Lora-Based Device-To-Device Smartphone Communication for Crisis Scenarios
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Analysis of Server-Smartphone Application Communication Patterns
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Aaltodoc Publication Archive Aalto University School of Science Degree Programme in Computer Science and Engineering Péter Somogyi Analysis of server-smartphone application communication patterns Master’s Thesis Budapest, June 15, 2014 Supervisors: Professor Jukka Nurminen, Aalto University Professor Tamás Kozsik, Eötvös Loránd University Instructor: Máté Szalay-Bekő, M.Sc. Ph.D. Aalto University School of Science ABSTRACT OF THE Degree programme in Computer Science and MASTER’S THESIS Engineering Author: Péter Somogyi Title: Analysis of server-smartphone application communication patterns Number of pages: 83 Date: June 15, 2014 Language: English Professorship: Data Communication Code: T-110 Software Supervisor: Professor Jukka Nurminen, Aalto University Professor Tamás Kozsik, Eötvös Loránd University Instructor: Máté Szalay-Bekő, M.Sc. Ph.D. Abstract: The spread of smartphone devices, Internet of Things technologies and the popularity of web-services require real-time and always on applications. The aim of this thesis is to identify a suitable communication technology for server and smartphone communication which fulfills the main requirements for transferring real- time data to the handheld devices. For the analysis I selected 3 popular communication technologies that can be used on mobile devices as well as from commonly used browsers. These are client polling, long polling and HTML5 WebSocket. For the assessment I developed an Android application that receives real-time sensor data from a WildFly application server using the aforementioned technologies. Industry specific requirements were selected in order to verify the usability of this communication forms. The first one covers the message size which is relevant because most smartphone users have limited data plan. -
TITAN 2000 - Cat 12/15 4G LTE CPE Advanced Modem
TITAN 2000 - Cat 12/15 4G LTE CPE Advanced Modem Global Telecom’s TITAN 2000 is the latest advancement in modems for the Internet of Things. With 8x8 MIMO at its core, the TITAN 2000 provides lightning fast speed and always reliable connections for enterprise and consumers alike. The TITAN 2000 is capable of maximum download speeds of 600 MBPS and is built using a Cat 15 module (model: Global-7243A) with eight antenna ports. It delivers 11 dB, which is 13 times stronger than typical 2x2 MIMO modems or end user devices. This high capacity and strong received power comes from specialized design with high MIMO and high gain antenna configuration. It’s an ideal solution for homes and businesses looking to truly cut the cord once and for all. Innovation and rapid changes in our connected devices make it hard to plan for § PoE capable for simple the future, but the TITAN 2000’s designers have taken migration needs into and reliable interface account. Using cellular high-speed protocols, including advanced LTE and 5G, § Advanced 4G the TITAN 2000 has been created to be future-proof and capable of hosting Cat capabilities with 8R2T 19 and 5G modules with pin-to-pin compatibility -- eliminating the need to design (Release 13 change software or other parts. Global Telecom’s flagship product for 2020 compliant) also supports up to four channels of carrier aggregation utilizing inter- and intra- band. The TITAN 2000 is compatible with all U.S. carriers and in more than 165 § Multi-band and multi- countries worldwide. -
Performance of VBR Packet Video Communications on an Ethernet LAN: a Trace-Driven Simulation Study
9.3.1 Performance of VBR Packet Video Communications on an Ethernet LAN: A Trace-Driven Simulation Study Francis Edwards Mark Schulz edwardsF@sl .elec.uq.oz.au marksas1 .elec. uq.oz.au Department of Electrical and Computer Engineering The University of Queensland St. Lucia Q 4072 Australia Abstract medium term, we can expect that current LAN technolo- Provision of multimedia communication services on today’s gies will be utilized in the near term for packet transport of packet-switched network infrastructure is becoming increas- video applications [4,5, 61. Characterizing the performance ingly feasible. However, there remains a lack of information of current networks carrying video communications traffic is regarding the performance of multimedia sources operating therefore an important issue. This paper investigates packet in bursty data traffic conditions. In this study, a videotele- transport of real time video communications traffic, charac- phony system deployed on the Ethernet LAN is simulated, teristic of videotelephony applications, on the popular 10 employing high time-resolution LAN traces as the data traf- Mbit/s Ethernet LAN. fic load. In comparison with Poisson traffic models, the Previous work has established that Ethernet is capable of trace-driven cases produce highly variable packet delays, and supporting video communication traffic in the presence of higher packet loss, thereby degrading video traffic perfor- Poisson data traffic [6, 71. However, recent studies of high mance. In order to compensate for these effects, a delay time-resolution LAN traffic have observed highly bursty control scheme based on a timed packet dropping algorithm traffic patterns which sustain high variability over timescales is examined. -
