Wireless, Mobile Computing & Mobile Commerce (helen&nadia)

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Across
  1. 2. an industry specification used to create small personal area networks.
  2. 5. a scenario in which objects, animals, and people are provided with unique identifiers and the ability to automatically transfer data over a network without requiring human-to-human or human-to-computer interaction.
  3. 6. Cellular telephones (cell phones) provide two-way radio communications over a cellular network of base stations with seamless handoffs.
  4. 7. when users carry an open mobile device, they can be reached instantly, even across great distances.
  5. 10. Shortest orbital life (low as 5 years)
  6. 11. in remote parts of the world it is the only option available for Internet connections because installing cables is either too expensive or physically impossible.
  7. 13. a high-bandwidth wireless technology with transmission speeds in excess of 100 Mbps which makes UWB a good choice for applications such as streaming multimedia from a personal computer to a television
  8. 15. a real-time, wireless connection between a mobile device and other computing environments, such as the Internet or an intranet.
  9. 16. One major limitation of GEO satellites is that their transmissions take a quarter of a second to send and return from the earth's surface.
  10. 17. a medium-range WLAN
  11. 18. Satellites stationary relative to point on earth is characteristics of
  12. 19. something that changes its location over time.
Down
  1. 1. portals that aggregates and provides content and services for mobile users.
  2. 3. have a range of 100 feet or less (e.g., Bluetooth, ultra-wideband (UWB), and near-field communications (NFC)).
  3. 4. a small, portable wireless device that provides users with a permanent Wi-Fi hotspot wherever they go with a range of about 10 meters (roughly 30 feet).
  4. 8. a wireless access point that provides service to a number of users within a small geographical perimeter (up to approximately 300 feet).
  5. 9. a Web site with an audio interface.
  6. 12. the area of Earth’s surface reached by a satellite’s transmission overcomes the limitations of microwave data relay stations. The higher a satellite orbits, the larger its footprint.
  7. 14. Used for Global Positioning Systems
  8. 15. e-commerce transactions conducted with a mobile device