In this paper we propose a range-free cooperative localization algorithm for mobile sensor networks by combining hop distance measurements and particle filtering. In the hop distance measurement step, a differential e...
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ISBN:
(纸本)9780769534923
In this paper we propose a range-free cooperative localization algorithm for mobile sensor networks by combining hop distance measurements and particle filtering. In the hop distance measurement step, a differential error correction scheme is devised to reduce the positioning error accumulated over multiple hops. A backoff-based broadcast mechanism is also introduced in our localization algorithm. It efficiently suppresses redundant broadcasts and reduces message overhead. the proposed localization method has fast converges with small location estimation error We verify, our algorithm in various scenarios and compare it with conventional localization methods. Simulation results show, that our proposal is superior to the state-of-the-art localization algorithms for mobile sensor networks.
Distinguishing withthe radio frequency (RF) communication for the terrestrial wireless sensor networks, of acoustic communication in under water peculiarity of environment causes many issues of energy consumption, pr...
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ISBN:
(纸本)9780769534923
Distinguishing withthe radio frequency (RF) communication for the terrestrial wireless sensor networks, of acoustic communication in under water peculiarity of environment causes many issues of energy consumption, propagation delay, time synchronization and other factors when designing the sensor network. the AM C protocol, which plays an important role of managing and controlling the channels, should overcome these requirements in the Underwater Acoustic sensor Networks (UWASNs). In this paper, we proposed a new MAC protocol called Adaptive Energy Reservation MAC (AER-MAC) protocol which exploits the transmission signal strength related to a distance concept in A order to make the network transmission schedule. Since, the underwater acoustic communication channels are characterized by a path loss and absorption loss that depend on the distance between the transmitter and receiver. therefore, a sensor node can send a reservation packet with a power value in which other nodes in the calculation range can receipt this packet.
Many studies on sensor network have focused on energy efficiency in several layers on communication protocol. In order to increase energy efficiency in sensor network communication, MAC-layer energy efficiency needs t...
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ISBN:
(纸本)9780769534923
Many studies on sensor network have focused on energy efficiency in several layers on communication protocol. In order to increase energy efficiency in sensor network communication, MAC-layer energy efficiency needs to be considered. Even though MAC layer protocols for increasing energy, efficiency at MAC layer have been proposed in several papers, there have been few of researches that focused oil energy efficiency methods in which transmission power is considered. In this paper we propose a new mechanism named as ELM-MAC that creates, uses, and manages the optimized transmission power level for energy efficiency in MAC layer.
sensor webs consist of a large collection of small nodes providing collaborative and distributed sensing ability in unpredictable environments. Nodes composing such sensor webs, are characterized by their resource res...
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ISBN:
(纸本)9781605580463
sensor webs consist of a large collection of small nodes providing collaborative and distributed sensing ability in unpredictable environments. Nodes composing such sensor webs, are characterized by their resource restrictions, especially the energy, the processing, and the communication capacities. these nodes are also in constant interaction with each other and withtheir geographic environment. An efficient system aiming at managing sensor webs must take into account the evolution of the sensor nodes as well as the geographic environment. Such a management process involves coping with a variety of dynamic variables including the nodes characteristics, the environment properties as well as the sensed data. In this context, Multi-Agent Geo-Simulation (MAGS) provides a flexible approach that can be used to easily analyse complex systems such as sensor webs in large scale georeferenced environments. the purpose of this paper is to present sensorMAGS, an agent-based geo-simulation system which manages sensor nodes in virtual geographic environments. this system is applied in the context of a water resource monitoring project. Copyright 2008 ACM.
On developing prototype,;of multisensor surveillance systems, It Is necessary to apply various types or statistical and numerical computing algorithms in analyzing sensor data. In addition, most of the algorithm imple...
