International Conference on Wireless Technologies for Humanitarian Relief最新文献_第6页

Bayesian data and channel joint maximum-likelihood based error correction in wireless sensor networks 基于贝叶斯数据和信道联合最大似然的无线传感器网络误差校正

International Conference on Wireless Technologies for Humanitarian Relief Pub Date : 2011-12-18 DOI: 10.1145/2185216.2185261

A. Katiyar, A. Jagannatham

引用次数: 0

Reaching out with wireless 通过无线网络进行接触

International Conference on Wireless Technologies for Humanitarian Relief Pub Date : 2011-12-18 DOI: 10.1145/2185216.2185237

Upamanyu Madhow

{"title":"Reaching out with wireless","authors":"Upamanyu Madhow","doi":"10.1145/2185216.2185237","DOIUrl":"https://doi.org/10.1145/2185216.2185237","url":null,"abstract":"The application of wireless for humanitarian relief can be greatly enhanced by circumventing the range limitations of current technologies, without requiring bulky transceivers with very large antennas. In this talk, we discuss two broad approaches to this problem, and give some preliminary results that illustrate the promise of these approaches. The first approach is the use of distributed antenna arrays using cooperation among neighboring nodes. Promising results over the past few years, both in terms of theory and prototyping, indicate that such distributed arrays have the potential of providing order of magnitude range improvements, along with enhanced spatial reuse. Such distributed arrays are easy to set up and tear down, since they can be realized with nodes with compact form factor, and allow operation over large carrier wavelengths (for which conventional centralized antenna arrays would be too bulky), thus significantly enhancing propagation. The second approach is the use of autonomous mobile agents such as Unmanned Aerial Vehicles (UAV) as an integral part of the sensing and communications infrastructure., which can, providing connectivity in disconnected networks and for tracking survivors using radio frequency (RF) beacons. We discuss promising recent results on providing adaptive UAV-based data collection and processing for disconnected sensor networks, and on robust algorithms for following RF beacons despite large spatial fades (which apply, for example, for tracking survivors in a disaster situation).","PeriodicalId":180836,"journal":{"name":"International Conference on Wireless Technologies for Humanitarian Relief","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123298889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monitoring Schumann resonance and other electromagnetic precursors of an earthquake with a virtual MIMO wireless sensor network 利用虚拟MIMO无线传感器网络监测舒曼共振和其他地震电磁前兆

International Conference on Wireless Technologies for Humanitarian Relief Pub Date : 2011-12-18 DOI: 10.1145/2185216.2185290

Weidong Yi, Lanbo Liu

{"title":"Monitoring Schumann resonance and other electromagnetic precursors of an earthquake with a virtual MIMO wireless sensor network","authors":"Weidong Yi, Lanbo Liu","doi":"10.1145/2185216.2185290","DOIUrl":"https://doi.org/10.1145/2185216.2185290","url":null,"abstract":"The frequency shift and amplitude change in Schumann resonance (SR) as a precursor of some moderate to strong earthquakes was observed and reported. Co-seismic SR variation could be occurring at even large magnitude and scale. In this study, we first model Schumann resonance associated with the occurrence of an earthquake and assess the SR variation recorded from an earth-based sensor network. Based on the computer simulation results, we then propose a wireless observation system to monitor SR as a potential precursor prior to an earthquake using a wireless sensor network (WSN). A WSN based on single antenna wireless sensor nodes are cooperated to establish a multiple-antenna WSN that is called virtual MIMO-WSN. Virtual MIMO-WSN is adjustable and tunable to monitor electromagnetic signals in different frequencies based on the number of the cooperative wireless sensor nodes. An electromagnetic map could then be generated by activating a virtual MIMO-WSN in specific direction by switching on/off certain sensor nodes based on their location (also known as beamforming). Cost effectiveness, system scalability, ease of deployment, adjustability in frequency tuning, and reliability in ELF/VLF direction-finding are the key design factors in virtual MIMO-WSN to overcome the bottlenecks in the existing techniques for ELF/VLF monitoring systems. Simulation results are used to evaluate these quality indices of the proposed virtual MIMO-WSN.","PeriodicalId":180836,"journal":{"name":"International Conference on Wireless Technologies for Humanitarian Relief","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114190330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Numerical simulation of UWB impulse radar vital signal detection at an earthquake disaster site 地震灾害现场超宽带脉冲雷达生命信号探测的数值模拟

International Conference on Wireless Technologies for Humanitarian Relief Pub Date : 2011-12-18 DOI: 10.1145/2185216.2185291

Lanbo Liu, Hao Xie, Zijian Liu, A. Bagtzoglou, B. Barrowes, Antonio M. Vincitore

引用次数: 2

Content delivery through the ages: Akamai to WebCloud 内容交付:Akamai到WebCloud

International Conference on Wireless Technologies for Humanitarian Relief Pub Date : 2011-12-18 DOI: 10.1145/2185216.2185266

