The Wireless Transport Layer Security (WTLS) protocol, protocol in the Wireless Application Protocol (WAP) suite, is based on Transport Layer Security (TLS) or formely known as Secure Sockets Layer (SSL). It is designed to be used with other WAP protocols and to support narrow-band networks. It uses data encryption with a method that is negotiated at the start of the session to provide privacy, data integrity, authentication and denial-of-service protection. The latter is needed in cases when data is replayed or not properly verified. When that happens, WTLS detects the misuse and rejects the data in order to make many typical denial-of-service attacks harder to accomplish.
WTP: Wireless Transaction Protocol
The Wireless Transaction Protocol (WTP), a protocol in the Wireless Application Protocol (WAP) suite, operates efficiently over either secure or non-secure wireless datagram networks. It provides three different kinds of transaction services, namely, unreliable one-way, reliable one-way and reliable two-way transactions. This layer also includes optional user-to-user reliability by triggering the confirmation of each received message. To reduce the number of messages sent, the feature of delaying acknowledgements can be used.
WUSB: Wireless USB
Wireless USB (WUSB) is the wireless extension to USB (Universal Serial Bus) intended to combine the speed and security of wired technology with the ease-of-use of wireless technology. Wireless USB, based on Ultra-WideBand (UWB) defined by IEEE 802.15.3, is capable of sending 480 Mbps or even higher bandwidth at distances up to 3 meters, and 110 Mbps at up to 10 meters. It operates in the 3.1–10.6 GHz band-range and spreads communications over an ultra-wideband of frequencies.
WWAN: Wireless WAN
Wireless Wide Area Network (WWAN) is a wireless network that uses cellular network technologies such as GPRS / CDMA2000 / GSM / CDPD / Mobitex to transfer data. These cellular technologies are offered regionally, nationwide, or even globally and are provided by a wireless service provider. Various computers now have integrated WWAN capabilities with a cellular radio (GSM/CDMA) built in, which allows the user to send and receive data via mobile wireless.
X-Band
X-band is the bandwith between 7 GHz to 8 GHz, which usually is used by military satellites.
Yagi Antenna
Yagi Antenna is an antenna type that radiates in only a specific direction. Yagi antennas are used only in point-to-point situations.
ZDO: ZigBee Device Object
ZigBee Device Object (ZDO), a protocol in the ZigBee protocol stack, is responsible for overall device management, and security keys and policies. The ZDO is like a special application object that is resident on all ZigBee nodes. ZDO has its own profile, known as the ZigBee Device Profile (ZDP), which the application end points and other ZigBee nodes can access.
ZigBee
ZigBee, defined in the IEEE 802.15.4, is the technology used in the low data rate Wireless Personal Area Network (WPAN) for home control, building automation industrial automation. ZigBee covers up to 330 feet (about 100 meters) in the bandwidth of 20 to 250 kbps.
Zone Paging
Zone Paging is a feature in many paging systems that allows you to page a specific department or an area without disturbing other people.
