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Implementing a graph neuron array for pattern recognition within unstructured wireless sensor networks

引用

EUC 2005 Workshops: 2nd international Symposium on Ubiquitous Intelligence and Smart Worlds, UISW 2005, IFIP international Symposium on Network-Centric Ubiquitous systems, NCUS 2005, 1st international Workshop on security in Ubiquitous Computing systems, SecUbiq 2005, 1st international Workshop on RFID and Ubiquitous Sensor networks, USN 2005 and international Workshop on Trusted and Autonomic Ubiquitous and Embedded systems, TAUES 2005 held in conjunction with the IFIP international conference on Embedded and Ubiquitous Computing, 2005

作者： Baqer, M. Khan, A.I. Baig, Z.A. Monash University Australia

ISBN: (纸本)3540308032

Graph Neuron (GN) is a network-centric algorithm which envisages a stable and structured network of tiny devices as the platform for parallel distributed pattern recognition. However, the unstructured and often dynamic topology of a wireless sensor network (WSN) does not allow deployment of such applications. In this paper, using GN as a testbed application, we show that a simple virtual topology overlay would enable distributed applications requiring stable structured networks to be deployed over dynamic unstructured networks without any alteration. © IFIP international Federation for Information Processing 2005.

关键词： Wireless sensor networks

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Cooperative spatial multiplexing in mobile ad hoc networks

Cooperative spatial multiplexing in mobile ad hoc networks

引用

2nd IEEE international conference on Mobile Ad-hoc and Sensor systems, MASS 2005

作者： Kim, Sang Wu Department of Electrical and Computer Engineering Iowa State University Ames IA 50011

ISBN: (纸本)0780394666

We propose a new cooperative relaying technique for delivering high-rate data in mobile ad hoc networks. The proposed approach is to make each relay node to detect only a subset (called sub-stream) of the source data stream and all relay nodes to forward their low rate sub-streams simultaneously over the same physical channel. At the destination, multiple receive antennas or RAKE fingers separate the sub-streams and reassemble them based on their spatial characteristics or spreading codes, respectively. The distinctive benefit of this approach is the reduction of transmit and receive processing requirements on each relay node, while providing significant savings in the overall transmit and receive energy, particularly in the high spectral efficiency regime. Therefore, the proposed approach is particularly attractive in situations where each relay can handle only low-rates due to limited resources in terms of energy, bandwidth, hardware, and space (size). The proposed relaying architecture also provides an additional physical layer security mechanism. © 2005 IEEE.

关键词： Multiplexing

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distributed unique global ID assignment for sensor networks

Distributed unique global ID assignment for sensor networks

引用

2nd IEEE international conference on Mobile Ad-hoc and Sensor systems, MASS 2005

作者： Ould-Ahmed-Vall, El Moustapha Blough, Douglas M. Heck, Bonnie S. Riley, George F. School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA 30332-0250

ISBN: (纸本)0780394666

A sensor network consists of a set of battery-powered nodes, which collaborate to perform sensing tasks in a given environment. It may contain one or more base stations to collect sensed data and possibly relay it to a central processing and storage system. These networks are characterized by scarcity of resources, in particular the available energy. We present a distributed algorithm to solve the unique ID assignment problem. The proposed solution starts by assigning long unique IDs and organizing nodes in a tree structure. This tree structure is used to compute the size of the network. Then, unique IDs are assigned using the minimum number of bytes. Globally unique IDs are useful in providing many network functions, e.g. configuration, monitoring of individual nodes, and various security mechanisms. Theoretical and simulation analysis of the proposed solution have been preformed. The results demonstrate that a high percentage of nodes (more than 99%) are assigned globally unique IDs at the termination of the algorithm when the algorithm parameters are set properly. Furthermore, the algorithm terminates in a relatively short time that scales well with the network size. For example, the algorithm terminates in about 5 minutes for a network of 1,000 nodes. © 2005 IEEE.

