scholarly journals Cognitive Scout Node for Communication in Disaster Scenarios

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Rajesh K. Sharma ◽  
Anastasia Lavrenko ◽  
Dirk Kolb ◽  
Reiner S. Thomä
Keyword(s):  
Situation Awareness ◽  
Access Point ◽  
Base Station ◽  
Surveillance Systems ◽  
Processing Unit ◽  
Leading Role ◽  
Primary Network ◽  
Disaster Situation ◽  
Disaster Scenario ◽  
New Applications

The cognitive radio (CR) concept has appeared as a promising technology to cope with the spectrum scarcity caused by increased spectrum demand due to the emergence of new applications. CR can be an appropriate mean to establish self-organization and situation awareness at the radio interface, which is highly desired to manage unexpected situations that may happen in a disaster scenario. The scout node proposed in this paper is an extended concept based on a powerful CR node in a heterogeneous nodes environment which takes a leading role for highly flexible, fast, and robust establishment of cooperative wireless links in a disaster situation. This node should have two components: one is a passive sensor unit that collects and stores the technical knowledge about the electromagnetic environment in a data processing unit so-called “radio environment map” in the form of a dynamically updated database, and other is an active transceiver unit which can automatically be configured either as a secondary node for opportunistic communication or as a cooperative base station or access point for primary network in emergency communications. Scout solution can be viable by taking advantage of the technologies used by existing radio surveillance systems in the context of CR.

scholarly journals Enhancing Mobile Military Surveillance Based on Video Streaming by Employing Software Defined Networks

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Iulisloi Zacarias ◽  
Janaína Schwarzrock ◽  
Luciano P. Gaspary ◽  
Andersonn Kohl ◽  
Ricardo Q. A. Fernandes ◽  
...  
Keyword(s):  
Video Streaming ◽  
Situation Awareness ◽  
Mobile Networks ◽  
Image Transmission ◽  
Surveillance Systems ◽  
High Quality ◽  
Quality Video ◽  
Military Systems ◽  
Streaming Service ◽  
High Quality Video

Situation awareness in surveillance systems benefits from high-quality video streaming service. This is even more important considering military systems, in which delays in image transmission may have a significant impact on the decision-making process. However, in order to deliver high-quality video streaming service, the required network infrastructure may be prohibitively complex, or even completely impossible to deploy, if mobile data providers are considered. Moreover, the demand for high network throughput poses extra requirements on the network. Considering this context, this paper addresses the problem of highly mobile networks composed of unmanned aerial vehicles (UAVs) as data providers of a military surveillance system. The proposed approach to tackle the problem is based on a Software Defined Networking (SDN) approach aiming at providing the best routes to deliver the data, enhancing the end-user quality of experience. An extensive experimental campaign was performed by means of simulations and the acquired results provide solid evidence of the usefulness of this proposal.

AMC-Loaded Wideband Base Station Antenna for Indoor Access Point in MIMO System

2015 ◽  
Vol 63 (2) ◽  
pp. 525-533 ◽  
Author(s):  
Guihong Li ◽  
Huiqing Zhai ◽  
Long Li ◽  
Changhong Liang ◽  
Rongdao Yu ◽  
...  
Keyword(s):  
Mimo System ◽  
Access Point ◽  
Base Station

Citizen-to-Citizen Resource Sharing in Emergency Response

Crowdsourcing ◽  
2019 ◽  
pp. 578-605
Author(s):  
Soon Ae Chun ◽  
Jaideep S. Vaidya ◽  
Vijayalakshmi Atluri ◽  
Basit Shafiq ◽  
Nabil R. Adam
Keyword(s):  
Citizen Participation ◽  
Emergency Response ◽  
Situation Awareness ◽  
Resource Sharing ◽  
Large Scale ◽  
Situational Awareness ◽  
Government Agencies ◽  
Mobile Crowdsourcing ◽  
Disaster Situation ◽  
The Government

During large-scale manmade or natural disasters, such as Superstorm Sandy and Hurricanes Harvey and Irma, collaborations among government agencies, NGOs, and businesses need to be coordinated to provide necessary resources to respond to emergency events. However, resources from citizens themselves are underutilized, such as their equipment or expertise. The citizen participation via social media enhanced the situational awareness, but the response management is still mainly handled by the government or government-sanctioned partners. By harnessing the power of citizen crowdsourcing, government agencies can create enhanced disaster situation awareness and facilitate effective utilization of resources provided by citizen volunteers, resulting in more effective disaster responses. This chapter presents a public engagement in emergency response (PEER) framework that provides an online and mobile crowdsourcing platform for incident reporting and citizens' resource volunteering as well as an intelligent recommender system to match-make citizen resources with emergency tasks.