Communication Protocol for Schools
Communication Protocol for Schools Communication plays a key role in creating and fostering strong, positive relationships between the school and the home. Communication is a two-way street; our schools share information with our families and community, and our families share information with our schools. The purpose of this document is to guide, manage and improve school-home communication by offering a standard format, structure and sequence for regular, ongoing communication. Communication Channels Communication can take place in a variety of formats. The message and the purpose of the communication can help determine which format is most appropriate. Generally, the more issues-driven and/or detailed the information is, the more direct the communication channel chosen should be. Communication channels include: Face-to-face communication – one-on-one meetings, School Council meetings, Parent-Student- Teacher interviews Telephone conversations Hard copy, written communication – letters sent home from the school, paper school newsletters Electronic communication – email, electronic newsletters, websites, social media When the communication requires a dialogue, such as bringing forward a question or concern or when a discussion is required on a particular topic, the preferred channels of communication are ones that allow for an immediate and ongoing interaction between the people involved. The best formats for this kind of communication are face-to-face conversations or telephone conversations. Schools and families are encouraged to use these direct channels of communication when a topic is complex or requires a dialogue. These more direct forms of communication also help us establish a personal connection, which helps build relationships that we don’t get in other forms of communication. -
Voice Over Internet Protocol (Voip): a Brief Review
© APR 2018 | IRE Journals | Volume 1 Issue 10 | ISSN: 2456-8880 Voice over Internet Protocol (VoIP): A Brief Review ANURAG K MADHESHIYA1, KIRAN S KALE2, SHIV K YADAV3, JIGNESHKUMAR R. VALVI4 1,2,3,4 Department of Electronics and Communication, SVNIT Surat, India Abstract -- VoIP stands for Voice over Inter Protocol. It is setting up calls, registering the calls, authenticating a communication protocol mainly used for voice and terminating the call. Protocol belonging to H.323 communication, data transfer and video calling. It is based family of protocol uses TCP and UDP connection for on packet transmission over internet network. Paul Baran transportation. For call registering and call signaling and other researchers developed the packet network in the H.225 protocol is used. For media session mid twentieth century. In 1973 Dany Cohen first demonstrated packet voice in flight simulator application. establishment and controlling H.245 is used. For Due to its digital nature it is easy to operate on this protocol. conferencing T.120 protocol is used [3]-[4]. Index Terms: MGCP, Packet, QoS, SIP I. INTRODUCTION Voice over Internet Protocol also known as Voice over IP and VoIP is a communication standard for transmission of voice signal, data transmission and video conferencing. Actually this technology follow packet switching. In packet switching first the input signal (voice, data, video) converted into digital form so other operation becomes simple after this we do encoding, compressing of digital data to make more secure transmission through channel. Then after this we transmit the signal over the channel. At receiver side we do reverse of it but it also require an addition block before receiver to store packets and reorder these packets because in packet switching different Figure 1: Call flow of H.323 packets follow different path so reaches in random manner. -
Hughesnet HT2000W Satellite Modem – User Guide
HT2000W Satellite Modem User Guide 1041264-0001 Revision A February 15, 2017 11717 Exploration Lane, Germantown, MD 20876 Phone (301) 428-5500 Fax (301) 428-1868/2830 Copyright © 2017 Hughes Network Systems, LLC All rights reserved. This publication and its contents are proprietary to Hughes Network Systems, LLC. No part of this publication may be reproduced in any form or by any means without the written permission of Hughes Network Systems, LLC, 11717 Exploration Lane, Germantown, Maryland 20876. Hughes Network Systems, LLC has made every effort to ensure the correctness and completeness of the material in this document. Hughes Network Systems, LLC shall not be liable for errors contained herein. The information in this document is subject to change without notice. Hughes Network Systems, LLC makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Trademarks HUGHES and Hughes Network Systems are trademarks of Hughes Network Systems, LLC. All other trademarks are the property of their respective owners. Contents Contents ................................................................................................. 3 Understanding safety alert messages .................................................... 5 Messages concerning personal injury .................................................................... 5 Messages concerning property damage ................................................................ 5 Safety -
