Chapter 8 Wireless Mobile Computing and Mobie Commerce

Intrabusiness Applications

technology that is part of the work flow process

War driving

the act of locating WLAN's while driving/walking around a city or elsewhere with your Wi-Fi detector

The "cell phone culture"

the wide spread use of cell phones a social phenomenon

Microwave transmission

transmit data via electromagnetic waves, used for high-volume, long-distance, line-of-sight communication -high bandwidth -inexpensive -must have unobstructed line of sight -susceptible to environmental interference

Wireless Mesh Networks

use multiple Wi-Fi access points to create a wide area network that can be quite large not long range because it uses multiple local are networks to create a Wide area network

Mobility

users carry a device with them and can initiate a real-time contact with other systems from Wherever they happen to be

Radio (wireless transmission Media)

uses radio-wave frequencies to send data directly between transmitters and receivers -when travel to far from source station the signal breaks or fades into static

Bandwidth improvement

you need this to conduct m-commerce Wi-Fi, 3or4G, and WiMAX contribute to ths improvement

development of M-commerce is driven by the following factors ...

→ Widespread availability of mobile devices → No need for a PC → The "cell phone culture" → Declining prices → Bandwidth improvement

Location-based commerce

→ shopping from wireless Devices → Location-based Advertising → Location-based Services

Financial Services

→ wireless electronic payment system → Mobile banking → wireless bill payments → mobile wallet → micropayments

How Global Positioning System Works

- the exact position of each GPS satellite is constantly recorded and known - by using the known speed of the signals and the distance from the 3 or 4 satellites this software can find the location of any receiving station or user within a range of 10 feet

Wide-area Wireless Networks

--> Cellular Radio --> Wireless Broadband or WiMAX

Short range wireless networks

--> bluetooth --> Ultra-Wideband --> Near-field Communications

Medium-Range Wireless Networks

--> wireless fidelity --> wireless mesh networks

Cellular Radio

-AKA cellular telephones -provide two-way communications over a cellular network of base stations with seamless handoffs -evolving quickly toward high transmission speeds -1G, 2G, 3G, 4G

mobile portal

-a way to access information -provides content and services through aggregation -services include news, sports, email, travel, restaurants

Two types of GPS

-dashboard GPS system -phone application navigation systems

Geostationary Orbit (GEO)

-furthest from earth -good for sending television programs to cable operators -good for broadcasting directly to homes -used by IoS

Near-field Communications

-has the smallest range of any short-range wireless network -designed to be embedded into mobile devices such as cell phones and credit cards -transmits pay

Internet Over Satellite (IOS)

-only option available for internet connection -enables users to access the internet via GEO satellites from a dish mounted on the side of there homes

Global Positioning system (GPS)

-supported by MEO -wireless system that utilizes satellites to enable users to determine their position anywhere on the earth

Rogue access point

-unauthorized access point to a wireless network -"evil twin," someone who wishes to access a wireless network for malicious purposes

Wireless Security 4 major threats

1. Roque access point 2. war driving 3. eavesdropping 4. RF (radio frequency) jamming

5 value-added attributes of mobile computing

1. Ubiquity 2. Convenience 3. Instant Connectivity 4. Personalization 5. Localization of products and services

Convenience/ instant Connectivity

Can access the web, intranets, and other mobile devices quickly and easily

Telemetry

Wireless transmission and receipt of data gathered from remote sensors -has numerous mobile computing applications

Wireless Broadband or WiMAX

Worldwide Interoperability for Microwave Access -has wireless access range up to 31 miles compared to 300 ft for Wi-Fi -has data-transfer rate of up to 75 Mbps

hotspot

a connection intended for multiple users (supported within 300 ft or so) provided by a wireless access point

Wireless Fidelity (WiFi)

a medium range wireless local area network (WLAN) basically like a wired LAN but without the cables -uses wireless acces points -produces hotspot

RF (radio frequency) jamming

a person or device, intentionally or unintentionally, interferes with your wireless network transmissions

Mobile Computing

a real-time connection between a mobile device and other computing environment, such as the Internet or a intranet

wireless access point

a transmitter with an antenna that connects to a wired LAN or satellite dish to provide an internet connection

voice portal

a way to access information -a website with audio interface -not websites cause they can be accessed through a standard phone or a cell phone

Radio frequency identification (RFID)

allows manufacturers to attach tags with antennas and computer chips to goods and then track their movement through radio signals.

No need for a Pc

because users can access the internet from smartphones and other wireless devices

Middle Earth Orbit (MEO)

between GEO and LEO -move in coordination with earth -good for GPS devices

Widespread availability of mobile devices

cellphones are everywhere and are spreading throughout the world!!

Low Earth Orbit (LEO)

closest to earth -allow satellite telephones to operate

Personalization

company can customize information and send it to individual consumers as an SMS

Declining Prices

declining price of wireless devices

Eavesdropping

efforts by unauthorized users to access data traveling over wireless networks

Telemetry Applications

ex. remote vehicle diagnosis and preventive maintenance ex. find my iphone

Ultra-wideband

high bandwidth wireless technology with transmission speeds in excess of 100 Mbps -streams multimedia from personal computer to a television

blue tooth

industry specification used to create small personal area networks -wireless handsets -cell phones -portable music players

Localization of products and services

knowing a user's physical location helps a company advertise its product and services

Satellite transmission

make use of communication satellites there are 3 types of these around the earth -GEO, MEO, LEO -high bandwidth -large coverage area -expensive -must have unobstructed line of sight -propaganda delay -must use encryption for security

Ubiquity

mobile device can provide information and communications regardless of the user's location

Wireless sensor networks (WSNs)

networks of intercom meted, battery-powered, wireless sensors called MOTES (analogous to nodes) that are placed into the physical environment.

Satellite Radio (wireless transmission media)

offers uninterrupted, near CD quality music that is beamed to your radio, either at home or in your car, from space

Infrared

red light that is usually not visible to the human eye ex. remote controls

Broad reach

refers to the fact that users Carrying an open mobile device can be reached instantly, even across great distances