Wireless

Wireless technology is rapidly evolving, and is playing an increasing role in the lives of people throughout the world. In addition, ever-larger numbers of people are relying on the technology directly or indirectly. (It has been suggested that wireless is overused in some situations, creating a social nuisance.) More specialized and exotic examples of wireless communications and control include:

  • Global System for Mobile Communication (GSM) — a digital mobile telephone system used in Europe and other parts of the world; the de facto wireless telephone standard in Europe

  • General Packet Radio Service (GPRS) — a packet-based wireless communication service that provides continuous connection to the Internet for mobile phone and computer users

  • Enhanced Data GSM Environment (EDGE) — a faster version of the Global System for Mobile (GSM) wireless service

  • Universal Mobile Telecommunications System (UMTS) — a broadband, packet-based system offering a consistent set of services to mobile computer and phone users no matter where they are located in the world

  • Wireless Application Protocol (WAP) — a set of communication protocols to standardize the way that wireless devices, such as cellular telephones and radio transceivers, can be used for Internet access

  • i-Mode — the world’s first “smart phone” for Web browsing, first introduced in Japan; provides color and video over telephone sets

Wireless can be divided into:

  • Fixed wireless — the operation of wireless devices or systems in homes and offices, and in particular, equipment connected to the Internet via specialized modems
  • Mobile wireless — the use of wireless devices or systems aboard motorized, moving vehicles; examples include the automotive cell phone and PCS (personal communications services)
  • Portable wireless — the operation of autonomous, battery-powered wireless devices or systems outside the office, home, or vehicle; examples include handheld cell phones and PCS units
  • IR wireless — the use of devices that convey data via IR (infrared) radiation; employed in certain limited-range communications and control systems

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