gFlashcards

are small enough to carry or wear, have sufficient computing power to perform productive tasks and can communicate wirelessly with internet.

is the standard that enables wireless devices to access Web-based information and services

WIRELESS TRANSMISSION MEDIA

Widely used for high-volume, long-distance, point to point communication. Point to Point has 2 characteristic 1. transmitter and receiver must be in view of each other 2. transmission itself must be tightly directed from transmitter to receiver

WIRELESS TRANSMISSION MEDIA

Systems make use of communication satellites: three types of satellites, each in a different orbit.

WIRELESS TRANSMISSION MEDIA

Offers uninterrupted, near CD quality music that is beamed to your radio from space. XM satellite radio and Sirius.

WIRELESS TRANSMISSION MEDIA

A wireless system that uses MEO satellites to enable users to determine their position anywhere on the earth.

WIRELESS TRANSMISSION MEDIA

Uses radio-wave frequencies to send data directly btwn transmitters and receivers.

WIRELESS TRANSMISSION MEDIA

Is a red lingh that is NOT commonly visible to human eyes: common uses are in remote controls units for TVs, VCR. DVD.. or communication btwn mobile phone, or PC's communicating to peripherals like printers.

Generally have a range 30 meters or less

Bluetooth, Ultra-wideband, Near field Communication

BLUETOOTH - can link up to 8 devices with 30 foot area and transmit 2.1 MBPS

UlTRA-WIDEBAND - high wide-band wireless tech. with transmission speed of 100 MBPS

NEAR-FIELD COMMUNICATION - Is shortest range of any wireless network, embedded in mobile devices and credit cards.

Wireless local area network (WLANs) . Most common IS Wi-Fi

WIRELESS ACCESS POINT

HOTSPOT

WIRELESS NETWORK INTERFACE CARD

WIRELESS ACCESS POINT - A transmitter with a antenna

HOTSPOT- a geographical perimeter within which a wireless access point provides wireless access for users

WIRELESS NETWORK INTERFACE CARD- enables mobile devices to communicate wirelessly

Connects users to each other and to the internet over geographically dispersed distance.

CELLULAR RADIO ( 1G, 2G, 2.5G, 3G AND 4G)

WIRELESS BROADBAND OR WiMax

CELLULAR RADIO - uses radio waves to provide two way communcation 1G, analog and low band width

2G, digital signals for voice and data up to 10 kbps

2.5G digital signals for voice and data up to 144 kbp

3G digital signals for voice and data up to 384 kbp when moving, 128 when moving in car and 2 Mbps with statonary

4G- still under development

WIRELESS BROADBAND OR WiMax - access range up to 50KM and data transfer rate up-to 75 Mbps

Refers to real time, wireless connection btwn mobile device and other computing environment , eg internet and intranet

Two characteristics -

Mobility : users can initiate a real time contact

Broad Reach - users can be reached instantly

Refers to electronic commerce transactions that are conducted in a wireless environment , via internet

Wide spread availability of mobile devices

No need for PC

The "Cell Phone Culture"

Declining Prices

Bandwidth improvement

MOBILE PORTALS - provides content and services for mobile users that include news, sports, email, entertainment ext.

VOICE PORTALS - Is a web-site with a audio interface and can also be accessed through a standard phone or cell phone

Is the wireless transmission and receipts of data gathered from remote sensors eg GM On Star Systems

Pervasive computing (also called ubiquitous computing) is the growing trend towards embedding microprocessors in everyday objects so they can communicate information. The words pervasive and ubiquitous mean "existing everywhere." Pervasive computing devices are completely connected and constantly available.