关键词： Wireless telecommunication systems

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Authenticated flooding in large-scale sensor networks

Authenticated flooding in large-scale sensor networks

引用

2nd IEEE international conference on Mobile Ad-hoc and Sensor systems, MASS 2005

作者： Son, Ju-Hyung Luo, Haiyun Seo, Seung-Woo School of Electrical Engineering and Computer Science Seoul National University Seoul 151-742 Korea Republic of Department of Computer Science University of Illinois at Urbana-Champaign Urbana IL 61801-2302 United States

ISBN: (纸本)0780394666

Two asymmetric mechanisms are often employed in large-scale systems to achieve scalable and efficient authenticated broadcast. However, cryptographic asymmetry based on public-key schemes is computationally expensive, while time asymmetry based on delayed-key release requires time synchronization cross the entire network and temporal buffering of messages at receivers. Neither approach is suitable for large-scale sensor networks composed of computation and storage constrained low-end sensor nodes. In this paper, we propose novel flooding authentication mechanism based on our "Information Asymmetry" model. Our design is built on top of symmetric cryptography for computation efficiency, and leverages the asymmetric key distribution between the sink and sensor nodes. Through intensive analysis we demonstrate optimized tradeoff between the resilience to compromised sensor nodes and the sea lability to system size through space-efficient Bloom filters as the authenticator. With a novel "false negative" tuning knob introduced in the construction of Bloom filter, we show that the scalability of the authentication primitive can be greatly improved at the cost of small controlled degradation of security, therefore rendering a practical authenticated flooding for large-scale sensor networks. © 2005 IEEE.

关键词： Wireless telecommunication systems

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Local data protection for in-network processing in sensor networks

Local data protection for in-network processing in sensor ne...

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2nd IEEE international conference on Pervasive Services (ICPS 2005)

作者： Ouyang, Y Le, ZY Ford, J Makedon, F Dartmouth Coll Dept Comp Sci Hanover NH 03755 USA

ISBN: (纸本)0780390326

Sensor networks are playing a more and more important role in monitoring problems such as surveillance and tracking moving objects. In-network processing has been shown to improve scalability, prolong sensor network lifetimes, and diminish computational demands. However, securely querying past data becomes a challenge. An unimportant event in the past could become interesting later, therefore, methods for securely placing a query on a past event should be available. This paper focuses on the challenges associated with securing queries on past data in a sensor network, and proposes methods for past data aggregation using in-network processing. Two different methods are proposed for securing queries on past data;both use forward secure cryptography and provide forward secure data authentication. We compare their security and performance, and also compare them with previous schemes.

关键词： distributed computer systems

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A self-adaptive intrusion detection method for AODV-based mobile ad hoc networks

A self-adaptive intrusion detection method for AODV-based mo...

引用

2nd IEEE international conference on Mobile Ad-hoc and Sensor systems, MASS 2005

作者： Kurosawa, Satoshi Nakayama, Hidehisa Kato, Nei Jamalipour, Abbas Nomoto, Yoshiaki Graduate School of Information Sciences Tohoku University Aoba 6-3-09 Aoba-ku Sendai Miyagi 980-8579 Japan School of Electrical and Information Engineering University of Sydney Sydney NSW 2006 Australia

ISBN: (纸本)0780394666

Mobile ad hoc networks (MANET) are usually formed without any major infrastructure. As a result, they are relatively vulnerable to malicious network attacks and therefore the security is a more significant issue than in infrastructure-type wireless networks. In these networks, it is difficult to identify malicious hosts, as the topology of the network changes dynamically. A malicious host can easily interrupt a route for which the malicious host is one of the forming nodes in the communication path. In the literature, there are several proposals to detect such malicious host inside the network. In those methods usually a baseline profile is defined in accordance to static training data and then they are used to verify the identity and the topology of the network, thus avoiding any malicious host to be joined in the network. Since the topology of a MANET is dynamically changing, use of a static profile is not efficient. In this paper, we propose a new intrusion detection scheme based on a learning process, so that the training data can be updated at particular time intervals. The simulation results show the effectiveness of the proposed technique compared to conventional schemes. © 2005 IEEE.

