no feasible method to recharge motes, so energy is a precious resource. Once deployed, a network must be reprogrammable although physically unreachable, and this reprogramming can be a significant energy cost. We present Maté, a tiny communication-centric virtual machine designed

Snapshot Queries: Towards Data-Centric Sensor Networks

by Yannis Kotidis , 2005
"... In this paper we introduce the idea of snapshot queries for energy efficient data acquisition in sensor networks. Network nodes generate models of their surrounding environment that are used for electing, using a localized algorithm, a small set of representative nodes in the network. These represen ..."
Abstract - Cited by 78 (16 self) - Add to MetaCart
In this paper we introduce the idea of snapshot queries for energy efficient data acquisition in sensor networks. Network nodes generate models of their surrounding environment that are used for electing, using a localized algorithm, a small set of representative nodes in the network

The Impact of Data Aggregation in Wireless Sensor Networks

by Bhaskar Krishnamachari, Deborah Estrin, Stephen Wicker
"... Sensor networks are distributed event-based systems that differ from traditional communication networks in several ways: sensor networks have severe energy constraints, redundant low-rate data, and many-to-one flows. Datacentric mechanisms that perform in-network aggregation of data are needed in th ..."
Abstract - Cited by 400 (12 self) - Add to MetaCart
in this setting for energy-efficient information flow. In this paper we model data-centric routing and compare its performance with traditional end-toend routing schemes. We examine the impact of sourcedestination placement and communication network density on the energy costs and delay associated with data

Data-Centric Storage in Sensornets with GHT, a Geographic Hash Table

by Sylvia Ratnasamy, Brad Karp, Scott Shenker, Deborah Estrin, Li Yin - Mobile Networks and Applications , 2003
"... Making effective use of the vast amounts of data gathered by large-scale sensor networks (sensornets) will require scalable, self-organizing, and energy-efficient data dissemination algorithms. For sensornets, where the content of the data is more important than the identity of the node that gathers ..."
Abstract - Cited by 167 (2 self) - Add to MetaCart
network addresses [1,11]. Previous work on data-centric routing has shown it to be an energy-efficient data dissemination method for sensornets [12]. Herein, we argue that a companion method, data-centric storage (DCS), is also a useful approach. Under DCS, sensed data are stored at a node determined

Rumor Routing Algorithm for Sensor Networks

by David Braginsky, Deborah Estrin , 2002
"... Advances in micro-sensor and radio technology will enable small but smart sensors to be deployed for a wide range of environmental monitoring applications. In order to constrain communication overhead, dense sensor networks call for new and highly efficient methods for distributing queries to nodes ..."
Abstract - Cited by 417 (2 self) - Add to MetaCart
that have observed interesting events in the network. A highly efficient data-centric routing mechanism will offer significant power cost reductions [17], and improve network longevity. Moreover, because of the large amount of system and data redundancy possible, data becomes disassociated from specific

Energy-aware data-centric routing in microsensor networks

by Azzedine Boukerche, Xiuzhen Cheng, Joseph Linus - in: MSWIM ’03: Proceedings of the 6th ACM international workshop on , 2003
"... Large-scale wireless sensors are expected to play an increasingly important role in future civilian and military settings where collaborative microsensors could be very effective in monitoring their operations. However, low power and innetwork data processing make data-centric routing in wireless se ..."
Abstract - Cited by 41 (3 self) - Add to MetaCart
sensor networks a challenging problem. In this paper, we propose a novel and efficient energyaware distributed heuristic, which we refer to as EAD, to build a special rooted broadcast tree with many leaves that is used to facilitate data-centric routing in wireless microsensor networks. Our EAD algorithm

Abstract Practical Data-Centric Storage

by Cheng Tien Ee, Sylvia Ratnasamy
"... Most data retrieval mechanisms in wireless sensor networks adopt a data-centric approach, in which data is identified directly by name rather than through the location of the node on which it is stored. Initial data-centric methods, such as directed diffusion and TinyDB/TAG, focused on the conveyanc ..."
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Most data retrieval mechanisms in wireless sensor networks adopt a data-centric approach, in which data is identified directly by name rather than through the location of the node on which it is stored. Initial data-centric methods, such as directed diffusion and TinyDB/TAG, focused
Results 11 - 20 of 1,295