'Packet radio' diaporamas de présentation

High Throughput Computing

1.3k views • 106 slides

High Throughput Computing

1.51k views • 106 slides

1.29k views • 105 slides

Coverage and Connectivity Issues in Sensor Networks

Coverage and Connectivity Issues in Sensor Networks. Ten-Hwang Lai Ohio State University. A Sensor Node. Memory (Application). Transmission range. Processor. Sensing range. Network Interface. Actuator. Sensor. Sensor Deployment. How to deploy sensors over a field?

957 views • 75 slides

Amateur Radio Digital Modes

Amateur Radio Digital Modes. Western Washington Medical Services Team Brian Daly, WB7OML EC, King County. History. March, 1980 Federal Communications Commission approved the transmission of ASCII for Amateur Radio in the United States

1.21k views • 60 slides

CS 4700 / CS 5700 Network Fundamentals

Lecture 6 : Data Link (The Etherknot N otwork ). CS 4700 / CS 5700 Network Fundamentals. Revised 1/14/13. Data Link Layer. Function: Send blocks of data ( frames ) between physical devices Regulate access to the physical media Key challenge: How to delineate frames?

575 views • 51 slides

Data and Computer Communications

636 views • 43 slides

Internet Design Principles

Internet Design Principles. EE 122: Intro to Communication Networks Fall 2010 (MW 4-5:30 in 101 Barker) Scott Shenker TAs: Sameer Agarwal, Sara Alspaugh, Igor Ganichev, Prayag Narula http://inst.eecs.berkeley.edu/~ee122/

480 views • 43 slides

Architecting the Network Part 2

Architecting the Network Part 2. Geoff Huston Chief Scientist, Internet Telstra ISOC Workshop. Abstract Design. Router Interface design model. The Client Interface. The Client Interface. Single Homed Clients Permanently connected clients using any one of: leased line radio link

522 views • 41 slides

Linking rural health facility to the internet using packet radio in developing countries (OAUNet a case study)

Linking rural health facility to the internet using packet radio in developing countries (OAUNet a case study). by O.O. Abiona & O.A. Adewara Obafemi Awolowo University, Ile-Ife Nigeria. We shall consider. What is packet radio Choice of packet over other mode

630 views • 40 slides

CS 268: Lecture 3 (Layering & End-to-End Arguments)

CS 268: Lecture 3 (Layering & End-to-End Arguments). Overview. Layering End-to-End Arguments A Case Study: the Internet. What is Layering?.

556 views • 39 slides

Multiple Access Techniques for Wireless Communication

Multiple Access Techniques for Wireless Communication. Submitted to : Dr. Mohab Mangoud Submitted by: Nader Ahmed Abu Al Arraj. Outline. Introduction Spread Spectrum Multiple Access (SSMA) 2.1 Frequency Hopped Multiple Access (FHMA) 2.2 Code Division Multiple Access (CDMA)

1.84k views • 38 slides

Amateur Radio in Public Safety and Emergency Response

Amateur Radio in Public Safety and Emergency Response. ARES and RACES In Southern Illinois. What is amateur radio?. Operators are licensed and regulated by the Federal Communications Commission

932 views • 31 slides

Mobile Data Management

383 views • 31 slides

Winlink 2000 (WL2K)

Winlink 2000 (WL2K). Introduction and Overview. Prepared by WL2K authors: Vic Poor, W5SMM / AAA9WL Rick Muething, KN6KB and Presenter: Rick Pemble AAR4WJ / W4RP 10/13/07 Melbourne Hamfest . Overview:. What is Winlink 2000 (aka WL2K) What were the design Goals for Winlink 2000

618 views • 26 slides

Introduction to Packet Radio

Introduction to Packet Radio. By Matt Mitchell KB8UVN. Who am I?. Matt Mitchell, KB8UVN Licensed since 1994 Active on Packet Radio since 1995 TCP/IP Coordinator for Ohio AMPR Net (44.x.x.x) Trustee of the Central Ohio Packet Association. What do I do?.

482 views • 26 slides

Ethernet

Ethernet Outline Multiple Access and Ethernet Intro Ethernet Framing CSMA/CD protocol Exponential backoff Shared Access Networks are Different Shared Access Networks assume multiple nodes on the same physical link Bus, ring and wireless structures

504 views • 25 slides

Ethernet

Ethernet. Outline Multiple Access and Ethernet Intro Ethernet Framing CSMA/CD protocol Exponential backoff. Shared Access Networks are Different. Shared Access Networks assume multiple nodes on the same physical link Bus, ring and wireless structures

467 views • 25 slides

Digital Object Architecture: an Advanced Architecture for Managing Digital Information

Digital Object Architecture: an Advanced Architecture for Managing Digital Information. WSIS Forum 2011 May 19, 2011. Presentation by Robert E. Kahn President & CEO Corporation for National Research Initiatives. Origins of the Internet. Multiple Different Packet Networks Open Architecture

404 views • 23 slides

MAC Protocols Media Access Control (who gets the use the channel)

MAC Protocols Media Access Control (who gets the use the channel). TDM and FDM are inefficient. It is best to share the medium so that who ever needs it can use it. And if it is not needed, it is not used. Think of bursty transmissions. The objective is dynamic allocation of the channel.

704 views • 13 slides