The proceedings contain 57 paper. The topics discussed include: saturated throughput analysis of ieee 802.11e using two-dimensional Markov chain model;localized coverage boundary detection for wireless sensor networks...
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ISBN:
(纸本)1595935371
The proceedings contain 57 paper. The topics discussed include: saturated throughput analysis of ieee 802.11e using two-dimensional Markov chain model;localized coverage boundary detection for wireless sensor networks;algorithm design for base station placement problems in sensor networks;distributed cooperative rate adaptation for energy efficiency in ieee 802.11-based multi-hop networks;multi-constrained soft-QoS provisioning in wireless sensor networks;clustering and load balancing in hybrid sensor networks with mobile cluster heads;a link performance model for multi-user wireless fading channels;an optimization framework for balancing throughput and fairness in wireless networks with QoS support;energy-balancing multipath routing protocol for wireless sensor networks;cluster-based routing protocol for mobile sensor networks;and stability-based multi-objective clustering in mobile ad hoc networks.
Pervasive computing research has highlighted a need for location systems and input devices that are easy to deploy ubiquitously, are inexpensive, reliable, and practically invisible. This paper describes a novel track...
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ISBN:
(纸本)9780780397910
Pervasive computing research has highlighted a need for location systems and input devices that are easy to deploy ubiquitously, are inexpensive, reliable, and practically invisible. This paper describes a novel tracking platform that attempts to meet all of these goals. The system exploits the static charge that naturally accumulates with movement through typical environments to create an inexpensive system that has potential both as a passive location system and as an input device. We demonstrate the physical principles, develop hardware and software to reliably detect interactions, and extensively evaluate a prototype implementation. We find the prototype to have a low false negative rate and a zero false positive rate. The power draw lies in the milliwatt-range and the cost per room is significantly lower than comparable systems.
In this paper, a general combinatorial Ant System-based distributed algorithm modeled like a dynamic optimization problem is presented. In the proposed algorithm, the solution space of the dynamic combinatorial optimi...
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ISBN:
(纸本)9789806560833
In this paper, a general combinatorial Ant System-based distributed algorithm modeled like a dynamic optimization problem is presented. In the proposed algorithm, the solution space of the dynamic combinatorial optimization problem is mapped into the space where the ants will walk, and the transition probability and the pheromone update formula of the ant system are defined according to the objective function of the communication problem. We test and compare the performance of our routing algorithm against well-known routing schemes for wireless sensor networks and via simulations show that it consumes less energy per packet and extends the lifetime of the network.
In this paper we present PACE - a Probabilistic Ant based Clustering Algorithm for distributed databases. This algorithm is based on the well-known swarm based approach to clustering. Its characteristic feature is the...
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ISBN:
(纸本)9781424401956
In this paper we present PACE - a Probabilistic Ant based Clustering Algorithm for distributed databases. This algorithm is based on the well-known swarm based approach to clustering. Its characteristic feature is the formation of numerous zones in various distributed sites based on the user query to the distributed database. Keywords, extracted out of the query, are used to assign a range of values according to their corresponding probability of occurrence or hit ratio at each site. An Ant Odor Identification Model is used as a preceding step to the colony building and formation of clusters inside the zones. Reordering or sorting of the heap trees formed by the ants to enable agglomeration of only the most probable data forms the crux of this algorithm. Experimental results are reported showing the comparison of PACE with other existing clustering algorithms.
The problem of topology configuration and its control of a wireless sensor network (WSN) are dealt with in this paper. Topology algorithm of a wireless sensor network aims to minimize the energy consumption and increa...
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In future, lightpaths will be dynamically provided to users by the use of GMPLS but lightpath networks may be overlaid to the users. When the users want to find idle wavelengths by probing for lightpath provisioning, ...
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ISBN:
(纸本)9781424404247
In future, lightpaths will be dynamically provided to users by the use of GMPLS but lightpath networks may be overlaid to the users. When the users want to find idle wavelengths by probing for lightpath provisioning, they may not be able to obtain information about all the idle wavelengths along the route in the overlaid lightpath net-work. They are only allowed to include a limited number of wavelengths for probing. In order to avoid wavelength contention and reduce blocking probability, we present a. method for performance estimation of overlaid lightpath networks from a user side. In this method, we try to find wavelengths that are likely to be idle. This is done by the wavelength based rank accounting for each pair of a source and a destination. Rank is calculated each time a lightpath is provisioned at a pair regardless of the success or failure of the provisioning. We demonstrate that the method of estimation is effective through simulation experiments and also present an initial implementation of a lightpath-provisioning system that uses our performance estimation method based on the GMPLS RSVP-TE mechanism.
Efficient supply chains should be responsive to demand surges and supply disruptions resulting from internal and external vulnerabilities. Firms can respond to vulnerabilities by either, reallocating and redirecting e...
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The nature of Grid and distributedcomputing implies communication between heterogeneous systems over a wide and ever-changing variety of network environments. Often large amounts of data are stored in remote location...
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ISBN:
(纸本)9781424404247
The nature of Grid and distributedcomputing implies communication between heterogeneous systems over a wide and ever-changing variety of network environments. Often large amounts of data are stored in remote locations and must be transmitted in bulk. It is desirable to have the bulk data transfers be as fast as possible;however, because of the dynamic networks involved, it is often hard to predict what protocol will provide the fastest service for a given situation. In this paper we present XIOPerf, a network protocol testing and evaluation tool. XIOPerf is a command line program written on top of Globus XIO with a simple and well-defined interface to many different protocol implementations. XIOPerf was created to give users a way to quickly and easily experiment with an open-ended set of protocols over real networks to determine which will best suit their needs. We present a brief study of the overhead introduced by XIOPerf and the performance when using a variety of protocols.
In this paper, we study coverage with connectivity properties in large wireless sensor networks. We consider three classes: full coverage with connectivity, partial coverage with connectivity, and constrained coverage...
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ISBN:
(纸本)9781424404247
In this paper, we study coverage with connectivity properties in large wireless sensor networks. We consider three classes: full coverage with connectivity, partial coverage with connectivity, and constrained coverage with connectivity. We outline two simple network topologies to satisfy the constrained coverage with connectivity criterion. We compare the surveillance performance and deployment cost for networks with different coverage with connectivity criteria. Together, they cover a whole spectrum of surveillance quality in wireless sensor networks at different cost. We outline potential research topics in the area.
Wireless sensor-actuator networks (SANETs), in which nodes perform actions (actuation) in response to sensor measurements and shared information, have great potential in medical and agricultural applications. In this ...
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ISBN:
(纸本)9781424404988
Wireless sensor-actuator networks (SANETs), in which nodes perform actions (actuation) in response to sensor measurements and shared information, have great potential in medical and agricultural applications. In this paper, we focus on the problem of using distributed sensed data to design actuation strategies in order to elicit a desired response from the environment, whilst attempting to minimize the communication in the network. Our methodology is based on batch Q-learning;we describe a distributed approach for learning dyadic regression trees to estimate the Q-functions from collected data. Analysis and simulation indicate that substantial communication savings that can be achieved through distributed learning without significant performance deterioration. The simulations also reveal that the performance of our technique depends strongly on the amount of training data available.
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