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There are 42 names in this directory beginning with the letter W.
W-ATM: Wireless Asynchronous Transfer Mo
Wireless ATM network (W-ATM) was a concept of using wireless as physical layer to transmit ATM cells. This concept never took off.

W-TDMA: Wideband Time Division Multiple
Wideband Time Division Multiple Access (W-TDMA) is a technique based on time division transmission which is similar to that used by GSM but provides a much higher transmission rate. It was submitted as a solution for UMTS radio interface, but was rejected.

WAE: Wireless Application Environment
The Wireless Application Environment (WAE) is the top most level in the Wireless Application Protocol (WAP) suite, which combines both the WWW and Mobile Telephony technologies. WAE provides the operators and service providers an interoperable environment on which they can build applications and services for handheld client devices. WAE includes the micro-browser that contains functionality for using not only WML and WML Script as previously stated, but also Wireless Telephony Application, namely WTA and WTAI -- telephony services and programming interfaces as well as content formats including well-defined data formats, images, phone book records and calendar information.

Walsh Code
Walsh Code is a group of spreading codes having good autocorrelation properties and poor crosscorrelation properties. Walsh codes are the backbone of CDMA systems and are used to develop the individual channels in CDMA. For IS-95, here are 64 codes available. Code 0 is used as the pilot and code 32 is used for synchronization. Codes 1 though 7 are used for control channels, and the remaining codes are available for traffic channels. Codes 2 through 7 are also available for traffic channels if they are not needed. For cdma2000, there exists a multitude of Walsh codes that vary in length to accommodate the different data rates and Spreading Factors of the different Radio Configurations.

WAP Forum
The WAP Forum has consolidated into the Open Mobile Alliance (OMA) and no longer exists as an independent organization.

WAP: Wireless Access Point
A wireless access point (WAP), also known as Access Point (AP), is a device that "connects" wireless communication devices together to create a wireless network. WAPs act as a central transmitter and receiver of WLAN radio signals. Access points used in home or small business networks are generally small, dedicated hardware devices featuring a built-in network adapter, antenna, and radio transmitter. Access points support Wi-Fi wireless communication standards. Many WAPs can be connected together to create a larger network that allows "roaming".

WAP: Wireless Application Protocol
The Wireless Application Protocol (WAP) is a set of specifications, developed by the WAP Forum, that lets developers using Wireless Markup Language build networked applications designed for handheld wireless devices. WAP was designed to work within the constraints of these devices: a limited memory and CPU size, small, monochrome screens, low bandwidth and erratic connections. WAP browsers are intended to be implemented on small mobile devices such as cell phones, pagers, and PDAs. Instead of developing content in HTML and JavaScript, WAP developers use WML and WMLScript.

War chalking
War chalking refers to marking buildings or sidewalks with chalk to show others where it's possible to access an exposed company wireless network. These access points are typically found through war drivin

War driving
War driving (wardriving) is the process of traveling around looking for wireless access point signals that can be used to get network access. Some computer hackers are content to simply map any open, unsecured WLANs they find. Others have adopted the practice of warchalking, tagging nearby pavement to allow others to tap in and steal bandwidth from those hotspots.

WASP: wireless application service provi
Wireless Application Service Provider (WASP) provides hosted wireless applications so that companies will not have to build their own sophisticated wireless infrastructures.

Wavelength
is the length of one complete wave of an alternating or vibrating phenomenon, generally measured from crest to crest or from trough to trough of successive waves.

WBMP: Wireless Bitmap
Wireless Bitmap (WBMP) is WAP graphic format optimized for mobile computing devices. A WBMP image is identified using a TypeField value, which describes encoding information (such as pixel and palette organization, compression, and animation) and determines image characteristics according to WAP documentation.

WCDMA: Wideband-Code Division Multiple A
Wideband Wideband-Code Division Multiple Access(W-CDMA or WCDMA), also known as UMTS in Europe, is a 3G standard for GSM in Europe, Japan and the United States. It's also the principal alternative being discussed in Asia. It supports very high-speed multimedia services such as full-motion video, Internet access and video conferencing. It uses one 5-MHz channel for both voice and data, offering data speeds of up to 2 Mbps.

WDF: Wireless Data Forum
Wireless Data Forum (WDF) is an industry group based in New Zealand dedicated to promote and educate New Zealand companies on many options and solutions available to them through the use of Wireless Data.

WDP: Wireless Datagram Protocol
The Wireless Datagram Protocol (WDP), a protocol in WAP architecture, covers the Transmission Layer Protocols in an Internet model. As a general transport service, WDP offers to the upper layers an invisible interface independent of the underlying network technology used. In consequence of the interface common to transport protocols, the upper layer protocols of the WAP architecture can operate independent of the underlying wireless network. By letting only the transport layer deal with physical network-dependent issues, global interoperability can be acquired using mediating gateways.

