Chapter 8- Wireless, Mobile Computing & Mobile Commerce
Internet of Things (IoT)
system in which any object, natural or manmade, has a unique identity (i.e., its own IP address) and is able to send and receive information over a network (i.e., the Internet) without human interaction.
RFID (radio frequency identification)
technology allows manufacturers to attach tags with antennas and computer chips on goods and then track their movement through radio signals. was developed to replace bar codes.
near- field communication (NFCs)
the smallest range of any short-range wireless network. It is designed to be embedded in mobile devices such as cell phones and credit cards.
medium range wireless networks
these networks are the familiar wireless local area networks (LANs)
MiFi
type of medium range wireless network that is expensive both to acquire and to use. (hint: it is a hotspot)
mobility
users carry a device with them and can initiate a real-time contact with other systems from wherever they happen to be.
audio portal
website with audio interference -can also be accessed through a standard phone or a cell phone.
cells
what the cell phone communicates with radio antennas, or towers, placed within adjacent geographic areas
telemetry
wireless transmission and receipt of data gathered from remote sensors. -has numerous computer applications
mobile portal
A portal that aggregates and provides content and services for mobile users.
3 basic short range networks
Bluetooth, ultra-wideband (UWB), and near-field communications (NFC) are what?
A. 4G
LTE is ____ cellular technology. A. 4G B. 3G C. 5G D. 2G
location-based commerce (L- commerce)
Mobile commerce transactions targeted to individuals in specific locations, at specific times.
expense
The major problem with RFID has been:
-microwave -satellite -radio
What are the 3 major types of wireless transmission media?
WiMaX
Worldwide Interoperability for Microwave Access
intrabusiness applications
commerce applications used within organizations
radio
disadvantages: -creates electrical interference problems -susceptible to shopping unless encrypted -signal break up
LEO
low earth orbit
footprint
the area of Earth's surface reached by a satellite's transmission
mobile computing
two major characteristics: -mobility -broad reach
C
All of the following statements regarding QR codes are true except: A. QR codes are more resistant to damage than bar codes B. QR codes store more info than bar codes C. QR codes can only store information that is comprised of numbers and text D. QR codes can be read from any direction or angle
B.GEO
You have satellite TV. Providers can use ___ satellites to get this service to you. A. LEO B. GEO C. MEO D. VEO
GEO
geostationary earth orbit
Wireless Fidelity (WiFi)
is a medium-range WLAN, which is a wired LAN but without the cables.
Satellite transmission systems
make use of communication satellites -GEO, MEO, and LEO (type of transmission systems)
dematerilization
occurs when the functions of many physical devices are included in one other physical device.
MiFi
small, portable wireless device that provides users with a permanent Wi-Fi hotspot wherever they go
broad reach
the fact that when users carry an open mobile device, they can be reached instantly, even across great distances.
LTE
wireless broadband technology designed to support roaming Internet access through smartphones and handheld devices. is approximately 10 times faster than 3G networks.
medium range wireless networks
-WiFi -WiFi Direct -MiFi -Super WiFi are what type of networks?
Wide Area Wireless Networks
-cellular radio -wireless broadband (WiMax) are what type of networks?
m- commerce applications
-financial services -location based application and services -mobile advantage -intrabusiness applications -accessing info -telemetry applications are all part of what?
WiMax
-has a wireless access range of up to 31 miles, compared to 300 feet for Wi-Fi. -has a data transfer rate of up to 75 Mbps. It is a secure system, and it offers features such as voice and video. -can transmit broadband Internet connections to antennas on homes and businesses located miles away - provide long-distance broadband wireless access to rural areas and other locations that are not currently being served.
LEO
-located 400 to 700 miles above Earth's surface. -satellites move with respect to a point on Earth's surface and therefore must be tracked by receivers. -an pick up signals from weak transmitters. -many satellites
mobility and broad reach
-ubiquity -convenience -instant connectivity -personalization -localization of products and services are 5 added attributes from what?
adavtanages of wireless devices
1.They are small enough to easily carry or wear. 2.They have sufficient computing power to perform productive tasks. 3.They can communicate wirelessly with the Internet and other devices.
mobile computing
A real-time connection between a mobile device and other computing environments, such as the Internet or an intranet.
wireless access point
A transmitter with an antenna that connects a mobile device to a wired local area network is called a(n):
telemetry
Find my iPhone is an example of what m-commerce application?
