Airvana: Technology

1xRTT: A 3G Mobile Wireless technology based on CDMA that doubles the voice capacity of current CDMA mobile systems, and adds packet data capability, with a peak downlink speed of 153 kbps.
2G: (Second Generation) - Generic name for mobile wireless systems that provide voice services using digital circuit switched technologies. GSM and CDMA IS-95 are the most popular 2G standards.
3G: (Third Generation) - Generic name for mobile wireless systems used for offering advanced voice and data services, the first two generations refer to the existing analog and digital cellular networks respectively. W-CDMA, 1xRTT and 1xEV-DO are the most popular 3G standards.
3GPP: A global standards body that is developing 3G standards for the W-CDMA air interface technology.
3GPP2: A global standards body that is developing 3G standards for the CDMA2000 family of air interface technologies including 1xRTT and 1xEV-DO
Air Interface: The Air Interface is the part of a mobile wireless standard that defines the interoperability protocol between the subscriber terminal and the radio access network.
ATM (Asynchronous Transfer Mode): A telecommunications method for relaying images, sound and text simultaneously at very high speeds.
Base Station: Synonymous with Base Transceiver Station (BTS)
Base Station Controller (BSC): A wireless network equipment that controls Base Stations.
Base Transceiver Station: The Base Transceiver Station (BTS) is the section of mobile network, which is responsible for transmitting to and receiving radio signals from the mobile phone. The BTS carries out transcoding of voice channels or packet data, allocates radio transmission resources to mobiles, sends pages for incoming connections, and many other tasks related to the radio network. A large metropolitan area typically has hundreds of BTSs, located on rooftops or next to transmission towers.
CDMA: Code Division Multiple Access - A global Mobile Wireless technology based on a method of sharing frequency among many users by encrypting each user's signal using a different code.
CDMA IS-95: CDMA IS-95 is the first end-to-end mobile voice system based on Code Division Multiple Access Technology. IS-95 offers 8-10 times higher voice capacity than analog cellular systems such as AMPS and 4-5 times higher voice capacity than GSM.
CDMA2000 1X: Synonymous with 1xRTT.
CDMA2000 1xEV-DO: CDMA2000 1xEV-DO Rev 0 (1xEvolution Data Optimized) is a third-generation (3G) broadband wireless packet data technology optimized for high-speed mobile data applications. Standardized by the TIA as TIA/EIA/IS-856 “CDMA2000 High Rate Packet Data Air Interface Specification”, EV-DO Rev 0 technology is being used by service providers around the world to deploy broadband wireless data networks or to add or increase the data capacity of their existing CDMA IS-95 or 1xRTT networks.

CDMA2000 1xEV-DO Rev A: CDMA2000 1xEV-DO Rev A is a third-generation (3G) broadband wireless packet data technology that will provide the foundation for next-generation, IP-based, broadband wireless voice and data networks. EV-DO Rev A extends the capabilities of EV-DO networks by increasing connection speeds to 3.1 Mbps and providing the technology to support real-time voice, video and multimedia applications.
Ethernet: The world's most widely deployed standard for Local Area Networking; it operates at 10, 100,1,000 and 10,000 Mbps.
Frame Relay: A widely used connection oriented packet-networking technology.
HSDPA: HSDPA or High Speed Downlink Packet Access is a high-speed data service feature introduced in Release 5 (R5) of the UMTS Standard. Operating in 5 MHz of spectrum, HSDPA provides a theoretical peak downlink data rate of 14.4 Mbps and a peak uplink rate of 384 kbps peak downlink data rate of 14.4 Mbps and a peak uplink rate of 384 kbps.
IP: The Internet Protocol, defined in STD 5, RFC 791, is the network layer for the TCP/IP Protocol Suite. It is a connectionless, best-effort packet switching protocol.
Media Gateway (MGW): A Media Gateway acts as a translation unit between disparate telecommunications networks such as PSTN; Next Generation Networks; 2G, 2.5G and 3G radio access networks or PBX. Media Gateways enable multimedia communications across Next Generation Networks over multiple transport protocols such as ATM and IP.
