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A network that interconnects users with computer resources in a geographic area or region larger than that covered by even a large local area network (LAN) but smaller than the area covered by a wide area network (WAN).
(millions of bits per second or megabits per second)
(network interface card)
P2P (peer-to-peer) network
PAN (personal area network)
(personal computer memory card international association)
A measure of bandwidth (the total information flow over a given time) on a telecommunications medium. Depending on the medium and the transmission method, bandwidth is also sometimes measured in kbps (thousands of bits or kilobits per second) range or the Gbps (billions of bits or gigabits per second) range.
A technology that enables short-range communication networks between consumer devices incorporating an NFC interface, and is set to greatly improve the way consumers access data and services wirelessly.
A type of PC adapter card that works without wires (Wi-Fi) or attaches to a network cable to provide two-way communication between the computer and network devices such as a hub or switch.
Also known as ad-hoc mode, this is a network of computers that has no server or central hub. Each computer acts both as a client and network server. It can be either wireless or wired.
A casual, close-proximity network where connections are made on the fly and temporarily. Meeting attendees, for example, can connect their Bluetooth-enabled notebook computers to share data across a conference-room table, but they break the connection once the meeting is over.
An industry group organized in 1989 to promote standards for a credit card-size memory or I/O device that would fit into a personal computer, usually a notebook or laptop computer. The PCMCIA 2.1 Standard was published in 1993. As a result, PC users can be assured of standard attachments for any peripheral device that follows the standard. The
(personal communications services)
(personal digital assistant)
(personal digital cellular)
PHS (personal handy system)
(plain old telephone system) PSK (phase-shift keying)
Plug and Play
initial standard and its subsequent releases describe a standard product, the PC card.
A wireless phone service similar to cellular telephone service but emphasizing personal service and extended mobility. It is sometimes referred to as digital cellular (although cellular systems can also be digital). As a mobile user moves around, the user’s phone signal is picked up by the nearest antenna and forwarded to a base station that connects to the wired network.
A term for any small mobile handheld device that provides computing and information storage and retrieval capabilities for personal or business use, often for keeping schedule calendars and address book information. The term ‘handheld’ is a synonym. Many people use the name of one of the popular PDA products as a generic term. These include Hewlett-Packard’s Palmtop and 3Com’s PalmPilot.
A TDMA-based Japanese standard operating in the 800 and 1500 MHz bands
A TDD TDMA Japanese-centric system that offers high speed data services and superb voice clarity. It is really a WLL system with only 300 m to 3 km coverage.
This provides a standard analogue telephone service.
A method of transmitting and receiving digital signals in which the phase of a transmitted signal is varied to convey information.
A feature of a computer system which enables automatic configuration of addons and peripheral devices like wireless PC cards, printers, scanners and multimedia devices.
RF (radio frequency)
(space division multiple access) SDR (software defined radio)
(subscriber identity module) SoHo
Frequency within the electromagnetic spectrum associated with radio-wave propagation.
The distance a wireless signal can reach. A device that receives a radio signal, amplifies it and retransmits it in a new direction. Repeaters are used in wireless networks to extend the range of base-station signals, thereby expanding coverage, within limits, more economically than by building additional base stations. The ability to move from one access point coverage area to another without losing connectivity.
Thought of as a component of 3G digital cellular/UMTS
Wireless communication in which the transmitter modulation is generated or defined by a computer, and the receiver uses a computer to recover the signal intelligence.
A smart card inserted into GSM phones that contains telephone account information. It lets you use a borrowed or rented GSM phone as if it were your own. SIM cards can also be programmed to display custom menus on the phone’s readout.
A term for the small office or home office environment and business culture. A number of organizations, businesses and publications now exist to support people who work or have businesses in this environment. The term ‘virtual office’ is sometimes used as a synonym.