8 Wireless, Mobile Computing, and Mobile Commerce 8 learning objectives



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8

  • 8

LEARNING OBJECTIVES

  • Identify advantages and disadvantages of each of the four main types of wireless transmission media.
  • Explain how businesses can use technology employed by short-range, medium-range, and long-range networks, respectively.
  • Provide a specific example of how each of the five major m-commerce applications can benefit a business.
  • Describe technologies that underlie pervasive computing, providing examples of how businesses can utilize each one.
  • Explain how the four major threats to wireless networks can damage a business.

CHAPTER OUTLINE

  • Wireless Technologies
  • Wireless Computer Networks and Internet Access
  • Mobile Computing and Mobile Commerce
  • Pervasive Computing
  • Wireless Security

[ The Battle for the Mobile Wallet ]

  • The Problem
  • A Variety of Solutions
    • Mobile Phone Carriers
    • Credit Card Issuers
    • Technology Companies
  • The Results
  • What We Learned from This Case

IT’s

  • Big Wheel Mobile Truck & Square
  • IT’s
  • 8.1

Wireless Devices

  • Wireless Technologies
  • Wireless Devices
    • Smartphones
  • Wireless Transmission Media
    • Microwave
    • Satellite
    • Radio
  • 8.1

Three Major Advantages for Users

  • Wireless Devices
  • Three Major Advantages for Users
    • Small enough to easily carry or wear.
    • Sufficient computing power to perform productive tasks.
    • Communicate wirelessly with the Internet & other devices.
  • One Major Disadvantage for Business
    • Workers can capture and transmit sensitive proprietary information

Cellular telephony

  • Modern Smartphone Capabilities
  • Cellular telephony
  • Bluetooth
  • Wi-Fi
  • Digital camera for images & video
  • Global Positioning System (GPS)
  • Organizer
  • Scheduler
  • Address book
  • Calculator
  • E-mail
  • Short Message Service (SMS, sending and receiving short text messages up to 160 characters in length)
  • Instant Messaging
  • Text messaging
  • MP3 music player
  • Video player
  • Internet access with full-function browser
  • QWERTY keyboard
  • Cell Phones Revolutionize Healthcare in Uganda
  • 8.2

Wireless Media (aka, broadcast media)

  • Wireless Transmission Media (WTM)
  • Wireless Media (aka, broadcast media)
    • transmit signals without wires
  • Major Types of Wireless Media Channels:
    • Microwave
    • Satellite
    • Radio
    • Infrared
  • 8.2

High bandwidth

  • WTM: Microwave
  • High bandwidth
  • Relatively Inexpensive
  • Requires an unobstructed line of sight
  • Susceptible to environmental interference
  • Advantages
  • Disadvantages

High bandwidth

  • WTM: Satellite
  • Expensive
  • Requires unobstructed line of sight
  • Signals experience propagation delay
  • Requires the use of encryption for security
  • Advantages
  • Disadvantages

Geostationary Earth Orbit (GEO)

  • Three Basic Types of Telecommunications Satellites
  • Geostationary Earth Orbit (GEO)
  • Middle Earth Orbit (MEO)
  • Low Earth Orbit (LEO)

22,300 miles

  • Geostationary Earth Orbit (GEO)
  • Orbit:
  • Number of Satellites:
  • Use:
  • Characteristics:
  • A
  • A
  • A
  • A
  • A
  • A
  • a

Provides Internet services to remote areas of Earth

  • Provides Internet services to remote areas of Earth
  • Propagation delay
  • Disrupted by environmental conditions
  • Disadvantages
  • Advantages
  • Internet over Satellite (IoS)

6,434 miles

  • Middle Earth Orbit (MEO)
  • 6,434 miles
  • 10 - 12
  • Global Positioning Systems (GPS)
  • Satellites move relative to point on Earth
  • Moderate number needed for global coverage
  • Requires medium-powered transmitters
  • Negligible transmission delay
  • Less expensive to build and launch
  • Moderate orbital life (6–12 years)
  • Orbit:
  • Number of Satellites:
  • Use:
  • Characteristics:
  • A
  • A
  • A
  • A
  • A
  • A
  • a

A wireless system that utilizes satellites to enable users to determine their position anywhere on Earth.