WDS: Wireless Distribution System
Wireless Distribution System (WDS) is a technology that enables access points to communicate with one another in order to extend the range of a wireless network. WDS is appearing in 802.11g-based access points.

WECA: Wireless Ethernet Compatibility Al
Wireless Ethernet Compatibility Alliance (WECA) is the former name of the Wi-Fi Alliance of vendors promoting 802.11 wireless networking standards and compatibility.

WEP: Wired-Equivalent Privacy
Wired Equivalent Privacy (WEP) is a security protocol, specified in the IEEE Wireless Fidelity (Wi-Fi) standard, 802.11b, that is designed to provide a wireless local area network (WLAN) with a level of security and privacy comparable to what is usually expected of a wired LAN. WEP is based on a security scheme called RC4 that utilizes a combination of secret user keys and system-generated values. The original implementations of WEP supported the so-called 40-bit encryption, having a key of length 40 bits and 24 additional bits of system-generated data (64 bits total). Research has shown that 40-bit WEP encryption is too easy to decode, and consequently product vendors today employ 128-bit encryption (having a key length of 104 bits, not 128 bits) or better.

Wi-Fi Alliance
Wi-Fi Alliance is a non-profit international association formed in 1999 to certify interoperability of WLAN products based on the IEEE 802.11 specification. Currently, the Wi-Fi Alliance has over 200 member companies from around the world, and over 1,000 products have received Wi-Fi certification since the certification began in March of 2000. The goal of the Wi-Fi Alliance's members is to enhance the user experience through product interoperability.

Wi-Fi: Wireless Fidelity
Wireless Fidelity (WiFi or Wi-Fi), originally Nick named for 802.11b for wireless LAN with bandwith up to 11 Mbps, now refers to the entire wireless LAN technologies including 802.11a, 802.11b, 802.11g and 802.11n etc. Wi-Fi is actually the industry name for wireless LAN (WLAN) communication technology related to the IEEE 802.11 family of wireless networking standards.

WiBro
WiBro, standing for Wireless Broadband, is a wireless broadband internet technology being developed by the Korean telecoms industry. In February, 2002, the Korean government allocated 100 MHz of electromagnetic spectrum in the 2.3 GHz band, and in late 2004, WiBro Phase 1 was standardized by the TTA (Telecommunications Technology Association) of Korea.

WiDEN:Wideband Integrated Dispatch Enhan
Wideband Integrated Dispatch Enhanced Network (WiDEN) is a software upgrade developed by Motorola for its iDEN-enhanced specialised mobile radio (or ESMR) wireless telephony protocol. WiDEN allows compatible subscriber units to communicate across four 25 kHz channels combined, for up to 100 kbit/s of bandwidth. The protocol is generally considered as a 2.5G wireless cellular technology.

WIM: WAP Identity Module
WAP Identity Module (WIM) is the security module implemented in the SIM card for WAP applications. WIM provides security services for WAP applications, and allows you to use digital signature. SIM cards with security module are provided by the SIM card issuer

WiMax
WiMax, abreviated from Worldwide Interoperability for Microwave Access, is a popular name of the 802.16 wireless metropolitan-area network standard, including both 802.16-2004 for fixed WiMAX and 802.16-2005 for mobile WiMAX. WiMax has a range of up to 31 miles. Data rates for WiMax can reach up to 75 Mbps (Fixed) or 15 Mbps (Mobile). A number of wireless signaling options exist ranging anywhere from the 2 GHz range up to 66 GHz. WiMax is primarily aimed at making broadband network access widely available without the expense of stringing wires (as in cable-access broadband) or the distance limitations of Digital Subscriber Line. WiMax technology can deliver high-speed Internet access to rural areas and other locations. WiMax also offers an alternative to satellite Internet services.

WiMedia Alliance
WiMedia Alliance is an industrial association with a focus on UWB (Ultra WideBand) wireless technologies to promote and enable the rapid adoption and standardization of UWB worldwide for high-speed wireless, multimedia-capable personal-area connectivity in the PC, CE and mobile market segments; to provide a neutral and open forum for multiple industry segments to establish requirements, specifications and best practices for usability and interoperability; to promote worldwide UWB spectrum regulations; and to develop, maintain, enhance and reference technical specifications.

Wireless Bridge
Wireless Bridge is a networking bridge used to connect two or more separate networks. A wireless bridge functions in the same way but can be used in situations in which running a wire or cable would be impractical or prohibitively expensive, such as creating a 10-mile point-to-point link.

Wireless FireWire
Wireless FireWire, also known as wireless 1394, is a wireless version of the high speed FireWire communications protocol defined in the IEEE 1394. It allows multiple FireWire devices to communicate wirelessly over IEEE 802.15.3 (UWB) Wireless Personal Area Networks (WPANs). The wireless 1394 specification adapts the IEEE 1394 and P1394.1 bridging standards to the high bandwidth wireless network connectivity enabled by IEEE 802.15.3.

