3G150B 150Mbps Portable 3G Wireless Router
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Appendix 3 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)) was put
forward by Qualcomm, an American wireless 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.
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