Ravi Sundaram

引用次数: 0

Prioritizing data in emergency response based on context, message content and role 根据上下文、消息内容和作用对应急响应中的数据进行优先排序

International Conference on Wireless Technologies for Humanitarian Relief Pub Date : 2011-12-18 DOI: 10.1145/2185216.2185244

Faisal B. Luqman, Feng-Tso Sun, Heng-Tze Cheng, S. Buthpitiya, M. Griss

引用次数: 14

Robust RF fingerprinting techniques in 4G networks 4G网络中健壮的射频指纹识别技术

International Conference on Wireless Technologies for Humanitarian Relief Pub Date : 2011-12-18 DOI: 10.1145/2185216.2185275

Dongwoon Hahn, A. Agrawala

引用次数: 0

30 years of ad hoc networking research: what about humanitarian and disaster relief solutions? what are we still missing? 30年的特设网络研究:人道主义和救灾解决方案如何?我们还缺少什么?

International Conference on Wireless Technologies for Humanitarian Relief Pub Date : 2011-12-18 DOI: 10.1145/2185216.2185279

F. Legendre

{"title":"30 years of ad hoc networking research: what about humanitarian and disaster relief solutions? what are we still missing?","authors":"F. Legendre","doi":"10.1145/2185216.2185279","DOIUrl":"https://doi.org/10.1145/2185216.2185279","url":null,"abstract":"In this invited talk, we will start by surveying the research works conducted during the last 30 years on wireless networking technologies from ad hoc, mesh to delay-tolerant opportunistic networks. We present how these networking technology may be applied to uphold communications in the event of a disaster where the communication infrastructure can be wiped-out (earthquakes, floods), overloaded (surge of traffic and flash crowds) or not existing in the first place (developing countries). We summarize the advantages and disadvantages of each unique approach, how they can be combined together (and with legacy systems), and focus on recent advances in the field. In a second part we will present, Twimight, our Twitter application relying on opportunistic communications to spread tweets and sensor data in an epidemic fashion. Twimight is an open source Twitter client for Android phones featured with a \"disaster mode\", which users enable upon losing connectivity. In the disaster mode, tweets are not sent to the online Twitter servers but stored on the phone, carried around as people move, and forwarded opportunistically via Bluetooth or WiFi Direct when in proximity with other smartphones.\u0000 We will demonstrate how opportunistic technologies such as Twimight can be of great value right after a disaster by enabling the self-organization of victims and a better coordination with first rescue organizations. Eventually, we will conclude with the main challenges still to overcome and provide directions for future research in this emerging field from protocol and system design to security and data privacy. We will stress the need for cross-disciplinary approaches to better understand the psychology of distressed victims and their interaction with innovative communication technologies.","PeriodicalId":180836,"journal":{"name":"International Conference on Wireless Technologies for Humanitarian Relief","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115066020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 39

Heterogeneity and multi-cell cooperation in wireless cellular networks 无线蜂窝网络的异构性和多蜂窝合作

International Conference on Wireless Technologies for Humanitarian Relief Pub Date : 2011-12-18 DOI: 10.1145/2185216.2185218

N. Sindhushayana

{"title":"Heterogeneity and multi-cell cooperation in wireless cellular networks","authors":"N. Sindhushayana","doi":"10.1145/2185216.2185218","DOIUrl":"https://doi.org/10.1145/2185216.2185218","url":null,"abstract":"The performance of most urban cellular networks is limited by inter-cell interference. This is particularly true of a cellular network with heterogeneous infrastructure, wherein the same spectrum is shared by different types of base-stations such as macro-cells, pico-cells, femto-cells and relays. Performance of such dense/heterogeneous deployments may be greatly enhanced through the use of smart association techniques, coupled with adaptive interference management. Unlike traditional cellular systems where association is predominantly based on maximizing signal quality between the base-station and the user, a smart association scheme in a heterogeneous network should be based on several additional criteria such as aggressive load-balancing, path-loss minimization, or minimization of interference to other links. Aggressive load-balancing (in particular) requires advanced interference management, which can may be realized through (soft) resource partitioning, beam-coordination or joint signal processing at the base-stations. Multi-cell signal processing (or distributed MIMO) can be used in homogeneous networks as well, in order to mitigate inter-cell interference without compromising degrees of freedom associated with the transmit signals. In this tutorial, we demonstrate how these techniques may be incorporated into the design of a cellular system, and the performance gains resulting from such a system design.","PeriodicalId":180836,"journal":{"name":"International Conference on Wireless Technologies for Humanitarian Relief","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115482030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Business-management-inspired sensor data fusion 业务管理启发的传感器数据融合

International Conference on Wireless Technologies for Humanitarian Relief Pub Date : 2011-12-18 DOI: 10.1145/2185216.2185271

V. Köppen, Maik Mory, André Dietrich, S. Zug

引用次数: 0