Mobile Computing Glossary
MAN (Metropolitan Area Network)
A network that spans buildings, or city blocks, or a college,
or corporate campus. Optical fiber repeaters, bridges, routers, packet switches, and PBX
services usually supply the network links.
MASC - Mobitex Asynchronous Communication -
Asynchronous link level protocol on Mobitex.
Mbps -- Megabytes per second --.speed of data
MCSS (Mobile Communications Server Switch)
A hardware/software configuration that provides
communications connection and message switching functionality. It sits between the
wireless network and information servers. See chapter 11 for further information.
MCP/1 - Mobitex Compression Protocol
MDBS (Mobile Data Base Station - a CDPD term)
The hardware used by a cellular provider to convert the data
streams into a valid signal and route cellular switched data calls through the wired phone
network or to the cellular destination. This station manages and accesses the radio
interface from the network side. It relays and retransmits packets sent from the Mobile
Data Intermediate System.
MES (Mobile End System)
The portable wireless computing device that can roam from
site to cell while communicating with the MDBS via CDPD. An end system that accesses the
CDPD network through the airlink interface.
MHX- Mobitex Main Hierarchical Exchange - Part of Mobitex
network hierarchy. Each MHX exchanges information with other MHXs.
MIB (Management Information Base) - an SNMP term
Electromagnetic waves in 1 to 30 GHz range
MIN- Mobile Identification Number
MMS - Multimedia Message Service - It
is an evolutionary upgrade EMS which is an upgrade from SMS. Short Message
Service is a two-way text-based message service on primarily GSM network in
Europe. EMS (Enhanced Message Service) is an upgrade of SMS proposed
by Ericsson, Alcatel, Siemens and Motorola. EMS allows graphics, images,
ring tones, etc. EMS provides an important evolutionary step between
SMS and full Multimedia Messaging Service (MMS) of future. Search on our
home page for EMS.
MMTF (Mobile Management Task Force)
A vendor organized body that has undertaken to create SNMP
based MIB for mobile network management
MPAK - Mobitex packet that is routed through Mobitex
network. A 512 octet of user data.
MOX - Mobitex Area Exchange - A node in the internal
MHz - Megahertz -- measures frequency in million
cycles per second
MNP (Microcom Network Protocols)
A set of modem-to-modem protocols that provide error
correction and compression.
Microcom Network Protocols for cellular or wireless
transmission applying compression, error detection and error correction, data rate
fallback, and readjustment.
Microcom Network Protocols with simple data compression.
Dynamically arranges for commonly occurring characters to be transmitted with fewer bits
than rare characters. It takes into account changing character frequencies as data flows.
Also encodes long runs of the same character. Typical compresses text by 35 percent.
MPT/1 - Mobitex Transport Protocol
MPAK - Mobitex Packet
MSA (Metropolitan Statistical Area)
The 30 U.S. urban areas (markets) as defined by the FCC,
using SMSA (Standard Metropolitan Statistical Area) data. All are licensed for two
cellular operators, and almost all have both operators on the area. MSAs comprise
76% of the U.S. population, but only 22% of its land surface area. See also
MTSO (Mobile Telephone Switching Office)
The cellular systems switching computer, located
between a cell site and a conventional telephone switching office.
NAMPS (Narrow Band Advanced Mobile Phone System)
Using a radio frequency transmission on a single, preset
Narrow Band - PCS frequency in 900-931 MHz range for
NDIS (Network Device Independent Specification)
A Microsoft network interface specification for operating
system and protocol independent device drivers. An effort to create a standard for
bridging different types of network adapter cards and multiple protocol stacks. This
network-level protocol is supported by IBM LAN Manager and new Microsoft networking
products, such as MS Windows for Workgroups and NTAS.
NIC (Network Interface Card)
The network access unit that contains the hardware, software,
and specialized PROM information necessary for a station to communicate across the
network.. Usually referenced as Network Interface Controller.
NOS (Network Operating System)
A platform for networking services that combines operating
system software with network access.
ODI (Open Data-link Interface)
A protocol that supports media- and protocol-independent
communication by providing a standard interface allowing network layer protocols to share
hardware without conflict. Presently used in PC software, mostly.
OLTP - On-Line Transaction Processing
PAN - Personal
Area Network - a wireless network in a small geographical area like a house
- Bluetooth and HomeRF technologies are
in the same space
PCCA - Portable Computer and Communications
Association - A non-profit association of vendors to develop and promote
software and hardware for mobile computing applications
PC Card Standard - Latest PCMCIA specification PCMCIA
5.0. Adds support for low-voltage 3.3 volt operation, DMA, multi-function capability, and
CardBUS -that provides higher performance, bus mastering and 32-bit data path.
PCMCIA (Personal Computer Memory Card International
A standard for a computer plug-in, credit card-sized card
that provides about 90 percent compatibility across various platforms, BIOS, and
PCS (Personal Communications Services)/ PCN
(Personal Communications Network)
A term used to describe emerging wireless/portable network
technology where subscribers carry their own personal communication numbers with them, and
the system locates them wherever they are.
POP -- Point-Of-Presence
POPS -- One unit of population. The pops concept is
used to measure relative market sizes.
POTS -- Plain Old Telephone Service.
PSAP (Public Safety Answering Points) -
See Enhanced 911 requirement of public safety officials. Go to www.apco.org
- Enhanced 911 allows precise originating location of 911 emergency call.
PSTN (Public Switched Telephone Network)
The telecommunications network traditionally encompassing
local and long distance land line carriers and now also including cellular carriers.
Refers to the telephone network.
PTC - Portable Transaction Computer
A term used in manufacturing, distribution and warehousing
industry to denote portable computers equipped with scanners, bar code readers or a pen.