Wireless sensor networks for environmental monitoring and agricultural applications often face long-range requirements at low bit-rates together with large numbers of nodes. Most existing wireless sensor networks use ...
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ISBN:
(纸本)9781450303446
Wireless sensor networks for environmental monitoring and agricultural applications often face long-range requirements at low bit-rates together with large numbers of nodes. Most existing wireless sensor networks use nodes with a short-range radio and use software protocols to schedule the nodes and co-ordinate multi-hop routing in order to minimise power usage. Nodes have a relatively small radio range up to a few hundred meters that is also affected by the crop growth stage and vegetation density [2]. Disadvantages of this approach include the complexity of software protocols required to co-ordinate the nodes' behaviour and the unreliable nature of the short range radio links that requires sophisticated fault tolerance mechanisms. An alternative design solution is to use low frequency, long-range radios to build a single-hop network of a base station with satellite sensing nodes [4]. this approach has the benefits of much simpler software protocols, and that transmissions in the 40 MHz band are expected to be more reliable in outdoor settings than short range transmission in the 433 MHz or 915 MHz band used by most existing sensor network radios.
As sensor network technologies become more mature, they are increasingly being applied to a wide variety of applications, ranging from agricultural sensing to cattle, oceanic and volcanic monitoring. Significant effor...
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ISBN:
(纸本)9781450303446
As sensor network technologies become more mature, they are increasingly being applied to a wide variety of applications, ranging from agricultural sensing to cattle, oceanic and volcanic monitoring. Significant efforts have been made in deploying and testing sensor networks resulting in unprecedented sensing capabilities. A key challenge has become how to make these emerging wireless sensor networks more sustainable and easier to maintain over increasingly prolonged deployments. In this paper, we report the findings from a one year deployment of an automated wildlife monitoring system for analyzing the social co-location patterns of European badgers (Meles meles) residing in a dense woodland environment. We describe the stages of its evolution cycle, from implementation, deployment and testing, to various iterations of software optimization, followed by hardware enhancements, which in turn triggered the need for further software optimization. We report preliminary descriptive analyses of a subset of the data collected, demonstrating the significant potential our system has to generate new insights into badger behavior. the main lessons learned were: the need to factor in the maintenance costs while designing the system;to look carefully at software and hardware interactions;the importance of a rapid initial prototype deployment (this was key to our success);and the need for continuous interaction with domain scientists which allows for unexpected optimizations. Copyright 2010 acm.
U-City is a city where diverse public information is provided through IT technology. In the past, IT infrastructure for public information was not considered in city planning. However, in recent construction of new ci...
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ISBN:
(纸本)9781450303446
U-City is a city where diverse public information is provided through IT technology. In the past, IT infrastructure for public information was not considered in city planning. However, in recent construction of new cities, this kind of infrastructure is becoming necessary. Safety, transportation, and weather information are gathered and provided to residents through the Internet, mobile devices, etc [1]. To provide this kind of information, local governments operates U-City control center, and there is an issue of increased operating cost of the city. To solve this problem, U-City business platform is designed which can incorporate diverse commercial services. Different from public information platform, a private sector can participate and provide services. this work suggests Business Service Platform (BSP) system structure where USN-based services can be provided in U-City business platform. then, USN-based service applications are introduced on U-City platform. Business Service Platform (BSP) is a service platform of U-City for services in a private sector, and provides overall functionalities required for the creation, distribution, and billing. A service provider for U-City can develop a new application using BSP. It can also register, distribute, and handle billing using functionalities of BSP. BSP started with a target advertisement service related to public transportation information as its initial service, however USN technology in diverse areas are expected to be applied to BSP in the future. To apply such diverse USN to BSP, a general framework should be provided to integrate USN, and a system is needed that each service provider can control. In this demo, we will explain U-City service platform, which will be deployed at CHEONGRA zone of Korea, and how it is integrated to USN to provide healthcare, smart grid services, and finally major system components.
the proceedings contain 128 papers. the topics discussed include: when do cooperative networks profit from CSI feedback? - an outage capacity perspective;the TASEP: a statistical mechanics tool to study the performanc...
