1. 3G Standards ¶

�� ISDN�� - 144 kbps - �� 할�� (2.5G�� 하�� 했�� 환�� 했��)
extra spectrum�� modulation techniques�� . CDMA ��호(�� 펙트�� 효�� handoff ��)
�� 표�� - federal standards
- GSM�� 호환�� CDMA - ��, ��
- CDMA2000 - ��
Global roaming - ��한 multimode phone��

1.1. IMT-2000(ITU) ¶

3G : ITU��
2000�� (�� 표�� 하��)
- 2000��
- 2000kbps�� data rates
- 2000Mhz �� 파��
�� 표��화�� .

1.1.1. 3G defined ¶

Data rates

144kbps - ��
384kbps - TV 화��
2Mbps - �� 해�� 하��

�� , Packet Switching Backbone�� 한 �� 토�� 하�� 항 ��

1.1.2. Service Requirements ¶

3G�� , ��화��, �� 하�� 키�� 표�� 하�� .

�� 6�� service�� broad class ��

Voice(��킷) : �� 화�� . �� , Conference Calling
Messaging(패킷) : e-mail�� 합��, Extension of paging(��)->(�� 하��.ㅋㅋ). �� 티��팅
Switched Data(��킷) : 팩�� + dial-up �� 포함.
Medium Multimedia(패킷) : �� 3G ��.
High Multimedia(패킷) : 화�� , CD�� . �� 핑 - 4G��
Interactive(��킷) High Multimedia

��킷�� 킷�� 한��.

1.1.3. Spectrum Requirements ¶

3G �� 파��(�� global roaming�� 해)�� 할��하�� 했�� .

�� 투��하�� 펙트�� 함.

Extra Spectrum �� .

1.1.4. Compatibility ¶

하�� 표�� 하�� 한��, �� 크�� CDMA�� , TDMA�� . �� 템�� 호환�� 하��.

Direct Upgrades : �� 하�� 크��, �� 키��, 패킷 �� 한��. �� 2G�� TDMA�� direct upgrades�� 2.5G�� .
Roaming : operation�� multiple modes - �� 3G System.
Handover : ��하�� 2G ��트��크�� handover한��.

�� 할�� .

1.2. W-CDMA(Wideband CDMA) ¶

GSM�� handover�� 하�� 할�� , GSM�� W-CDMA�� 할��
5Mhz�� 폭 ��
cdmaOne�� : �� 화�� . GPS ��. ��크�� . negative feedback�� 한, �� 파�� 트��
Gold codes�� , �� 테크�� . QPSK
TDMA�� 해 soft handover�� 하��, GSM�� 히 힘��.(GSM�� soft handover�� 하�� )
QPSK�� 하�� W-CDMA�� 4Mbps�� . ��할�� 하�� 한�� 하�� 한��. �� , ��크�� 2Mbps, �� 384kbps ��하��.

1.2.1. TD-CDMA(Time Division W-CDMA) ¶

��티플�� CDMA. ��플�� TDMA(��크�� 크�� 해) - ��펙트�� 효�� .

1.2.2. UMTS and FOMA ¶

1.2.2.1. UMTS ¶

�� 표��
�� 표�� 확�� 평�� - ��해��

1.2.2.2. FOMA ¶

�� 표��(1999's UMTS + �� 템 + content based billing)

1.2.3. Upgrading to 3.5G ¶

3G + �� - ��험��
HSDPA�� - �� .

1.3. CDMA-2000 ¶

2G �� cdmaOne�� CDMA��. �� 3G�� 한 �� CDMA-2000�� 한��.
CDMA2000 3xMC - �� -> �� 폭
��행하�� W-CDMA�� 호환. chip rate��.
- CDMA2000 : cdmaOne��
- W-CDMA : GSM��
1Xtreme : 하�� 3xMC�� - ��

1.3.1. 1xMC/1xRTT(��) ¶

�� 하�� 하��, �� 페�� , Walsh Codes�� 해�� 한��.