关键词： computer networks

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Quantifying eavesdropping vulnerability in sensor networks 05

Quantifying eavesdropping vulnerability in sensor networks

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2nd international Workshop on Data Management for Sensor networks, DMSN 2005, Held in Conjunction with Very Large Data Bases

作者： Anand, Madhukar Ives, Zachary Lee, Insup Department of Computer and Information Science University of Pennsylvania United States

ISBN: (纸本)1595932062

With respect to security, sensor networks have a number of considerations that separate them from traditional distributed systems. First, sensor devices are typically vulnerable to physical compromise. Second, they have significant power and processing constraints. Third, the most critical security issue is protecting the (statistically derived) aggregate output of the system, even if individual nodes may be compromised. We suggest that these considerations merit a rethinking of traditional security techniques: rather than depending on the resilience of cryptographic techniques, in this paper we develop new techniques to tolerate compromised nodes and to even mislead an adversary. We present our initial work on probabilistically quantifying the security of sensor network protocols, with respect to sensor data distributions and network topologies. Beginning with a taxonomy of attacks based on an adversary's goals, we focus on how to evaluate the vulnerability of sensor network protocols to eavesdropping. Different topologies and aggregation functions provide different probabilistic guarantees about system security, and make different trade-offs in power and accuracy. Copyright 2005 ACM.

关键词： Probability distributions

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A fault localized scheme for false report filtering in sensor networks

A fault localized scheme for false report filtering in senso...

引用

2nd international conference on Pervasive Services, ICPS '05

作者： Zhou, Li Ravishankar, Chinya V. Department of Computer Science and Engineering University of California Riverside Riverside CA 92521 United States

ISBN: (纸本)0780390326

Sensor networks frequently deploy many tiny and inexpensive devices over large regions to detect events of interest. It can be easy to compromise sensors, enabling attackers to use the keys and other information stored at the sensors to inject false reports, forging fake events. Existing approaches do not localize the impact of such node compromises, so that compromises in one sensing region may compromise other parts of the system. In this paper, we propose two fault localized schemes for false report filtering. In our basic scheme, sensors signal events using one-way hash chains, which allows en-route nodes to verify the authenticity of received reports based on commitments of detecting sensors, but prevents them from forging events. We extend this basic scheme to a collaborative filtering scheme using commitment predistribution, making it more adaptable for mobile sensor networks and high-density sensor networks. Our scheme can also provide localized protection for areas that require special protection. Our security analysis shows that our schemes can offer stronger security protection than existing schemes, and are efficient. © 2005 IEEE.

关键词： distributed computer systems

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Off-line micro-payment system for content sharing in P2P networks

引用

2nd international conference on distributed Computing and Internet Technology

作者： Dai, XL Grundy, J Univ S Pacific Dept Math & Comp Sci Suva Fiji Univ Auckland Dept Elect & Comp Engn Auckland 1 New Zealand Univ Auckland Dept Comp Sci Auckland 1 New Zealand

ISBN: (纸本)3540309993

Micro-payment systems have the potential to provide non-intrusive, high-volume and low-cost pay-as-you-use services for a wide variety of web-based applications. We propose an extension, P2P-NetPay, a micro-payment protocol characterized by off-line processing, suitable for peer-to-peer network services sharing. Our approach provides high performance and security using one-way hashing functions for e-coin encryption. In our P2P-NetPay protocol, each peer's transaction does not involve any broker and double spending is detected during the redeeming transaction. We describe the motivation for P2P-NetPay and describe three transactions of the P2P-NetPay protocol in detail to illustrate the approach. We then discuss future research on this protocol.

关键词： Network protocols

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Ubiquitous organizational information service framework for large scale intelligent environments

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作者： Hwang, Kwang-Il Lee, Won-Hee Kim, Seok-Hwan Eom, Doo-Seop Hur, Kyeong Department of Electronics and Computer Engineering Korea University #1-5ga Anam-dong Sungbuk-gu Seoul Korea Republic of Department of Computer Education Gyeongin National University of Education Korea Republic of

ISBN: (纸本)3540308032

In this paper, we introduce a concrete, practical Ubiquitous Organizational Information (UOI) service framework, providing novice users intelligent and useful services with respect to the environment. The UOI framework based on the sensor networks is composed of 3-level hierarchical network architecture. To provide a rich array of services, the modular software framework and foundation software are designed and implemented on our hardware prototype. We define three representative UOI services and illustrate each service flow operating on the proposed UOI network. In addition, we describe some details in the implementation of a distributed UOI network on the UOI test-bed. © IFIP international Federation for Information Processing 2005.

关键词： Embedded systems

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