| UICC |
USIM Integrated Circuit Card. The UICC is the
chip card used in mobile terminals in 3G telecom networks-Systems.
The UICC is an essential component for UMTS, just as the SIM
is for GSM. Extending the concept of the SIM card, the UICC
contains the USIM application and also provides a platform for
other IC Card applications. It ensures the integrity and security
of all kinds of personal data, enabling secure support for all
kinds of multi-application schemes. |
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| UIM |
SIM card equivalent planned for W-CDMA handsets. |
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| UMTS |
Universal Mobile Telecommunication System. This
is almost universally subscribed to standard for the third generation
and is generally based on W-CDMA (Wideband Code Division Multiple
Access). UMTS will launch in 2002, but full services for the
general public will not arrive until around 2005. It promises
a permanent internet connection of at least 384kbps and up to
about 2mbps, combined with highly integrated devices and a super-fast
back end. |
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| Uplink |
Technical term for data transmission in the direction
from the subscriber to the network, or rather back to the provider
or Internet provider. Also called back channel . The opposite
transmission direction, the 'transmission channel', is called
the 'uplink' in technical jargon. |
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| UTRA |
UMTS Terrestrial Radio Access. A term use for
UMTS radio access solution, applied to W-CDMA and TD-CDMA . |
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| UTRAN |
UMTS Terrestrial Radio Access Network. A term
describing the Radio Network Controllers and Node Base stations
of a UMTS network. The UMTS network, built around an IP-optimized
core network carrying all traffic types. UTRAN will support
both UTRA Frequency Division Duplex (FDD) and Time Division
Duplex (TDD) radio interfaces allowing flexible, high-bandwidth
support, and will be connected to an IP-optimized core network
through a UTRAN Gateway. |
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| UWC-136 |
Universal Wireless Communications 136. Proposed
by the TIA and adopted by the ITU for 3G, UWC-136 is a 3G TDMA
standard that allows the US TDMA community to migrate from 1st
(IS-136) to 3rd (UWC-136) generation systems. The standard uses
a wideband TDMA technique. |
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