H - Definitions

  • H

    handheld

    A handheld computer is a computer that can conveniently be stored in a pocket (of sufficient size) and used while you're holding it.

  • handie talkie (HT, walkie talkie, handheld)

    A handie talkie, often referred to by its abbreviation, HT, is a handheld, portable two-way radio transceiver.

  • handoff

    In a cellular telephone network, handoff is the transition for any given user of signal transmission from one base station to a geographically adjacent base station as the user moves around.

  • Handspring

    Handspring was a company that manufactured portable computer/organizer hardware.

  • handtop (ultra personal computer)

    A handtop is a full-featured portable computer that is slightly larger than a PDA, but much smaller than a laptop.

  • HDML (Handheld Device Markup Language)

    HDML (Handheld Device Markup Language) - often compared to Wireless Markup Language (WML) - is a language that allows the text portions of Web pages to be presented on cellular telephones and personal digital assistants (PDA) via wireless access.

  • helical antenna

    A helical antenna is a specialized antenna that emits and responds to electromagnetic fields with rotating (circular)polarization.

  • hertz

    Hertz is a unit of frequency (of change in state or cycle in a sound wave, alternating current, or other cyclical waveform) of one cycle per second.

  • Hierarchical Mobile IPv6 (HMIPv6)

    Hierarchical Mobile IPv6 (HMIPv6) is the proposed enhancement of Mobile Internet Protocol versions 6 (MIPv6) that is designed to reduce the amount of signaling required and to improve handoffspeed for mobile connections.

  • HiperLAN

    MEO satellite"HiperLAN is a set of wireless local area network (WLAN) communication standards primarily used in European countries.

  • HomePNA

    HomePNA is an industry standard for interconnecting computers within a home using existing telephone lines and registered jack.

  • horn antenna

    A horn antenna is used for the transmission and reception of microwave signals.

  • hot spot

    For users of portable computers equipped for wireless, a hot spot (or hotspot) is a wireless LAN (local area network) node that provides Internet connection and virtual private network (VPN) access from a given location.

  • hot zone

    A hot zone is a wireless access area created by multiple hot spots located in close proximity to each other.

  • HSDPA (High-Speed Downlink Packet Access)

    High-Speed Downlink Packet Access (HSDPA) is a packet-based mobile telephony protocol used in 3G UMTS radio networks. (...Continued)

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