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ISBN:
(纸本)9784907764319
On developing prototype,;of multisensor surveillance systems, It Is necessary to apply various types or statistical and numerical computing algorithms in analyzing sensor data. In addition, most of the algorithm implementation includes complex, numerical computing processes. Hence, implementing and applying various algorithms are tiresome tasks by application developers. To save time and manpower on creating the prototypes, we have been developing sensorD/Stat, an extension of sensor-Event-Driven Service Coordination Middleware (sensorD). In the sensorD/Stat system, sensorD cooperatively works with R, which Is an open source statistical computing and graphic environment. Using both spatio-temporal sensor data management of sensorD and statistical and numerical analyses of R, developers can rapidly create prototypes of indoor multisensor surveillance systems. In this paper, we show the outline of sensorD/Stat and a prototype of a room temperature monitoring system as a preliminary result of sensorD/Stat.
To extend the lifetime of wireless sensor networks a power-aware design of the communication units is required. this can be accomplished by employing power-controllable impulse radio ultra-wideband (IR-UWB) transceive...
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ISBN:
(纸本)9781424424887
To extend the lifetime of wireless sensor networks a power-aware design of the communication units is required. this can be accomplished by employing power-controllable impulse radio ultra-wideband (IR-UWB) transceivers. In this paper, two distributed power control algorithms are suggested that are based on a variation of IR-UWB specific parameters. the iterative algorithms converge to the optimal transmit power levels for all nodes of a given network topology. the global transmission power can be further reduced by the construction of a network hierarchy. For this purpose a topology control algorithm is proposed that can be combined withthe power control procedures. this combination realises an efficient application specific multiple access scheme for IR-UWB sensor networks.
We propose a distributed source coding system for data collected by sensor networks. It uses a feedback channel between the sensors and the gateway node (i.e., the joint decoder) but, unlike previous systems, the enco...
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ISBN:
(纸本)9781424417650
We propose a distributed source coding system for data collected by sensor networks. It uses a feedback channel between the sensors and the gateway node (i.e., the joint decoder) but, unlike previous systems, the encoding process is driven by the decoder. Compression is performed using distributed arithmetic coding, which is extended to adaptively estimate the source probabilities. Specifically, the decoder estimates marginal and conditional probabilities, and sends them back to the sensors to drive the distributed arithmetic coding process. this reduces the decoding delay, and potentially eliminates the need of rate-compatible Slepian-Wolf codes.
In sensor networks, sensors are prone to be compromised by attackers because they are deployed in an unattended environment. then, attackers can employ the keys of the compromised sensors to uncover the sensor reading...
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ISBN:
(纸本)9780769534923
In sensor networks, sensors are prone to be compromised by attackers because they are deployed in an unattended environment. then, attackers can employ the keys of the compromised sensors to uncover the sensor readings and even modify them to lead an unsuitable decision of the user. To resolve the problem, it is important to refresh communication keys of sensors in a periodic or on-demand manner. In this paper, we propose a key refreshment scheme which is immune to the increase of the compromised nodes. In our scheme, each member in a cluster uses a pairwise key which is different from those of other members, so the compromise of a sensor reveals no transmissions from other members. Besides, our scheme explicitly evicts the compromised sensors by virtue of periodic cluster reformations. Simulation results showed that our scheme is more tolerant to the compromised sensors while it is more energy-efficient than SHELL.
Contour maps, showing topological distribution of extracted features, are crucial for many applications. Building a dynamic contour map in a wireless sensor network is a challenging task due to the constrained network...
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Nodes in a sensor network, operating on power limited batteries, must save power to minimize the need for battery replacement. In this paper, we study the power efficiency issues related to geographic broadcast protoc...
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ISBN:
(纸本)9781424425747
Nodes in a sensor network, operating on power limited batteries, must save power to minimize the need for battery replacement. In this paper, we study the power efficiency issues related to geographic broadcast protocols in wireless sensor networks. Specifically, we study the problems in existing flooding based and pruning based broadcast algorithm and propose a new Geographic Power Efficient Broadcast algorithm to reduce the overlaps of broadcast coverage area and thus the total power consumption. the proposed algorithm is a hybrid protocol that combines broadcasts of maximum transmission radio range and forwards of much smaller transmission radio range. through simulation, we show that the GPEB protocol proposed in this paper can save total power consumption up to 23% compared to existing geographic broadcast protocols.
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