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检索条件"任意字段=6th IEEE International Conference on Distributed Computing in Sensor Systems"

共 6276 条记录，以下是4811-4820 订阅

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μT-Kernel: A Low Power and Small Footprint RTOS for Networked Tiny Devices

μT-Kernel: A Low Power and Small Footprint RTOS for Network...

引用

6th international conference on Information Technology - New Generations (ITNG 2009)

作者： Kamio, Masato Nakamura, Keiichi Kobayashi, Shinsuke Koshizuka, Noboru Sakamura, Ken Univ Tokyo Tokyo 1138654 Japan

ISBN: (纸本)9781424437702

this paper proposes mu T-Kernel, a real-time operating system for networked tiny devices, which adopts a preemptive priority-based scheduling. It provides a sophisticated application programming interface to facilitate software development. In addition, to provide rich functionalities with a small-footprint, the kernel is reconfigurable with respect to the API. Moreover, mu T-ernel supports a power management which utilizes the periodicity of WSN applications. We conducted performance analyses of the memory footprint and energy consumption, and migrated sample applications to show the programmability of mu T-Kernel. Our results show mu T-Kernel is effective for developing WSN systems while realizing a kernel small enough to fit into a resource-constrained node.

关键词： Embedded Real-Time Operating System Low Power Small Footprint Multitasking sensor Networks

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SMSR: A Scalable Multipath Source Routing Protocol for Wireless sensor Networks

SMSR: A Scalable Multipath Source Routing Protocol for Wirel...

引用

6th international conference on Ubiquitous Intelligence and computing

作者： Oh, Sutaek Kim, Dongkyun Kang, Hyunwoo Jeong, Hong-Jong Kyungpook Natl Univ Dept Comp Engn Taegu South Korea IDIS Corp Daejeon South Korea Elect & Telecommun Res Inst Seoul South Korea

ISBN: (纸本)9783642028298

In wireless sensor networks (WSNs), providing resilience (fault tolerance) is a challenging issue. A lot of multipath routing protocols, therefore, have been proposed to achieve the goal;however, they usually suffer from control message overhead or a lack of scalability. Although some protocols utilize partially disjoint paths or longer alternate paths in order to reduce such overhead, they cannot guarantee resilience, because a single failure on a shared node breaks all the paths. In this paper, we therefore propose a scalable multipath source routing (SMSR) protocol. In SMSR, a sink node collects each sensor node's one-hop upstream neighbor information during an initialization phase which the sink node then uses in order to construct several shortest node-disjoint downstream (sink-to-sensor) paths. When transmitting downstream packets, the source routing technique is exploited. On the other hand, each sensor node forwards upstream (sensor-to-sink) packets to one of its upstream neighbors, through the concept of gradient-based routing. the initialization phase depends on only one-time flooding and n (network size) times unicasting, and each sensor node manages only one-hop upstream neighbor information. In this sense, SMSR is scalable in terms of the overhead and the size of routing tables in sensor nodes. Particularly, since SMSR provides several node-disjoint paths with low overhead, it can guarantee resilience efficiently. through experiments using both ns-2 simulation and our real world test-bed, we verify that SMSR achieves the goal better than other existing routing protocols.

关键词： sensor nodes

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distributed authentication for services commercialization in ad hoc networks 09

Distributed authentication for services commercialization in...

引用

6th international conference on Mobile Technology, Application and systems, Mobility '09

作者： Moustafa, Hassnaa Forestier, Jacky Chaari, Mohamed 38-40 rue de General Leclerc 92130 Issy les Moulineaux France Paris France

ISBN: (纸本)9781605585369

Users' authentication and authorization to services access are two important challenges standing against the deployment of ad hoc networks by network operators and services commercialization using these networks. In this paper, we consider ad hoc networks real deployment, in which advanced services are provided to users (mainly multimedia services, ex, music and video transfer and sharing, audio-visual guidance during festivals), considering that the services are provided by dedicated ad hoc nodes playing the role of application servers (application providers). We proposed a novel solution allowing, the mutual authentication of each user with respect to the network operator/service provider, the authentication of each ad hoc node with respect to its neighbors during the ad hoc user access to the network, and the authorization of each user to access the required services. Our proposed solution employs a Kerberos authentication model, extending it to the ad hoc network environment. We provided a security analysis of this solution showing its resistance against a number of attacks and we implemented it analyzed its performance in an ad hoc network test-bed, mainly in term of authentication delay compared to traditional authentication approaches. Copyright © 2009 ACM.