An Evaluation Protocol for Picture Archiving and Communication System: a Systematic Review
ORIGINAL PAPER An Evaluation Protocol for Picture Archiving and Communication System: a Systematic Review Mohsen S. Tabatabaei1, ABSTRACT Mostafa Langarizadeh1, Introduction: Picture archiving and communication system (PACS) serves to store, transmit, communi- Kamran Tavakol2 cate and manage medical images. A logical evaluation protocol assists to determine whether the system is technically, structurally and operationally fit. The purpose of this systematic review was to propose a 1Department of Health Information logical evaluation protocol for PACS, particularly useful for new hospitals and other healthcare institutions Management, School of Health Management and Information Sciences, Iran University of in developing countries. Methods and Materials: We systematically reviewed 25 out of 267 full-length Medical Sciences. Tehran, Iran articles, published between 2000 and 2017, retrieved from four sources: Science Direct, Scopus, PubMed 2School of Medicine, University of Maryland and Google Scholar. The extracted data were tabulated and reviewed successively by three independent Baltimore. Baltimore, MD, USA panels of experts that oversaw the design of this study and the process by which the PACS evaluation protocol was systematically developed. Results: The outcome data were ranked by expert panels and Corresponding author: Mohsen S. Tabatabaei, Tel: +98-990-188-0720. E-mail: [email protected] analyzed statistically, with the reliability established at 0.82 based on the Pearson’s correlation coefficient. The essential components and the best options to establish an optimal PACS were organized under nine main sections: system configuration; system network; data storage; data compression; image input; image doi: 10.5455/aim.2017.25.250-253 characteristics; image presentation; communication link; and system security, with a total of 20 compo- ACTA INFORM MED. -
Digital Subscriber Lines and Cable Modems Digital Subscriber Lines and Cable Modems
Digital Subscriber Lines and Cable Modems Digital Subscriber Lines and Cable Modems Paul Sabatino, [email protected] This paper details the impact of new advances in residential broadband networking, including ADSL, HDSL, VDSL, RADSL, cable modems. History as well as future trends of these technologies are also addressed. OtherReports on Recent Advances in Networking Back to Raj Jain's Home Page Table of Contents ● 1. Introduction ● 2. DSL Technologies ❍ 2.1 ADSL ■ 2.1.1 Competing Standards ■ 2.1.2 Trends ❍ 2.2 HDSL ❍ 2.3 SDSL ❍ 2.4 VDSL ❍ 2.5 RADSL ❍ 2.6 DSL Comparison Chart ● 3. Cable Modems ❍ 3.1 IEEE 802.14 ❍ 3.2 Model of Operation ● 4. Future Trends ❍ 4.1 Current Trials ● 5. Summary ● 6. Glossary ● 7. References http://www.cis.ohio-state.edu/~jain/cis788-97/rbb/index.htm (1 of 14) [2/7/2000 10:59:54 AM] Digital Subscriber Lines and Cable Modems 1. Introduction The widespread use of the Internet and especially the World Wide Web have opened up a need for high bandwidth network services that can be brought directly to subscriber's homes. These services would provide the needed bandwidth to surf the web at lightning fast speeds and allow new technologies such as video conferencing and video on demand. Currently, Digital Subscriber Line (DSL) and Cable modem technologies look to be the most cost effective and practical methods of delivering broadband network services to the masses. <-- Back to Table of Contents 2. DSL Technologies Digital Subscriber Line A Digital Subscriber Line makes use of the current copper infrastructure to supply broadband services. -
Internet of Things (Iot): Protocols White Paper
INTERNET OF THINGS (IOT): PROTOCOLS WHITE PAPER 11 December 2020 Version 1 1 Hospitality Technology Next Generation Internet of Things (IoT) Security White Paper 11 December 2020 Version 1 About HTNG Hospitality Technology Next Generation (HTNG) is a non-profit association with a mission to foster, through collaboration and partnership, the development of next-generation systems and solutions that will enable hoteliers and their technology vendors to do business globally in the 21st century. HTNG is recognized as the leading voice of the global hotel community, articulating the technology requirements of hotel companies of all sizes to the vendor community. HTNG facilitate the development of technology models for hospitality that will foster innovation, improve the guest experience, increase the effectiveness and efficiency of hotels, and create a healthy ecosystem of technology suppliers. Copyright 2020, Hospitality Technology Next Generation All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior permission of the copyright owner. For any software code contained within this specification, permission is hereby granted, free-of-charge, to any person obtaining a copy of this specification (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the above copyright notice and this permission notice being included in all copies or substantial portions of the Software. -