Wireless router
Wireless routers are actually routers with Ethernet plus wireless access points so that they have both wired and/or wireless at the same time. Another combination is to build a DSL or cable modem with the wireless access point, in which the wireless access point is used to communicate with local PCs and other devices and the DSL and cable modem will communicate with the Inernet.

WLAN: Wireless local-area networks (Wire
Wireless local-area networks (WLAN or wireless LAN) use radio waves to connect a user device to a LAN, which extends an existing wired local area network. WLAN provides Ethernet connections over the air and operate under the 802.11 family of specifications developed by the IEEE. WLANs are built by attaching a device called the access point (AP) to the edge of the wired network. Clients communicate with the AP using a wireless network adapter similar in function to a traditional Ethernet adapter. The WLAN technology is defined by the IEEE 802.11 family of specifications, namely, 802.11, 802.11a, 802.11b, 802.11g and 802.11n. All use the Ethernet protocol and CSMA/CA (carrier sense multiple access with collision avoidance instead of CSMA/CD) for path sharing.

WLL: Wireless Local Loop
Wireless Local Loop (WLL), also called radio in the loop (RITL) or fixed-radio access (FRA) or fixed-wireless access (FWA), is the use of wireless connections as the last mile for delivering plain old telephone service (POTS) to customers.

WMF: Wireless Message Format
Wireless Message Format (WMF) is a standard format for presenting data received through a paging system to mobile computers. The application at the MED uses this format to encode binary data and control information to be sent to a remote device. This information is received completely intact by the MCD.

WML: Wireless Markup Language
Wireless Markup Language (WML), based on HTML and XML, delivers Internet content to small wireless devices, such as browser-equipped cellular phones and handheld devices, which typically have very small displays, slow CPUs, limited memory capacity, low bandwidth and restricted user-input capabilities. WML demands less memory and processing power from browsers than HTML and JavaScript. WML also includes features that tailor it for the relatively small display sizes of today's wireless devices. WML and HTML differ in significant ways. Although WML strips some features from HTML and co-opts others, WML also incorporates some powerful programming constructs not found in HTML like variables, tasks, and events. WML implements a stricter tag syntax than HTML and includes a DTD for use with XML parsers

WOS: Wireless Office Systems
Wireless Office Systems (WOS) is a technology that allows the user to transfer calls to a mobile telephone.

WPA2: Wi-Fi Protected Access 2
Wi-Fi Protected Access 2 (WPA2) is an enhanced version of WPA. It is the official 802.11i standard that was ratified by the IEEE in June, 2004. It uses the Advanced Encryption Standard instead of TKIP (see above). AES supports 128-bit, 192-bit and 256-bit keys.

WPABX: Wireless Private Automatic Branch
Wireless Private Automatic Branch Exchange (WPABX) is a customer premise telephone switching system using wireless technology to link the individual user stations to the central switching unit. The WPABX is capable of interfacing to a telephone central office with trunk groups and routing calls based on a 3- or 4-digit telephone extension number.

WPAN: Wireless Personal-Area Network
Wireless Personal-Area Network (WPAN) is a personal area network using wireless connections. WPAN is used for communications among devices such as telephones, computer and its accessories, as well as personal digital assistants, within a short range. The reach of a PAN is typically within 10 meters. Technologies enabling WPAN include Bluetooth, ZigBee, Ultra-wideband(UWB), IrDA, HomeRF, etc.

WRAN: Wireless Regional Area Network
Wireless Regional Area Network (WRAN) technology targets at wireless broadband (remote) access for geographically dispersed, sparsely populated areas. The transmission range can be up to 100Km, Non Line of Sight (NLOS) due to use of TV broadcast bands as License Exempt (LE) spectrum. The WRAN technology is useful for remote access to grid computer sites and to independent telcos operating in developing countries, rural or non- metropolitan areas. WRAN specifications are defined by the IEEE802.22 working committee.

WSP: Wireless Session Protocol
The Wireless Session Protocol (WSP), a protocol in the Wireless Application Protocol (WAP) suite, provides the Wireless Application Environment a consistent interface with two services: connection-oriented service to operate above the Transaction Layer Protocol (WTP) and a connectionless service that operates above either secure or non-secure datagarm service (WDP). Currently, the protocols of the WSP family provide HTTP/1.1 functionality and semantics in a compact encoding, long lived session state with session suspend-and-resume capabilities, a common facility for reliable and unreliable data push as well as a protocol feature negotiation. These protocols are optimised to be used in low-bandwith bearer networks with relative long latency in order to connect a WAP client to a HTTP server.

WTLS: Wireless Transport Layer Security
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.


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