关键词： Authentication

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Optimal rate allocation of compressed data streams in multihop sensor networks

引用

5th ieee international conference on distributed computing in sensor systems, DCOSS 2009

作者： Lin, Chun Lung Wang, Jia Shung Department of Computer Science National Tsing Hua Univeristy Hsinchu Taiwan

ISBN: (纸本)3642020844

Consider that a transform coder is installed at each sensor node. In this paper, an analytical framework for optimal rate allocation of compressed data streams in wireless multihop sensor networks is presented. Compact, necessary and sufficient closed-form solution to the optimal rate allocation problem is derived based on the lower rate approximation of rate distortion function. Extensive simulations were conducted using real-world data traces, LEM and Intel Lab datasets. the simulation results show that the information of compression ratios of sensor data can be utilized to optimally distributing the limited transmission rate among sensors to greatly reduce the amount of transmitted data. Moreover, the performance gain of the optimal rate allocation increases exponentially at lower rates, lower compression ratios of sensor data and larger variation between compression ratios. © 2009 Springer Berlin Heidelberg.

关键词： sensor nodes

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Semantically supported SLA negotiation

Semantically supported SLA negotiation

引用

2009 10th ieee/ACM international conference on Grid computing, Grid 2009

作者： Micsik, András Frutos, Henar Muñoz Kotsiopoulos, Ioannis Koller, Bastian Department of Distributed Systems MTA SZTAKI Lágymányosi utca 11 Budapest 1111 Hungary Telefónica Investigación y Desarrollo S.A C/ Emilio Vargas 6 28043 Madrid Spain School of Computer Science University of Manchester Kilburn Building Oxford Road Manchester M13 9PL United Kingdom High Performance Computing Center Stuttgart University of Stuttgart Nobelstrasse 19 70550 Stuttgart Germany

ISBN: (纸本)9781424451494

the evolution of services market raises the need for automatic support for negotiating service use criteria. In order to reach an agreement, the negotiating parties need to develop a common understanding of the Quality of Service (QoS) terms which are part of the Service Level Agreement (SLA). the use of semantic annotations together with reasoning can increase the level of flexibility and automation in SLA management. A framework is presented for SLA negotiation allowing the two parties to use their own terminologies. © 2009 ieee.

关键词： Semantics

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On real-time capacity of event-driven data-gathering sensor networks

On real-time capacity of event-driven data-gathering sensor ...

引用

2009 6th Annual international conference on Mobile and Ubiquitous systems: Networking and Services, MobiQuitous 2009

作者： Jiang, Bo Ravindran, Binoy Cho, Hyeonjoong Department of Electrical and Computer Engineering Virginia Polytechnic Institute State University Blacksburg VA 24061 United States Department of Computer and Information Science Korea University Seoul 136-701 Korea Republic of

ISBN: (纸本)9789639799592

Network capacity is a critical feature of wireless ad hoc and sensor networks. It is particularly challenging to determine network capacity when combined with other performance objectives such as timeliness. this paper investigates real-time capacity for event-driven data-gathering sensor networks with the unbalanced many-to-one traffic pattern. First, we compute the average allowable throughputs of nodes for a given event distribution, based on which we then leverage results of queuing theory to estimate the per-hop delays. We develop a new slack time distribution scheme for the unbalanced many-to-one traffic pattern, and prove it optimal in terms of the per-hop success probability. Here the per-hop success probability is defined as the probability for a packet to meet its sub-deadlines at each hop. Finally, we define the network-wide real-time capacity, i.e., given a threshold for the per-hop success probability, how much data (in bit per second) can be delivered to the sink node meeting their deadlines. For these research results, we provide some application scenarios, including configuring packet deadlines or verifying a specific deadline configuration, setting a packet's priority for dynamic scheduling, and trading the reliability of real-time data delivery for capacity efficiency etc. We also study two special cases of WSNs, the chain model and the continuous model. Our slack distribution scheme yields consistent or similar results for these two special cases as that of past works, but is more adaptive by supporting more generic cases.