C. micropayment
Using your cell phone to purchase a Coke from a vending machine is an example of: A. mobile banking B. wireless wallet C. micropayment D. brokerage service E. money transfer
E. Ultra- wideband
Which of the following is the most appropriate wireless technology for real-time location of caregivers and mobile equipment in health-care environments? A. microwave B. Infrared C. bluetooth D. Wi-Fi E. Ultra- wideband
low earth orbit
Which type of satellite requires the highest number of satellites to cover the earth?
D. Bluetooth
___ is a short range wireless network. A. lTE B. MiFI C. WiMAX D. Bluetooth
B. Wireless sensor networks
____ collect data from many points over an extended space. A. Wi- Fi Networks B. Wireless sensor networks C. location based applications D. Ultra- wideband networks E. Wi-Max networks
B. WiMAX
____ is a wide-area wireless network. A. LTE B. WiMAX C. MiFI D. NFC
D. NFC; short
____ is designed to be embedded in mobile devices and can be used with mobile wallets. It is a _____ -range wireless network technology. A. UWB; medium B. UWB; short C. NFC; medium D. NFC; short
A. GEO
____ satellites are the most expensive to build. A. GEO B. VEO C. MEO D. LEO
B. MEO
____ satellites are used to run the GPS system. A. VEO B. MEO C. GEO D. LEO
B. GEO
____ satellites have the longest orbital life. A. LEO B. GEO C. VEO D. MEO
C. LEO
____ satellites have the shortest orbital life. A. GEO B. MEO C. LEO D. VEO
C. NFC
____ technology enables the use of mobile wallets. A.WiMAX B. UWB C. NFC D. Wi-FI
C. radio
____ transmission systems are inexpensive and easy to install but they create electrical interference problems. A. microwave B. satellite C. radio D. fiber
c. satellite
____ transmission systems can have a large coverage area but their signals experience propagation delay. A. microwave B. radio c. satellite d. fiber
personal area network
a computer network used for communication among computer devices
ultra- wideband
a high-bandwidth wireless technology with transmission speeds in excess of 100 Mbps.
Global Positioning System (GPS)
a wireless system that uses satellites to enable users to determine their position anywhere on earth
microwaves
advantages: -high bandwidth -relatively inexpensive
radio
advantages: -high bandwidth -signals pass through walls -inexpensive and easy to install
satellite
advantages: -high bandwith -large coverage area
MiFi
also known as intelligence mobile hotspot
propagation delay
any delay in communications from signal transmission time through a physical medium
mobile commerce
can be transacted on the Internet, private communication lines, smart cards, and other infrastructures. creates opportunities for businesses to deliver new services to existing customers and to attract new customers.
Super WiFi
coined by the U.S. Federal Communications Commission (FCC) to describe a wireless network proposal that creates long-distance wireless Internet connection. uses the lower-frequency "white spaces" between broadcast TV channels. These frequencies enable the signal to travel farther and penetrate walls better than normal Wi-Fi frequencies.
satellite
disadvantages: -expensive -must have line of sight communication -signals experience propgation delay -must have encyrption for security
microwaves
disadvantages: -requires line of sight communication -susceptible to environmental interference
m- commerce
driven by the widespread availability of mobile devices, the declining prices of such devices, and rapidly improving wireless bandwidth.
WiFi Direct
enables peer-to-peer communications, so devices can connect directly. It allows users to transfer content among devices without having to rely on a wireless antenna.
smart phone
is a new class of digital communication device that provides an organizer, cell phone, digital camera, access to e-mail, Internet access, and short message service.
Wireless Application Protocol
is the standard that enables wireless devices to access Web-based information and services.
bar code
known as the Universal Product Code (UPC), is made up of 12 digits that are batched in various groups.
MEO
located about 6,000 miles above Earth's surface -require more satellites from Earth bc of a smaller footprint than GEO -number of satellites: 10-12
benefits of WiFi
low cost and its ability to provide simple Internet access. It is the greatest facilitator of the wireless Internet—that is, the ability to connect to the Internet wirelessly.
bluetooth
low power consumption and the fact that it uses radio waves that are emitted in all directions from a transmitter are advantages for what?
MEO
medium earth orbit
Wide -Area Wireless Networks
networks that connect users to the Internet over a geographically dispersed territory. These networks typically operate over the licensed spectrum—that is, they use portions of the wireless spectrum that are regulated by the government
GEO
orbit 22,300 miles directly above the equator. These satellites maintain a fixed position above Earth's surface because, at their altitude, their orbital period matches the 24-hour rotational period of Earth -TV satellites and broadcasts -8 satellites
cellular radio
phones that provide two-way radio communications over a cellular network of base stations with seamless handoffs. -1G to 5G