Virgin Mobile 2200 manual Glossary, GSM technologies, CDMA technologies

Glossary

●●3G — Third Generation. 3G refers to the third generation of mobile telephony technology. The evolution of 3G technology is as follows:

GSM technologies

»» GPRS offered speeds up to 48.8 Kbps (began in 2000).

»» EDGE reached up to 384 Kbps (2003).

»» WCDMA offered downlink speeds up to 1.02 Mbps.

»» UMTS supports a theoretical data transfer rate of 21 Mbps.

»» HSUPA offered uplink speeds up to 5.76 Mbps and downlink speeds up to 7.2 Mbps.

»» HSDPA boosted downlink to 14 Mbps (in 75 countries 2007)

»» HSPA+ increased uplink speeds to 11 Mbps and downlink speeds to 42 Mbps.

»» LTE Evolved UMTS Terrestrial Radio Access is aiming for 100 Mbps (specifications completed 2008).

CDMA technologies

»» 1xRTT offered speeds up to 144 Kbps (2002).

»» EV-DO increased downlink speeds up to 2.4 Mbps (2004).

»» EV-DO Rev A boosted downlink speeds to 3.1 Mbps (2006).

»» EV-DO Rev B can use 2 to 15 channels with each downlink peaking at 4.9 Mbps.

»» Ultra Mobile Broadband was slated to reach 288 Mbps but operators might switch to LTE instead.

●●802.11 (b, g, n) — A set of WLAN communication standards in the 2.4, 3.6 and 5 GHz frequency bands.

●●Access Point — A device that allows wireless communication devices to connect to a wireless network using a standard such as Wi-Fi.

●●APN — Access Point Name. The APN is an alphanumeric string that identifies the particular network service that is being accessed. These are used by GPRS and UMTS networks.

●●bps — bits per second. The rate of data flow.

●●Broadband — High-capacity high-speed, transmission channel with a wider bandwidth than conventional modem lines. Broadband channels can carry video, voice, and data simultaneously.

●●CDMA — Code Division Multiple Access. It is the underlying channel access method used by some mobile phone standards.

●●Computing Device —­Any of a variety of computer-like devices (for example, desktop computer, laptop, tablet PC, smart phone, and PDA).

●●DHCP — Dynamic Host Configuration Protocol. Software found in servers and routers that automatically assigns temporary IP addresses to clients logging into an IP network.

●●DHCP Server — A server or service with a server that assigns IP addresses.

72