关键词： sensor nodes

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Developing Service Oriented sensor/Actuator Networks using a Tailored Middleware

Developing Service Oriented Sensor/Actuator Networks using a...

引用

6th international conference on Information Technology - New Generations (ITNG 2009)

作者： Sommer, Stephan Buckl, Christian Knoll, Alois Tech Univ Munich Dept Informat D-8046 Garching Germany

ISBN: (纸本)9781424437702

Programming sensor/actuator networks requires expertise in low-level programming, mainly because of using resource constraint hardware. the code of the resulting systems has typically no clear separation between application and system (infrastructure) logic. this minimizes the possibility to reuse code and leads very often, to the necessity of major changes, in case the underlying platform (hardware or operating system) is changed. In this paper, we present a model driven approach based on the service oriented paradigm to support, the different parties involved in the development, namely platform experts, domain experts and end users. the goal of our approach is to enable the use of pre-implemented services in a potentially heterogeneous sensor/actuator network that can be easily combined to form an application. the interaction of these components is implemented by a middleware. To address the resource constraints, this middleware is tailored for each application and platform using a domain specific development tool. the platform experts can expand the code generator to support further platforms and features. Domain experts provide services and describe a potential interaction between different services. the end users can select, configure and combine adequate services to form a running application.

关键词： Middleware

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UD-TDMA: A distributed TDMA protocol for underwater acoustic sensor network

UD-TDMA: A distributed TDMA protocol for underwater acoustic...

引用

ieee Internatonal conference on Mobile Adhoc and sensor systems (MASS)

作者： Zhengbao Li Zhongwen Guo Haipeng Qu Feng Hong Pengpeng Chen Meng Yang Department of Computer Science College of Information Science and Engineering Ocean University of China Qingdao China

this paper presents a distributed and robust time slot scheduling algorithm, which is suitable for underwater acoustic sensor network (UASN). the information of nodes' 2-hop neighbors is needed to be collected and then be used to calculate nodes' initial time slot by a distributed algorithm. A maximal independent set is formed by the nodes which were assigned with the same initial slot. Some theorems were proved to reveal that in an interference graph the size of this maximal independent set is at least of the size of the maximum independent set of the nodes. the simulation compares UD-TDMA with other three MAC protocols. the results show that the proposed protocol is effective in the UASN with random deployment, especially in high-density underwater acoustic sensor network.

关键词： Time division multiple access Underwater acoustics Acoustic sensors Frequency synchronization Propagation delay Media Access Protocol distributed algorithms Interference Access protocols throughput

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A note on the study of Bluetooth networks' distributed algorithms

A note on the study of Bluetooth networks' distributed algor...

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ieee Internatonal conference on Mobile Adhoc and sensor systems (MASS)

作者： Ahmed Jedda Nejib Zaguia Guy-Vincent Jourdan University of Ottawa Canada

Bluetooth has provided many features that enable wireless ad-hoc networks, but it has also introduced many problems. the root cause of these problems lies in its communication mechanisms. We argue in this paper that the models that have been used to study distributed algorithms on Bluetooth networks do not adequately model these networks in most cases, and were often oversimplified. this is mainly due to how the many restrictions that the Bluetooth specifications impose on such networks are taken into account, and the lack of ldquoshared knowledgerdquo of these restrictions among the researchers of this field. We give some examples to back our argument. We give also some suggestions and proposals to overcome these issues.

关键词： Bluetooth distributed algorithms Algorithm design and analysis Ad hoc networks Proposals Mobile ad hoc networks Interference Costs Spread spectrum communication Noise robustness

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PNet: A Grid Type sensor Network of Reconfigurable Nodes

PNet: A Grid Type Sensor Network of Reconfigurable Nodes

引用

international conference on distributed computing systems Workshop

作者： Varun Subramanian Alex Doboli Department of Electrical and Computer Engineering State University of New York Stony Brook Stony Brook NY USA

this paper discusses a grid-type sensor network with reconfigurable PSoCs as sensor nodes, and details the middleware routines that support the high-level model for distributed programming. the advantages of using reconfigurable PSoCs over other architectures, like MICA2 motes, are also discussed. the paper refers to a case study to illustrate the capabilities of the proposed network concept.

关键词： sensor systems Temperature sensors Middleware System-on-a-chip Temperature distribution Network servers Temperature measurement distributed computing conferences Computer architecture

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