  • Global Positioning Systems (GPS)
  • A wireless system that utilizes satellites to enable users to determine their position anywhere on Earth.
  • Supported by 24 MEO Satellites
  • Uses of GPS
    • Navigating, Mapping, Surveying, 911 location
  • Three additional GPS Systems
    • GLONASS, Russia 2005
    • Galileo, European Union 2015
    • Beidou, China 2020

400 - 700 miles

  • Low Earth Orbit (LEO)
  • 400 - 700 miles
  • Many
  • Telephone, Internet
  • Satellites move rapidly relative to point on Earth
  • Large number needed for global coverage
  • Requires only low-power transmitters
  • Negligible transmission delay
  • Least expensive to build and launch
  • Shortest orbital life (as low as 5 years)
  • Orbit:
  • Number of Satellites:
  • Use:
  • Characteristics:
  • A
  • A
  • A
  • A
  • A
  • A
  • a

High bandwidth

  • WTM: Radio
  • Creates electrical interference problems
  • Susceptible to ‘snooping’ unless encrypted
  • Advantages
  • Disadvantages

Low to medium bandwidth

  • WTM: Infrared
  • Requires an unobstructed line of sight
  • Advantages
  • Disadvantages

Short-Range Wireless Networks

  • Wireless Computer Networks & Internet Access
  • Short-Range Wireless Networks
  • Medium-Range Wireless Networks
  • Wide-Area Wireless Networks
  • 8.2

Bluetooth

  • Short-Range Wireless Networks
  • Bluetooth
  • Ultra-Wideband
  • Near-Field Communications
  • Near-Field Communications Helps Travelers in Japan
  • 8.3

Wireless Fidelity (Wi-Fi)

  • Medium-Range Wireless Networks
  • Wireless Fidelity (Wi-Fi)
    • Wireless Local Area Networks (WLAN)
    • Wi-Fi Direct
    • MiFi
    • Super Wi-Fi
  • Wireless Mesh Networks
  • Airlines Provide WiFi to Passengers
  • 8.4

Cellular Radio (Cellular telephones)

  • Wide-Area Wireless Networks
  • Cellular Radio (Cellular telephones)
    • 1G
    • 2G
    • 3G
      • CDMA
        • EV-DO
      • GSM
    • 4G
  • Wireless Broadband (or WiMax)

Mobile Computing

  • Mobile Computing and Mobile Commerce
  • Mobile Computing
    • Refers to a real-time connection between a mobile device and other computing environments, such as the Internet or an Intranet.
  • Mobile Commerce
    • Electronic commerce (EC) transactions conducted in a wireless environment, especially via the Internet.
  • 8.3

Two Major Characteristics

  • Mobile Computing
  • Two Major Characteristics
    • Mobility
    • Broad Reach
  • Mobility & Broad Reach Create 5 value-added attributes
    • Ubiquity
    • Convenience
    • Instant connectivity
    • Personalization
    • Localization of Products and Services

Also known as “M-commerce”

  • Mobile Commerce
  • Also known as “M-commerce”
  • Drivers of M-commerce
    • Widespread availability of mobile devices
    • Declining prices
    • Bandwidth improvement

Mobile Commerce Applications Include:

  • Mobile Commerce (continued)
  • Mobile Commerce Applications Include:
    • Location-Based Applications and Services
    • Financial Services
    • Intrabusiness Applications
    • Accessing Information
    • Telemetry Applications
  • Mobile Ads Still Aren’t Very Good
  • 8.5

Invisible “everywhere computing” that is embedded in the objects around us.

  • Pervasive Computing
  • Invisible “everywhere computing” that is embedded in the objects around us.
  • Radio-Frequency Identification (RFID)
  • Wireless Sensor Networks
  • 8.4
  • BP Uses Wireless Technologies
  • 8.6
  • Brazil Uses Smart Meters
  • 8.7

Four Major Threats

  • Wireless Security
  • Four Major Threats
    • Rogue access points
    • War driving
    • Eavesdropping
    • Radio-frequency jamming
  • 8.5

[ Closing Case Retailer Gains Many Benefits with RFID Item-Level Tagging]

  • The Problem
  • The IT Solution
  • The Results


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