Wireless, Mobile Computing & Mobile Commerce (helen&nadia)
Across
- 2. an industry specification used to create small personal area networks.
- 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.
- 6. Cellular telephones (cell phones) provide two-way radio communications over a cellular network of base stations with seamless handoffs.
- 7. when users carry an open mobile device, they can be reached instantly, even across great distances.
- 10. Shortest orbital life (low as 5 years)
- 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.
- 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
- 15. a real-time, wireless connection between a mobile device and other computing environments, such as the Internet or an intranet.
- 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.
- 17. a medium-range WLAN
- 18. Satellites stationary relative to point on earth is characteristics of
- 19. something that changes its location over time.
Down
- 1. portals that aggregates and provides content and services for mobile users.
- 3. have a range of 100 feet or less (e.g., Bluetooth, ultra-wideband (UWB), and near-field communications (NFC)).
- 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).
- 8. a wireless access point that provides service to a number of users within a small geographical perimeter (up to approximately 300 feet).
- 9. a Web site with an audio interface.
- 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.
- 14. Used for Global Positioning Systems
- 15. e-commerce transactions conducted with a mobile device