Appendix 2 Glossary - Tenda 3G186R User Manual

Mobile Wireless Modem

Appendix 2 Glossary

3G: 3G refers to the 3rd Generation digital communication technology.
It provides application services such as multi-media, wide-area wireless
voice telephone, mobile Internet access, video calls, mobile TV,
e-business and etc, all in a mobile environment.
TD-SCDMA: TD-SCDMA (Time Division - Synchronous CDMA), found in
UMTS mobile telecommunications networks in China, adopts TDD, in
contrast to the FDD scheme used by W-CDMA. It can more easily
accommodate asymmetric traffic with different data rate requirements
on downlink and uplink than FDD schemes by dynamically adjusting the
number of timeslots used for downlink and uplink. It also takes an
advantage in spectrum allocation flexibility, as it does not require paired
spectrum for downlink and uplink.
CDMA2000: CDMA2000 (also known as IMT Multi-Carrier (IMT-MC)
w a s p u t f o r w a r d b y Q u a l c o m m , a n A m e r i c a n w i r e l e s s
telecommunications research and development company, as well as the
largest fabless chip supplier in the world. It is a family of 3G mobile
technology standards, transferring voice, data, and signaling data
between mobile phones and cell sites using CDMA channel access.
W-CDMA: W-CDMA (Wideband Code Division Multiple Access), also
known as CDMA Direct Spread, is found in 3G mobile
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