3G�� 항�� (2.5G)

1.3.2. 1X Enhanced Version ¶

1xMC + 향��

1xMC�� QPSK�� 8-PSK(3bit)�� 16-QAM(4bit)��

�� 표��

1xEV-DO(Data only) : HDR
1xEV-DV(Data/Voice) : ��히 표��화�� . 1XEV-DO�� 테크�� 트��크��

1.3.3. 3xMC/3xRTT ¶

IMT2000 �� 표��. W-CDMA�� 펙트��

cdmaOne�� - chip rate�� GPS ��

�� 하�� .

1xMC�� 해 �� 폭��
�� 호환�� 해 W-CDMA�� 한 3.5G �� 택할��

1.4. EDGE ¶

TDMA�� 하�� 3G. GSM�� 하�� 획. GSM�� GPRS��
��하�� TDMA ��트��크�� 확��하�� 편함.
200kHz�� 크�� -> CDMA�� 한 �� 해 �� -> D-AMPS �� .
ITU�� IMT-2000�� 표�� 함

1.4.1. Enhanced GPRS ¶

GSM, GPRS�� - �� 획 - 8PSK��

21.4kbps -> 64.2kbps

�� GSM. GPRS �� 호환

1.4.2. Edge Compact ¶

�� (�� ). �� 트��

�� 한 D-AMPS + �� 한 EDGE Compact ��

1.5. Reality Check ¶

�� 훨 �� .
�� 해 �� 한��.

2. Summary ¶

3�� 3G ��템 : W-CDMA, CDMA2000, EDGE. �� IMT-2000�� , 384kbps�� , 패킷 �� 한��.
- W-CDMA�� GSM�� 호환�� , �� 펙트�� 하��. �� 한 UMTS�� , 3.5G �� 확�� .
- CDMA2000�� cdmaOne�� , �� 획�� .
- EDGE�� GSM�� GPRS�� , �� 템�� 해 ��히 �� 펙트�� 한��.
�� 3G ��템�� 2001�� . FOMA�� W-CDMA�� 한 �� . �� UMTS�� 하�� (�� ?), CDMA2000�� 하�� 한�� .

DataCommunicationSummaryProject

Data Communication Summary Project/Chapter5

Contents

1. 3G Standards ¶

1.1. IMT-2000(ITU) ¶

1.1.1. 3G defined ¶

1.1.2. Service Requirements ¶

1.1.3. Spectrum Requirements ¶

1.1.4. Compatibility ¶

1.2. W-CDMA(Wideband CDMA) ¶

1.2.1. TD-CDMA(Time Division W-CDMA) ¶

1.2.2. UMTS and FOMA ¶

1.2.2.1. UMTS ¶

1.2.2.2. FOMA ¶

1.2.3. Upgrading to 3.5G ¶

1.3. CDMA-2000 ¶

1.3.1. 1xMC/1xRTT(��) ¶

1.3.2. 1X Enhanced Version ¶

1.3.3. 3xMC/3xRTT ¶

1.4. EDGE ¶

1.4.1. Enhanced GPRS ¶

1.4.2. Edge Compact ¶

1.5. Reality Check ¶

2. Summary ¶

Data Communication Summary Project/Chapter5

Contents

1. 3G Standards ¶

1.1. IMT-2000(ITU) ¶

1.1.1. 3G defined ¶

1.1.2. Service Requirements ¶

1.1.3. Spectrum Requirements ¶

1.1.4. Compatibility ¶

1.2. W-CDMA(Wideband CDMA) ¶

1.2.1. TD-CDMA(Time Division W-CDMA) ¶

1.2.2. UMTS and FOMA ¶

1.2.2.1. UMTS ¶

1.2.2.2. FOMA ¶

1.2.3. Upgrading to 3.5G ¶

1.3. CDMA-2000 ¶

1.3.1. 1xMC/1xRTT(������������) ¶

1.3.2. 1X Enhanced Version ¶

1.3.3. 3xMC/3xRTT ¶

1.4. EDGE ¶

1.4.1. Enhanced GPRS ¶

1.4.2. Edge Compact ¶

1.5. Reality Check ¶

2. Summary ¶

1.3.1. 1xMC/1xRTT(��) ¶