Mobile Computing Glossary
IEEE (Institute for
Electrical and Electronic Engineers)
A membership-based organization based in New York City that creates and
publishes technical specifications and scientific publications.
IEEE 802
An Institute of Electrical Engineering standard for interconnecting of
local area networking computer equipment. The IEEE 802 standard describes
the physical and link layers of the OSI reference model.
IEEE 802.1 -- A
specification for media-layer physical linkages and bridging. A
specification for media-layer physical linkages and bridging.
IEEE 802.3 -- An Ethernet
specification derived from the original Xerox Ethernet specifications. It
describes the CSMA/CD protocol on a bus topology using baseband
transmissions. An Ethernet specification
derived from the original Xerox Ethernet specifications. It describes the
CSMA/CD protocol on a bus topology using baseband transmissions.
IEEE 802.4 -- Broadband
and base band bus using token passing as access method, and physical
interface specifications. Broadband and
base band bus using token passing as access method, and physical interface
specifications.
IEEE 802.5 -- A token
ring specification derived from the original IBM Token-Ring LAN
specifications. It describes the token protocol on a star/ring topology
using baseband transmissions. A token
ring specification derived from the original IBM Token-Ring LAN
specifications. It describes the token protocol on a star/ring topology
using baseband transmissions.
IEEE 802.6 -- A token bus
specification for metropolitan area network with star/ring topology using
baseband transmissions. A token bus
specification for metropolitan area network with star/ring topology using
baseband transmissions.
IEEE 802.11 -- A physical
and MAC layer specification for wireless network transmission based on
direct and frequency hopping, SST, and infrared at transmission speeds from
1 to 4 Mbps. This specification includes the basic rate set for fixed
bandwidths supported by all wireless stations (for compatibility) and an
extended rate set for optimal speeds. A
physical and MAC layer specification for wireless network transmission based
on direct and frequency hopping, SST, and infrared at transmission speeds
from 1 to 4 Mbps. This specification includes the basic rate set for fixed
bandwidths supported by all wireless stations (for compatibility) and an
extended rate set for optimal speeds.
IEEE 802.12 -- A
specification for wireless network transmission based on SST. A
specification for wireless network transmission based on SST.
IMTS (Improved Mobile
Telephone Service) (Improved Mobile
Telephone Service)
Cellular telephone predecessor that uses a single central transmitter and
receiver to service a region. A two-way mobile phone system that generally
uses a single high-power transmitter to serve a given area and is
automatically interconnected with a land line telephone system.
In-Band Signaling
Transmission within a frequency range normally used for information
transmission. Contrasted with out-of-band signaling, which uses frequencies
outside the normal range of information-transfer frequencies.
Infrared
Electromagnetic waves whose frequency range is above that of microwave
but below the visible spectrum. LAN systems based on this technology
represent an emerging technology.
IrDA (Infrared Data
Association) (Infrared Data Association)
A group of wireless infrared product vendors that promotes serial infrared
linkages and interoperability between vendor products.
Infrastructure
The physical and local components of a network. Typically, this includes
wiring, wiring connections, attachment devices, network nodes and stations,
interconnectivity devices (such as hubs, Router, gateways, and switches),
operating environment software, and software applications.
IP -- Internet Protocol. Internet Protocol.
IPX -- Internet Packet
Exchange (Novell Netware LAN protocol) Internet
Packet Exchange (Novell Netware LAN protocol)
IS 54 - Interim Standard
developed by CTIA for introduction of TDMA in conjunction with FDMA. Interim
Standard developed by CTIA for introduction of TDMA in conjunction with FDMA.
IS-41 -- TIA cellular
standard for seamless roaming with inter-system handoff, call delivery,
validation, and authentication. TIA
cellular standard for seamless roaming with inter-system handoff, call
delivery, validation, and authentication.
IS-54 -- TIA cellular
standard defining the air interface to TDMA and digital handsets to base
station communications. TIA cellular
standard defining the air interface to TDMA and digital handsets to base
station communications.
IS-95 -- TIA cellular
standard defining the air interface to CDMA and digital handsets to base
station communications. TIA cellular
standard defining the air interface to CDMA and digital handsets to base
station communications.
ISDN - Integrated
Services Digital Network - Integrated
Services Digital Network
ISM -- Instrumentation,
Scientific, and Medical band. Instrumentation,
Scientific, and Medical band.
ISO -- International
Standards Organization. International
Standards Organization.
Ka-band -- A
high-bandwidth satellite wireless communication frequency using the 30 GHz
spectrum. A high-bandwidth satellite
wireless communication frequency using the 30 GHz spectrum.
KHz (Kilohertz) -- A
measure of audio and radio frequency (a thousand cycles per second). The
human ear can hear frequencies up to about 20 KHz. There are 1000 KHz in an
MHz. (Kilohertz) -- A measure of audio
and radio frequency (a thousand cycles per second). The human ear can hear
frequencies up to about 20 KHz. There are 1000 KHz in an MHz.
Laser -- Light
Amplification by Stimulated Emission of Radiation. Light
Amplification by Stimulated Emission of Radiation.
Lease Line -- A dedicated
Common carrier circuit providing point-to-point or multipoint network
connection, reserved for the permanent and private use of a customer . Also
called a Private Line. A dedicated
Common carrier circuit providing point-to-point or multipoint network
connection, reserved for the permanent and private use of a customer . Also
called a Private Line.
LEO -- Low-Earth Orbit
Satellite. Low-Earth Orbit Satellite.
Line of Sight -- The
connection between communication devices characteristic of certain
transmission systems (such as laser, microwave, and infrared systems) in
which no obstructions on a direct path between transmitter and receiver may
exist. The connection between
communication devices characteristic of certain transmission systems (such
as laser, microwave, and infrared systems) in which no obstructions on a
direct path between transmitter and receiver may exist.
Local Loop -- The line
from a telephone subscriber’s premises to the telephone company CO.
Location Directory -- The
repository of information specifying the current forwarding address of a
collection of mobile hosts to be accessed by the redirectors
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