Metropolitan Ethernet: A low cost Wide Area Network technology that transports user data as Ethernet frames over an optical network, typically in a metropolitan area.
PSK: Phase Shift Keying; a modulation technique.
Public Switched Telephone Network (PSTN): The regular telephone network, or any part of it. Along with telephone services, this network also carries data and other non-telephone services via conventional switched telephone circuits using regular telephone signaling.
Push-to-talk: Push-To-Talk (PTT), or Push-to-talk over Cellular (PoC), is a two-way communication service that works like a "walkie talkie". When a normal cell phone call is full-duplex, meaning both parties can hear each other at the same time, PTT is half-duplex, meaning communication can only travel in one direction at any given moment. To control which person can speak and be heard, PTT requires the person speaking to press a button while talking and then release it when they are done. The listener then presses their button to respond. This way the system knows which direction the signal should be traveling in. PTT introduces a new real-time direct one-to-one and one-to-many voice communication service in the cellular network. The principle of communication behind the service is simple - just push to talk. Thanks to the "always-on" connection, calls can be started to both individuals and talk groups with just a push of a key. The call connection is almost instantaneous and the receiver doesn't have to answer the call.
QAM: Quadrature Amplitude Modulation; a multi-level modulation technique.
QoS: Quality of Service, performance specification of a communications channel or system or the rating of telephone communications quality in which listeners judge transmissions by qualifiers, such as excellent, good, fair, poor, or unsatisfactory. QoS is a general term that incorporates bandwidth, latency, and jitter to describe a network's ability to customize the treatment of specific classes of data. For example, QoS can be used to prioritize video transmissions over Web-browsing traffic. Advanced networks can offer greater control over how data traffic is classified into classes and greater flexibility as to how the treatment of that traffic is differentiated from other traffic.
QPSK: Spectrally efficient modulation technique that breaks the information path into two parts called the "in phase" and the "quadrature phase" components. The combination of these two signals creates one of four unique symbols that are then used to modulate the phase of the carrier.
Radio Access Network: The part of a wireless network comprised of Base Stations and Base Station Controllers.
Reed-Solomon coding: Reed-Solomon coding is a block-based error correction scheme, which works by adding redundant bits to a data stream. Parity octets are computed and added to the original data stream using a generator polynomial based on finite field arithmetic. Because of the redundant information present, it is possible to recover the original data in up to a certain degree of error.
VoIP: Voice over IP refers to the capability to carry normal telephony-style voice over an IP-based Internet with POTS-like functionality, reliability, and voice quality. In VoIP, the DSP segments the voice signal into frames, which then are coupled in groups of two and stored in voice packets. These voice packets are transported using IP in compliance with ITU-T specification H.323.
Virtual Private Network (VPN): A networking technology used to send data securely over public data networks.
WAP: Wireless Application Protocol - Stack of protocols designed for sending simplified Web pages to wireless devices. It replaces web protocols with its own, and requires that pages be written in WML instead of HTML.
WiMAX: WiMAX, or Worldwide Interoperability for Microwave Access, is the certification name and market-friendly moniker for the IEEE 802.16 standard. IEEE 802.16d, standardized in June 2004, provides non-line-of-sight wireless broadband access to fixed and nomadic users. Its next revision, IEEE 802.16e, provides wireless broadband access to mobile users. IEEE 802.16e is often called Mobile WiMAX and its standardization is expected in the fourth quarter of 2005.
Wi-Fi: Wi-Fi is the certification name and market-friendly moniker for the IEEE 802.11 set of standards. IEEE 802.11 standards are designed to support wireless local area networking in homes and enterprises.
W-CDMA: W-CDMA (Wideband Code Division Multiple Access), a wideband spread-spectrum 3G mobile telecommunication air interface that utilizes code division multiple access (or CDMA the general multiplexing scheme, not to be confused with CDMA the standard), is a 3G mobile communications standard allied with the GSM standard. W-CDMA is the technology behind UMTS (a.k.a. 3GSM).