1. 3G Standards ¶

�� ISDN급�� - 144 kbps - �� 게 ��공 �� 게 ��(2.5G�� 경�� )
extra spectrum과 �� modulation techniques�� . CDMA ��(�� 과 �� handoff ��)
��개�� - federal standards
- GSM과 �� CDMA - ��, ��
- CDMA2000 - ��국
Global roaming - �� multimode phone��

1.1. IMT-2000(ITU) ¶

3G : ITU��
2000�� (�� )
- 2000��
- 2000kbps�� data rates
- 2000Mhz ��
�� .

1.1.1. 3G defined ¶

Data rates

144kbps - ��
384kbps - TV ��
2Mbps - ��

�� , Packet Switching Backbone�� 기�� 공��기�� 구��

1.1.2. Service Requirements ¶

3G�� , ��기, �� 고 ��.

�� 6�� service�� broad class ��

Voice(��) : 고�� 기 �� . �� , Conference Calling
Messaging(��) : e-mail과 ��, Extension of paging(��까)->(�� 거��.ㅋㅋ). ��과 ��
Switched Data(��) : �� + dial-up ��근 ��.
Medium Multimedia(��) : �� 3G ��.
High Multimedia(��) : �� , CD�� . �� - 4G��
Interactive(��) High Multimedia

�� .

1.1.3. Spectrum Requirements ¶

3G �� 계�� (�� global roaming�� )�� 고�� .

��공�� 고 �� .

Extra Spectrum �� .

1.1.4. Compatibility ¶

�� 겠�� 게, �� 게 �� CDMA�� 고, TDMA�� . 기�� 과 �� 게 ��.

Direct Upgrades : �� 고 �� 기��, �� 구�� , �� 과 �� . �� 2G�� TDMA��기�� direct upgrades�� 2.5G�� 간��.
Roaming : operation�� multiple modes - 각기 �� 3G System.
Handover : �� 게 2G �� handover��.

�� .

1.2. W-CDMA(Wideband CDMA) ¶

GSM�� handover�� 게 ��고 ��고 ��, GSM�� W-CDMA��
5Mhz��
cdmaOne과�� : ��간 ��기�� . GPS ��. �� . negative feedback�� 기��, ��
Gold codes�� , ��간 �� . QPSK
TDMA�� soft handover�� , GSM�� .(GSM�� soft handover�� )
QPSK�� W-CDMA�� 4Mbps�� . �� 고 �� 간�� . �� , �� 2Mbps, �� 384kbps ��.

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

�� CDMA. �� TDMA(�� 간�� 공�� ) - �� .

1.2.2. UMTS and FOMA ¶

1.2.2.1. UMTS ¶

��
��계�� 간�� 과�� - ��

1.2.2.2. FOMA ¶

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

1.2.3. Upgrading to 3.5G ¶

3G + ��간 - ��계
HSDPA�� - 구�� .

1.3. CDMA-2000 ¶

2G �� cdmaOne�� CDMA��. �� 3G�� CDMA-2000�� .
CDMA2000 3xMC - ��개�� -> ��
��게�� W-CDMA�� . chip rate��.
- CDMA2000 : cdmaOne��
- W-CDMA : GSM�� 구�� 게 ��계
1Xtreme : �� 3xMC�� 게 - ��

1.3.1. 1xMC/1xRTT(��) ¶

�� , �� , Walsh Codes�� .

3G�� 구�� (2.5G)

1.3.2. 1X Enhanced Version ¶

1xMC + ��

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

��

1xEV-DO(Data only) : HDR
1xEV-DV(Data/Voice) : �� . 1XEV-DO��

1.3.3. 3xMC/3xRTT ¶

IMT2000 �� . W-CDMA��

cdmaOne�� - chip rate�� GPS ��

�� .

1xMC��
�� W-CDMA�� 기�� 3.5G 기��

1.4. EDGE ¶

TDMA�� 기�� 3G. GSM�� 고 계��. GSM과 GPRS�� 거��
��고 �� TDMA �� 기 ��.
200kHz�� 기 -> CDMA�� -> D-AMPS ��게 ��.
ITU�� IMT-2000��

1.4.1. Enhanced GPRS ¶

GSM, GPRS�� - �� 계�� - 8PSK��

21.4kbps -> 64.2kbps

기�� GSM. GPRS ��과 ��

1.4.2. Edge Compact ¶

�� (�� ). ��

�� D-AMPS + �� EDGE Compact ��

1.5. Reality Check ¶

�� 그�� .
�� 게 ��.

2. Summary ¶

3개�� 3G �� : W-CDMA, CDMA2000, EDGE. �� IMT-2000�� , 384kbps�� , �� .
- W-CDMA�� GSM과 ��게 ��, �� . 그�� UMTS�� 고, 3.5G �� .
- CDMA2000�� cdmaOne�� 그��, �� 경�� 계�� 구�� .
- EDGE�� GSM과 GPRS�� 그��고, �� .
�� 3G �� 2001�� 갔��. FOMA�� W-CDMA�� . �� 구�� UMTS�� (�� 거?), CDMA2000�� .

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(��) ¶