ISBN:
(纸本)9781424471164
the proceedings contain 128 papers. the topics discussed include: when do cooperative networks profit from CSI feedback? - an outage capacity perspective;the TASEP: a statistical mechanics tool to study the performance of wireless line networks;on the goodput of TCP NewReno in mobile networks;designing data center networks using analytic hierarchy process;supply and demand coordination in energy adaptive computing;network bandwidth optimization of Ethernet-based streaming applications in automotive embeddedsystems;on communication determinism in parallel hpc applications;challenges for high-performance networking for Exascale computing;practical network coding with resilient subspace codes;and analysis of energy consumption on data sharing in beamforming for wireless sensor networks.
A middleware is a piece of software which resides between the main application and the physical infrastructure. Middleware processes the data coming from the physical sensor network and make them available to applicat...
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this demonstration shows our versatile heterogeneous sensor networks testbed. this testbed supports high speed embedded WLAN node, medium speed IEEE802.15.4 node, wired computer and so on with powerful supervision pla...
ISBN:
(纸本)9781450303446
this demonstration shows our versatile heterogeneous sensor networks testbed. this testbed supports high speed embedded WLAN node, medium speed IEEE802.15.4 node, wired computer and so on with powerful supervision platform. the unique features of the testbed are as follows: (1) Supporting heterogeneous sensor networks; (2) Owning powerful testbed nodes; (3) Emulating the interference and noise withthe USRP2 replaying the real signal.
Existing sensor network simulators are not appropriate for indoor sensor network systems. We present RealSSim, the sensor network simulator especially developed for indoor sensor networks. RealSSim considers the struc...
ISBN:
(纸本)9781450303446
Existing sensor network simulators are not appropriate for indoor sensor network systems. We present RealSSim, the sensor network simulator especially developed for indoor sensor networks. RealSSim considers the structure of buildings and the quality of construction materials for accurate radio propagation analysis. It also supports an attractive visualization of the level as commercial products. In our demonstration, we show the whole process of simulation for two indoor sensor network systems.
Withthe advancement of the sensor network technology and cyber physical systems [2], the merging between the virtual cyber space and the real physical world is bound to happen, which will impact the lifestyle of the ...
ISBN:
(纸本)9781450303446
Withthe advancement of the sensor network technology and cyber physical systems [2], the merging between the virtual cyber space and the real physical world is bound to happen, which will impact the lifestyle of the human being. the metropolitan area sensor networks, composed of millions of heterogeneous sensors and penetrating every aspect of the city life, provide gigantic amount of real-time information of the city, which makes it possible to reconstruct the real world in an on-line cyber space.
An increasing number of sensor networks have been deployed to monitor a variety of conditions and situations. At the same time, more and more applications are starting to rely on the data from sensor networks to provi...
ISBN:
(纸本)9781450303446
An increasing number of sensor networks have been deployed to monitor a variety of conditions and situations. At the same time, more and more applications are starting to rely on the data from sensor networks to provide users with (near) real-time information and conditions. this increasing demand of users for accurate information about natural and surrounding phoenomena is creating a business case for application providers.
this poster presents an innovative dual-mode medium access control scheme that combines the ultra low power MAC protocol WiseMAC withthe wireless sensor networking standard IEEE 802.15.4. Each network device can inde...
ISBN:
(纸本)9781450303446
this poster presents an innovative dual-mode medium access control scheme that combines the ultra low power MAC protocol WiseMAC withthe wireless sensor networking standard IEEE 802.15.4. Each network device can independently and autonomously switch between the two modes depending on its residual energy resources and the current application traffic. We observe that this approach can reduce the power consumption and the average latency by almost two orders of magnitude.
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