Chapter 7
Download
1 / 29

CHAPTER 7 - PowerPoint PPT Presentation


  • 142 Views
  • Uploaded on

CHAPTER 7. Wireless, Mobile Computing and Mobile Commerce. CHAPTER OUTLINE. Wireless Devices and Media Wireless Networking Technologies Mobile commerce Pervasive Computing. Wireless Devices and Media. Device Capabilities. Telephony Music/Video player Texting Digital camera

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'CHAPTER 7' - russ


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Chapter 7

CHAPTER 7

Wireless, Mobile Computing and Mobile Commerce


Chapter outline
CHAPTER OUTLINE

  • Wireless Devices and Media

  • Wireless Networking Technologies

  • Mobile commerce

  • Pervasive Computing


Wireless devices and media
Wireless Devices and Media

Device Capabilities

Telephony Music/Video player

Texting Digital camera

Web/Email Point-of-Sale terminal?

Apps, Apps, Apps …

GPS

Organizer/scheduler

QWERTY keyboard

Martin Cooper: Inventor of the cellphone


Microbrowsers in wireless devices
Microbrowsers in Wireless Devices

Opera Mobile

iPhone Safari


Wireless communication media
Wireless Communication Media

  • Infrared

    • Slow; very short range; requires line-of-sight

  • Laser (free space optics)

    • Fast, but requires line-of-sight

  • High-frequency Radio (900 MHz and above)

    • Wireless local area networks (Wi-Fi)

    • Cellular networks

    • Bluetooth (personal area networks)

    • Microware / WiMax


Wireless networking technologies
Wireless Networking Technologies

  • Short range

    • Bluetooth, Near-field communications

  • Medium range

    • Wireless LAN (WiFi)

  • Wide area

    • Cellular, WiMax


Short range bluetooth and its applications
Short Range: Bluetooth and Its Applications

Body Area Network (BAN)

Personal Area Network (PAN)

Range: 30 feet



Medium range wireless lan wi fi
Medium Range: Wireless LAN (Wi-Fi)

Wired LAN Medium

Wireless Clients

Wireless Access Points (AP)

Provide Hotspots

AP Range: 50 - 300 feet




Long range wimax
Long Range: WiMax

  • Worldwide Interoperability for Microwave Access (WiMax)

WiMAX transmitting tower (range: 30 miles)


Terrestrial microwave radio
Terrestrial Microwave Radio

  • Used to cross inaccessible terrain or to connect buildings where cable installation would be expensive.

  • Antennas are about 30 miles apart

  • Requires line of sight


Satellite based microwave radio

Geosynchronous Earth Orbit Satellites (GEOs)

Long propagation delays

There are also Medium and Low Earth Orbit Satellites (MEOs and LEOs)

Satellite-based Microwave Radio


Application example gps
Application Example: GPS

  • Global Positioning System

    • 24 satellites 12,000 miles above earth

    • Receivers pick up signals from at least 4 satellites

    • GPS receivers triangulate position using time stamps

    • Accuracy: as close as 10 square centimeters

Source: en.wikipedia.org


Mobile commerce
Mobile Commerce

  • An extension of E-Commerce

  • Driven by:

    • Widespread availability of mobile devices

    • Bandwidth improvement

  • Popular Applications

    • Financial transactions

    • Reservations/bookings

    • Location-based applications

Mobile wallet


Location based m commerce
Location-Based M-Commerce

  • Highly personalized mobile services

  • Based on location

    • Use GPS- or Bluetooth-enabled cell phones

  • Pull-based – consumers seeking information

  • Push-based – companies sending (unrequested) information to the consumer (hence the sellphone)


Wikitude aumented reality
Wikitude: Aumented Reality



Pervasive computing
Pervasive Computing

  • Aka Ubiquitous Computing (Ubicomp)

  • Computers seem to disappear but are yet everywhere (called Everyware by Adam Greenfield)

  • Two infrastructure technologies for Ubicomp

    • Radio frequency identification (RFID)

    • Wireless sensor networks (WSNs)


Example of rfid application
Example of RFID Application

Coming soon to a supermarket near you

See video



Rfid at selexyz
RFID at Selexyz

RFID tag on book

RFID reader at Selexyz




Wsn application example 2 smart electric grid by
WSN Application Example 2: “Smart” Electric Grid by

Visualization of home energy usage



ad