Term
Small to carry or wear
Sufficient computing power
Communicate wirelessly with Internet and other devices
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Definition
| Three major advantages to wireless devices: |
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Term
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Definition
systems are electromagnetic waves widely used for high-volume, long-distance, point-to-point (line-of-sight) communication.
Advantages: high bandwidth, inexpensive
Disadvantages: line-of-sight, susceptible to environmental interference |
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Term
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Definition
uses radio-wave frequencies to send data directly between transmitters and receivers.
•Advantages: high bandwidth, signals pass through walls, inexpensive, easy to install
•Disadvantages: electrical interference, encryption required |
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Definition
uses radio-wave frequencies to send data directly between transmitters and receivers.
Advantages: high bandwidth, signals pass through walls, inexpensive, easy to install
Disadvantages: electrical interference, encryption required
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Term
| Satellite radio (digital radio) |
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Definition
| offers uninterrupted, near CD-quality music that is beamed to your radio from space. XM satellite radio and Sirius have agreed to merge as of mid-2007. |
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Definition
light is red light that is not commonly visible to human eyes
Advantages: low to medium bandwidth, short distances
Disadvantages: line-of-sight
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Definition
systems make use of communication satellites
Advantages: high bandwidth, large area of coverage
Disadvantages: expensive, line-of-sight, propagation delay (brief pause between sending and receiving), encryption required
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Term
| Geostationary-earth-orbit (GEO) satellites |
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Definition
| orbit 22,300 miles directly above the equator and maintains a relatively fixed position in relation to a dish on earth |
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Definition
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Definition
| allows users to access the Internet from a dish |
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Term
| Medium-earth-orbit (MEO) satellites |
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Definition
| are located 6,000 miles above the earth’s surface and move |
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Term
| Global Positioning System (GPS) |
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Definition
| which is a wireless system that enable users to determine their position on earth |
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Term
| Low-earth-orbit (LEO) satellites |
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Definition
are 400 to 700 miles above the surface, so they move much faster with respect to a point on the earth’s surface; require many to cover the earth
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Term
| Short-range wireless networks |
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Definition
| generally have a range of 100 feet or less. |
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Term
| Near-field Communications (NFC) |
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Definition
| have the shortest range of any wireless network and are often embedded in mobile devices such as cell phones and credit cards. |
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Definition
| can link up to eight devices within a 30-foot area and transmit up to 2.1 megabits per second. |
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Term
| Medium-range wireless networks |
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Definition
| are the familiar wireless local area networks (WLANs). The most common type of medium-range wireless network is Wireless Fidelity (Wi-Fi). |
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Term
| Wireless fidelity (Wi-Fi): |
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Definition
| used in wireless local area networks |
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Term
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Definition
| : a transmitter with an antenna |
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Definition
| a 3D geographical perimeter with in which a wireless access point provides wireless access for users |
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Term
| Wireless network interface card (NIC) |
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Definition
| enables mobile devices to communicate wirelessly. |
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Definition
| is a small, portable, wireless device that provides users with a permanent Wi-Fi hotspot wherever they go. |
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Definition
| use multiple Wi-Fi access points to create a wide-area network that can be very large |
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Term
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Definition
| refers to real-time, wireless connection between a mobile device and other computing environments, such as the Internet and an intranet. |
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Term
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Definition
| users carry a mobile device and can initiate a real-time contact with other systems wherever they happen to be. |
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Definition
users can be reached instantly when they carry an open mobile device.
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Term
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Definition
| : mobile device can provide information and communications regardless of user’s location. |
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Definition
| mobile devices makes it easy to access the Web, intranets, and other mobile devices. |
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Term
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Definition
| mobile devices makes it fast to access the Web, intranets, and other mobile devices |
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Definition
| information can be customized and sent to individual consumers (e.g., as a short message service). |
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Term
| Localization of products and services |
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Definition
| knowing a user’s location helps companies advertise their products and services. |
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Term
| Shopping from Wireless Devices |
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Definition
| online vendors allow customers to shop from wireless devices. |
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Term
| Mobile commerce (m-commerce) |
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Definition
| refers to e-commerce transactions that are conducted with a mobile or wireless device |
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Term
| Location-based Advertising |
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Definition
| is when marketers know the current locations and preferences of mobile users, they can send user-specific advertising messages to wireless devices about nearby shops, malls and restaurants. |
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Definition
| provide information to customers about local services and conditions via cell phones. |
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Term
| Mobile (Wireless) Wallets |
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Definition
technologies that allow cardholders to make purchases with a single click from their mobile devices. |
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Definition
| electronic payments for small purchase amounts (generally less than $10). |
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Definition
| Services provided by banking institutions that allow customers to pay their bills directly from their cell phones. |
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Term
| Wireless Electronic Payment Systems |
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Definition
| these systems transfer mobile phones into secure, self-contained purchasing tools capable of instantly authorizing payments over the cellular network. |
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Definition
| Many banks now offer access to financial & account information, the ability to transfer funds, and receive alerts on digital cell phones, smart phones, and PDAs. |
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Definition
| : include banking, wireless payments, micropayments, wireless wallets, bill-payment services, brokerage services, and money transfers. |
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Term
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Definition
| aggregate and provide content and services for mobile users |
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Definition
| are websites with an audio interface. |
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Definition
| is the wireless transmission and receipt of data gathered from remote sensors. |
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Definition
is the use of modern telecommunications and information technologies to provide clinical care to individuals located at a distance and for the transmission of information to provide that care.
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Term
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Definition
| is an unauthorized access point to a wireless network. |
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Term
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Definition
| is the act of locating WLANs while driving around a city or elsewhere |
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Term
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Definition
| refers to efforts by unauthorized users to try to access data traveling over wireless networks. (e.g. Gchat) |
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Term
| RF (Radio frequency) jamming |
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Definition
| is when a person or a device intentionally or unintentionally interferes with your wireless network transmissions. |
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Term
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Definition
| require line-of-sight and represents the manufacturer and product, but not the actual item |
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Term
| Quick response (QR) codes |
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Definition
| are two-dimensional codes that store information horizontally and vertically and can be read from any direction or angle |
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Term
| Radio frequency identification (RFID) |
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Definition
| technology allows manufacturers to attach tags with antennas and computer chips on goods and then track their movement through radio signals |
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Term
| Wireless sensor networks (WSNs) |
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Definition
are networks of interconnected, battery-powered, wireless sensors that are placed into the physical environment.
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