Modem? Router? Gateway? Making Sense of Your Home Networking Equipment
FACT SHEET Modem? Router? Gateway? Making sense of your home networking equipment Most of the time, you don’t need to know anything about how the water gets into your home—you just turn on the tap. And you don’t need to be an electrician to use your refrigerator; you just plug it in and you’re all set. With your home Internet service, it should be the same way. You shouldn’t need to know much about the technology to use it. But the reality is that it’s helpful to have a basic understanding of networking technology and the different pieces of equipment in your home that allow you to connect to the Internet. Why are there so many different names for these devices? One challenge relates to the names that technology experts use to refer to these devices, whether it’s your Internet service provider (ISP) or the sales person at the big box store. You’ve probably heard these devices called several different things, such as a modem, gateway, router, or maybe even an access point. What’s the difference between all of these devices? It can definitely be complicated. The first thing that’s important to understand is that these devices collectively perform two different functions: nnthey make it possible for your ISP to bring an Internet connection into your home; and nnthey make it possible for that connection to be converted to a Wi-Fi signal so you can get online wirelessly from any of your devices. One-device solution: residential gateway Sometimes both of these functions are combined in a single device, which is usually called a residential gateway. -
High-Speed Internet Connection Guide Welcome
High-Speed Internet Connection Guide Welcome Welcome to Suddenlink High-Speed Internet Thank you for choosing Suddenlink as your source for quality home entertainment and communications! There is so much to enjoy with Suddenlink High-Speed Internet including: + Easy self-installation + WiFi@Home availability + Easy access to your Email + Free access to Watch ESPN This user guide will help you get up and running in an instant. If you have any other questions about your service please visit help.suddenlink.com or contact our 24/7 technical support. Don’t forget to register online for a Suddenlink account at suddenlink.net for great features and access to email, billing statements, Suddenlink2GO® and more! 1 Table of Contents Connecting Your High Speed Internet Connecting Your High-Speed Internet Your Suddenlink Self-Install Kit includes Suddenlink Self-Install Kit ..................................................................................... 3 Connecting your computer to a Suddenlink modem ....................................... 4 the following items: Connecting a wireless router or traditional router to Suddenlink ................. 5 Getting Started Microsoft Windows XP or Higher ......................................................................... 6 Cable Modem Power Adapter Mac OS X ................................................................................................................. 6 Register Your Account Online ................................................................................7 Suddenlink WiFi@Home -
Setting up Spectrum Internet and Wifi
Setting Up Spectrum Internet and WiFi 1 Connect the modem 3 Connect a wireless a Connect one end of the coax cable to the cable wall device to the WiFi router outlet and the other end to the modem. a Open the WiFi connections on your device. b Plug the power cord into the modem, then plug the other end into an electrical outlet. b Select your unique network name (SSID), which you can c After you plug in the modem, wait for it to connect find on the bottom of the router and on the enclosed to the network (about 2 to 5 minutes) before stickers. If you see the name ending in “5G,” the router proceeding to the next step. is 5 GHz-capable. Connecting to the “5G” network may provide a better experience. If a Spectrum receiver is connected to the cable c Enter the password printed on the WiFi router. This password wall outlet see, the instructions below. is also printed on the stickers included with the router. Not all cables will be used during installation. d Follow steps A-C to connect other devices. 2 Connect the modem and the 4 Activate the modem WiFi router a Choose from two ways to start your service: a Connect one end of the Ethernet cable to the modem and the other end to the yellow internet port on the WiFi router. Use your smartphone to go to activate.spectrum.net. b Plug the power cord into the WiFi router, and then On your computer, browse to activate.spectrum.net.