Citizen-to-Citizen Resource Sharing in Emergency Response

2018 ◽  
pp. 130-164 ◽  
Author(s):  
Soon Ae Chun ◽  
Jaideep S. Vaidya ◽  
Vijayalakshmi Atluri ◽  
Basit Shafiq ◽  
Nabil R. Adam
Keyword(s):  
Citizen Participation ◽  
Emergency Response ◽  
Situation Awareness ◽  
Resource Sharing ◽  
Large Scale ◽  
Situational Awareness ◽  
Government Agencies ◽  
Mobile Crowdsourcing ◽  
Disaster Situation ◽  
The Government

During large-scale manmade or natural disasters, such as Superstorm Sandy and Hurricanes Harvey and Irma, collaborations among government agencies, NGOs, and businesses need to be coordinated to provide necessary resources to respond to emergency events. However, resources from citizens themselves are underutilized, such as their equipment or expertise. The citizen participation via social media enhanced the situational awareness, but the response management is still mainly handled by the government or government-sanctioned partners. By harnessing the power of citizen crowdsourcing, government agencies can create enhanced disaster situation awareness and facilitate effective utilization of resources provided by citizen volunteers, resulting in more effective disaster responses. This chapter presents a public engagement in emergency response (PEER) framework that provides an online and mobile crowdsourcing platform for incident reporting and citizens' resource volunteering as well as an intelligent recommender system to match-make citizen resources with emergency tasks.

Cooperative Communication System Architectures for Cellular Networks

2010 ◽  
pp. 522-547
Author(s):  
Mischa Dohler ◽  
Djamal-Eddine Meddour ◽  
Sidi-Mohammed Senouci ◽  
Hassnaa Moustafa
Keyword(s):  
Business Models ◽  
Access Point ◽  
Cooperative Networks ◽  
Base Station ◽  
System Architectures ◽  
Data Rates ◽  
Promising Solution ◽  
Coverage Problems ◽  
The Cost

An ever-growing demand for higher data-rates has facilitated the growth of wireless networks in the past decades. These networks, however, are known to exhibit capacity and coverage problems, hence jeopardizing the promised quality of service towards the end-user. To overcome these problems, prohibitive investment costs in terms of base station or access point rollouts would be required if traditional, non-scalable, cell-splitting, and micro-cell capacity dimension procedures were applied. The prime aim of current R&D initiatives is, hence, to develop innovative network solutions that decrease the cost per bit/s/Hz over the wireless link. To this end, cooperative networks have emerged as an efficient and promising solution. We discuss in this chapter some key research and deployment issues, with emphasis on cooperative architectures, networking, and security solutions. We expose some motivations to use such networks, as well as latest state-of-the-art developments, open research challenges, and business models.

scholarly journals Post Disaster Situation Awareness and Decision Support Through Interactive Crowdsourcing

2016 ◽  
Vol 159 ◽  
pp. 167-173 ◽  
Author(s):  
Moumita Basu ◽  
Somprakash Bandyopadhyay ◽  
Saptarshi Ghosh
Keyword(s):  
Decision Support ◽  
Situation Awareness ◽  
Disaster Situation ◽  
Post Disaster

Performance Improvement of MU-MIMO System by Optimizing the K-Factor for the K-Mean User Grouping Algorithm

2016 ◽  
Vol 5 (3) ◽  
pp. 89
Author(s):  
Ankush Kansal ◽  
Pawandeep Singh
Keyword(s):  
Mimo System ◽  
Access Point ◽  
Base Station ◽  
Optimum Number ◽  
Multiuser Mimo ◽  
User Grouping ◽  
Single Antenna ◽  
User Groups ◽  
Sum Rate ◽  
Grouping Algorithm

<p>In this paper, downlink multiuser-MIMO system with large number of transmitting antennas at the base station and R user terminals each having single antenna is considered. According to this design, an access point communicates with large number of users in the Rayleigh fading scenario. Due to large number of users, it becomes difficult to accommodate all of them in the system simultaneously. So, a user grouping technique known as K-mean clustering is used, such that a group of users with similar conditions at that particular time are served together. While making groups, the interference is surely reduced but the number of users being served at a time also reduces. So, it is necessary to make out the balance such that the performance of the system is maintained while accommodating maximum number of users. So, optimum number of user groups needs to be formed. The results show that when groups are increased from two till four sum rate increases but when five groups are made the sum rate decreases to a point but, is still higher than two groups.</p><p> </p>

HomCam

2016 ◽  
Vol 60 (1) ◽  
pp. 800-804 ◽  
Author(s):  
Brian Peck ◽  
Stephen Gilbert ◽  
Eliot Winer ◽  
Robert C. Ray
Keyword(s):  
Real Time ◽  
Situation Awareness ◽  
Network Performance ◽  
Situational Awareness ◽  
Visual Display ◽  
Initial Test ◽  
Video System ◽  
Wearable Technologies ◽  
Remote Location ◽  
New Applications

The growth of mobile and wearable technologies has enabled a host of new applications, including remote situational awareness, in which a device worn by a remote partner can simulate being present in the remote location for an observer. We illustrate this idea by constructing the HomCam, a helmet-based omnidirectional video system that gives an observer the 360-degree perspective of a remote wearer. To our knowledge, the HomCam was the first wearable system that enabled real-time streaming of 360-degree video to a remote location built from commercial-of-the-shelf hardware. This paper describes related efforts, the HomCam prototype, its visual display, and an initial test of network performance. This prototype demonstrates some of the challenges of remote situation awareness and contributes to designers’ implementation of related systems.

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