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The document discusses the interfaces and standards related to wireless and mobile networks, particularly focusing on the IMT-2000 system and its global roaming capabilities. It highlights the various radio access technologies, including WCDMA and CDMA2000, and the establishment of the 3G Partnership Project (3GPP) for developing unified telecommunication standards. Additionally, it outlines the features of WCDMA, including its Frequency Division Duplex (FDD) mode.

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Nawaz Wariya
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14 views1 page

Output-106 PNG

The document discusses the interfaces and standards related to wireless and mobile networks, particularly focusing on the IMT-2000 system and its global roaming capabilities. It highlights the various radio access technologies, including WCDMA and CDMA2000, and the establishment of the 3G Partnership Project (3GPP) for developing unified telecommunication standards. Additionally, it outlines the features of WCDMA, including its Frequency Division Duplex (FDD) mode.

Uploaded by

Nawaz Wariya
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Wireless Application Protec


Wireless and Mobile Network 31
rface between removable user identity module ang ty
© The UIM-MT interface represents the inte
mobile terminal. | roaming across networks belonging,
e fo r su pp or ti ng globa
© The CN-CN interface is key inte rfac
different family members.
—n
EEX 112000 vision rd to satisfy market deman\
Je service in the twenty4
nda
IMT-2000 is a global sta
ices and its capabilities is as under:
eon for IMT-2000 system serv!
ivisi
The
Common worldwide spectrum.
be [=

cellular).
Gi ES

(LAN, satellite, cordless,


Multiple radio environment
Worldwide roaming capability.
urity and performance.
High quality, enhanced sec
.
small terminal for worldwide use
restrial system.
6. Integration of satellite and ter

LE ACCESS (WCDMA)
EES wiesan.D CODE DIVISION MULTIP
tiple Access and is the 3G technolog
y that emp
Mul
WCDMA stands for Widebai nd Code Division access method
on Multiple Access (DS-WCDMA) channel
vis ior
the Direct-Sequence Code Divis
h-speed and high capaci ty servic
Frequency Division Duplexing (FDD ) method to provide hig
ess capability has been develo, ped in response to a
growing d
Third generation (3G) wirel
data services.
based on either CDM =
There are several different radio access technologies defined within ITU,
TDMA technology. Different regional solutions were proposed as solutions to the requirem
IMT-2000.
These included Time Division Multiple Access (TDMA) and Code Division Multiple Access (COM
utilizing Frequency Division Duplex (FDD) and Time Division Duplex (TDD)
The fragmentation of the proposals led to the creation of two working groups. One group is kn
the Third Generation Partnership Project (3GPP) which is working on the Unified M
Telecommunication Standard (UMTS) based on WCDMA.
¢ The other group is known as 3GPP2 works on CDMA 2000
Organization 3rd Generation Partnership Project (3GPP) has continued that work by di
mobile system that fulfils the IMT-2000 standard, This system a
called Universal
Telecommunication System (UMTS) .
e ITU finally
A approved a family in of fiive 3G standards which
i are part of the 3G framework know2®E

1. WCDMA (UMTs 99)


2, WCDMA (HSPA)
3, CDMA2000
4. TD-CDMA
5, TD-SCDMA
WCDMA Features Two Modes:
1, Frequency Division Duplex (FDD): Separately users by employing both codes as wel!®
frequencies. One frequency is used for the uplink, while other
is used for downlink

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